disable unnecessary/unused regex features to reduce binary size

This will reduce the monolith binary size by ~15%.

.github/workflows/build_gnu_linux.yml

@@ -3,6 +3,17 @@ name: GNU/Linux
 on:
   push:
     branches: [ master ]
+    paths-ignore:
+    - 'assets/'
+    - 'dist/'
+    - 'docs/'
+    - 'snap/'
+    - '.adr-dir'
+    - 'Dockerfile'
+    - 'LICENSE'
+    - 'Makefile'
+    - 'monolith.nuspec'
+    - 'README.md'
 
 jobs:
   build:
@@ -17,6 +28,8 @@ jobs:
 
     steps:
     - run: git config --global core.autocrlf false
+
     - uses: actions/checkout@v2
+
     - name: Build
       run: cargo build --all --locked --verbose

.github/workflows/build_macos.yml

@@ -3,6 +3,17 @@ name: macOS
 on:
   push:
     branches: [ master ]
+    paths-ignore:
+    - 'assets/'
+    - 'dist/'
+    - 'docs/'
+    - 'snap/'
+    - '.adr-dir'
+    - 'Dockerfile'
+    - 'LICENSE'
+    - 'Makefile'
+    - 'monolith.nuspec'
+    - 'README.md'
 
 jobs:
   build:
@@ -17,6 +28,8 @@ jobs:
 
     steps:
     - run: git config --global core.autocrlf false
+
     - uses: actions/checkout@v2
+
     - name: Build
       run: cargo build --all --locked --verbose

.github/workflows/build_windows.yml

@@ -3,6 +3,17 @@ name: Windows
 on:
   push:
     branches: [ master ]
+    paths-ignore:
+    - 'assets/'
+    - 'dist/'
+    - 'docs/'
+    - 'snap/'
+    - '.adr-dir'
+    - 'Dockerfile'
+    - 'LICENSE'
+    - 'Makefile'
+    - 'monolith.nuspec'
+    - 'README.md'
 
 jobs:
   build:
@@ -17,6 +28,8 @@ jobs:
 
     steps:
     - run: git config --global core.autocrlf false
+
     - uses: actions/checkout@v2
+
     - name: Build
       run: cargo build --all --locked --verbose

.github/workflows/cd.yml

@@ -1,4 +1,4 @@
-# CD GitHub Actions workflow for Monolith
+# CD GitHub Actions workflow for monolith
 
 name: CD
 
@@ -13,10 +13,13 @@ jobs:
     runs-on: windows-2019
     steps:
     - run: git config --global core.autocrlf false
+
     - name: Checkout the repository
       uses: actions/checkout@v2
+
     - name: Build the executable
       run: cargo build --release
+
     - uses: Shopify/upload-to-release@1.0.0
       with:
         name: monolith.exe
@@ -28,24 +31,27 @@ jobs:
     steps:
     - name: Checkout the repository
       uses: actions/checkout@v2
+
     - name: Prepare cross-platform environment
       run: |
-        sudo mkdir -p /cross-build-arm
+        sudo mkdir /cross-build
         sudo touch /etc/apt/sources.list.d/armhf.list
         echo "deb [arch=armhf] http://ports.ubuntu.com/ubuntu-ports/ bionic main" | sudo tee -a /etc/apt/sources.list.d/armhf.list
         sudo apt-get update
         sudo apt-get install -y gcc-arm-linux-gnueabihf libc6-armhf-cross libc6-dev-armhf-cross
         sudo apt-get download libssl1.1:armhf libssl-dev:armhf
-        sudo dpkg -x libssl1.1*.deb /cross-build-arm
-        sudo dpkg -x libssl-dev*.deb /cross-build-arm
+        sudo dpkg -x libssl1.1*.deb /cross-build
+        sudo dpkg -x libssl-dev*.deb /cross-build
         rustup target add arm-unknown-linux-gnueabihf
-        echo "::set-env name=C_INCLUDE_PATH::/cross-build-arm/usr/include"
-        echo "::set-env name=OPENSSL_INCLUDE_DIR::/cross-build-arm/usr/include/arm-linux-gnueabihf"
-        echo "::set-env name=OPENSSL_LIB_DIR::/cross-build-arm/usr/lib/arm-linux-gnueabihf"
-        echo "::set-env name=PKG_CONFIG_ALLOW_CROSS::1"
-        echo "::set-env name=RUSTFLAGS::-C linker=arm-linux-gnueabihf-gcc -L/usr/arm-linux-gnueabihf/lib -L/cross-build-arm/usr/lib/arm-linux-gnueabihf -L/cross-build-arm/lib/arm-linux-gnueabihf"
+        echo "C_INCLUDE_PATH=/cross-build/usr/include" >> $GITHUB_ENV
+        echo "OPENSSL_INCLUDE_DIR=/cross-build/usr/include/arm-linux-gnueabihf" >> $GITHUB_ENV
+        echo "OPENSSL_LIB_DIR=/cross-build/usr/lib/arm-linux-gnueabihf" >> $GITHUB_ENV
+        echo "PKG_CONFIG_ALLOW_CROSS=1" >> $GITHUB_ENV
+        echo "RUSTFLAGS=-C linker=arm-linux-gnueabihf-gcc -L/usr/arm-linux-gnueabihf/lib -L/cross-build/usr/lib/arm-linux-gnueabihf -L/cross-build/lib/arm-linux-gnueabihf" >> $GITHUB_ENV
+
     - name: Build the executable
       run: cargo build --release --target=arm-unknown-linux-gnueabihf
+
     - name: Attach artifact to the release
       uses: Shopify/upload-to-release@1.0.0
       with:
@@ -53,13 +59,48 @@ jobs:
         path: target/arm-unknown-linux-gnueabihf/release/monolith
         repo-token: ${{ secrets.GITHUB_TOKEN }}
 
+  gnu_linux_aarch64:
+    runs-on: ubuntu-18.04
+    steps:
+    - name: Checkout the repository
+      uses: actions/checkout@v2
+
+    - name: Prepare cross-platform environment
+      run: |
+        sudo mkdir /cross-build
+        sudo touch /etc/apt/sources.list.d/arm64.list
+        echo "deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports/ bionic main" | sudo tee -a /etc/apt/sources.list.d/arm64.list
+        sudo apt-get update
+        sudo apt-get install -y gcc-aarch64-linux-gnu libc6-arm64-cross libc6-dev-arm64-cross
+        sudo apt-get download libssl1.1:arm64 libssl-dev:arm64
+        sudo dpkg -x libssl1.1*.deb /cross-build
+        sudo dpkg -x libssl-dev*.deb /cross-build
+        rustup target add aarch64-unknown-linux-gnu
+        echo "C_INCLUDE_PATH=/cross-build/usr/include" >> $GITHUB_ENV
+        echo "OPENSSL_INCLUDE_DIR=/cross-build/usr/include/aarch64-linux-gnu" >> $GITHUB_ENV
+        echo "OPENSSL_LIB_DIR=/cross-build/usr/lib/aarch64-linux-gnu" >> $GITHUB_ENV
+        echo "PKG_CONFIG_ALLOW_CROSS=1" >> $GITHUB_ENV
+        echo "RUSTFLAGS=-C linker=aarch64-linux-gnu-gcc -L/usr/aarch64-linux-gnu/lib -L/cross-build/usr/lib/aarch64-linux-gnu" >> $GITHUB_ENV
+
+    - name: Build the executable
+      run: cargo build --release --target=aarch64-unknown-linux-gnu
+
+    - name: Attach artifact to the release
+      uses: Shopify/upload-to-release@1.0.0
+      with:
+        name: monolith-gnu-linux-aarch64
+        path: target/aarch64-unknown-linux-gnu/release/monolith
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+
   gnu_linux_x86_64:
     runs-on: ubuntu-18.04
     steps:
     - name: Checkout the repository
       uses: actions/checkout@v2
+
     - name: Build the executable
       run: cargo build --release
+
     - uses: Shopify/upload-to-release@1.0.0
       with:
         name: monolith-gnu-linux-x86_64

.github/workflows/ci.yml

@@ -1,8 +1,21 @@
+# CI GitHub Actions workflow for monolith
+
 name: CI
 
 on:
   pull_request:
     branches: [ master ]
+    paths-ignore:
+    - 'assets/'
+    - 'dist/'
+    - 'docs/'
+    - 'snap/'
+    - '.adr-dir'
+    - 'Dockerfile'
+    - 'LICENSE'
+    - 'Makefile'
+    - 'monolith.nuspec'
+    - 'README.md'
 
 jobs:
   build_and_test:
@@ -21,11 +34,15 @@ jobs:
 
     steps:
     - run: git config --global core.autocrlf false
+
     - uses: actions/checkout@v2
+
     - name: Build
       run: cargo build --all --locked --verbose
+
     - name: Run tests
       run: cargo test --all --locked --verbose
+
     - name: Check code formatting
       run: |
         rustup component add rustfmt

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "monolith"
-version = "2.4.0"
+version = "2.6.2"
 authors = [
     "Sunshine <sunshine@uberspace.net>",
     "Mahdi Robatipoor <mahdi.robatipoor@gmail.com>",
@@ -19,24 +19,30 @@ include = [
     "src/*.rs",
     "Cargo.toml",
 ]
-license = "Unlicense"
-license-file = "LICENSE"
+license = "CC0-1.0"
 
 [dependencies]
-base64 = "0.13.0"
-chrono = "0.4.19" # Used for formatting creation timestamp
-clap = "2.33.3"
-cssparser = "0.27.2"
+atty = "0.2.14" # Used for highlighting network errors
+base64 = "0.13.0" # Used for integrity attributes
+chrono = "0.4.20" # Used for formatting creation timestamp
+clap = "3.2.16"
+cssparser = "0.29.6"
+encoding_rs = "0.8.31"
 html5ever = "0.24.1"
-regex = "1.4.2" # Used for parsing srcset
-sha2 = "0.9.2" # Used for calculating checksums during integrity checks
-url = "2.2.0"
+percent-encoding = "2.1.0"
+sha2 = "0.10.2" # Used for calculating checksums during integrity checks
+url = "2.2.2"
+
+# Used for parsing srcset and NOSCRIPT
+[dependencies.regex]
+version = "1.6.0"
+default-features = false
+features = ["std", "perf-dfa", "unicode-perl"]
 
 [dependencies.reqwest]
-version = "0.10.9"
+version = "0.11.11"
 default-features = false
-features = ["default-tls", "blocking", "gzip"]
+features = ["default-tls", "blocking", "gzip", "brotli", "deflate"]
 
 [dev-dependencies]
-assert_cmd = "1.0.1"
-tempfile = "3.1.0"
+assert_cmd = "2.0.4"

Dockerfile

@@ -1,18 +1,22 @@
-FROM rust
-
-WORKDIR /usr/local/src/
-RUN curl -s https://api.github.com/repos/y2z/monolith/releases/latest \
-| grep "tarball_url.*\"," \
-| cut -d '"' -f 4 \
-| wget -qi - -O monolith.tar.gz
+FROM ekidd/rust-musl-builder as builder
 
+RUN curl -L -o monolith.tar.gz $(curl -s https://api.github.com/repos/y2z/monolith/releases/latest \
+                                 | grep "tarball_url.*\"," \
+                                 | cut -d '"' -f 4)
 RUN tar xfz monolith.tar.gz \
-&& mv Y2Z-monolith-* monolith \
-&& rm monolith.tar.gz
+    && mv Y2Z-monolith-* monolith \
+    && rm monolith.tar.gz
 
-WORKDIR /usr/local/src/monolith
-RUN ls -a
+WORKDIR monolith/
 RUN make install
 
+
+FROM alpine
+
+RUN apk update && \
+  apk add --no-cache openssl && \
+  rm -rf "/var/cache/apk/*"
+
+COPY --from=builder /home/rust/.cargo/bin/monolith /usr/bin/monolith
 WORKDIR /tmp
-CMD ["/usr/local/cargo/bin/monolith"]
+ENTRYPOINT ["/usr/bin/monolith"]

LICENSE

@@ -1,24 +1,121 @@
-This is free and unencumbered software released into the public domain.
+Creative Commons Legal Code
 
-Anyone is free to copy, modify, publish, use, compile, sell, or
-distribute this software, either in source code form or as a compiled
-binary, for any purpose, commercial or non-commercial, and by any
-means.
+CC0 1.0 Universal
 
-In jurisdictions that recognize copyright laws, the author or authors
-of this software dedicate any and all copyright interest in the
-software to the public domain. We make this dedication for the benefit
-of the public at large and to the detriment of our heirs and
-successors. We intend this dedication to be an overt act of
-relinquishment in perpetuity of all present and future rights to this
-software under copyright law.
+    CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
+    LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
+    ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
+    INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
+    REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
+    PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
+    THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
+    HEREUNDER.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
+Statement of Purpose
 
-For more information, please refer to <http://unlicense.org>
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator
+and subsequent owner(s) (each and all, an "owner") of an original work of
+authorship and/or a database (each, a "Work").
+
+Certain owners wish to permanently relinquish those rights to a Work for
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+These owners may contribute to the Commons to promote the ideal of a free
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+For these and/or other purposes and motivations, and without any
+expectation of additional consideration or compensation, the person
+associating CC0 with a Work (the "Affirmer"), to the extent that he or she
+is an owner of Copyright and Related Rights in the Work, voluntarily
+elects to apply CC0 to the Work and publicly distribute the Work under its
+terms, with knowledge of his or her Copyright and Related Rights in the
+Work and the meaning and intended legal effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be
+protected by copyright and related or neighboring rights ("Copyright and
+Related Rights"). Copyright and Related Rights include, but are not
+limited to, the following:
+
+  i. the right to reproduce, adapt, distribute, perform, display,
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+ ii. moral rights retained by the original author(s) and/or performer(s);
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+     European Parliament and of the Council of 11 March 1996 on the legal
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+     directive); and
+vii. other similar, equivalent or corresponding rights throughout the
+     world based on applicable law or treaty, and any national
+     implementations thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention
+of, applicable law, Affirmer hereby overtly, fully, permanently,
+irrevocably and unconditionally waives, abandons, and surrenders all of
+Affirmer's Copyright and Related Rights and associated claims and causes
+of action, whether now known or unknown (including existing as well as
+future claims and causes of action), in the Work (i) in all territories
+worldwide, (ii) for the maximum duration provided by applicable law or
+treaty (including future time extensions), (iii) in any current or future
+medium and for any number of copies, and (iv) for any purpose whatsoever,
+including without limitation commercial, advertising or promotional
+purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
+member of the public at large and to the detriment of Affirmer's heirs and
+successors, fully intending that such Waiver shall not be subject to
+revocation, rescission, cancellation, termination, or any other legal or
+equitable action to disrupt the quiet enjoyment of the Work by the public
+as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason
+be judged legally invalid or ineffective under applicable law, then the
+Waiver shall be preserved to the maximum extent permitted taking into
+account Affirmer's express Statement of Purpose. In addition, to the
+extent the Waiver is so judged Affirmer hereby grants to each affected
+person a royalty-free, non transferable, non sublicensable, non exclusive,
+irrevocable and unconditional license to exercise Affirmer's Copyright and
+Related Rights in the Work (i) in all territories worldwide, (ii) for the
+maximum duration provided by applicable law or treaty (including future
+time extensions), (iii) in any current or future medium and for any number
+of copies, and (iv) for any purpose whatsoever, including without
+limitation commercial, advertising or promotional purposes (the
+"License"). The License shall be deemed effective as of the date CC0 was
+applied by Affirmer to the Work. Should any part of the License for any
+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder
+of the License, and in such case Affirmer hereby affirms that he or she
+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
+action with respect to the Work, in either case contrary to Affirmer's
+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
+    surrendered, licensed or otherwise affected by this document.
+ b. Affirmer offers the Work as-is and makes no representations or
+    warranties of any kind concerning the Work, express, implied,
+    statutory or otherwise, including without limitation warranties of
+    title, merchantability, fitness for a particular purpose, non
+    infringement, or the absence of latent or other defects, accuracy, or
+    the present or absence of errors, whether or not discoverable, all to
+    the greatest extent permissible under applicable law.
+ c. Affirmer disclaims responsibility for clearing rights of other persons
+    that may apply to the Work or any use thereof, including without
+    limitation any person's Copyright and Related Rights in the Work.
+    Further, Affirmer disclaims responsibility for obtaining any necessary
+    consents, permissions or other rights required for any use of the
+    Work.
+ d. Affirmer understands and acknowledges that Creative Commons is not a
+    party to this document and has no duty or obligation with respect to
+    this CC0 or use of the Work.

Makefile

@@ -10,7 +10,7 @@ build:
 test: build
 	@cargo test --locked
 	@cargo fmt --all -- --check
-.PHONY: test_code_formatting
+.PHONY: test
 
 lint:
 	@cargo fmt --all --

README.md

@@ -1,6 +1,6 @@
-[![Monolith Build Status for GNU/Linux](https://github.com/Y2Z/monolith/workflows/GNU%2FLinux/badge.svg)](https://github.com/Y2Z/monolith/actions?query=workflow%3AGNU%2FLinux)
-[![Monolith Build Status for macOS](https://github.com/Y2Z/monolith/workflows/macOS/badge.svg)](https://github.com/Y2Z/monolith/actions?query=workflow%3AmacOS)
-[![Monolith Build Status for Windows](https://github.com/Y2Z/monolith/workflows/Windows/badge.svg)](https://github.com/Y2Z/monolith/actions?query=workflow%3AWindows)
+[![monolith build status on GNU/Linux](https://github.com/Y2Z/monolith/workflows/GNU%2FLinux/badge.svg)](https://github.com/Y2Z/monolith/actions?query=workflow%3AGNU%2FLinux)
+[![monolith build status on macOS](https://github.com/Y2Z/monolith/workflows/macOS/badge.svg)](https://github.com/Y2Z/monolith/actions?query=workflow%3AmacOS)
+[![monolith build status on Windows](https://github.com/Y2Z/monolith/workflows/Windows/badge.svg)](https://github.com/Y2Z/monolith/actions?query=workflow%3AWindows)
 
 ```
  _____     ______________    __________      ___________________    ___
@@ -18,49 +18,104 @@ Unlike the conventional “Save page as”, `monolith` not only saves the target
 
 If compared to saving websites with `wget -mpk`, this tool embeds all assets as data URLs and therefore lets browsers render the saved page exactly the way it was on the Internet, even when no network connection is available.
 
+
 ---------------------------------------------------
 
+
 ## Installation
 
-### Using Cargo
-    $ cargo install monolith
+#### Using [Cargo](https://crates.io/crates/monolith)
 
-#### Via Homebrew (on macOS and GNU/Linux)
-    $ brew install monolith
+```console
+cargo install monolith
+```
 
-#### Using Snapcraft (on GNU/Linux)
-    $ snap install monolith
+#### Via [Homebrew](https://formulae.brew.sh/formula/monolith) (macOS and GNU/Linux)
 
-#### Using Ports collection (on FreeBSD and TrueOS)
-    $ cd /usr/ports/www/monolith/
-    $ make install clean
+```console
+brew install monolith
+```
 
-#### Using pre-built binaries (Windows, ARM-based devices, etc)
-Every [release](https://github.com/Y2Z/monolith/releases) contains pre-built binaries for Windows, GNU/Linux, as well as platforms with non-standart CPU architecture.
+#### Via [MacPorts](https://ports.macports.org/port/monolith/summary) (macOS)
 
-#### From source
+```console
+sudo port install monolith
+```
 
-Dependency: `libssl-dev`
+#### Using [Snapcraft](https://snapcraft.io/monolith) (GNU/Linux)
 
-    $ git clone https://github.com/Y2Z/monolith.git
-    $ cd monolith
-    $ make install
+```console
+snap install monolith
+```
+
+#### Using [FreeBSD packages](https://svnweb.freebsd.org/ports/head/www/monolith/) (FreeBSD)
+
+```console
+pkg install monolith
+```
+
+#### Using [FreeBSD ports](https://www.freshports.org/www/monolith/) (FreeBSD)
+
+```console
+cd /usr/ports/www/monolith/
+make install clean
+```
+
+#### Using [pkgsrc](https://pkgsrc.se/www/monolith) (NetBSD, OpenBSD, Haiku, etc)
+
+```console
+cd /usr/pkgsrc/www/monolith
+make install clean
+```
+
+#### Using [containers](https://www.docker.com/)
+
+```console
+docker build -t Y2Z/monolith .
+sudo install -b dist/run-in-container.sh /usr/local/bin/monolith
+```
+
+#### From [source](https://github.com/Y2Z/monolith)
+
+Dependency: `libssl`
+
+```console
+git clone https://github.com/Y2Z/monolith.git
+cd monolith
+make install
+```
+
+#### Using [pre-built binaries](https://github.com/Y2Z/monolith/releases) (Windows, ARM-based devices, etc)
+
+Every release contains pre-built binaries for Windows, GNU/Linux, as well as platforms with non-standard CPU architecture.
 
-#### Using Containers
-The guide can be found [here](docs/containers.md)
 
 ---------------------------------------------------
 
+
 ## Usage
-    $ monolith https://lyrics.github.io/db/P/Portishead/Dummy/Roads/ -o portishead-roads-lyrics.html
+
+```console
+monolith https://lyrics.github.io/db/P/Portishead/Dummy/Roads/ -o portishead-roads-lyrics.html
+```
+
+```console
+cat index.html | monolith -aIiFfcMv -b https://original.site/ - > result.html
+```
+
 
 ---------------------------------------------------
 
+
 ## Options
+
  - `-a`: Exclude audio sources
- - `-b`: Use custom base URL
+ - `-b`: Use custom `base URL`
  - `-c`: Exclude CSS
+ - `-C`: Save document using custom `charset`
+ - `-d`: Allow retrieving assets only from specified `domain(s)`
  - `-e`: Ignore network errors
+ - `-E`: Avoid retrieving assets located within specified domains
  - `-f`: Omit frames
  - `-F`: Exclude web fonts
  - `-i`: Remove images
@@ -68,36 +123,53 @@ The guide can be found [here](docs/containers.md)
  - `-j`: Exclude JavaScript
  - `-k`: Accept invalid X.509 (TLS) certificates
  - `-M`: Don't add timestamp and URL information
- - `-o`: Write output to file
+ - `-n`: Extract contents of NOSCRIPT elements
+ - `-o`: Write output to `file` (use “-” for STDOUT)
  - `-s`: Be quiet
- - `-t`: Adjust network request timeout
- - `-u`: Provide custom User-Agent
+ - `-t`: Adjust `network request timeout`
+ - `-u`: Provide custom `User-Agent`
  - `-v`: Exclude videos
 
+
 ---------------------------------------------------
 
+
 ## Proxies
+
 Please set `https_proxy`, `http_proxy`, and `no_proxy` environment variables.
 
+
 ---------------------------------------------------
 
+
 ## Contributing
+
 Please open an issue if something is wrong, that helps make this project better.
 
+
 ---------------------------------------------------
 
+
 ## Related projects
- - `Monolith Chrome Extension`: https://github.com/rhysd/monolith-of-web
- - `Pagesaver`: https://github.com/distributed-mind/pagesaver
- - `Personal WayBack Machine`: https://github.com/popey/pwbm
- - `Hako`: https://github.com/dmpop/hako
+
+ - Monolith Chrome Extension: https://github.com/rhysd/monolith-of-web
+ - Pagesaver: https://github.com/distributed-mind/pagesaver
+ - Personal WayBack Machine: https://github.com/popey/pwbm
+ - Hako: https://github.com/dmpop/hako
+ - Monk: https://github.com/monk-dev/monk
+
 
 ---------------------------------------------------
 
+
 ## License
-The Unlicense
+
+To the extent possible under law, the author(s) have dedicated all copyright related and neighboring rights to this software to the public domain worldwide.
+This software is distributed without any warranty.
+
 
 ---------------------------------------------------
 
+
 <!-- Microtext -->
 <sub>Keep in mind that `monolith` is not aware of your browser’s session</sub>

dist/run-in-container.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+DOCKER=docker
+PROG_NAME=monolith
+
+if which podman 2>&1 > /dev/null; then
+    DOCKER=podman
+fi
+
+$DOCKER run --rm Y2Z/$PROG_NAME "$@"

docs/containers.md

@@ -1,15 +0,0 @@
-1. Run `docker build -t y2z/monolith .` to create a Docker image
-
-2. Create a file named `monolith` which contains:
-```sh
-#!/bin/sh
-
-docker run --rm \
-    y2z/monolith \
-    monolith \
-    "$@"
-```
-3. Make the file executable (`chmod +x monolith`) and include it into your `$PATH`
-4. Now you should be able to run a containerized build of monolith like this:  
-`monolith -I https://github.com > document.html`
-

docs/web-apps.md

@@ -1,10 +1,23 @@
 # Web apps that can be saved with Monolith
 
-These apps retain most or all of their functionality when saved with Monolith
+These apps retain all or most of their functionality when saved with Monolith:
 
-|Converse|https://conversejs.org|
-|:--|:--|
-|Description|An XMPP client built using web technologies|
-|Functionality retained|**full**|
-|Command to use|`monolith https://conversejs.org/fullscreen.html > conversejs.html`|
-|Monolith version used|2.2.7|
+
+## Converse
+
+| Website                | https://conversejs.org                                              |
+|:-----------------------|:--------------------------------------------------------------------|
+| Description            | An XMPP client built using web technologies                         |
+| Functionality retained | **full**                                                            |
+| Command to use         | `monolith https://conversejs.org/fullscreen.html > conversejs.html` |
+| Monolith version used  | 2.2.7                                                               |
+
+
+## Markdown Tables generator
+
+| Website                   | https://www.tablesgenerator.com                                                                |
+|:--------------------------|:-----------------------------------------------------------------------------------------------|
+| Description               | Tool for creating tables in extended Markdown format                                           |
+| Functionality retained    | **full**                                                                                       |
+| Command to use            | `monolith -I https://www.tablesgenerator.com/markdown_tables -o markdown-table-generator.html` |
+| Monolith version used     | 2.6.1                                                                                          |

monolith.nuspec

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2015/06/nuspec.xsd">
+  <metadata>
+    <id>monolith</id>
+    <version>2.4.0</version>
+    <title>Monolith</title>
+    <authors>Sunshine, Mahdi Robatipoor, Emmanuel Delaborde, Emi Simpson, rhysd</authors>
+    <projectUrl>https://github.com/Y2Z/monolith</projectUrl>
+    <iconUrl>https://raw.githubusercontent.com/Y2Z/monolith/master/assets/icon/icon.png</iconUrl>
+    <licenseUrl>https://raw.githubusercontent.com/Y2Z/monolith/master/LICENSE</licenseUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <description>CLI tool for saving complete web pages as a single HTML file
+
+A data hoarder’s dream come true: bundle any web page into a single HTML file. You can finally replace that gazillion of open tabs with a gazillion of .html files stored somewhere on your precious little drive.
+
+Unlike the conventional “Save page as”, monolith not only saves the target document, it embeds CSS, image, and JavaScript assets all at once, producing a single HTML5 document that is a joy to store and share.
+
+If compared to saving websites using wget, this tool embeds all assets as data URLs and therefore lets browsers render the saved page exactly the way it was on the Internet, even when no network connection is available.
+    </description>
+    <copyright>Public Domain</copyright>
+    <language>en-US</language>
+    <tags>scraping archiving</tags>
+    <docsUrl>https://github.com/Y2Z/monolith/blob/master/README.md</docsUrl>
+  </metadata>
+</package>

src/css.rs

@@ -1,9 +1,12 @@
-use cssparser::{ParseError, Parser, ParserInput, SourcePosition, Token};
+use cssparser::{
+    serialize_identifier, serialize_string, ParseError, Parser, ParserInput, SourcePosition, Token,
+};
 use reqwest::blocking::Client;
 use std::collections::HashMap;
+use url::Url;
 
 use crate::opts::Options;
-use crate::url::{data_to_data_url, get_url_fragment, is_http_url, resolve_url, url_with_fragment};
+use crate::url::{create_data_url, resolve_url, EMPTY_IMAGE_DATA_URL};
 use crate::utils::retrieve_asset;
 
 const CSS_PROPS_WITH_IMAGE_URLS: &[&str] = &[
@@ -26,7 +29,44 @@ const CSS_PROPS_WITH_IMAGE_URLS: &[&str] = &[
     "suffix",
     "symbols",
 ];
-const CSS_SPECIAL_CHARS: &str = "~!@$%^&*()+=,./'\";:?><[]{}|`#";
+
+pub fn embed_css(
+    cache: &mut HashMap<String, Vec<u8>>,
+    client: &Client,
+    document_url: &Url,
+    css: &str,
+    options: &Options,
+    depth: u32,
+) -> String {
+    let mut input = ParserInput::new(&css);
+    let mut parser = Parser::new(&mut input);
+
+    process_css(
+        cache,
+        client,
+        document_url,
+        &mut parser,
+        options,
+        depth,
+        "",
+        "",
+        "",
+    )
+    .unwrap()
+}
+
+pub fn format_ident(ident: &str) -> String {
+    let mut res: String = "".to_string();
+    let _ = serialize_identifier(ident, &mut res);
+    res = res.trim_end().to_string();
+    res
+}
+
+pub fn format_quoted_string(string: &str) -> String {
+    let mut res: String = "".to_string();
+    let _ = serialize_string(string, &mut res);
+    res
+}
 
 pub fn is_image_url_prop(prop_name: &str) -> bool {
     CSS_PROPS_WITH_IMAGE_URLS
@@ -35,30 +75,10 @@ pub fn is_image_url_prop(prop_name: &str) -> bool {
         .is_some()
 }
 
-pub fn enquote(input: String, double: bool) -> String {
-    if double {
-        format!("\"{}\"", input.replace("\"", "\\\""))
-    } else {
-        format!("'{}'", input.replace("'", "\\'"))
-    }
-}
-
-pub fn escape(value: &str) -> String {
-    let mut res = str!(&value);
-
-    res = res.replace("\\", "\\\\");
-
-    for c in CSS_SPECIAL_CHARS.chars() {
-        res = res.replace(c, format!("\\{}", c).as_str());
-    }
-
-    res
-}
-
 pub fn process_css<'a>(
     cache: &mut HashMap<String, Vec<u8>>,
     client: &Client,
-    parent_url: &str,
+    document_url: &Url,
     parser: &mut Parser,
     options: &Options,
     depth: u32,
@@ -66,10 +86,10 @@ pub fn process_css<'a>(
     prop_name: &str,
     func_name: &str,
 ) -> Result<String, ParseError<'a, String>> {
-    let mut result: String = str!();
+    let mut result: String = "".to_string();
 
-    let mut curr_rule: String = str!(rule_name.clone());
-    let mut curr_prop: String = str!(prop_name.clone());
+    let mut curr_rule: String = rule_name.clone().to_string();
+    let mut curr_prop: String = prop_name.clone().to_string();
     let mut token: &Token;
     let mut token_offset: SourcePosition;
 
@@ -85,7 +105,7 @@ pub fn process_css<'a>(
         match *token {
             Token::Comment(_) => {
                 let token_slice = parser.slice_from(token_offset);
-                result.push_str(str!(token_slice).as_str());
+                result.push_str(token_slice);
             }
             Token::Semicolon => result.push_str(";"),
             Token::Colon => result.push_str(":"),
@@ -112,7 +132,7 @@ pub fn process_css<'a>(
                         process_css(
                             cache,
                             client,
-                            parent_url,
+                            document_url,
                             parser,
                             options,
                             depth,
@@ -141,13 +161,13 @@ pub fn process_css<'a>(
             }
             // div...
             Token::Ident(ref value) => {
-                curr_rule = str!();
-                curr_prop = str!(value);
-                result.push_str(&escape(value));
+                curr_rule = "".to_string();
+                curr_prop = value.to_string();
+                result.push_str(&format_ident(value));
             }
             // @import, @font-face, @charset, @media...
             Token::AtKeyword(ref value) => {
-                curr_rule = str!(value);
+                curr_rule = value.to_string();
                 if options.no_fonts && curr_rule == "font-face" {
                     continue;
                 }
@@ -161,27 +181,32 @@ pub fn process_css<'a>(
             Token::QuotedString(ref value) => {
                 if curr_rule == "import" {
                     // Reset current at-rule value
-                    curr_rule = str!();
+                    curr_rule = "".to_string();
 
                     // Skip empty import values
-                    if value.len() < 1 {
+                    if value.len() == 0 {
                         result.push_str("''");
                         continue;
                     }
 
-                    let import_full_url = resolve_url(&parent_url, value).unwrap_or_default();
-                    let import_url_fragment = get_url_fragment(import_full_url.clone());
+                    let import_full_url: Url = resolve_url(&document_url, value);
                     match retrieve_asset(
                         cache,
                         client,
-                        &parent_url,
+                        &document_url,
                         &import_full_url,
                         options,
                         depth + 1,
                     ) {
-                        Ok((import_contents, import_final_url, _import_media_type)) => {
-                            let import_data_url = data_to_data_url(
-                                "text/css",
+                        Ok((
+                            import_contents,
+                            import_final_url,
+                            import_media_type,
+                            import_charset,
+                        )) => {
+                            let mut import_data_url = create_data_url(
+                                &import_media_type,
+                                &import_charset,
                                 embed_css(
                                     cache,
                                     client,
@@ -193,63 +218,64 @@ pub fn process_css<'a>(
                                 .as_bytes(),
                                 &import_final_url,
                             );
-                            let assembled_url: String = url_with_fragment(
-                                import_data_url.as_str(),
-                                import_url_fragment.as_str(),
+                            import_data_url.set_fragment(import_full_url.fragment());
+                            result.push_str(
+                                format_quoted_string(&import_data_url.to_string()).as_str(),
                             );
-                            result.push_str(enquote(assembled_url, false).as_str());
                         }
                         Err(_) => {
                             // Keep remote reference if unable to retrieve the asset
-                            if is_http_url(import_full_url.clone()) {
-                                let assembled_url: String = url_with_fragment(
-                                    import_full_url.as_str(),
-                                    import_url_fragment.as_str(),
+                            if import_full_url.scheme() == "http"
+                                || import_full_url.scheme() == "https"
+                            {
+                                result.push_str(
+                                    format_quoted_string(&import_full_url.to_string()).as_str(),
                                 );
-                                result.push_str(enquote(assembled_url, false).as_str());
                             }
                         }
                     }
                 } else {
                     if func_name == "url" {
                         // Skip empty url()'s
-                        if value.len() < 1 {
+                        if value.len() == 0 {
                             continue;
                         }
 
                         if options.no_images && is_image_url_prop(curr_prop.as_str()) {
-                            result.push_str(enquote(str!(empty_image!()), false).as_str());
+                            result.push_str(format_quoted_string(EMPTY_IMAGE_DATA_URL).as_str());
                         } else {
-                            let resolved_url = resolve_url(&parent_url, value).unwrap_or_default();
-                            let url_fragment = get_url_fragment(resolved_url.clone());
+                            let resolved_url: Url = resolve_url(&document_url, value);
                             match retrieve_asset(
                                 cache,
                                 client,
-                                &parent_url,
+                                &document_url,
                                 &resolved_url,
                                 options,
                                 depth + 1,
                             ) {
-                                Ok((data, final_url, media_type)) => {
-                                    let data_url = data_to_data_url(&media_type, &data, &final_url);
-                                    let assembled_url: String =
-                                        url_with_fragment(data_url.as_str(), url_fragment.as_str());
-                                    result.push_str(enquote(assembled_url, false).as_str());
+                                Ok((data, final_url, media_type, charset)) => {
+                                    let mut data_url =
+                                        create_data_url(&media_type, &charset, &data, &final_url);
+                                    data_url.set_fragment(resolved_url.fragment());
+                                    result.push_str(
+                                        format_quoted_string(&data_url.to_string()).as_str(),
+                                    );
                                 }
                                 Err(_) => {
                                     // Keep remote reference if unable to retrieve the asset
-                                    if is_http_url(resolved_url.clone()) {
-                                        let assembled_url: String = url_with_fragment(
-                                            resolved_url.as_str(),
-                                            url_fragment.as_str(),
+                                    if resolved_url.scheme() == "http"
+                                        || resolved_url.scheme() == "https"
+                                    {
+                                        result.push_str(
+                                            format_quoted_string(&resolved_url.to_string())
+                                                .as_str(),
                                         );
-                                        result.push_str(enquote(assembled_url, false).as_str());
                                     }
                                 }
                             }
                         }
                     } else {
-                        result.push_str(enquote(str!(value), false).as_str());
+                        result.push_str(format_quoted_string(value).as_str());
                     }
                 }
             }
@@ -271,7 +297,7 @@ pub fn process_css<'a>(
                 if *has_sign && *unit_value >= 0. {
                     result.push_str("+");
                 }
-                result.push_str(str!(unit_value * 100.0).as_str());
+                result.push_str(&(unit_value * 100.0).to_string());
                 result.push_str("%");
             }
             Token::Dimension {
@@ -283,21 +309,22 @@ pub fn process_css<'a>(
                 if *has_sign && *value >= 0. {
                     result.push_str("+");
                 }
-                result.push_str(str!(value).as_str());
-                result.push_str(str!(unit).as_str());
+                result.push_str(&value.to_string());
+                result.push_str(&unit.to_string());
             }
             // #selector, #id...
             Token::IDHash(ref value) => {
-                curr_rule = str!();
+                curr_rule = "".to_string();
                 result.push_str("#");
-                result.push_str(&escape(value));
+                result.push_str(&format_ident(value));
             }
+            // url()
             Token::UnquotedUrl(ref value) => {
                 let is_import: bool = curr_rule == "import";
 
                 if is_import {
                     // Reset current at-rule value
-                    curr_rule = str!();
+                    curr_rule = "".to_string();
                 }
 
                 // Skip empty url()'s
@@ -313,13 +340,19 @@ pub fn process_css<'a>(
 
                 result.push_str("url(");
                 if is_import {
-                    let full_url = resolve_url(&parent_url, value).unwrap_or_default();
-                    let url_fragment = get_url_fragment(full_url.clone());
-                    match retrieve_asset(cache, client, &parent_url, &full_url, options, depth + 1)
-                    {
-                        Ok((css, final_url, _media_type)) => {
-                            let data_url = data_to_data_url(
-                                "text/css",
+                    let full_url: Url = resolve_url(&document_url, value);
+                    match retrieve_asset(
+                        cache,
+                        client,
+                        &document_url,
+                        &full_url,
+                        options,
+                        depth + 1,
+                    ) {
+                        Ok((css, final_url, media_type, charset)) => {
+                            let mut data_url = create_data_url(
+                                &media_type,
+                                &charset,
                                 embed_css(
                                     cache,
                                     client,
@@ -331,45 +364,43 @@ pub fn process_css<'a>(
                                 .as_bytes(),
                                 &final_url,
                             );
-                            let assembled_url: String =
-                                url_with_fragment(data_url.as_str(), url_fragment.as_str());
-                            result.push_str(enquote(assembled_url, false).as_str());
+                            data_url.set_fragment(full_url.fragment());
+                            result.push_str(format_quoted_string(&data_url.to_string()).as_str());
                         }
                         Err(_) => {
                             // Keep remote reference if unable to retrieve the asset
-                            if is_http_url(full_url.clone()) {
-                                let assembled_url: String =
-                                    url_with_fragment(full_url.as_str(), url_fragment.as_str());
-                                result.push_str(enquote(assembled_url, false).as_str());
+                            if full_url.scheme() == "http" || full_url.scheme() == "https" {
+                                result
+                                    .push_str(format_quoted_string(&full_url.to_string()).as_str());
                             }
                         }
                     }
                 } else {
                     if is_image_url_prop(curr_prop.as_str()) && options.no_images {
-                        result.push_str(enquote(str!(empty_image!()), false).as_str());
+                        result.push_str(format_quoted_string(EMPTY_IMAGE_DATA_URL).as_str());
                     } else {
-                        let full_url = resolve_url(&parent_url, value).unwrap_or_default();
-                        let url_fragment = get_url_fragment(full_url.clone());
+                        let full_url: Url = resolve_url(&document_url, value);
                         match retrieve_asset(
                             cache,
                             client,
-                            &parent_url,
+                            &document_url,
                             &full_url,
                             options,
                             depth + 1,
                         ) {
-                            Ok((data, final_url, media_type)) => {
-                                let data_url = data_to_data_url(&media_type, &data, &final_url);
-                                let assembled_url: String =
-                                    url_with_fragment(data_url.as_str(), url_fragment.as_str());
-                                result.push_str(enquote(assembled_url, false).as_str());
+                            Ok((data, final_url, media_type, charset)) => {
+                                let mut data_url =
+                                    create_data_url(&media_type, &charset, &data, &final_url);
+                                data_url.set_fragment(full_url.fragment());
+                                result
+                                    .push_str(format_quoted_string(&data_url.to_string()).as_str());
                             }
                             Err(_) => {
                                 // Keep remote reference if unable to retrieve the asset
-                                if is_http_url(full_url.clone()) {
-                                    let assembled_url: String =
-                                        url_with_fragment(full_url.as_str(), url_fragment.as_str());
-                                    result.push_str(enquote(assembled_url, false).as_str());
+                                if full_url.scheme() == "http" || full_url.scheme() == "https" {
+                                    result.push_str(
+                                        format_quoted_string(&full_url.to_string()).as_str(),
+                                    );
                                 }
                             }
                         }
@@ -377,6 +408,7 @@ pub fn process_css<'a>(
                 }
                 result.push_str(")");
             }
+            // =
             Token::Delim(ref value) => result.push_str(&value.to_string()),
             Token::Function(ref name) => {
                 let function_name: &str = &name.clone();
@@ -388,7 +420,7 @@ pub fn process_css<'a>(
                         process_css(
                             cache,
                             client,
-                            parent_url,
+                            document_url,
                             parser,
                             options,
                             depth,
@@ -413,28 +445,3 @@ pub fn process_css<'a>(
 
     Ok(result)
 }
-
-pub fn embed_css(
-    cache: &mut HashMap<String, Vec<u8>>,
-    client: &Client,
-    parent_url: &str,
-    css: &str,
-    options: &Options,
-    depth: u32,
-) -> String {
-    let mut input = ParserInput::new(&css);
-    let mut parser = Parser::new(&mut input);
-
-    process_css(
-        cache,
-        client,
-        parent_url,
-        &mut parser,
-        options,
-        depth,
-        "",
-        "",
-        "",
-    )
-    .unwrap()
-}

src/js.rs

@@ -1,4 +1,4 @@
-const JS_DOM_EVENT_ATTRS: &[&str] = &[
+const JS_DOM_EVENT_ATTRS: &'static [&str] = &[
     // From WHATWG HTML spec 8.1.5.2 "Event handlers on elements, Document objects, and Window objects":
     //   https://html.spec.whatwg.org/#event-handlers-on-elements,-document-objects,-and-window-objects
     //   https://html.spec.whatwg.org/#attributes-3 (table "List of event handler content attributes")

src/lib.rs

@@ -1,15 +1,6 @@
-#[macro_use]
-extern crate clap;
-
-#[macro_use]
-mod macros;
-
 pub mod css;
 pub mod html;
 pub mod js;
 pub mod opts;
 pub mod url;
 pub mod utils;
-
-#[cfg(test)]
-pub mod tests;

src/macros.rs

@@ -1,17 +0,0 @@
-#[macro_export]
-macro_rules! str {
-    () => {
-        String::new()
-    };
-    ($val: expr) => {
-        ToString::to_string(&$val)
-    };
-}
-
-#[macro_export]
-macro_rules! empty_image {
-    () => {
-"data:image/png;base64,\
-iVBORw0KGgoAAAANSUhEUgAAAA0AAAANCAQAAADY4iz3AAAAEUlEQVR42mNkwAkYR6UolgIACvgADsuK6xYAAAAASUVORK5CYII="
-    };
-}

src/main.rs

@@ -1,25 +1,23 @@
+use encoding_rs::Encoding;
+use html5ever::rcdom::RcDom;
 use reqwest::blocking::Client;
 use reqwest::header::{HeaderMap, HeaderValue, USER_AGENT};
 use std::collections::HashMap;
-use std::env;
 use std::fs;
 use std::io::{self, prelude::*, Error, Write};
 use std::path::Path;
 use std::process;
 use std::time::Duration;
+use url::Url;
 
 use monolith::html::{
-    add_favicon, create_metadata_tag, get_base_url, has_favicon, html_to_dom, set_base_url,
-    stringify_document, walk_and_embed_assets,
+    add_favicon, create_metadata_tag, get_base_url, get_charset, has_favicon, html_to_dom,
+    serialize_document, set_base_url, set_charset, walk_and_embed_assets,
 };
 use monolith::opts::Options;
-use monolith::url::{
-    data_to_data_url, is_data_url, is_file_url, is_http_url, parse_data_url, resolve_url,
-};
+use monolith::url::{create_data_url, resolve_url};
 use monolith::utils::retrieve_asset;
 
-mod macros;
-
 enum Output {
     Stdout(io::Stdout),
     File(fs::File),
@@ -34,115 +32,168 @@ impl Output {
         }
     }
 
-    fn writeln_str(&mut self, s: &str) -> Result<(), Error> {
+    fn write(&mut self, bytes: &Vec<u8>) -> Result<(), Error> {
         match self {
             Output::Stdout(stdout) => {
-                writeln!(stdout, "{}", s)?;
+                stdout.write_all(bytes)?;
+                // Ensure newline at end of output
+                if bytes.last() != Some(&b"\n"[0]) {
+                    stdout.write(b"\n")?;
+                }
                 stdout.flush()
             }
-            Output::File(f) => {
-                writeln!(f, "{}", s)?;
-                f.flush()
+            Output::File(file) => {
+                file.write_all(bytes)?;
+                // Ensure newline at end of output
+                if bytes.last() != Some(&b"\n"[0]) {
+                    file.write(b"\n")?;
+                }
+                file.flush()
             }
         }
     }
 }
 
-pub fn read_stdin() -> String {
-    let mut buffer = String::new();
-    for line in io::stdin().lock().lines() {
-        buffer += line.unwrap_or_default().as_str();
-        buffer += "\n";
+pub fn read_stdin() -> Vec<u8> {
+    let mut buffer: Vec<u8> = vec![];
+
+    match io::stdin().lock().read_to_end(&mut buffer) {
+        Ok(_) => buffer,
+        Err(_) => buffer,
     }
-    buffer
 }
 
 fn main() {
     let options = Options::from_args();
-    let original_target: &str = &options.target;
-    let target_url: &str;
-    let mut base_url: String;
-    let mut dom;
-    let mut use_stdin: bool = false;
 
-    // Pre-process the input
-    let cwd_normalized: String =
-        str!(env::current_dir().unwrap().to_str().unwrap()).replace("\\", "/");
-    let path = Path::new(original_target);
-    let mut target: String = str!(original_target.clone()).replace("\\", "/");
-    let path_is_relative: bool = path.is_relative();
-
-    // Determine exact target URL
-    if target.clone().len() == 0 {
+    // Check if target was provided
+    if options.target.len() == 0 {
         if !options.silent {
             eprintln!("No target specified");
         }
         process::exit(1);
-    } else if target.clone() == "-" {
+    }
+
+    // Check if custom charset is valid
+    if let Some(custom_charset) = options.charset.clone() {
+        if !Encoding::for_label_no_replacement(custom_charset.as_bytes()).is_some() {
+            eprintln!("Unknown encoding: {}", &custom_charset);
+            process::exit(1);
+        }
+    }
+
+    let mut use_stdin: bool = false;
+
+    let target_url = match options.target.as_str() {
+        "-" => {
             // Read from pipe (stdin)
             use_stdin = true;
-        // Default target URL to empty data URL; the user can control it via --base-url
-        target_url = "data:text/html,"
-    } else if is_http_url(target.clone()) || is_data_url(target.clone()) {
-        target_url = target.as_str();
-    } else if is_file_url(target.clone()) {
-        target_url = target.as_str();
-    } else if path.exists() {
-        if !path.is_file() {
+            // Set default target URL to an empty data URL; the user can set it via --base-url
+            Url::parse("data:text/html,").unwrap()
+        }
+        target => match Url::parse(&target) {
+            Ok(url) => match url.scheme() {
+                "data" | "file" | "http" | "https" => url,
+                unsupported_scheme => {
                     if !options.silent {
-                eprintln!("Local target is not a file: {}", original_target);
+                        eprintln!("Unsupported target URL type: {}", unsupported_scheme);
+                    }
+                    process::exit(1)
+                }
+            },
+            Err(_) => {
+                // Failed to parse given base URL (perhaps it's a filesystem path?)
+                let path: &Path = Path::new(&target);
+                match path.exists() {
+                    true => match path.is_file() {
+                        true => {
+                            let canonical_path = fs::canonicalize(&path).unwrap();
+                            match Url::from_file_path(canonical_path) {
+                                Ok(url) => url,
+                                Err(_) => {
+                                    if !options.silent {
+                                        eprintln!(
+                                            "Could not generate file URL out of given path: {}",
+                                            &target
+                                        );
                                     }
                                     process::exit(1);
                                 }
-        target.insert_str(0, if cfg!(windows) { "file:///" } else { "file://" });
-        if path_is_relative {
-            target.insert_str(if cfg!(windows) { 8 } else { 7 }, &cwd_normalized);
-            target.insert_str(
-                if cfg!(windows) { 8 } else { 7 } + &cwd_normalized.len(),
-                "/",
-            );
                             }
-        target_url = target.as_str();
-    } else {
-        target.insert_str(0, "http://");
-        target_url = target.as_str();
                         }
-
-    // Define output
-    let mut output = Output::new(&options.output).expect("Could not prepare output");
+                        false => {
+                            if !options.silent {
+                                eprintln!("Local target is not a file: {}", &target);
+                            }
+                            process::exit(1);
+                        }
+                    },
+                    false => {
+                        // It is not a FS path, now we do what browsers do:
+                        // prepend "http://" and hope it points to a website
+                        Url::parse(&format!("http://{hopefully_url}", hopefully_url = &target))
+                            .unwrap()
+                    }
+                }
+            }
+        },
+    };
 
     // Initialize client
     let mut cache = HashMap::new();
     let mut header_map = HeaderMap::new();
+    if let Some(user_agent) = &options.user_agent {
         header_map.insert(
             USER_AGENT,
-        HeaderValue::from_str(&options.user_agent).expect("Invalid User-Agent header specified"),
+            HeaderValue::from_str(&user_agent).expect("Invalid User-Agent header specified"),
         );
-    let timeout: u64 = if options.timeout > 0 {
-        options.timeout
+    }
+    let client = if options.timeout > 0 {
+        Client::builder().timeout(Duration::from_secs(options.timeout))
     } else {
-        std::u64::MAX / 4
-    };
-    let client = Client::builder()
-        .timeout(Duration::from_secs(timeout))
+        // No timeout is default
+        Client::builder()
+    }
     .danger_accept_invalid_certs(options.insecure)
     .default_headers(header_map)
     .build()
     .expect("Failed to initialize HTTP client");
 
-    // At this stage we assume that the base URL is the same as the target URL
-    base_url = str!(target_url);
+    // At first we assume that base URL is the same as target URL
+    let mut base_url: Url = target_url.clone();
+
+    let data: Vec<u8>;
+    let mut document_encoding: String = "".to_string();
+    let mut dom: RcDom;
 
     // Retrieve target document
     if use_stdin {
-        dom = html_to_dom(&read_stdin());
-    } else if is_file_url(target_url) || is_http_url(target_url) {
-        match retrieve_asset(&mut cache, &client, target_url, target_url, &options, 0) {
-            Ok((data, final_url, _media_type)) => {
-                if options.base_url.clone().unwrap_or(str!()).is_empty() {
-                    base_url = final_url
+        data = read_stdin();
+    } else if target_url.scheme() == "file"
+        || (target_url.scheme() == "http" || target_url.scheme() == "https")
+        || target_url.scheme() == "data"
+    {
+        match retrieve_asset(&mut cache, &client, &target_url, &target_url, &options, 0) {
+            Ok((retrieved_data, final_url, media_type, charset)) => {
+                // Make sure the media type is text/html
+                if !media_type.eq_ignore_ascii_case("text/html") {
+                    if !options.silent {
+                        eprintln!("Unsupported document media type");
                     }
-                dom = html_to_dom(&String::from_utf8_lossy(&data));
+                    process::exit(1);
+                }
+
+                if options
+                    .base_url
+                    .clone()
+                    .unwrap_or("".to_string())
+                    .is_empty()
+                {
+                    base_url = final_url;
+                }
+
+                data = retrieved_data;
+                document_encoding = charset;
             }
             Err(_) => {
                 if !options.silent {
@@ -151,79 +202,128 @@ fn main() {
                 process::exit(1);
             }
         }
-    } else if is_data_url(target_url) {
-        let (media_type, data): (String, Vec<u8>) = parse_data_url(target_url);
-        if !media_type.eq_ignore_ascii_case("text/html") {
-            if !options.silent {
-                eprintln!("Unsupported data URL media type");
-            }
-            process::exit(1);
-        }
-        dom = html_to_dom(&String::from_utf8_lossy(&data));
     } else {
         process::exit(1);
     }
 
+    // Initial parse
+    dom = html_to_dom(&data, document_encoding.clone());
+
+    // TODO: investigate if charset from filesystem/data URL/HTTP headers
+    //       has say over what's specified in HTML
+
+    // Attempt to determine document's charset
+    if let Some(html_charset) = get_charset(&dom.document) {
+        if !html_charset.is_empty() {
+            // Check if the charset specified inside HTML is valid
+            if let Some(encoding) = Encoding::for_label_no_replacement(html_charset.as_bytes()) {
+                document_encoding = html_charset;
+                dom = html_to_dom(&data, encoding.name().to_string());
+            }
+        }
+    }
+
     // Use custom base URL if specified, read and use what's in the DOM otherwise
-    if !options.base_url.clone().unwrap_or(str!()).is_empty() {
-        if is_data_url(options.base_url.clone().unwrap()) {
+    let custom_base_url: String = options.base_url.clone().unwrap_or("".to_string());
+    if custom_base_url.is_empty() {
+        // No custom base URL is specified
+        // Try to see if document has BASE element
+        if let Some(existing_base_url) = get_base_url(&dom.document) {
+            base_url = resolve_url(&target_url, &existing_base_url);
+        }
+    } else {
+        // Custom base URL provided
+        match Url::parse(&custom_base_url) {
+            Ok(parsed_url) => {
+                if parsed_url.scheme() == "file" {
+                    // File base URLs can only work with
+                    // documents saved from filesystem
+                    if target_url.scheme() == "file" {
+                        base_url = parsed_url;
+                    }
+                } else {
+                    base_url = parsed_url;
+                }
+            }
+            Err(_) => {
+                // Failed to parse given base URL, perhaps it's a filesystem path?
+                if target_url.scheme() == "file" {
+                    // Relative paths could work for documents saved from filesystem
+                    let path: &Path = Path::new(&custom_base_url);
+                    if path.exists() {
+                        match Url::from_file_path(fs::canonicalize(&path).unwrap()) {
+                            Ok(file_url) => {
+                                base_url = file_url;
+                            }
+                            Err(_) => {
                                 if !options.silent {
-                eprintln!("Data URLs cannot be used as base URL");
+                                    eprintln!(
+                                        "Could not map given path to base URL: {}",
+                                        custom_base_url
+                                    );
                                 }
                                 process::exit(1);
-        } else {
-            base_url = options.base_url.clone().unwrap();
                             }
-    } else {
-        if let Some(existing_base_url) = get_base_url(&dom.document) {
-            base_url = resolve_url(target_url, existing_base_url).unwrap();
+                        }
+                    }
+                }
+            }
         }
     }
 
-    // Embed remote assets
+    // Traverse through the document and embed remote assets
     walk_and_embed_assets(&mut cache, &client, &base_url, &dom.document, &options, 0);
 
-    // Update or add new BASE tag to reroute network requests and hash-links in the final document
+    // Update or add new BASE element to reroute network requests and hash-links
     if let Some(new_base_url) = options.base_url.clone() {
         dom = set_base_url(&dom.document, new_base_url);
     }
 
     // Request and embed /favicon.ico (unless it's already linked in the document)
-    if !options.no_images && is_http_url(target_url) && !has_favicon(&dom.document) {
-        let favicon_ico_url: String = resolve_url(&base_url, "/favicon.ico").unwrap();
+    if !options.no_images
+        && (target_url.scheme() == "http" || target_url.scheme() == "https")
+        && !has_favicon(&dom.document)
+    {
+        let favicon_ico_url: Url = resolve_url(&base_url, "/favicon.ico");
 
         match retrieve_asset(
             &mut cache,
             &client,
-            &base_url,
+            &target_url,
             &favicon_ico_url,
             &options,
             0,
         ) {
-            Ok((data, final_url, media_type)) => {
-                let favicon_data_url: String = data_to_data_url(&media_type, &data, &final_url);
-                dom = add_favicon(&dom.document, favicon_data_url);
+            Ok((data, final_url, media_type, charset)) => {
+                let favicon_data_url: Url =
+                    create_data_url(&media_type, &charset, &data, &final_url);
+                dom = add_favicon(&dom.document, favicon_data_url.to_string());
             }
             Err(_) => {
-                // Failed to retrieve favicon.ico
+                // Failed to retrieve /favicon.ico
             }
         }
     }
 
+    // Save using specified charset, if given
+    if let Some(custom_charset) = options.charset.clone() {
+        document_encoding = custom_charset;
+        dom = set_charset(dom, document_encoding.clone());
+    }
+
     // Serialize DOM tree
-    let mut result: String = stringify_document(&dom.document, &options);
+    let mut result: Vec<u8> = serialize_document(dom, document_encoding, &options);
 
-    // Add metadata tag
+    // Prepend metadata comment tag
     if !options.no_metadata {
-        let metadata_comment: String = create_metadata_tag(&target_url);
-        result.insert_str(0, &metadata_comment);
-        if metadata_comment.len() > 0 {
-            result.insert_str(metadata_comment.len(), "\n");
-        }
+        let mut metadata_comment: String = create_metadata_tag(&target_url);
+        metadata_comment += "\n";
+        result.splice(0..0, metadata_comment.as_bytes().to_vec());
     }
 
+    // Define output
+    let mut output = Output::new(&options.output).expect("Could not prepare output");
+
     // Write result into stdout or file
-    output
-        .writeln_str(&result)
-        .expect("Could not write HTML output");
+    output.write(&result).expect("Could not write HTML output");
 }

src/opts.rs

@@ -1,11 +1,15 @@
-use clap::{App, Arg};
+use clap::{App, Arg, ArgAction};
+use std::env;
 
 #[derive(Default)]
 pub struct Options {
     pub no_audio: bool,
     pub base_url: Option<String>,
     pub no_css: bool,
+    pub charset: Option<String>,
+    pub domains: Option<Vec<String>>,
     pub ignore_errors: bool,
+    pub exclude_domains: bool,
     pub no_frames: bool,
     pub no_fonts: bool,
     pub no_images: bool,
@@ -16,12 +20,14 @@ pub struct Options {
     pub output: String,
     pub silent: bool,
     pub timeout: u64,
-    pub user_agent: String,
+    pub user_agent: Option<String>,
     pub no_video: bool,
     pub target: String,
+    pub no_color: bool,
+    pub unwrap_noscript: bool,
 }
 
-const ASCII: &str = " \
+const ASCII: &'static str = " \
  _____     ______________    __________      ___________________    ___
 |     \\   /              \\  |          |    |                   |  |   |
 |      \\_/       __       \\_|    __    |    |    ___     ___    |__|   |
@@ -31,19 +37,32 @@ const ASCII: &str = " \
 |___|       |__________|  \\_____________________|   |___|   |___|  |___|
 ";
 const DEFAULT_NETWORK_TIMEOUT: u64 = 120;
-const DEFAULT_USER_AGENT: &str =
+const DEFAULT_USER_AGENT: &'static str =
     "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:73.0) Gecko/20100101 Firefox/73.0";
+const ENV_VAR_NO_COLOR: &str = "NO_COLOR";
+const ENV_VAR_TERM: &str = "TERM";
 
 impl Options {
     pub fn from_args() -> Options {
         let app = App::new(env!("CARGO_PKG_NAME"))
-            .version(crate_version!())
-            .author(crate_authors!("\n"))
-            .about(format!("{}\n{}", ASCII, crate_description!()).as_str())
+            .version(env!("CARGO_PKG_VERSION"))
+            .author(format!("\n{}\n\n", env!("CARGO_PKG_AUTHORS").replace(':', "\n")).as_str())
+            .about(format!("{}\n{}", ASCII, env!("CARGO_PKG_DESCRIPTION")).as_str())
             .args_from_usage("-a, --no-audio 'Removes audio sources'")
             .args_from_usage("-b, --base-url=[http://localhost/] 'Sets custom base URL'")
             .args_from_usage("-c, --no-css 'Removes CSS'")
+            .args_from_usage("-C, --charset=[UTF-8] 'Enforces custom encoding'")
+            .arg(
+                Arg::with_name("domains")
+                    .short('d')
+                    .long("domains")
+                    .takes_value(true)
+                    .value_name("DOMAINS")
+                    .action(ArgAction::Append)
+                    .help("Whitelist of domains"),
+            )
             .args_from_usage("-e, --ignore-errors 'Ignore network errors'")
+            .args_from_usage("-E, --exclude-domains 'Treat specified domains as blacklist'")
             .args_from_usage("-f, --no-frames 'Removes frames and iframes'")
             .args_from_usage("-F, --no-fonts 'Removes fonts'")
             .args_from_usage("-i, --no-images 'Removes images'")
@@ -51,7 +70,12 @@ impl Options {
             .args_from_usage("-j, --no-js 'Removes JavaScript'")
             .args_from_usage("-k, --insecure 'Allows invalid X.509 (TLS) certificates'")
             .args_from_usage("-M, --no-metadata 'Excludes timestamp and source information'")
-            .args_from_usage("-o, --output=[document.html] 'Writes output to <file>'")
+            .args_from_usage(
+                "-n, --unwrap-noscript 'Replaces NOSCRIPT elements with their contents'",
+            )
+            .args_from_usage(
+                "-o, --output=[document.html] 'Writes output to <file>, use - for STDOUT'",
+            )
             .args_from_usage("-s, --silent 'Suppresses verbosity'")
             .args_from_usage("-t, --timeout=[60] 'Adjusts network request timeout'")
             .args_from_usage("-u, --user-agent=[Firefox] 'Sets custom User-Agent string'")
@@ -61,7 +85,7 @@ impl Options {
                     .required(true)
                     .takes_value(true)
                     .index(1)
-                    .help("URL or file path"),
+                    .help("URL or file path, use - for STDIN"),
             )
             .get_matches();
         let mut options: Options = Options::default();
@@ -73,10 +97,18 @@ impl Options {
             .to_string();
         options.no_audio = app.is_present("no-audio");
         if let Some(base_url) = app.value_of("base-url") {
-            options.base_url = Some(str!(base_url));
+            options.base_url = Some(base_url.to_string());
         }
         options.no_css = app.is_present("no-css");
+        if let Some(charset) = app.value_of("charset") {
+            options.charset = Some(charset.to_string());
+        }
+        if let Some(domains) = app.get_many::<String>("domains") {
+            let list_of_domains: Vec<String> = domains.map(|v| v.clone()).collect::<Vec<_>>();
+            options.domains = Some(list_of_domains);
+        }
         options.ignore_errors = app.is_present("ignore-errors");
+        options.exclude_domains = app.is_present("exclude-domains");
         options.no_frames = app.is_present("no-frames");
         options.no_fonts = app.is_present("no-fonts");
         options.no_images = app.is_present("no-images");
@@ -91,12 +123,22 @@ impl Options {
             .unwrap_or(&DEFAULT_NETWORK_TIMEOUT.to_string())
             .parse::<u64>()
             .unwrap();
-        options.user_agent = app
-            .value_of("user-agent")
-            .unwrap_or(DEFAULT_USER_AGENT)
-            .to_string();
+        if let Some(user_agent) = app.value_of("user-agent") {
+            options.user_agent = Some(user_agent.to_string());
+        } else {
+            options.user_agent = Some(DEFAULT_USER_AGENT.to_string());
+        }
+        options.unwrap_noscript = app.is_present("unwrap-noscript");
         options.no_video = app.is_present("no-video");
 
+        options.no_color =
+            env::var_os(ENV_VAR_NO_COLOR).is_some() || atty::isnt(atty::Stream::Stderr);
+        if let Some(term) = env::var_os(ENV_VAR_TERM) {
+            if term == "dumb" {
+                options.no_color = true;
+            }
+        }
+
         options
     }
 }

src/tests/cli/basic.rs

@@ -1,559 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use assert_cmd::prelude::*;
-    use std::env;
-    use std::io::Write;
-    use std::process::Command;
-    use tempfile::NamedTempFile;
-
-    #[test]
-    fn print_version() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd.arg("-V").output().unwrap();
-
-        // STDOUT should contain program name and version
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            format!("{} {}\n", env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"))
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn bad_input_empty_target() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd.arg("").output().unwrap();
-
-        // STDOUT should be empty
-        assert_eq!(std::str::from_utf8(&out.stdout).unwrap(), "");
-
-        // STDERR should contain error description
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            "No target specified\n"
-        );
-
-        // The exit code should be 1
-        out.assert().code(1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn bad_input_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd.arg("data:,Hello%2C%20World!").output().unwrap();
-
-        // STDOUT should contain HTML
-        assert_eq!(std::str::from_utf8(&out.stdout).unwrap(), "");
-
-        // STDERR should contain error description
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            "Unsupported data URL media type\n"
-        );
-
-        // The exit code should be 1
-        out.assert().code(1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn isolate_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-I")
-            .arg("data:text/html,Hello%2C%20World!")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain isolated HTML
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head>\
-            <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-inline' data:;\"></meta>\
-            </head><body>Hello, World!</body></html>\n"
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn remove_css_from_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-c")
-            .arg("data:text/html,<style>body{background-color:pink}</style>Hello")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML with no CSS
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head>\
-            <meta http-equiv=\"Content-Security-Policy\" content=\"style-src 'none';\"></meta>\
-            <style></style>\
-            </head><body>Hello</body></html>\n"
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn remove_fonts_from_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-F")
-            .arg("data:text/html,<style>@font-face { font-family: myFont; src: url(font.woff); }</style>Hi")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML with no web fonts
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head>\
-            <meta http-equiv=\"Content-Security-Policy\" content=\"font-src 'none';\"></meta>\
-            <style></style>\
-            </head><body>Hi</body></html>\n"
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn remove_frames_from_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-f")
-            .arg("data:text/html,<iframe src=\"https://duckduckgo.com\"></iframe>Hi")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML with no iframes
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head>\
-            <meta http-equiv=\"Content-Security-Policy\" content=\"frame-src 'none'; child-src 'none';\"></meta>\
-            </head><body><iframe src=\"\"></iframe>Hi</body></html>\n"
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn remove_images_from_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-i")
-            .arg("data:text/html,<img src=\"https://google.com\"/>Hi")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML with no images
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            format!(
-                "<html>\
-                <head>\
-                <meta http-equiv=\"Content-Security-Policy\" content=\"img-src data:;\"></meta>\
-                </head>\
-                <body>\
-                <img src=\"{empty_image}\">\
-                Hi\
-                </body>\
-                </html>\n",
-                empty_image = empty_image!()
-            )
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn remove_js_from_data_url() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-j")
-            .arg("data:text/html,<script>alert(2)</script>Hi")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML with no JS
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html>\
-            <head>\
-            <meta http-equiv=\"Content-Security-Policy\" content=\"script-src 'none';\"></meta>\
-            <script></script></head>\
-            <body>Hi</body>\
-            </html>\n"
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn local_file_target_input() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let cwd_normalized: String =
-            str!(env::current_dir().unwrap().to_str().unwrap()).replace("\\", "/");
-        let out = cmd
-            .arg("-M")
-            .arg(if cfg!(windows) {
-                "src\\tests\\data\\basic\\local-file.html"
-            } else {
-                "src/tests/data/basic/local-file.html"
-            })
-            .output()
-            .unwrap();
-        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
-
-        // STDOUT should contain HTML from the local file
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "\
-            <!DOCTYPE html><html lang=\"en\"><head>\n  \
-            <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n  \
-            <title>Local HTML file</title>\n  \
-            <link rel=\"stylesheet\" type=\"text/css\" href=\"data:text/css;base64,Ym9keSB7CiAgICBiYWNrZ3JvdW5kLWNvbG9yOiAjMDAwOwogICAgY29sb3I6ICNmZmY7Cn0K\">\n  \
-            <link rel=\"stylesheet\" type=\"text/css\">\n</head>\n\n<body>\n  \
-            <img alt=\"\">\n  \
-            <a href=\"file://local-file.html/\">Tricky href</a>\n  \
-            <a href=\"https://github.com/Y2Z/monolith\">Remote URL</a>\n  \
-            <script src=\"data:application/javascript;base64,ZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPSAiZ3JlZW4iOwpkb2N1bWVudC5ib2R5LnN0eWxlLmNvbG9yID0gInJlZCI7Cg==\"></script>\n\n\n\n\
-            </body></html>\n\
-            "
-        );
-
-        // STDERR should contain list of retrieved file URLs
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            format!(
-                "\
-                {file}{cwd}/src/tests/data/basic/local-file.html\n \
-                {file}{cwd}/src/tests/data/basic/local-style.css\n \
-                {file}{cwd}/src/tests/data/basic/local-script.js\n\
-                ",
-                file = file_url_protocol,
-                cwd = cwd_normalized
-            )
-        );
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn local_file_target_input_absolute_target_path() -> Result<(), Box<dyn std::error::Error>> {
-        let cwd = env::current_dir().unwrap();
-        let cwd_normalized: String =
-            str!(env::current_dir().unwrap().to_str().unwrap()).replace("\\", "/");
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("-jciI")
-            .arg(if cfg!(windows) {
-                format!(
-                    "{cwd}\\src\\tests\\data\\basic\\local-file.html",
-                    cwd = cwd.to_str().unwrap()
-                )
-            } else {
-                format!(
-                    "{cwd}/src/tests/data/basic/local-file.html",
-                    cwd = cwd.to_str().unwrap()
-                )
-            })
-            .output()
-            .unwrap();
-        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
-
-        // STDOUT should contain HTML from the local file
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            format!(
-                "\
-                <!DOCTYPE html><html lang=\"en\"><head>\
-                <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-inline' data:; style-src 'none'; script-src 'none'; img-src data:;\"></meta>\n  \
-                <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n  \
-                <title>Local HTML file</title>\n  \
-                <link rel=\"stylesheet\" type=\"text/css\">\n  \
-                <link rel=\"stylesheet\" type=\"text/css\">\n</head>\n\n<body>\n  \
-                <img src=\"{empty_image}\" alt=\"\">\n  \
-                <a href=\"file://local-file.html/\">Tricky href</a>\n  \
-                <a href=\"https://github.com/Y2Z/monolith\">Remote URL</a>\n  \
-                <script></script>\n\n\n\n\
-                </body></html>\n\
-                ",
-                empty_image = empty_image!()
-            )
-        );
-
-        // STDERR should contain only the target file
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            format!(
-                "{file}{cwd}/src/tests/data/basic/local-file.html\n",
-                file = file_url_protocol,
-                cwd = cwd_normalized,
-            )
-        );
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn local_file_url_target_input() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let cwd_normalized: String =
-            str!(env::current_dir().unwrap().to_str().unwrap()).replace("\\", "/");
-        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
-        let out = cmd
-            .arg("-M")
-            .arg("-cji")
-            .arg(if cfg!(windows) {
-                format!(
-                    "{file}{cwd}/src/tests/data/basic/local-file.html",
-                    file = file_url_protocol,
-                    cwd = cwd_normalized,
-                )
-            } else {
-                format!(
-                    "{file}{cwd}/src/tests/data/basic/local-file.html",
-                    file = file_url_protocol,
-                    cwd = cwd_normalized,
-                )
-            })
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML from the local file
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            format!(
-                "\
-                <!DOCTYPE html><html lang=\"en\"><head>\
-                <meta http-equiv=\"Content-Security-Policy\" content=\"style-src 'none'; script-src 'none'; img-src data:;\"></meta>\n  \
-                <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n  \
-                <title>Local HTML file</title>\n  \
-                <link rel=\"stylesheet\" type=\"text/css\">\n  \
-                <link rel=\"stylesheet\" type=\"text/css\">\n</head>\n\n<body>\n  \
-                <img src=\"{empty_image}\" alt=\"\">\n  \
-                <a href=\"file://local-file.html/\">Tricky href</a>\n  \
-                <a href=\"https://github.com/Y2Z/monolith\">Remote URL</a>\n  \
-                <script></script>\n\n\n\n\
-                </body></html>\n\
-                ",
-                empty_image = empty_image!()
-            )
-        );
-
-        // STDERR should contain list of retrieved file URLs
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            if cfg!(windows) {
-                format!(
-                    "{file}{cwd}/src/tests/data/basic/local-file.html\n",
-                    file = file_url_protocol,
-                    cwd = cwd_normalized,
-                )
-            } else {
-                format!(
-                    "{file}{cwd}/src/tests/data/basic/local-file.html\n",
-                    file = file_url_protocol,
-                    cwd = cwd_normalized,
-                )
-            }
-        );
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn security_disallow_local_assets_within_data_url_targets(
-    ) -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let out = cmd
-            .arg("-M")
-            .arg("data:text/html,%3Cscript%20src=\"src/tests/data/basic/local-script.js\"%3E%3C/script%3E")
-            .output()
-            .unwrap();
-
-        // STDOUT should contain HTML with no JS in it
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head><script></script></head><body></body></html>\n"
-        );
-
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn embed_file_url_local_asset_within_style_attribute() -> Result<(), Box<dyn std::error::Error>>
-    {
-        let file_url_prefix: &str = if cfg!(windows) { "file:///" } else { "file://" };
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let mut file_svg = NamedTempFile::new()?;
-        writeln!(file_svg, "<svg version=\"1.1\" baseProfile=\"full\" width=\"300\" height=\"200\" xmlns=\"http://www.w3.org/2000/svg\">\
-                            <rect width=\"100%\" height=\"100%\" fill=\"red\" />\
-                            <circle cx=\"150\" cy=\"100\" r=\"80\" fill=\"green\" />\
-                            <text x=\"150\" y=\"125\" font-size=\"60\" text-anchor=\"middle\" fill=\"white\">SVG</text>\
-                            </svg>\n")?;
-        let mut file_html = NamedTempFile::new()?;
-        writeln!(
-            file_html,
-            "<div style='background-image: url(\"{file}{path}\")'></div>\n",
-            file = file_url_prefix,
-            path = str!(file_svg.path().to_str().unwrap()).replace("\\", "/"),
-        )?;
-        let out = cmd.arg("-M").arg(file_html.path()).output().unwrap();
-
-        // STDOUT should contain HTML with date URL for background-image in it
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head></head><body><div style=\"background-image: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cmVjdCB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWxsPSJyZWQiIC8+PGNpcmNsZSBjeD0iMTUwIiBjeT0iMTAwIiByPSI4MCIgZmlsbD0iZ3JlZW4iIC8+PHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+PC9zdmc+Cgo=')\"></div>\n\n</body></html>\n"
-        );
-
-        // STDERR should list temporary files that got retrieved
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            format!(
-                "\
-                {file}{html_path}\n \
-                {file}{svg_path}\n\
-                ",
-                file = file_url_prefix,
-                html_path = str!(file_html.path().to_str().unwrap()).replace("\\", "/"),
-                svg_path = str!(file_svg.path().to_str().unwrap()).replace("\\", "/"),
-            )
-        );
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-
-    #[test]
-    fn css_import_string() -> Result<(), Box<dyn std::error::Error>> {
-        let file_url_prefix: &str = if cfg!(windows) { "file:///" } else { "file://" };
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-        let mut file_css = NamedTempFile::new()?;
-        writeln!(file_css, "body{{background-color:#000;color:#fff}}")?;
-        let mut file_html = NamedTempFile::new()?;
-        writeln!(
-            file_html,
-            "\
-            <style>\n\
-            @charset 'UTF-8';\n\
-            \n\
-            @import '{file}{css_path}';\n\
-            \n\
-            @import url({file}{css_path});\n\
-            \n\
-            @import url('{file}{css_path}')\n\
-            </style>\n\
-            ",
-            file = file_url_prefix,
-            css_path = str!(file_css.path().to_str().unwrap()).replace("\\", "/"),
-        )?;
-        let out = cmd.arg("-M").arg(file_html.path()).output().unwrap();
-
-        // STDOUT should contain embedded CSS url()'s
-        assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
-            "<html><head><style>\n@charset 'UTF-8';\n\n@import 'data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K';\n\n@import url('data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K');\n\n@import url('data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K')\n</style>\n\n</head><body></body></html>\n"
-        );
-
-        // STDERR should list temporary files that got retrieved
-        assert_eq!(
-            std::str::from_utf8(&out.stderr).unwrap(),
-            format!(
-                "\
-                {file}{html_path}\n \
-                {file}{css_path}\n \
-                {file}{css_path}\n \
-                {file}{css_path}\n\
-                ",
-                file = file_url_prefix,
-                html_path = str!(file_html.path().to_str().unwrap()).replace("\\", "/"),
-                css_path = str!(file_css.path().to_str().unwrap()).replace("\\", "/"),
-            )
-        );
-
-        // The exit code should be 0
-        out.assert().code(0);
-
-        Ok(())
-    }
-}

src/tests/cli/mod.rs

@@ -1,2 +0,0 @@
-mod base_url;
-mod basic;

src/tests/css/enquote.rs

@@ -1,53 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::css;
-
-    #[test]
-    fn empty_input_single_quotes() {
-        assert_eq!(css::enquote(str!(""), false), "''");
-    }
-
-    #[test]
-    fn empty_input_double_quotes() {
-        assert_eq!(css::enquote(str!(""), true), "\"\"");
-    }
-
-    #[test]
-    fn apostrophes_single_quotes() {
-        assert_eq!(
-            css::enquote(str!("It's a lovely day, don't you think?"), false),
-            "'It\\'s a lovely day, don\\'t you think?'"
-        );
-    }
-
-    #[test]
-    fn apostrophes_double_quotes() {
-        assert_eq!(
-            css::enquote(str!("It's a lovely day, don't you think?"), true),
-            "\"It's a lovely day, don't you think?\""
-        );
-    }
-
-    #[test]
-    fn feet_and_inches_single_quotes() {
-        assert_eq!(
-            css::enquote(str!("5'2\", 6'5\""), false),
-            "'5\\'2\", 6\\'5\"'"
-        );
-    }
-
-    #[test]
-    fn feet_and_inches_double_quotes() {
-        assert_eq!(
-            css::enquote(str!("5'2\", 6'5\""), true),
-            "\"5'2\\\", 6'5\\\"\""
-        );
-    }
-}

src/tests/html/walk_and_embed_assets.rs

@@ -1,329 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use html5ever::serialize::{serialize, SerializeOpts};
-    use reqwest::blocking::Client;
-    use std::collections::HashMap;
-
-    use crate::html;
-    use crate::opts::Options;
-
-    #[test]
-    fn basic() {
-        let cache = &mut HashMap::new();
-
-        let html = "<div><P></P></div>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-
-        let mut options = Options::default();
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><body><div><p></p></div></body></html>"
-        );
-    }
-
-    #[test]
-    fn ensure_no_recursive_iframe() {
-        let html = "<div><P></P><iframe src=\"\"></iframe></div>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><body><div><p></p><iframe src=\"\"></iframe></div></body></html>"
-        );
-    }
-
-    #[test]
-    fn ensure_no_recursive_frame() {
-        let html = "<frameset><frame src=\"\"></frameset>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><frameset><frame src=\"\"></frameset></html>"
-        );
-    }
-
-    #[test]
-    fn no_css() {
-        let html = "<link rel=\"stylesheet\" href=\"main.css\">\
-                    <style>html{background-color: #000;}</style>\
-                    <div style=\"display: none;\"></div>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_css = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html>\
-            <head>\
-            <link rel=\"stylesheet\">\
-            <style></style>\
-            </head>\
-            <body>\
-            <div></div>\
-            </body>\
-            </html>"
-        );
-    }
-
-    #[test]
-    fn no_images() {
-        let html = "<link rel=\"icon\" href=\"favicon.ico\">\
-                    <div><img src=\"http://localhost/assets/mono_lisa.png\" /></div>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_images = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            format!(
-                "<html>\
-                    <head>\
-                        <link rel=\"icon\">\
-                    </head>\
-                    <body>\
-                        <div>\
-                            <img src=\"{empty_image}\">\
-                        </div>\
-                    </body>\
-                </html>",
-                empty_image = empty_image!()
-            )
-        );
-    }
-
-    #[test]
-    fn no_body_background_images() {
-        let html =
-            "<body background=\"no/such/image.png\" background=\"no/such/image2.png\"></body>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_images = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><body></body></html>"
-        );
-    }
-
-    #[test]
-    fn no_frames() {
-        let html = "<frameset><frame src=\"http://trackbook.com\"></frameset>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_frames = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><frameset><frame src=\"\"></frameset></html>"
-        );
-    }
-
-    #[test]
-    fn no_iframes() {
-        let html = "<iframe src=\"http://trackbook.com\"></iframe>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_frames = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><body><iframe src=\"\"></iframe></body></html>"
-        );
-    }
-
-    #[test]
-    fn no_js() {
-        let html = "<div onClick=\"void(0)\">\
-                        <script src=\"http://localhost/assets/some.js\"></script>\
-                        <script>alert(1)</script>\
-                    </div>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_js = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html><head></head><body><div><script></script>\
-            <script></script></div></body></html>"
-        );
-    }
-
-    #[test]
-    fn discards_integrity() {
-        let html = "<title>No integrity</title>\
-                    <link integrity=\"sha384-...\" rel=\"something\"/>\
-                    <script integrity=\"sha384-...\" src=\"some.js\"></script>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_css = true;
-        options.no_frames = true;
-        options.no_js = true;
-        options.no_images = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html>\
-                <head><title>No integrity</title><link rel=\"something\"><script></script></head>\
-                <body></body>\
-            </html>"
-        );
-    }
-
-    #[test]
-    fn removes_unwanted_meta_tags() {
-        let html = "<html>\
-            <head>\
-                <meta http-equiv=\"Refresh\" value=\"20\"/>\
-                <meta http-equiv=\"Location\" value=\"https://freebsd.org\"/>\
-            </head>\
-            <body></body>\
-        </html>";
-        let dom = html::html_to_dom(&html);
-        let url = "http://localhost";
-        let cache = &mut HashMap::new();
-
-        let mut options = Options::default();
-        options.no_css = true;
-        options.no_frames = true;
-        options.no_js = true;
-        options.no_images = true;
-        options.silent = true;
-
-        let client = Client::new();
-
-        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
-
-        let mut buf: Vec<u8> = Vec::new();
-        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
-
-        assert_eq!(
-            buf.iter().map(|&c| c as char).collect::<String>(),
-            "<html>\
-                <head>\
-                    <meta http-equiv=\"disabled by monolith (Refresh)\" value=\"20\">\
-                    <meta http-equiv=\"disabled by monolith (Location)\" value=\"https://freebsd.org\">\
-                </head>\
-                <body></body>\
-            </html>"
-        );
-    }
-}

src/tests/url/data_to_data_url.rs

@@ -1,31 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn encode_string_with_specific_media_type() {
-        let mime = "application/javascript";
-        let data = "var word = 'hello';\nalert(word);\n";
-        let data_url = url::data_to_data_url(mime, data.as_bytes(), "");
-
-        assert_eq!(
-            &data_url,
-            "data:application/javascript;base64,dmFyIHdvcmQgPSAnaGVsbG8nOwphbGVydCh3b3JkKTsK"
-        );
-    }
-
-    #[test]
-    fn encode_append_fragment() {
-        let data = "<svg></svg>\n";
-        let data_url = url::data_to_data_url("image/svg+xml", data.as_bytes(), "");
-
-        assert_eq!(&data_url, "data:image/svg+xml;base64,PHN2Zz48L3N2Zz4K");
-    }
-}

src/tests/url/decode_url.rs

@@ -1,39 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn decode_unicode_characters() {
-        assert_eq!(
-            url::decode_url(str!(
-                "%E6%A4%9C%E3%83%92%E3%83%A0%E8%A7%A3%E5%A1%97%E3%82%83%E3%83%83%20%3D%20%E3%82%B5"
-            )),
-            "検ヒム解塗ゃッ = サ"
-        );
-    }
-
-    #[test]
-    fn decode_file_url() {
-        assert_eq!(
-            url::decode_url(str!("file:///tmp/space%20here/test%231.html")),
-            "file:///tmp/space here/test#1.html"
-        );
-    }
-
-    #[test]
-    fn plus_sign() {
-        assert_eq!(
-            url::decode_url(str!(
-                "fonts.somewhere.com/css?family=Open+Sans:300,400,400italic,600,600italic"
-            )),
-            "fonts.somewhere.com/css?family=Open+Sans:300,400,400italic,600,600italic"
-        );
-    }
-}

src/tests/url/file_url_to_fs_path.rs

@@ -1,41 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn remove_protocl_and_fragment() {
-        if cfg!(windows) {
-            assert_eq!(
-                url::file_url_to_fs_path("file:///C:/documents/some-path/some-file.svg#fragment"),
-                "C:\\documents\\some-path\\some-file.svg"
-            );
-        } else {
-            assert_eq!(
-                url::file_url_to_fs_path("file:///tmp/some-path/some-file.svg#fragment"),
-                "/tmp/some-path/some-file.svg"
-            );
-        }
-    }
-
-    #[test]
-    fn decodes_urls() {
-        if cfg!(windows) {
-            assert_eq!(
-                url::file_url_to_fs_path("file:///C:/Documents%20and%20Settings/some-file.html"),
-                "C:\\Documents and Settings\\some-file.html"
-            );
-        } else {
-            assert_eq!(
-                url::file_url_to_fs_path("file:///home/user/My%20Documents"),
-                "/home/user/My Documents"
-            );
-        }
-    }
-}

src/tests/url/get_url_fragment.rs

@@ -1,48 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn data_url() {
-        assert_eq!(
-            url::get_url_fragment(
-                "data:image/svg+xml;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h#test"
-            ),
-            "test"
-        );
-    }
-}
-
-//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
-//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
-//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
-//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod failing {
-    use crate::url;
-
-    #[test]
-    fn https_empty() {
-        assert_eq!(url::get_url_fragment("https://kernel.org#"), "");
-    }
-
-    #[test]
-    fn no_fragment() {
-        assert_eq!(url::get_url_fragment("https://kernel.org"), "");
-    }
-
-    #[test]
-    fn dummy_data_url() {
-        assert_eq!(url::get_url_fragment("data:text/html,"), "");
-    }
-}

src/tests/url/is_data_url.rs

@@ -1,52 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn data_url_text_html() {
-        assert!(url::is_data_url(
-            "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h"
-        ));
-    }
-
-    #[test]
-    fn data_url_no_media_type() {
-        assert!(url::is_data_url(
-            "data:;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h"
-        ));
-    }
-}
-
-//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
-//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
-//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
-//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod failing {
-    use crate::url;
-
-    #[test]
-    fn https_url() {
-        assert!(!url::is_data_url("https://kernel.org"));
-    }
-
-    #[test]
-    fn no_protocol_url() {
-        assert!(!url::is_data_url("//kernel.org"));
-    }
-
-    #[test]
-    fn empty_string() {
-        assert!(!url::is_data_url(""));
-    }
-}

src/tests/url/is_file_url.rs

@@ -1,83 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn unix_file_url() {
-        assert!(url::is_file_url(
-            "file:///home/user/Websites/my-website/index.html"
-        ));
-    }
-
-    #[test]
-    fn windows_file_url() {
-        assert!(url::is_file_url(
-            "file:///C:/Documents%20and%20Settings/user/Websites/my-website/assets/images/logo.png"
-        ));
-    }
-
-    #[test]
-    fn unix_url_with_backslashes() {
-        assert!(url::is_file_url(
-            "file:\\\\\\home\\user\\Websites\\my-website\\index.html"
-        ));
-    }
-
-    #[test]
-    fn windows_file_url_with_backslashes() {
-        assert!(url::is_file_url(
-            "file:\\\\\\C:\\Documents%20and%20Settings\\user\\Websites\\my-website\\assets\\images\\logo.png"
-        ));
-    }
-}
-
-//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
-//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
-//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
-//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod failing {
-    use crate::url;
-
-    #[test]
-    fn url_with_no_protocl() {
-        assert!(!url::is_file_url("//kernel.org"));
-    }
-
-    #[test]
-    fn dot_slash_filename() {
-        assert!(!url::is_file_url("./index.html"));
-    }
-
-    #[test]
-    fn just_filename() {
-        assert!(!url::is_file_url("some-local-page.htm"));
-    }
-
-    #[test]
-    fn https_ip_port_url() {
-        assert!(!url::is_file_url("https://1.2.3.4:80/www/index.html"));
-    }
-
-    #[test]
-    fn data_url() {
-        assert!(!url::is_file_url(
-            "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h"
-        ));
-    }
-
-    #[test]
-    fn just_word_file() {
-        assert!(!url::is_file_url("file"));
-    }
-}

src/tests/url/is_http_url.rs

@@ -1,65 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn http_url() {
-        assert!(url::is_http_url("http://kernel.org"));
-    }
-
-    #[test]
-    fn https_url() {
-        assert!(url::is_http_url("https://www.rust-lang.org/"));
-    }
-
-    #[test]
-    fn http_url_with_backslashes() {
-        assert!(url::is_http_url("http:\\\\freebsd.org\\"));
-    }
-}
-
-//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
-//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
-//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
-//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod failing {
-    use crate::url;
-
-    #[test]
-    fn url_with_no_protocol() {
-        assert!(!url::is_http_url("//kernel.org"));
-    }
-
-    #[test]
-    fn dot_slash_filename() {
-        assert!(!url::is_http_url("./index.html"));
-    }
-
-    #[test]
-    fn just_filename() {
-        assert!(!url::is_http_url("some-local-page.htm"));
-    }
-
-    #[test]
-    fn https_ip_port_url() {
-        assert!(!url::is_http_url("ftp://1.2.3.4/www/index.html"));
-    }
-
-    #[test]
-    fn data_url() {
-        assert!(!url::is_http_url(
-            "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h"
-        ));
-    }
-}

src/tests/url/mod.rs

@@ -1,12 +0,0 @@
-mod clean_url;
-mod data_to_data_url;
-mod decode_url;
-mod file_url_to_fs_path;
-mod get_url_fragment;
-mod is_data_url;
-mod is_file_url;
-mod is_http_url;
-mod parse_data_url;
-mod resolve_url;
-mod url_has_protocol;
-mod url_with_fragment;

src/tests/url/url_with_fragment.rs

@@ -1,40 +0,0 @@
-//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
-//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
-//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
-//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod passing {
-    use crate::url;
-
-    #[test]
-    fn url_with_fragment_url() {
-        let url = "https://localhost.localdomain/path/";
-        let fragment = "test";
-        let assembled_url = url::url_with_fragment(url, fragment);
-
-        assert_eq!(&assembled_url, "https://localhost.localdomain/path/#test");
-    }
-    #[test]
-    fn url_with_fragment_empty_url() {
-        let url = "https://localhost.localdomain/path/";
-        let fragment = "";
-        let assembled_url = url::url_with_fragment(url, fragment);
-
-        assert_eq!(&assembled_url, "https://localhost.localdomain/path/");
-    }
-
-    #[test]
-    fn url_with_fragment_data_url() {
-        let url = "data:image/svg+xml;base64,PHN2Zz48L3N2Zz4K";
-        let fragment = "fragment";
-        let assembled_url = url::url_with_fragment(url, fragment);
-
-        assert_eq!(
-            &assembled_url,
-            "data:image/svg+xml;base64,PHN2Zz48L3N2Zz4K#fragment"
-        );
-    }
-}

src/url.rs

@@ -1,167 +1,82 @@
 use base64;
-use url::{form_urlencoded, ParseError, Url};
+use percent_encoding::percent_decode_str;
+use url::Url;
 
-use crate::utils::detect_media_type;
+use crate::utils::{detect_media_type, parse_content_type};
 
-pub fn clean_url<T: AsRef<str>>(input: T) -> String {
-    let mut url = Url::parse(input.as_ref()).unwrap();
+pub const EMPTY_IMAGE_DATA_URL: &'static str = "data:image/png;base64,\
+iVBORw0KGgoAAAANSUhEUgAAAA0AAAANCAQAAADY4iz3AAAAEUlEQVR42mNkwAkYR6UolgIACvgADsuK6xYAAAAASUVORK5CYII=";
 
-    // Clear fragment
+pub fn clean_url(url: Url) -> Url {
+    let mut url = url.clone();
+
+    // Clear fragment (if any)
     url.set_fragment(None);
 
-    // Get rid of stray question mark
-    if url.query() == Some("") {
-        url.set_query(None);
-    }
-
-    // Remove empty trailing ampersand(s)
-    let mut result: String = url.to_string();
-    while result.ends_with("&") {
-        result.pop();
-    }
-
-    result
+    url
 }
 
-pub fn data_to_data_url(media_type: &str, data: &[u8], url: &str) -> String {
+pub fn create_data_url(media_type: &str, charset: &str, data: &[u8], final_asset_url: &Url) -> Url {
+    // TODO: move this block out of this function
     let media_type: String = if media_type.is_empty() {
-        detect_media_type(data, &url)
+        detect_media_type(data, &final_asset_url)
     } else {
         media_type.to_string()
     };
 
-    format!("data:{};base64,{}", media_type, base64::encode(data))
-}
+    let mut data_url: Url = Url::parse("data:,").unwrap();
 
-pub fn decode_url(input: String) -> String {
-    let input: String = input.replace("+", "%2B");
-
-    form_urlencoded::parse(input.as_bytes())
-        .map(|(key, val)| {
-            [
-                key.to_string(),
-                if val.to_string().len() == 0 {
-                    str!()
+    let c: String =
+        if !charset.trim().is_empty() && !charset.trim().eq_ignore_ascii_case("US-ASCII") {
+            format!(";charset={}", charset.trim())
         } else {
-                    str!('=')
-                },
-                val.to_string(),
-            ]
-            .concat()
-        })
-        .collect()
+            "".to_string()
+        };
+
+    data_url.set_path(format!("{}{};base64,{}", media_type, c, base64::encode(data)).as_str());
+
+    data_url
 }
 
-pub fn file_url_to_fs_path(url: &str) -> String {
-    if !is_file_url(url) {
-        return str!();
+pub fn is_url_and_has_protocol(input: &str) -> bool {
+    match Url::parse(&input) {
+        Ok(parsed_url) => {
+            return parsed_url.scheme().len() > 0;
         }
-
-    let cutoff_l = if cfg!(windows) { 8 } else { 7 };
-    let mut fs_file_path: String = decode_url(url.to_string()[cutoff_l..].to_string());
-    let url_fragment = get_url_fragment(url);
-    if url_fragment != "" {
-        let max_len = fs_file_path.len() - 1 - url_fragment.len();
-        fs_file_path = fs_file_path[0..max_len].to_string();
+        Err(_) => {
+            return false;
         }
-
-    if cfg!(windows) {
-        fs_file_path = fs_file_path.replace("/", "\\");
-    }
-
-    // File paths should not be %-encoded
-    decode_url(fs_file_path)
-}
-
-pub fn get_url_fragment<T: AsRef<str>>(url: T) -> String {
-    match Url::parse(url.as_ref()) {
-        Ok(parsed_url) => parsed_url.fragment().unwrap_or("").to_string(),
-        Err(_err) => str!(),
     }
 }
 
-pub fn is_data_url<T: AsRef<str>>(url: T) -> bool {
-    Url::parse(url.as_ref())
-        .and_then(|u| Ok(u.scheme() == "data"))
-        .unwrap_or(false)
-}
-
-pub fn is_file_url<T: AsRef<str>>(url: T) -> bool {
-    Url::parse(url.as_ref())
-        .and_then(|u| Ok(u.scheme() == "file"))
-        .unwrap_or(false)
-}
-
-pub fn is_http_url<T: AsRef<str>>(url: T) -> bool {
-    Url::parse(url.as_ref())
-        .and_then(|u| Ok(u.scheme() == "http" || u.scheme() == "https"))
-        .unwrap_or(false)
-}
-
-pub fn parse_data_url<T: AsRef<str>>(url: T) -> (String, Vec<u8>) {
-    let parsed_url: Url = Url::parse(url.as_ref()).unwrap_or(Url::parse("data:,").unwrap());
-    let path: String = parsed_url.path().to_string();
+pub fn parse_data_url(url: &Url) -> (String, String, Vec<u8>) {
+    let path: String = url.path().to_string();
     let comma_loc: usize = path.find(',').unwrap_or(path.len());
 
-    let meta_data: String = path.chars().take(comma_loc).collect();
-    let raw_data: String = path.chars().skip(comma_loc + 1).collect();
+    // Split data URL into meta data and raw data
+    let content_type: String = path.chars().take(comma_loc).collect();
+    let data: String = path.chars().skip(comma_loc + 1).collect();
 
-    let text: String = decode_url(raw_data);
+    // Parse meta data
+    let (media_type, charset, is_base64) = parse_content_type(&content_type);
 
-    let meta_data_items: Vec<&str> = meta_data.split(';').collect();
-    let mut media_type: String = str!();
-    let mut encoding: &str = "";
-
-    let mut i: i8 = 0;
-    for item in &meta_data_items {
-        if i == 0 {
-            media_type = str!(item);
-        } else {
-            if item.eq_ignore_ascii_case("base64")
-                || item.eq_ignore_ascii_case("utf8")
-                || item.eq_ignore_ascii_case("charset=UTF-8")
-            {
-                encoding = item;
-            }
-        }
-
-        i = i + 1;
-    }
-
-    let data: Vec<u8> = if encoding.eq_ignore_ascii_case("base64") {
+    // Parse raw data into vector of bytes
+    let text: String = percent_decode_str(&data).decode_utf8_lossy().to_string();
+    let blob: Vec<u8> = if is_base64 {
         base64::decode(&text).unwrap_or(vec![])
     } else {
         text.as_bytes().to_vec()
     };
 
-    (media_type, data)
+    (media_type, charset, blob)
 }
 
-pub fn resolve_url<T: AsRef<str>, U: AsRef<str>>(from: T, to: U) -> Result<String, ParseError> {
-    let result = if is_http_url(to.as_ref()) {
-        to.as_ref().to_string()
-    } else {
-        Url::parse(from.as_ref())?
-            .join(to.as_ref())?
-            .as_ref()
-            .to_string()
-    };
-    Ok(result)
-}
-
-pub fn url_has_protocol<T: AsRef<str>>(url: T) -> bool {
-    Url::parse(url.as_ref())
-        .and_then(|u| Ok(u.scheme().len() > 0))
-        .unwrap_or(false)
-}
-
-pub fn url_with_fragment(url: &str, fragment: &str) -> String {
-    let mut result = str!(&url);
-
-    if !fragment.is_empty() {
-        result += "#";
-        result += fragment;
+pub fn resolve_url(from: &Url, to: &str) -> Url {
+    match Url::parse(&to) {
+        Ok(parsed_url) => parsed_url,
+        Err(_) => match from.join(to) {
+            Ok(joined) => joined,
+            Err(_) => Url::parse("data:,").unwrap(),
+        },
     }
-
-    result
 }

src/utils.rs

@@ -2,13 +2,14 @@ use reqwest::blocking::Client;
 use reqwest::header::CONTENT_TYPE;
 use std::collections::HashMap;
 use std::fs;
-use std::path::Path;
+use std::path::{Path, PathBuf};
+use url::Url;
 
 use crate::opts::Options;
-use crate::url::{clean_url, file_url_to_fs_path, is_data_url, is_file_url, parse_data_url};
-
-const INDENT: &str = " ";
+use crate::url::{clean_url, parse_data_url};
 
+const ANSI_COLOR_RED: &'static str = "\x1b[31m";
+const ANSI_COLOR_RESET: &'static str = "\x1b[0m";
 const MAGIC: [[&[u8]; 2]; 18] = [
     // Image
     [b"GIF87a", b"image/gif"],
@@ -32,81 +33,251 @@ const MAGIC: [[&[u8]; 2]; 18] = [
     [b"....moov", b"video/quicktime"],
     [b"\x1A\x45\xDF\xA3", b"video/webm"],
 ];
-
 const PLAINTEXT_MEDIA_TYPES: &[&str] = &[
+    "application/javascript",
+    "application/json",
     "image/svg+xml",
-    "text/css",
-    "text/html",
-    "text/javascript",
-    "text/plain",
 ];
 
-pub fn detect_media_type(data: &[u8], url: &str) -> String {
-    for item in MAGIC.iter() {
-        if data.starts_with(item[0]) {
-            return String::from_utf8(item[1].to_vec()).unwrap();
+pub fn detect_media_type(data: &[u8], url: &Url) -> String {
+    // At first attempt to read file's header
+    for magic_item in MAGIC.iter() {
+        if data.starts_with(magic_item[0]) {
+            return String::from_utf8(magic_item[1].to_vec()).unwrap();
         }
     }
 
-    if url.to_lowercase().ends_with(".svg") {
-        return str!("image/svg+xml");
-    }
-
-    str!()
+    // If header didn't match any known magic signatures,
+    // try to guess media type from file name
+    let parts: Vec<&str> = url.path().split('/').collect();
+    detect_media_type_by_file_name(parts.last().unwrap())
 }
 
-pub fn is_plaintext_media_type(media_type: &str) -> bool {
-    PLAINTEXT_MEDIA_TYPES.contains(&media_type.to_lowercase().as_str())
+pub fn detect_media_type_by_file_name(filename: &str) -> String {
+    let filename_lowercased: &str = &filename.to_lowercase();
+    let parts: Vec<&str> = filename_lowercased.split('.').collect();
+
+    let mime: &str = match parts.last() {
+        Some(v) => match *v {
+            "avi" => "video/avi",
+            "bmp" => "image/bmp",
+            "css" => "text/css",
+            "flac" => "audio/flac",
+            "gif" => "image/gif",
+            "htm" | "html" => "text/html",
+            "ico" => "image/x-icon",
+            "jpeg" | "jpg" => "image/jpeg",
+            "js" => "application/javascript",
+            "json" => "application/json",
+            "mp3" => "audio/mpeg",
+            "mp4" | "m4v" => "video/mp4",
+            "ogg" => "audio/ogg",
+            "ogv" => "video/ogg",
+            "pdf" => "application/pdf",
+            "png" => "image/png",
+            "svg" => "image/svg+xml",
+            "swf" => "application/x-shockwave-flash",
+            "tif" | "tiff" => "image/tiff",
+            "txt" => "text/plain",
+            "wav" => "audio/wav",
+            "webp" => "image/webp",
+            "woff" => "font/woff",
+            "woff2" => "font/woff2",
+            "xml" => "text/xml",
+            &_ => "",
+        },
+        None => "",
+    };
+
+    mime.to_string()
+}
+
+pub fn domain_is_within_domain(domain: &str, domain_to_match_against: &str) -> bool {
+    if domain_to_match_against.len() == 0 {
+        return false;
+    }
+
+    if domain_to_match_against == "." {
+        return true;
+    }
+
+    let domain_partials: Vec<&str> = domain.trim_end_matches(".").rsplit(".").collect();
+    let domain_to_match_against_partials: Vec<&str> = domain_to_match_against
+        .trim_end_matches(".")
+        .rsplit(".")
+        .collect();
+    let domain_to_match_against_starts_with_a_dot = domain_to_match_against.starts_with(".");
+
+    let mut i: usize = 0;
+    let l: usize = std::cmp::max(
+        domain_partials.len(),
+        domain_to_match_against_partials.len(),
+    );
+    let mut ok: bool = true;
+
+    while i < l {
+        // Exit and return false if went out of bounds of domain to match against, and it didn't start with a dot
+        if !domain_to_match_against_starts_with_a_dot
+            && domain_to_match_against_partials.len() < i + 1
+        {
+            ok = false;
+            break;
+        }
+
+        let domain_partial = if domain_partials.len() < i + 1 {
+            ""
+        } else {
+            domain_partials.get(i).unwrap()
+        };
+        let domain_to_match_against_partial = if domain_to_match_against_partials.len() < i + 1 {
+            ""
+        } else {
+            domain_to_match_against_partials.get(i).unwrap()
+        };
+
+        let parts_match = domain_to_match_against_partial.eq_ignore_ascii_case(domain_partial);
+
+        if !parts_match && domain_to_match_against_partial.len() != 0 {
+            ok = false;
+            break;
+        }
+
+        i += 1;
+    }
+
+    ok
 }
 
 pub fn indent(level: u32) -> String {
-    let mut result = str!();
+    let mut result: String = String::new();
     let mut l: u32 = level;
+
     while l > 0 {
-        result += INDENT;
+        result += " ";
         l -= 1;
     }
+
     result
 }
 
+pub fn is_plaintext_media_type(media_type: &str) -> bool {
+    media_type.to_lowercase().as_str().starts_with("text/")
+        || PLAINTEXT_MEDIA_TYPES.contains(&media_type.to_lowercase().as_str())
+}
+
+pub fn parse_content_type(content_type: &str) -> (String, String, bool) {
+    let mut media_type: String = "text/plain".to_string();
+    let mut charset: String = "US-ASCII".to_string();
+    let mut is_base64: bool = false;
+
+    // Parse meta data
+    let content_type_items: Vec<&str> = content_type.split(';').collect();
+    let mut i: i8 = 0;
+    for item in &content_type_items {
+        if i == 0 {
+            if item.trim().len() > 0 {
+                media_type = item.trim().to_string();
+            }
+        } else {
+            if item.trim().eq_ignore_ascii_case("base64") {
+                is_base64 = true;
+            } else if item.trim().starts_with("charset=") {
+                charset = item.trim().chars().skip(8).collect();
+            }
+        }
+
+        i += 1;
+    }
+
+    (media_type, charset, is_base64)
+}
+
 pub fn retrieve_asset(
     cache: &mut HashMap<String, Vec<u8>>,
     client: &Client,
-    parent_url: &str,
-    url: &str,
+    parent_url: &Url,
+    url: &Url,
     options: &Options,
     depth: u32,
-) -> Result<(Vec<u8>, String, String), reqwest::Error> {
-    if url.len() == 0 {
+) -> Result<(Vec<u8>, Url, String, String), reqwest::Error> {
+    if url.scheme() == "data" {
+        let (media_type, charset, data) = parse_data_url(url);
+        Ok((data, url.clone(), media_type, charset))
+    } else if url.scheme() == "file" {
+        // Check if parent_url is also a file: URL (if not, then we don't embed the asset)
+        if parent_url.scheme() != "file" {
+            if !options.silent {
+                eprintln!(
+                    "{}{}{} ({}){}",
+                    indent(depth).as_str(),
+                    if options.no_color { "" } else { ANSI_COLOR_RED },
+                    &url,
+                    "Security Error",
+                    if options.no_color {
+                        ""
+                    } else {
+                        ANSI_COLOR_RESET
+                    },
+                );
+            }
             // Provoke error
             client.get("").send()?;
         }
 
-    if is_data_url(&url) {
-        let (media_type, data) = parse_data_url(url);
-        Ok((data, url.to_string(), media_type))
-    } else if is_file_url(&url) {
-        // Check if parent_url is also file:///
-        // (if not, then we don't embed the asset)
-        if !is_file_url(&parent_url) {
-            // Provoke error
-            client.get("").send()?;
-        }
-
-        let fs_file_path: String = file_url_to_fs_path(url);
-        let path = Path::new(&fs_file_path);
+        let path_buf: PathBuf = url.to_file_path().unwrap().clone();
+        let path: &Path = path_buf.as_path();
         if path.exists() {
+            if path.is_dir() {
+                if !options.silent {
+                    eprintln!(
+                        "{}{}{} (is a directory){}",
+                        indent(depth).as_str(),
+                        if options.no_color { "" } else { ANSI_COLOR_RED },
+                        &url,
+                        if options.no_color {
+                            ""
+                        } else {
+                            ANSI_COLOR_RESET
+                        },
+                    );
+                }
+
+                // Provoke error
+                Err(client.get("").send().unwrap_err())
+            } else {
                 if !options.silent {
                     eprintln!("{}{}", indent(depth).as_str(), &url);
                 }
 
-            Ok((fs::read(&fs_file_path).expect(""), url.to_string(), str!()))
+                let file_blob: Vec<u8> = fs::read(&path).expect("Unable to read file");
+
+                Ok((
+                    file_blob.clone(),
+                    url.clone(),
+                    detect_media_type(&file_blob, url),
+                    "".to_string(),
+                ))
+            }
         } else {
+            if !options.silent {
+                eprintln!(
+                    "{}{}{} (not found){}",
+                    indent(depth).as_str(),
+                    if options.no_color { "" } else { ANSI_COLOR_RED },
+                    &url,
+                    if options.no_color {
+                        ""
+                    } else {
+                        ANSI_COLOR_RESET
+                    },
+                );
+            }
+
             // Provoke error
             Err(client.get("").send().unwrap_err())
         }
     } else {
-        let cache_key: String = clean_url(&url);
+        let cache_key: String = clean_url(url.clone()).as_str().to_string();
 
         if cache.contains_key(&cache_key) {
             // URL is in cache, we get and return it
@@ -116,50 +287,112 @@ pub fn retrieve_asset(
 
             Ok((
                 cache.get(&cache_key).unwrap().to_vec(),
-                url.to_string(),
-                str!(),
+                url.clone(),
+                "".to_string(),
+                "".to_string(),
             ))
         } else {
+            if let Some(domains) = &options.domains {
+                let domain_matches = domains
+                    .iter()
+                    .any(|d| domain_is_within_domain(url.host_str().unwrap(), &d.trim()));
+                if (options.exclude_domains && domain_matches)
+                    || (!options.exclude_domains && !domain_matches)
+                {
+                    return Err(client.get("").send().unwrap_err());
+                }
+            }
+
             // URL not in cache, we retrieve the file
-            match client.get(url).send() {
-                Ok(mut response) => {
-                    if !options.ignore_errors && response.status() != 200 {
+            match client.get(url.as_str()).send() {
+                Ok(response) => {
+                    if !options.ignore_errors && response.status() != reqwest::StatusCode::OK {
                         if !options.silent {
-                            eprintln!("Unable to retrieve {} ({})", &url, response.status());
+                            eprintln!(
+                                "{}{}{} ({}){}",
+                                indent(depth).as_str(),
+                                if options.no_color { "" } else { ANSI_COLOR_RED },
+                                &url,
+                                response.status(),
+                                if options.no_color {
+                                    ""
+                                } else {
+                                    ANSI_COLOR_RESET
+                                },
+                            );
                         }
                         // Provoke error
                         return Err(client.get("").send().unwrap_err());
                     }
 
-                    let res_url = response.url().to_string();
+                    let response_url: Url = response.url().clone();
 
                     if !options.silent {
-                        if url == res_url {
+                        if url.as_str() == response_url.as_str() {
                             eprintln!("{}{}", indent(depth).as_str(), &url);
                         } else {
-                            eprintln!("{}{} -> {}", indent(depth).as_str(), &url, &res_url);
+                            eprintln!("{}{} -> {}", indent(depth).as_str(), &url, &response_url);
                         }
                     }
 
-                    let new_cache_key: String = clean_url(&res_url);
+                    let new_cache_key: String = clean_url(response_url.clone()).to_string();
 
-                    // Convert response into a byte array
-                    let mut data: Vec<u8> = vec![];
-                    response.copy_to(&mut data)?;
-
-                    // Attempt to obtain media type by reading the Content-Type header
-                    let media_type = response
+                    // Attempt to obtain media type and charset by reading Content-Type header
+                    let content_type: &str = response
                         .headers()
                         .get(CONTENT_TYPE)
                         .and_then(|header| header.to_str().ok())
                         .unwrap_or("");
 
+                    let (media_type, charset, _is_base64) = parse_content_type(&content_type);
+
+                    // Convert response into a byte array
+                    let mut data: Vec<u8> = vec![];
+                    match response.bytes() {
+                        Ok(b) => {
+                            data = b.to_vec();
+                        }
+                        Err(error) => {
+                            if !options.silent {
+                                eprintln!(
+                                    "{}{}{}{}",
+                                    indent(depth).as_str(),
+                                    if options.no_color { "" } else { ANSI_COLOR_RED },
+                                    error,
+                                    if options.no_color {
+                                        ""
+                                    } else {
+                                        ANSI_COLOR_RESET
+                                    },
+                                );
+                            }
+                        }
+                    }
+
                     // Add retrieved resource to cache
                     cache.insert(new_cache_key, data.clone());
 
-                    Ok((data, res_url, media_type.to_string()))
+                    // Return
+                    Ok((data, response_url, media_type, charset))
+                }
+                Err(error) => {
+                    if !options.silent {
+                        eprintln!(
+                            "{}{}{} ({}){}",
+                            indent(depth).as_str(),
+                            if options.no_color { "" } else { ANSI_COLOR_RED },
+                            &url,
+                            error,
+                            if options.no_color {
+                                ""
+                            } else {
+                                ANSI_COLOR_RESET
+                            },
+                        );
+                    }
+
+                    Err(client.get("").send().unwrap_err())
                 }
-                Err(error) => Err(error),
             }
         }
     }

tests/_data_/css/index.html

@@ -0,0 +1,11 @@
+<style>
+
+    @charset 'UTF-8';
+
+    @import 'style.css';
+
+    @import url(style.css);
+
+    @import url('style.css');
+
+</style>

tests/_data_/css/style.css

@@ -0,0 +1 @@
+body{background-color:#000;color:#fff}

tests/_data_/integrity/index.html

@@ -3,8 +3,6 @@
 <html lang="en">
 
 <head>
-  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-  <meta http-equiv="Content-Security-Policy" content="default-src 'unsafe-inline' file:;" />
   <title>Local HTML file</title>
   <link href="style.css" rel="stylesheet" type="text/css" integrity="sha512-IWaCTORHkRhOWzcZeILSVmV6V6gPTHgNem6o6rsFAyaKTieDFkeeMrWjtO0DuWrX3bqZY46CVTZXUu0mia0qXQ==" crossorigin="anonymous" />
   <link href="style.css" rel="stylesheet" type="text/css" integrity="sha512-vWBzl4NE9oIg8NFOPAyOZbaam0UXWr6aDHPaY2kodSzAFl+mKoj/RMNc6C31NDqK4mE2i68IWxYWqWJPLCgPOw==" crossorigin="anonymous" />

tests/_data_/noscript/image.svg

@@ -0,0 +1,5 @@
+<svg version="1.1" baseProfile="full" width="300" height="200" xmlns="http://www.w3.org/2000/svg">
+    <rect width="100%" height="100%" fill="red" />
+    <circle cx="150" cy="100" r="80" fill="green" />
+    <text x="150" y="125" font-size="60" text-anchor="middle" fill="white">SVG</text>
+</svg>

tests/_data_/noscript/index.html

@@ -0,0 +1 @@
+<body><noscript><img src="image.svg" /></noscript></body>

tests/_data_/noscript/nested.html

@@ -0,0 +1 @@
+<body><noscript><h1>JS is not active</h1><noscript><img src="image.svg" /></noscript></noscript></body>

tests/_data_/noscript/script.html

@@ -0,0 +1 @@
+<body><noscript><script>alert(1);</script><img src="image.svg" /></noscript></body>

tests/_data_/svg/image.svg

@@ -0,0 +1,5 @@
+<svg version="1.1" baseProfile="full" width="300" height="200" xmlns="http://www.w3.org/2000/svg">
+    <rect width="100%" height="100%" fill="red" />
+    <circle cx="150" cy="100" r="80" fill="green" />
+    <text x="150" y="125" font-size="60" text-anchor="middle" fill="white">SVG</text>
+</svg>

tests/_data_/svg/index.html

@@ -0,0 +1 @@
+<div style="background-image: url('image.svg')"></div>

tests/_data_/unusual_encodings/gb2312.html

@@ -0,0 +1,9 @@
+<html>
+<head>
+    <meta http-equiv="content-type" content="text/html;charset=GB2312"/>
+    <title>近七成人减少线下需求　银行数字化转型提速--经济·科技--人民网 </title>
+</head>
+<body>
+    <h1>近七成人减少线下需求　银行数字化转型提速</h1>
+</body>
+</html>

tests/_data_/unusual_encodings/iso-8859-1.html

@@ -0,0 +1,8 @@
+<html>
+    <head>
+        <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+    </head>
+    <body>
+        &copy; Some Company
+    </body>
+</html>

tests/cli/base_url.rs

@@ -12,8 +12,8 @@ mod passing {
     use std::process::Command;
 
     #[test]
-    fn add_new_when_provided() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+    fn add_new_when_provided() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
         let out = cmd
             .arg("-M")
             .arg("-b")
@@ -22,52 +22,48 @@ mod passing {
             .output()
             .unwrap();
 
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
         // STDOUT should contain newly added base URL
         assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
+            String::from_utf8_lossy(&out.stdout),
             "<html><head>\
             <base href=\"http://localhost:8000/\"></base>\
             </head><body>Hello, World!</body></html>\n"
         );
 
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
+        // Exit code should be 0
         out.assert().code(0);
-
-        Ok(())
     }
 
     #[test]
-    fn keep_existing_when_none_provided() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+    fn keep_existing_when_none_provided() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
         let out = cmd
             .arg("-M")
             .arg("data:text/html,<base href=\"http://localhost:8000/\" />Hello%2C%20World!")
             .output()
             .unwrap();
 
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
         // STDOUT should contain newly added base URL
         assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
+            String::from_utf8_lossy(&out.stdout),
             "<html><head>\
             <base href=\"http://localhost:8000/\">\
             </head><body>Hello, World!</body></html>\n"
         );
 
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
+        // Exit code should be 0
         out.assert().code(0);
-
-        Ok(())
     }
 
     #[test]
-    fn override_existing_when_provided() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+    fn override_existing_when_provided() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
         let out = cmd
             .arg("-M")
             .arg("-b")
@@ -76,26 +72,24 @@ mod passing {
             .output()
             .unwrap();
 
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
         // STDOUT should contain newly added base URL
         assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
+            String::from_utf8_lossy(&out.stdout),
             "<html><head>\
             <base href=\"http://localhost/\">\
             </head><body>Hello, World!</body></html>\n"
         );
 
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
+        // Exit code should be 0
         out.assert().code(0);
-
-        Ok(())
     }
 
     #[test]
-    fn remove_existing_when_empty_provided() -> Result<(), Box<dyn std::error::Error>> {
-        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+    fn set_existing_to_empty_when_empty_provided() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
         let out = cmd
             .arg("-M")
             .arg("-b")
@@ -104,20 +98,18 @@ mod passing {
             .output()
             .unwrap();
 
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
         // STDOUT should contain newly added base URL
         assert_eq!(
-            std::str::from_utf8(&out.stdout).unwrap(),
+            String::from_utf8_lossy(&out.stdout),
             "<html><head>\
             <base href=\"\">\
             </head><body>Hello, World!</body></html>\n"
         );
 
-        // STDERR should be empty
-        assert_eq!(std::str::from_utf8(&out.stderr).unwrap(), "");
-
-        // The exit code should be 0
+        // Exit code should be 0
         out.assert().code(0);
-
-        Ok(())
     }
 }

tests/cli/basic.rs

@@ -0,0 +1,144 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::fs;
+    use std::path::Path;
+    use std::process::{Command, Stdio};
+    use url::Url;
+
+    #[test]
+    fn print_help_information() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd.arg("-h").output().unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain program name, version, and usage information
+        // TODO
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn print_version() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd.arg("-V").output().unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain program name and version
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            format!("{} {}\n", env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"))
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn stdin_target_input() {
+        let mut echo = Command::new("echo")
+            .arg("Hello from STDIN")
+            .stdout(Stdio::piped())
+            .spawn()
+            .unwrap();
+        let echo_out = echo.stdout.take().unwrap();
+        echo.wait().unwrap();
+
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        cmd.stdin(echo_out);
+        let out = cmd.arg("-M").arg("-").output().unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML created out of STDIN
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head></head><body>Hello from STDIN\n</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn css_import_string() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/css/index.html");
+        let path_css: &Path = Path::new("tests/_data_/css/style.css");
+
+        assert!(path_html.is_file());
+        assert!(path_css.is_file());
+
+        let out = cmd.arg("-M").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDERR should list files that got retrieved
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_css}\n \
+                {file_url_css}\n \
+                {file_url_css}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+                file_url_css = Url::from_file_path(fs::canonicalize(&path_css).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain embedded CSS url()'s
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head><style>\n\n    @charset \"UTF-8\";\n\n    @import \"data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\";\n\n    @import url(\"data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\");\n\n    @import url(\"data:text/css;base64,Ym9keXtiYWNrZ3JvdW5kLWNvbG9yOiMwMDA7Y29sb3I6I2ZmZn0K\");\n\n</style>\n</head><body></body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+}
+
+//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
+//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
+//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
+//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod failing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::process::Command;
+
+    #[test]
+    fn bad_input_empty_target() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd.arg("").output().unwrap();
+
+        // STDERR should contain error description
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            "No target specified\n"
+        );
+
+        // STDOUT should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stdout), "");
+
+        // Exit code should be 1
+        out.assert().code(1);
+    }
+}

tests/cli/data_url.rs

@@ -0,0 +1,233 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::process::Command;
+
+    use monolith::url::EMPTY_IMAGE_DATA_URL;
+
+    #[test]
+    fn isolate_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-I")
+            .arg("data:text/html,Hello%2C%20World!")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain isolated HTML
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head>\
+            <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-eval' 'unsafe-inline' data:;\"></meta>\
+            </head><body>Hello, World!</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn remove_css_from_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-c")
+            .arg("data:text/html,<style>body{background-color:pink}</style>Hello")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head>\
+            <meta http-equiv=\"Content-Security-Policy\" content=\"style-src 'none';\"></meta>\
+            <style></style>\
+            </head><body>Hello</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn remove_fonts_from_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-F")
+            .arg("data:text/html,<style>@font-face { font-family: myFont; src: url(font.woff); }</style>Hi")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML with no web fonts
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head>\
+            <meta http-equiv=\"Content-Security-Policy\" content=\"font-src 'none';\"></meta>\
+            <style></style>\
+            </head><body>Hi</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn remove_frames_from_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-f")
+            .arg("data:text/html,<iframe src=\"https://duckduckgo.com\"></iframe>Hi")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML with no iframes
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head>\
+            <meta http-equiv=\"Content-Security-Policy\" content=\"frame-src 'none'; child-src 'none';\"></meta>\
+            </head><body><iframe src=\"\"></iframe>Hi</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn remove_images_from_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-i")
+            .arg("data:text/html,<img src=\"https://google.com\"/>Hi")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML with no images
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            format!(
+                "<html>\
+                <head>\
+                <meta http-equiv=\"Content-Security-Policy\" content=\"img-src data:;\"></meta>\
+                </head>\
+                <body>\
+                <img src=\"{empty_image}\">\
+                Hi\
+                </body>\
+                </html>\n",
+                empty_image = EMPTY_IMAGE_DATA_URL,
+            )
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn remove_js_from_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-j")
+            .arg("data:text/html,<script>alert(2)</script>Hi")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML with no JS
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html>\
+            <head>\
+            <meta http-equiv=\"Content-Security-Policy\" content=\"script-src 'none';\"></meta>\
+            <script></script></head>\
+            <body>Hi</body>\
+            </html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+}
+
+//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
+//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
+//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
+//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod failing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::process::Command;
+
+    #[test]
+    fn bad_input_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd.arg("data:,Hello%2C%20World!").output().unwrap();
+
+        // STDERR should contain error description
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            "Unsupported document media type\n"
+        );
+
+        // STDOUT should contain HTML
+        assert_eq!(String::from_utf8_lossy(&out.stdout), "");
+
+        // Exit code should be 1
+        out.assert().code(1);
+    }
+
+    #[test]
+    fn security_disallow_local_assets_within_data_url_targets() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("data:text/html,%3Cscript%20src=\"src/tests/data/basic/local-script.js\"%3E%3C/script%3E")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML with no JS in it
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head><script src=\"data:application/javascript;base64,\"></script></head><body></body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+}

tests/cli/local_files.rs

@@ -0,0 +1,271 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::fs;
+    use std::path::{Path, MAIN_SEPARATOR};
+    use std::process::Command;
+    use url::Url;
+
+    use monolith::url::EMPTY_IMAGE_DATA_URL;
+
+    #[test]
+    fn local_file_target_input_relative_target_path() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let cwd_normalized: String = env::current_dir()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .replace("\\", "/");
+        let out = cmd
+            .arg("-M")
+            .arg(format!(
+                "tests{s}_data_{s}basic{s}local-file.html",
+                s = MAIN_SEPARATOR
+            ))
+            .output()
+            .unwrap();
+        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
+
+        // STDERR should contain list of retrieved file URLs, two missing
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file}{cwd}/tests/_data_/basic/local-file.html\n \
+                {file}{cwd}/tests/_data_/basic/local-style.css\n \
+                {file}{cwd}/tests/_data_/basic/local-style-does-not-exist.css (not found)\n \
+                {file}{cwd}/tests/_data_/basic/monolith.png (not found)\n \
+                {file}{cwd}/tests/_data_/basic/local-script.js\n\
+                ",
+                file = file_url_protocol,
+                cwd = cwd_normalized
+            )
+        );
+
+        // STDOUT should contain HTML from the local file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "\
+            <!DOCTYPE html><html lang=\"en\"><head>\n  \
+            <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n  \
+            <title>Local HTML file</title>\n  \
+            <link href=\"data:text/css;base64,Ym9keSB7CiAgICBiYWNrZ3JvdW5kLWNvbG9yOiAjMDAwOwogICAgY29sb3I6ICNmZmY7Cn0K\" rel=\"stylesheet\" type=\"text/css\">\n  \
+            <link rel=\"stylesheet\" type=\"text/css\">\n</head>\n\n<body>\n  \
+            <img alt=\"\">\n  \
+            <a href=\"file://local-file.html/\">Tricky href</a>\n  \
+            <a href=\"https://github.com/Y2Z/monolith\">Remote URL</a>\n  \
+            <script src=\"data:application/javascript;base64,ZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPSAiZ3JlZW4iOwpkb2N1bWVudC5ib2R5LnN0eWxlLmNvbG9yID0gInJlZCI7Cg==\"></script>\n\n\n\n\
+            </body></html>\n\
+            "
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn local_file_target_input_absolute_target_path() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/basic/local-file.html");
+
+        let out = cmd
+            .arg("-M")
+            .arg("-Ijci")
+            .arg(path_html.as_os_str())
+            .output()
+            .unwrap();
+
+        // STDERR should contain only the target file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "{file_url_html}\n",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain HTML from the local file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            format!(
+                "\
+                <!DOCTYPE html><html lang=\"en\"><head>\
+                <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-eval' 'unsafe-inline' data:; style-src 'none'; script-src 'none'; img-src data:;\"></meta>\n  \
+                <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n  \
+                <title>Local HTML file</title>\n  \
+                <link rel=\"stylesheet\" type=\"text/css\">\n  \
+                <link rel=\"stylesheet\" type=\"text/css\">\n</head>\n\n<body>\n  \
+                <img src=\"{empty_image}\" alt=\"\">\n  \
+                <a href=\"file://local-file.html/\">Tricky href</a>\n  \
+                <a href=\"https://github.com/Y2Z/monolith\">Remote URL</a>\n  \
+                <script></script>\n\n\n\n\
+                </body></html>\n\
+                ",
+                empty_image = EMPTY_IMAGE_DATA_URL
+            )
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn local_file_url_target_input() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let cwd_normalized: String = env::current_dir()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .replace("\\", "/");
+        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
+        let out = cmd
+            .arg("-M")
+            .arg("-cji")
+            .arg(format!(
+                "{file}{cwd}/tests/_data_/basic/local-file.html",
+                file = file_url_protocol,
+                cwd = cwd_normalized,
+            ))
+            .output()
+            .unwrap();
+
+        // STDERR should contain list of retrieved file URLs
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "{file}{cwd}/tests/_data_/basic/local-file.html\n",
+                file = file_url_protocol,
+                cwd = cwd_normalized,
+            )
+        );
+
+        // STDOUT should contain HTML from the local file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            format!(
+                "\
+                <!DOCTYPE html><html lang=\"en\"><head>\
+                <meta http-equiv=\"Content-Security-Policy\" content=\"style-src 'none'; script-src 'none'; img-src data:;\"></meta>\n  \
+                <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n  \
+                <title>Local HTML file</title>\n  \
+                <link rel=\"stylesheet\" type=\"text/css\">\n  \
+                <link rel=\"stylesheet\" type=\"text/css\">\n</head>\n\n<body>\n  \
+                <img src=\"{empty_image}\" alt=\"\">\n  \
+                <a href=\"file://local-file.html/\">Tricky href</a>\n  \
+                <a href=\"https://github.com/Y2Z/monolith\">Remote URL</a>\n  \
+                <script></script>\n\n\n\n\
+                </body></html>\n\
+                ",
+                empty_image = EMPTY_IMAGE_DATA_URL
+            )
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn embed_file_url_local_asset_within_style_attribute() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/svg/index.html");
+        let path_svg: &Path = Path::new("tests/_data_/svg/image.svg");
+
+        let out = cmd.arg("-M").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDERR should list files that got retrieved
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain HTML with date URL for background-image in it
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head></head><body><div style=\"background-image: url(&quot;data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=&quot;)\"></div>\n</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn discard_integrity_for_local_files() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let cwd_normalized: String = env::current_dir()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .replace("\\", "/");
+        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
+        let out = cmd
+            .arg("-M")
+            .arg("-i")
+            .arg(if cfg!(windows) {
+                format!(
+                    "{file}{cwd}/tests/_data_/integrity/index.html",
+                    file = file_url_protocol,
+                    cwd = cwd_normalized,
+                )
+            } else {
+                format!(
+                    "{file}{cwd}/tests/_data_/integrity/index.html",
+                    file = file_url_protocol,
+                    cwd = cwd_normalized,
+                )
+            })
+            .output()
+            .unwrap();
+
+        // STDERR should contain list of retrieved file URLs
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file}{cwd}/tests/_data_/integrity/index.html\n \
+                {file}{cwd}/tests/_data_/integrity/style.css\n \
+                {file}{cwd}/tests/_data_/integrity/style.css\n \
+                {file}{cwd}/tests/_data_/integrity/script.js\n \
+                {file}{cwd}/tests/_data_/integrity/script.js\n\
+                ",
+                file = file_url_protocol,
+                cwd = cwd_normalized,
+            )
+        );
+
+        // STDOUT should contain HTML from the local file; integrity attributes should be missing
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            format!(
+                "\
+                <!DOCTYPE html><html lang=\"en\"><head>\
+                <meta http-equiv=\"Content-Security-Policy\" content=\"img-src data:;\"></meta>\n  \
+                <title>Local HTML file</title>\n  \
+                <link href=\"data:text/css;base64,Ym9keSB7CiAgICBiYWNrZ3JvdW5kLWNvbG9yOiAjMDAwOwogICAgY29sb3I6ICNGRkY7Cn0K\" rel=\"stylesheet\" type=\"text/css\" crossorigin=\"anonymous\">\n  \
+                <link href=\"style.css\" rel=\"stylesheet\" type=\"text/css\" crossorigin=\"anonymous\">\n</head>\n\n<body>\n  \
+                <p>This page should have black background and white foreground, but only when served via http: (not via file:)</p>\n  \
+                <script src=\"data:application/javascript;base64,ZnVuY3Rpb24gbm9vcCgpIHsKICAgIGNvbnNvbGUubG9nKCJtb25vbGl0aCIpOwp9Cg==\"></script>\n  \
+                <script src=\"script.js\"></script>\n\n\n\n\
+                </body></html>\n\
+                "
+            )
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+}

tests/cli/mod.rs

@@ -0,0 +1,6 @@
+mod base_url;
+mod basic;
+mod data_url;
+mod local_files;
+mod noscript;
+mod unusual_encodings;

tests/cli/noscript.rs

@@ -0,0 +1,170 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::fs;
+    use std::path::Path;
+    use std::process::Command;
+    use url::Url;
+
+    #[test]
+    fn parse_noscript_contents() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/noscript/index.html");
+        let path_svg: &Path = Path::new("tests/_data_/noscript/image.svg");
+
+        let out = cmd.arg("-M").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head></head><body><noscript><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"></noscript>\n</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn unwrap_noscript_contents() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/noscript/index.html");
+        let path_svg: &Path = Path::new("tests/_data_/noscript/image.svg");
+
+        let out = cmd.arg("-Mn").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head></head><body><!--noscript--><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"><!--/noscript-->\n</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn unwrap_noscript_contents_nested() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/noscript/nested.html");
+        let path_svg: &Path = Path::new("tests/_data_/noscript/image.svg");
+
+        let out = cmd.arg("-Mn").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head></head><body><!--noscript--><h1>JS is not active</h1><!--noscript--><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"><!--/noscript--><!--/noscript-->\n</body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn unwrap_noscript_contents_with_script() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let path_html: &Path = Path::new("tests/_data_/noscript/script.html");
+        let path_svg: &Path = Path::new("tests/_data_/noscript/image.svg");
+
+        let out = cmd.arg("-Mn").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap()).unwrap(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap()).unwrap(),
+            )
+        );
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html>\
+                <head></head>\
+                <body>\
+                    <!--noscript-->\
+                    <img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\">\
+                    <!--/noscript-->\n\
+                </body>\
+            </html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn unwrap_noscript_contents_attr_data_url() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-n")
+            .arg("data:text/html,<noscript class=\"\">test</noscript>")
+            .output()
+            .unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain unwrapped contents of NOSCRIPT element
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html><head><!--noscript class=\"\"-->test<!--/noscript--></head><body></body></html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+}

tests/cli/unusual_encodings.rs

@@ -0,0 +1,239 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use assert_cmd::prelude::*;
+    use encoding_rs::Encoding;
+    use std::env;
+    use std::path::MAIN_SEPARATOR;
+    use std::process::{Command, Stdio};
+
+    #[test]
+    fn properly_save_document_with_gb2312() {
+        let cwd = env::current_dir().unwrap();
+        let cwd_normalized: String = cwd.to_str().unwrap().replace("\\", "/");
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg(format!(
+                "tests{s}_data_{s}unusual_encodings{s}gb2312.html",
+                s = MAIN_SEPARATOR
+            ))
+            .output()
+            .unwrap();
+        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
+
+        // STDERR should contain only the target file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "{file}{cwd}/tests/_data_/unusual_encodings/gb2312.html\n",
+                file = file_url_protocol,
+                cwd = cwd_normalized,
+            )
+        );
+
+        // STDOUT should contain original document without any modificatons
+        let s: String;
+        if let Some(encoding) = Encoding::for_label(b"gb2312") {
+            let (string, _, _) = encoding.decode(&out.stdout);
+            s = string.to_string();
+        } else {
+            s = String::from_utf8_lossy(&out.stdout).to_string();
+        }
+        assert_eq!(
+            s,
+            "<html>\
+                <head>\n    \
+                    <meta http-equiv=\"content-type\" content=\"text/html;charset=GB2312\">\n    \
+                    <title>近七成人减少线下需求\u{3000}银行数字化转型提速--经济·科技--人民网 </title>\n\
+                </head>\n\
+                <body>\n    \
+                    <h1>近七成人减少线下需求\u{3000}银行数字化转型提速</h1>\n\n\n\
+                </body>\
+            </html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn properly_save_document_with_gb2312_from_stdin() {
+        let mut echo = Command::new("cat")
+            .arg(format!(
+                "tests{s}_data_{s}unusual_encodings{s}gb2312.html",
+                s = MAIN_SEPARATOR
+            ))
+            .stdout(Stdio::piped())
+            .spawn()
+            .unwrap();
+        let echo_out = echo.stdout.take().unwrap();
+        echo.wait().unwrap();
+
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        cmd.stdin(echo_out);
+        let out = cmd.arg("-M").arg("-").output().unwrap();
+
+        // STDERR should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stderr), "");
+
+        // STDOUT should contain HTML created out of STDIN
+        let s: String;
+        if let Some(encoding) = Encoding::for_label(b"gb2312") {
+            let (string, _, _) = encoding.decode(&out.stdout);
+            s = string.to_string();
+        } else {
+            s = String::from_utf8_lossy(&out.stdout).to_string();
+        }
+        assert_eq!(
+            s,
+            "<html>\
+                <head>\n    \
+                    <meta http-equiv=\"content-type\" content=\"text/html;charset=GB2312\">\n    \
+                    <title>近七成人减少线下需求\u{3000}银行数字化转型提速--经济·科技--人民网 </title>\n\
+                </head>\n\
+                <body>\n    \
+                    <h1>近七成人减少线下需求\u{3000}银行数字化转型提速</h1>\n\n\n\
+                </body>\
+            </html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn properly_save_document_with_gb2312_custom_charset() {
+        let cwd = env::current_dir().unwrap();
+        let cwd_normalized: String = cwd.to_str().unwrap().replace("\\", "/");
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-C")
+            .arg("utf8")
+            .arg(format!(
+                "tests{s}_data_{s}unusual_encodings{s}gb2312.html",
+                s = MAIN_SEPARATOR
+            ))
+            .output()
+            .unwrap();
+        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
+
+        // STDERR should contain only the target file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "{file}{cwd}/tests/_data_/unusual_encodings/gb2312.html\n",
+                file = file_url_protocol,
+                cwd = cwd_normalized,
+            )
+        );
+
+        // STDOUT should contain original document without any modificatons
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout).to_string(),
+            "<html>\
+                <head>\n    \
+                    <meta http-equiv=\"content-type\" content=\"text/html;charset=utf8\">\n    \
+                    <title>近七成人减少线下需求\u{3000}银行数字化转型提速--经济·科技--人民网 </title>\n\
+                </head>\n\
+                <body>\n    \
+                    <h1>近七成人减少线下需求\u{3000}银行数字化转型提速</h1>\n\n\n\
+                </body>\
+            </html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+
+    #[test]
+    fn properly_save_document_with_gb2312_custom_charset_bad() {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg("-C")
+            .arg("utf0")
+            .arg(format!(
+                "tests{s}_data_{s}unusual_encodings{s}gb2312.html",
+                s = MAIN_SEPARATOR
+            ))
+            .output()
+            .unwrap();
+
+        // STDERR should contain error message
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            "Unknown encoding: utf0\n"
+        );
+
+        // STDOUT should be empty
+        assert_eq!(String::from_utf8_lossy(&out.stdout).to_string(), "");
+
+        // Exit code should be 1
+        out.assert().code(1);
+    }
+}
+
+//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
+//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
+//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
+//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod failing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::path::MAIN_SEPARATOR;
+    use std::process::Command;
+
+    #[test]
+    fn change_iso88591_to_utf8_to_properly_display_html_entities() {
+        let cwd = env::current_dir().unwrap();
+        let cwd_normalized: String = cwd.to_str().unwrap().replace("\\", "/");
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+        let out = cmd
+            .arg("-M")
+            .arg(format!(
+                "tests{s}_data_{s}unusual_encodings{s}iso-8859-1.html",
+                s = MAIN_SEPARATOR
+            ))
+            .output()
+            .unwrap();
+        let file_url_protocol: &str = if cfg!(windows) { "file:///" } else { "file://" };
+
+        // STDERR should contain only the target file
+        assert_eq!(
+            String::from_utf8_lossy(&out.stderr),
+            format!(
+                "{file}{cwd}/tests/_data_/unusual_encodings/iso-8859-1.html\n",
+                file = file_url_protocol,
+                cwd = cwd_normalized,
+            )
+        );
+
+        // STDOUT should contain original document but with UTF-8 charset
+        assert_eq!(
+            String::from_utf8_lossy(&out.stdout),
+            "<html>\
+                <head>\n        \
+                    <meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\">\n    \
+                </head>\n    \
+                <body>\n        \
+                    <EFBFBD> Some Company\n    \
+                \n\n</body>\
+            </html>\n"
+        );
+
+        // Exit code should be 0
+        out.assert().code(0);
+    }
+}

tests/css/embed_css.rs

@@ -8,35 +8,35 @@
 #[cfg(test)]
 mod passing {
     use reqwest::blocking::Client;
+    use reqwest::Url;
     use std::collections::HashMap;
 
-    use crate::css;
-    use crate::opts::Options;
+    use monolith::css;
+    use monolith::opts::Options;
+    use monolith::url::EMPTY_IMAGE_DATA_URL;
 
     #[test]
     fn empty_input() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("data:,").unwrap();
         let options = Options::default();
 
-        assert_eq!(css::embed_css(cache, &client, "", "", &options, 0), "");
+        assert_eq!(
+            css::embed_css(cache, &client, &document_url, "", &options, 0),
+            ""
+        );
     }
 
     #[test]
     fn trim_if_empty() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let options = Options::default();
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                "\t     \t   ",
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, "\t     \t   ", &options, 0,),
             ""
         );
     }
@@ -45,6 +45,7 @@ mod passing {
     fn style_exclude_unquoted_images() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.no_images = true;
         options.silent = true;
@@ -58,23 +59,16 @@ mod passing {
             height: calc(100vh - 10pt)";
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                &STYLE,
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, &STYLE, &options, 0,),
             format!(
                 "/* border: none;*/\
-                background-image: url('{empty_image}'); \
-                list-style: url('{empty_image}');\
+                background-image: url(\"{empty_image}\"); \
+                list-style: url(\"{empty_image}\");\
                 width:99.998%; \
                 margin-top: -20px; \
                 line-height: -1; \
                 height: calc(100vh - 10pt)",
-                empty_image = empty_image!()
+                empty_image = EMPTY_IMAGE_DATA_URL
             )
         );
     }
@@ -83,6 +77,7 @@ mod passing {
     fn style_exclude_single_quoted_images() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("data:,").unwrap();
         let mut options = Options::default();
         options.no_images = true;
         options.silent = true;
@@ -96,16 +91,16 @@ mod passing {
             height: calc(100vh - 10pt)";
 
         assert_eq!(
-            css::embed_css(cache, &client, "", &STYLE, &options, 0),
+            css::embed_css(cache, &client, &document_url, &STYLE, &options, 0),
             format!(
                 "/* border: none;*/\
-                background-image: url('{empty_image}'); \
-                list-style: url('{empty_image}');\
+                background-image: url(\"{empty_image}\"); \
+                list-style: url(\"{empty_image}\");\
                 width:99.998%; \
                 margin-top: -20px; \
                 line-height: -1; \
                 height: calc(100vh - 10pt)",
-                empty_image = empty_image!()
+                empty_image = EMPTY_IMAGE_DATA_URL
             )
         );
     }
@@ -114,19 +109,20 @@ mod passing {
     fn style_block() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("file:///").unwrap();
         let mut options = Options::default();
         options.silent = true;
 
         const CSS: &str = "\
             #id.class-name:not(:nth-child(3n+0)) {\n  \
             // border: none;\n  \
-            background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=');\n\
+            background-image: url(\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=\");\n\
             }\n\
             \n\
             html > body {}";
 
         assert_eq!(
-            css::embed_css(cache, &client, "file:///", &CSS, &options, 0),
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0),
             CSS
         );
     }
@@ -135,6 +131,7 @@ mod passing {
     fn attribute_selectors() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.silent = true;
 
@@ -143,38 +140,42 @@ mod passing {
                 /* Attribute exists */
             }
 
-            [data-value='foo'] {
+            [data-value=\"foo\"] {
                 /* Attribute has this exact value */
             }
 
-            [data-value*='foo'] {
+            [data-value*=\"foo\"] {
                 /* Attribute value contains this value somewhere in it */
             }
 
-            [data-value~='foo'] {
+            [data-value~=\"foo\"] {
                 /* Attribute has this value in a space-separated list somewhere */
             }
 
-            [data-value^='foo'] {
+            [data-value^=\"foo\"] {
                 /* Attribute value starts with this */
             }
 
-            [data-value|='foo'] {
+            [data-value|=\"foo\"] {
                 /* Attribute value starts with this in a dash-separated list */
             }
 
-            [data-value$='foo'] {
+            [data-value$=\"foo\"] {
                 /* Attribute value ends with this */
             }
             ";
 
-        assert_eq!(css::embed_css(cache, &client, "", &CSS, &options, 0), CSS);
+        assert_eq!(
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0),
+            CSS
+        );
     }
 
     #[test]
     fn import_string() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.silent = true;
 
@@ -187,20 +188,13 @@ mod passing {
             ";
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                &CSS,
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
             "\
-            @charset 'UTF-8';\n\
+            @charset \"UTF-8\";\n\
             \n\
-            @import 'data:text/css;base64,aHRtbHtiYWNrZ3JvdW5kLWNvbG9yOiMwMDB9';\n\
+            @import \"data:text/css;base64,aHRtbHtiYWNrZ3JvdW5kLWNvbG9yOiMwMDB9\";\n\
             \n\
-            @import url('data:text/css;base64,aHRtbHtjb2xvcjojZmZmfQ==')\n\
+            @import url(\"data:text/css;base64,aHRtbHtjb2xvcjojZmZmfQ==\")\n\
             "
         );
     }
@@ -209,6 +203,7 @@ mod passing {
     fn hash_urls() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.silent = true;
 
@@ -223,14 +218,7 @@ mod passing {
             ";
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                &CSS,
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
             CSS
         );
     }
@@ -239,6 +227,7 @@ mod passing {
     fn transform_percentages_and_degrees() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.silent = true;
 
@@ -251,14 +240,7 @@ mod passing {
             ";
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                &CSS,
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
             CSS
         );
     }
@@ -267,6 +249,7 @@ mod passing {
     fn unusual_indents() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.silent = true;
 
@@ -281,14 +264,7 @@ mod passing {
             ";
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                &CSS,
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
             CSS
         );
     }
@@ -297,6 +273,7 @@ mod passing {
     fn exclude_fonts() {
         let cache = &mut HashMap::new();
         let client = Client::new();
+        let document_url: Url = Url::parse("https://doesntmatter.local/").unwrap();
         let mut options = Options::default();
         options.no_fonts = true;
         options.silent = true;
@@ -320,30 +297,74 @@ mod passing {
                 font-family: 'My Font' Verdana\n\
             }\n\
             ";
-
         const CSS_OUT: &str = " \
             \n\
             \n\
             #identifier {\n    \
-                font-family: 'My Font' Arial\n\
+                font-family: \"My Font\" Arial\n\
             }\n\
             \n \
             \n\
             \n\
             div {\n    \
-                font-family: 'My Font' Verdana\n\
+                font-family: \"My Font\" Verdana\n\
             }\n\
             ";
 
         assert_eq!(
-            css::embed_css(
-                cache,
-                &client,
-                "https://doesntmatter.local/",
-                &CSS,
-                &options,
-                0,
-            ),
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
+            CSS_OUT
+        );
+    }
+
+    #[test]
+    fn content() {
+        let cache = &mut HashMap::new();
+        let client = Client::new();
+        let document_url: Url = Url::parse("data:,").unwrap();
+        let mut options = Options::default();
+        options.silent = true;
+
+        const CSS: &str = "\
+            #language a[href=\"#translations\"]:before {\n\
+                content: url(data:,) \"\\A\";\n\
+                white-space: pre }\n\
+            ";
+        const CSS_OUT: &str = "\
+            #language a[href=\"#translations\"]:before {\n\
+                content: url(\"data:text/plain;base64,\") \"\\a \";\n\
+                white-space: pre }\n\
+            ";
+
+        assert_eq!(
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
+            CSS_OUT
+        );
+    }
+
+    #[test]
+    fn ie_css_hack() {
+        let cache = &mut HashMap::new();
+        let client = Client::new();
+        let document_url: Url = Url::parse("data:,").unwrap();
+        let mut options = Options::default();
+        options.silent = true;
+
+        const CSS: &str = "\
+            div#p>svg>foreignObject>section:not(\\9) {\n\
+                width: 300px;\n\
+                width: 500px\\9;\n\
+            }\n\
+            ";
+        const CSS_OUT: &str = "\
+            div#p>svg>foreignObject>section:not(\\9) {\n\
+                width: 300px;\n\
+                width: 500px\t;\n\
+            }\n\
+            ";
+
+        assert_eq!(
+            css::embed_css(cache, &client, &document_url, &CSS, &options, 0,),
             CSS_OUT
         );
     }

tests/css/is_image_url_prop.rs

@@ -7,7 +7,7 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::css;
+    use monolith::css;
 
     #[test]
     fn backrgound() {
@@ -64,7 +64,7 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::css;
+    use monolith::css;
 
     #[test]
     fn empty() {

tests/css/mod.rs

@@ -1,3 +1,2 @@
 mod embed_css;
-mod enquote;
 mod is_image_url_prop;

tests/html/add_favicon.rs

@@ -9,12 +9,12 @@
 mod passing {
     use html5ever::serialize::{serialize, SerializeOpts};
 
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn basic() {
         let html = "<div>text</div>";
-        let mut dom = html::html_to_dom(&html);
+        let mut dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
 
         dom = html::add_favicon(&dom.document, "I_AM_A_FAVICON_DATA_URL".to_string());
 

tests/html/check_integrity.rs

@@ -7,7 +7,7 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn empty_input_sha256() {
@@ -51,7 +51,7 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn empty_hash() {

tests/html/compose_csp.rs

@@ -7,8 +7,8 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::html;
-    use crate::opts::Options;
+    use monolith::html;
+    use monolith::opts::Options;
 
     #[test]
     fn isolated() {
@@ -16,7 +16,10 @@ mod passing {
         options.isolate = true;
         let csp_content = html::compose_csp(&options);
 
-        assert_eq!(csp_content, "default-src 'unsafe-inline' data:;");
+        assert_eq!(
+            csp_content,
+            "default-src 'unsafe-eval' 'unsafe-inline' data:;"
+        );
     }
 
     #[test]
@@ -75,6 +78,6 @@ mod passing {
         options.no_images = true;
         let csp_content = html::compose_csp(&options);
 
-        assert_eq!(csp_content, "default-src 'unsafe-inline' data:; style-src 'none'; font-src 'none'; frame-src 'none'; child-src 'none'; script-src 'none'; img-src data:;");
+        assert_eq!(csp_content, "default-src 'unsafe-eval' 'unsafe-inline' data:; style-src 'none'; font-src 'none'; frame-src 'none'; child-src 'none'; script-src 'none'; img-src data:;");
     }
 }

tests/html/create_metadata_tag.rs

@@ -8,14 +8,15 @@
 #[cfg(test)]
 mod passing {
     use chrono::prelude::*;
+    use reqwest::Url;
 
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn http_url() {
-        let url = "http://192.168.1.1/";
+        let url: Url = Url::parse("http://192.168.1.1/").unwrap();
         let timestamp = Utc::now().to_rfc3339_opts(SecondsFormat::Secs, true);
-        let metadata_comment: String = html::create_metadata_tag(url);
+        let metadata_comment: String = html::create_metadata_tag(&url);
 
         assert_eq!(
             metadata_comment,
@@ -31,9 +32,9 @@ mod passing {
 
     #[test]
     fn file_url() {
-        let url = "file:///home/monolith/index.html";
+        let url: Url = Url::parse("file:///home/monolith/index.html").unwrap();
         let timestamp = Utc::now().to_rfc3339_opts(SecondsFormat::Secs, true);
-        let metadata_comment: String = html::create_metadata_tag(url);
+        let metadata_comment: String = html::create_metadata_tag(&url);
 
         assert_eq!(
             metadata_comment,
@@ -48,9 +49,9 @@ mod passing {
 
     #[test]
     fn data_url() {
-        let url = "data:text/html,Hello%2C%20World!";
+        let url: Url = Url::parse("data:text/html,Hello%2C%20World!").unwrap();
         let timestamp = Utc::now().to_rfc3339_opts(SecondsFormat::Secs, true);
-        let metadata_comment: String = html::create_metadata_tag(url);
+        let metadata_comment: String = html::create_metadata_tag(&url);
 
         assert_eq!(
             metadata_comment,
@@ -63,20 +64,3 @@ mod passing {
         );
     }
 }
-
-//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
-//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
-//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
-//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
-//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
-//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
-
-#[cfg(test)]
-mod failing {
-    use crate::html;
-
-    #[test]
-    fn empty_string() {
-        assert_eq!(html::create_metadata_tag(""), "");
-    }
-}

tests/html/embed_srcset.rs

@@ -8,24 +8,59 @@
 #[cfg(test)]
 mod passing {
     use reqwest::blocking::Client;
+    use reqwest::Url;
     use std::collections::HashMap;
 
-    use crate::html;
-    use crate::opts::Options;
+    use monolith::html;
+    use monolith::opts::Options;
+    use monolith::url::EMPTY_IMAGE_DATA_URL;
 
     #[test]
-    fn replace_with_empty_images() {
+    fn small_medium_large() {
         let cache = &mut HashMap::new();
         let client = Client::new();
-        let srcset_value = "small.png 1x, large.png 2x";
+        let srcset_value = "small.png 1x, medium.png 1.5x, large.png 2x";
         let mut options = Options::default();
         options.no_images = true;
         options.silent = true;
-        let embedded_css = html::embed_srcset(cache, &client, "", &srcset_value, &options, 0);
+        let embedded_css = html::embed_srcset(
+            cache,
+            &client,
+            &Url::parse("data:,").unwrap(),
+            &srcset_value,
+            &options,
+            0,
+        );
 
         assert_eq!(
             embedded_css,
-            format!("{} 1x, {} 2x", empty_image!(), empty_image!()),
+            format!(
+                "{} 1x, {} 1.5x, {} 2x",
+                EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL,
+            ),
+        );
+    }
+
+    #[test]
+    fn small_medium_only_medium_has_scale() {
+        let cache = &mut HashMap::new();
+        let client = Client::new();
+        let srcset_value = "small.png, medium.png 1.5x";
+        let mut options = Options::default();
+        options.no_images = true;
+        options.silent = true;
+        let embedded_css = html::embed_srcset(
+            cache,
+            &client,
+            &Url::parse("data:,").unwrap(),
+            &srcset_value,
+            &options,
+            0,
+        );
+
+        assert_eq!(
+            embedded_css,
+            format!("{}, {} 1.5x", EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL),
         );
     }
 
@@ -37,11 +72,18 @@ mod passing {
         let mut options = Options::default();
         options.no_images = true;
         options.silent = true;
-        let embedded_css = html::embed_srcset(cache, &client, "", &srcset_value, &options, 0);
+        let embedded_css = html::embed_srcset(
+            cache,
+            &client,
+            &Url::parse("data:,").unwrap(),
+            &srcset_value,
+            &options,
+            0,
+        );
 
         assert_eq!(
             embedded_css,
-            format!("{} 1x, {} 2x", empty_image!(), empty_image!()),
+            format!("{} 1x, {} 2x", EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL),
         );
     }
 
@@ -53,15 +95,20 @@ mod passing {
         let mut options = Options::default();
         options.no_images = true;
         options.silent = true;
-        let embedded_css = html::embed_srcset(cache, &client, "", &srcset_value, &options, 0);
+        let embedded_css = html::embed_srcset(
+            cache,
+            &client,
+            &Url::parse("data:,").unwrap(),
+            &srcset_value,
+            &options,
+            0,
+        );
 
         assert_eq!(
             embedded_css,
             format!(
                 "{} 1x, {} 2x, {} 3x",
-                empty_image!(),
-                empty_image!(),
-                empty_image!()
+                EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL
             ),
         );
     }
@@ -77,10 +124,12 @@ mod passing {
 #[cfg(test)]
 mod failing {
     use reqwest::blocking::Client;
+    use reqwest::Url;
     use std::collections::HashMap;
 
-    use crate::html;
-    use crate::opts::Options;
+    use monolith::html;
+    use monolith::opts::Options;
+    use monolith::url::EMPTY_IMAGE_DATA_URL;
 
     #[test]
     fn trailing_comma() {
@@ -90,11 +139,18 @@ mod failing {
         let mut options = Options::default();
         options.no_images = true;
         options.silent = true;
-        let embedded_css = html::embed_srcset(cache, &client, "", &srcset_value, &options, 0);
+        let embedded_css = html::embed_srcset(
+            cache,
+            &client,
+            &Url::parse("data:,").unwrap(),
+            &srcset_value,
+            &options,
+            0,
+        );
 
         assert_eq!(
             embedded_css,
-            format!("{} 1x, {} 2x,", empty_image!(), empty_image!()),
+            format!("{} 1x, {} 2x,", EMPTY_IMAGE_DATA_URL, EMPTY_IMAGE_DATA_URL),
         );
     }
 }

tests/html/get_base_url.rs

@@ -7,7 +7,7 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn present() {
@@ -19,11 +19,11 @@ mod passing {
     <body>
     </body>
 </html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
 
         assert_eq!(
             html::get_base_url(&dom.document),
-            Some(str!("https://musicbrainz.org"))
+            Some("https://musicbrainz.org".to_string())
         );
     }
 
@@ -38,11 +38,11 @@ mod passing {
     <body>
     </body>
 </html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
 
         assert_eq!(
             html::get_base_url(&dom.document),
-            Some(str!("https://www.discogs.com/"))
+            Some("https://www.discogs.com/".to_string())
         );
     }
 }
@@ -56,7 +56,7 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn absent() {
@@ -67,7 +67,7 @@ mod failing {
     <body>
     </body>
 </html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
 
         assert_eq!(html::get_base_url(&dom.document), None);
     }
@@ -82,7 +82,7 @@ mod failing {
     <body>
     </body>
 </html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
 
         assert_eq!(html::get_base_url(&dom.document), None);
     }
@@ -97,8 +97,8 @@ mod failing {
     <body>
     </body>
 </html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
 
-        assert_eq!(html::get_base_url(&dom.document), Some(str!()));
+        assert_eq!(html::get_base_url(&dom.document), Some("".to_string()));
     }
 }

tests/html/get_charset.rs

@@ -0,0 +1,72 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use monolith::html;
+
+    #[test]
+    fn meta_content_type() {
+        let html = "<!doctype html>
+<html>
+    <head>
+        <meta http-equiv=\"content-type\" content=\"text/html;charset=GB2312\" />
+    </head>
+    <body>
+    </body>
+</html>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+
+        assert_eq!(html::get_charset(&dom.document), Some("GB2312".to_string()));
+    }
+
+    #[test]
+    fn meta_charset() {
+        let html = "<!doctype html>
+<html>
+    <head>
+        <meta charset=\"GB2312\" />
+    </head>
+    <body>
+    </body>
+</html>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+
+        assert_eq!(html::get_charset(&dom.document), Some("GB2312".to_string()));
+    }
+
+    #[test]
+    fn multiple_conflicting_meta_charset_first() {
+        let html = "<!doctype html>
+<html>
+    <head>
+        <meta charset=\"utf-8\" />
+        <meta http-equiv=\"content-type\" content=\"text/html;charset=GB2312\" />
+    </head>
+    <body>
+    </body>
+</html>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+
+        assert_eq!(html::get_charset(&dom.document), Some("utf-8".to_string()));
+    }
+    #[test]
+    fn multiple_conflicting_meta_content_type_first() {
+        let html = "<!doctype html>
+<html>
+    <head>
+        <meta http-equiv=\"content-type\" content=\"text/html;charset=GB2312\" />
+        <meta charset=\"utf-8\" />
+    </head>
+    <body>
+    </body>
+</html>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+
+        assert_eq!(html::get_charset(&dom.document), Some("GB2312".to_string()));
+    }
+}

tests/html/get_node_attr.rs

@@ -9,12 +9,12 @@
 mod passing {
     use html5ever::rcdom::{Handle, NodeData};
 
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn div_two_style_attributes() {
         let html = "<!doctype html><html><head></head><body><DIV STYLE=\"color: blue;\" style=\"display: none;\"></div></body></html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut count = 0;
 
         fn test_walk(node: &Handle, i: &mut i8) {
@@ -35,7 +35,7 @@ mod passing {
                     } else if node_name == "div" {
                         assert_eq!(
                             html::get_node_attr(node, "style"),
-                            Some(str!("color: blue;"))
+                            Some("color: blue;".to_string())
                         );
                     }
 

tests/html/get_node_name.rs

@@ -9,12 +9,12 @@
 mod passing {
     use html5ever::rcdom::{Handle, NodeData};
 
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn parent_node_names() {
         let html = "<!doctype html><html><HEAD></HEAD><body><div><P></P></div></body></html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut count = 0;
 
         fn test_walk(node: &Handle, i: &mut i8) {

tests/html/has_favicon.rs

@@ -7,12 +7,12 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn icon() {
         let html = "<link rel=\"icon\" href=\"\" /><div>text</div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let res: bool = html::has_favicon(&dom.document);
 
         assert!(res);
@@ -21,7 +21,7 @@ mod passing {
     #[test]
     fn shortcut_icon() {
         let html = "<link rel=\"shortcut icon\" href=\"\" /><div>text</div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let res: bool = html::has_favicon(&dom.document);
 
         assert!(res);
@@ -37,12 +37,12 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn absent() {
         let html = "<div>text</div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let res: bool = html::has_favicon(&dom.document);
 
         assert!(!res);

tests/html/is_icon.rs

@@ -7,7 +7,7 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn icon() {
@@ -34,7 +34,7 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn mask_icon() {

tests/html/mod.rs

@@ -4,10 +4,11 @@ mod compose_csp;
 mod create_metadata_tag;
 mod embed_srcset;
 mod get_base_url;
+mod get_charset;
 mod get_node_attr;
 mod get_node_name;
 mod has_favicon;
 mod is_icon;
+mod serialize_document;
 mod set_node_attr;
-mod stringify_document;
 mod walk_and_embed_assets;

tests/html/serialize_document.rs

@@ -7,17 +7,17 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::html;
-    use crate::opts::Options;
+    use monolith::html;
+    use monolith::opts::Options;
 
     #[test]
     fn div_as_root_element() {
         let html = "<div><script src=\"some.js\"></script></div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let options = Options::default();
 
         assert_eq!(
-            html::stringify_document(&dom.document, &options),
+            String::from_utf8_lossy(&html::serialize_document(dom, "".to_string(), &options)),
             "<html><head></head><body><div><script src=\"some.js\"></script></div></body></html>"
         );
     }
@@ -28,18 +28,19 @@ mod passing {
                     <link rel=\"something\" href=\"some.css\" />\
                     <meta http-equiv=\"Content-Security-Policy\" content=\"default-src https:\">\
                     <div><script src=\"some.js\"></script></div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut options = Options::default();
         options.isolate = true;
 
         assert_eq!(
-            html::stringify_document(
-                &dom.document,
+            String::from_utf8_lossy(&html::serialize_document(
+                dom,
+                "".to_string(),
                 &options
-            ),
+            )),
             "<html>\
                 <head>\
-                    <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-inline' data:;\"></meta>\
+                    <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-eval' 'unsafe-inline' data:;\"></meta>\
                     <title>Isolated document</title>\
                     <link rel=\"something\" href=\"some.css\">\
                     <meta http-equiv=\"Content-Security-Policy\" content=\"default-src https:\">\
@@ -59,12 +60,12 @@ mod passing {
                     <title>Unstyled document</title>\
                     <link rel=\"stylesheet\" href=\"main.css\"/>\
                     <div style=\"display: none;\"></div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut options = Options::default();
         options.no_css = true;
 
         assert_eq!(
-            html::stringify_document(&dom.document, &options),
+            String::from_utf8_lossy(&html::serialize_document(dom, "".to_string(), &options)),
             "<!DOCTYPE html>\
             <html>\
             <head>\
@@ -83,15 +84,16 @@ mod passing {
                     <title>Frameless document</title>\
                     <link rel=\"something\"/>\
                     <div><script src=\"some.js\"></script></div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut options = Options::default();
         options.no_frames = true;
 
         assert_eq!(
-            html::stringify_document(
-                &dom.document,
+            String::from_utf8_lossy(&html::serialize_document(
+                dom,
+                "".to_string(),
                 &options
-            ),
+            )),
             "<!DOCTYPE html>\
                 <html>\
                 <head>\
@@ -115,7 +117,7 @@ mod passing {
                         <img style=\"width: 100%;\" src=\"some.png\" />\
                         <iframe src=\"some.html\"></iframe>\
                     </div>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut options = Options::default();
         options.isolate = true;
         options.no_css = true;
@@ -125,14 +127,15 @@ mod passing {
         options.no_images = true;
 
         assert_eq!(
-            html::stringify_document(
-                &dom.document,
+            String::from_utf8_lossy(&html::serialize_document(
+                dom,
+                "".to_string(),
                 &options
-            ),
+            )),
             "<!DOCTYPE html>\
                 <html>\
                     <head>\
-                        <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-inline' data:; style-src 'none'; font-src 'none'; frame-src 'none'; child-src 'none'; script-src 'none'; img-src data:;\"></meta>\
+                        <meta http-equiv=\"Content-Security-Policy\" content=\"default-src 'unsafe-eval' 'unsafe-inline' data:; style-src 'none'; font-src 'none'; frame-src 'none'; child-src 'none'; script-src 'none'; img-src data:;\"></meta>\
                         <title>no-frame no-css no-js no-image isolated document</title>\
                         <meta http-equiv=\"Content-Security-Policy\" content=\"default-src https:\">\
                         <link rel=\"stylesheet\" href=\"some.css\">\

tests/html/set_node_attr.rs

@@ -9,12 +9,12 @@
 mod passing {
     use html5ever::rcdom::{Handle, NodeData};
 
-    use crate::html;
+    use monolith::html;
 
     #[test]
     fn html_lang_and_body_style() {
         let html = "<!doctype html><html lang=\"en\"><head></head><body></body></html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut count = 0;
 
         fn test_walk(node: &Handle, i: &mut i8) {
@@ -31,23 +31,23 @@ mod passing {
                     let node_name = name.local.as_ref().to_string();
 
                     if node_name == "html" {
-                        assert_eq!(html::get_node_attr(node, "lang"), Some(str!("en")));
+                        assert_eq!(html::get_node_attr(node, "lang"), Some("en".to_string()));
 
-                        html::set_node_attr(node, "lang", Some(str!("de")));
-                        assert_eq!(html::get_node_attr(node, "lang"), Some(str!("de")));
+                        html::set_node_attr(node, "lang", Some("de".to_string()));
+                        assert_eq!(html::get_node_attr(node, "lang"), Some("de".to_string()));
 
                         html::set_node_attr(node, "lang", None);
                         assert_eq!(html::get_node_attr(node, "lang"), None);
 
-                        html::set_node_attr(node, "lang", Some(str!("")));
-                        assert_eq!(html::get_node_attr(node, "lang"), Some(str!("")));
+                        html::set_node_attr(node, "lang", Some("".to_string()));
+                        assert_eq!(html::get_node_attr(node, "lang"), Some("".to_string()));
                     } else if node_name == "body" {
                         assert_eq!(html::get_node_attr(node, "style"), None);
 
-                        html::set_node_attr(node, "style", Some(str!("display: none;")));
+                        html::set_node_attr(node, "style", Some("display: none;".to_string()));
                         assert_eq!(
                             html::get_node_attr(node, "style"),
-                            Some(str!("display: none;"))
+                            Some("display: none;".to_string())
                         );
                     }
 
@@ -67,7 +67,7 @@ mod passing {
     #[test]
     fn body_background() {
         let html = "<!doctype html><html lang=\"en\"><head></head><body background=\"1\" background=\"2\"></body></html>";
-        let dom = html::html_to_dom(&html);
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
         let mut count = 0;
 
         fn test_walk(node: &Handle, i: &mut i8) {
@@ -84,7 +84,10 @@ mod passing {
                     let node_name = name.local.as_ref().to_string();
 
                     if node_name == "body" {
-                        assert_eq!(html::get_node_attr(node, "background"), Some(str!("1")));
+                        assert_eq!(
+                            html::get_node_attr(node, "background"),
+                            Some("1".to_string())
+                        );
 
                         html::set_node_attr(node, "background", None);
                         assert_eq!(html::get_node_attr(node, "background"), None);

tests/html/walk_and_embed_assets.rs

@@ -0,0 +1,518 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use html5ever::serialize::{serialize, SerializeOpts};
+    use reqwest::blocking::Client;
+    use std::collections::HashMap;
+    use url::Url;
+
+    use monolith::html;
+    use monolith::opts::Options;
+    use monolith::url::EMPTY_IMAGE_DATA_URL;
+
+    #[test]
+    fn basic() {
+        let cache = &mut HashMap::new();
+
+        let html: &str = "<div><P></P></div>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+
+        let mut options = Options::default();
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "<html><head></head><body><div><p></p></div></body></html>"
+        );
+    }
+
+    #[test]
+    fn ensure_no_recursive_iframe() {
+        let html = "<div><P></P><iframe src=\"\"></iframe></div>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "<html><head></head><body><div><p></p><iframe src=\"\"></iframe></div></body></html>"
+        );
+    }
+
+    #[test]
+    fn ensure_no_recursive_frame() {
+        let html = "<frameset><frame src=\"\"></frameset>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "<html><head></head><frameset><frame src=\"\"></frameset></html>"
+        );
+    }
+
+    #[test]
+    fn no_css() {
+        let html = "\
+            <link rel=\"stylesheet\" href=\"main.css\">\
+            <link rel=\"alternate stylesheet\" href=\"main.css\">\
+            <style>html{background-color: #000;}</style>\
+            <div style=\"display: none;\"></div>\
+        ";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_css = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                    <link rel=\"stylesheet\">\
+                    <link rel=\"alternate stylesheet\">\
+                    <style></style>\
+                </head>\
+                <body>\
+                    <div></div>\
+                </body>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn no_images() {
+        let html = "<link rel=\"icon\" href=\"favicon.ico\">\
+                    <div><img src=\"http://localhost/assets/mono_lisa.png\" /></div>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_images = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            format!(
+                "<html>\
+                    <head>\
+                        <link rel=\"icon\">\
+                    </head>\
+                    <body>\
+                        <div>\
+                            <img src=\"{empty_image}\">\
+                        </div>\
+                    </body>\
+                </html>",
+                empty_image = EMPTY_IMAGE_DATA_URL
+            )
+        );
+    }
+
+    #[test]
+    fn no_body_background_images() {
+        let html =
+            "<body background=\"no/such/image.png\" background=\"no/such/image2.png\"></body>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_images = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "<html><head></head><body></body></html>"
+        );
+    }
+
+    #[test]
+    fn no_frames() {
+        let html = "<frameset><frame src=\"http://trackbook.com\"></frameset>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_frames = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                </head>\
+                <frameset>\
+                    <frame src=\"\">\
+                </frameset>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn no_iframes() {
+        let html = "<iframe src=\"http://trackbook.com\"></iframe>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_frames = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head></head>\
+                <body>\
+                    <iframe src=\"\"></iframe>\
+                </body>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn no_js() {
+        let html = "\
+            <div onClick=\"void(0)\">\
+                <script src=\"http://localhost/assets/some.js\"></script>\
+                <script>alert(1)</script>\
+            </div>\
+        ";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_js = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head></head>\
+                <body>\
+                    <div>\
+                        <script></script>\
+                        <script></script>\
+                    </div>\
+                </body>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn keeps_integrity_for_unfamiliar_links() {
+        let html = "<title>Has integrity</title>\
+                    <link integrity=\"sha384-12345\" rel=\"something\" href=\"https://some-site.com/some-file.ext\" />";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                    <title>Has integrity</title>\
+                    <link integrity=\"sha384-12345\" rel=\"something\" href=\"https://some-site.com/some-file.ext\">\
+                </head>\
+                <body></body>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn discards_integrity_for_known_links_nojs_nocss() {
+        let html = "\
+            <title>No integrity</title>\
+            <link integrity=\"\" rel=\"stylesheet\" href=\"data:;\"/>\
+            <script integrity=\"\" src=\"some.js\"></script>\
+        ";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_css = true;
+        options.no_js = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                    <title>No integrity</title>\
+                    <link rel=\"stylesheet\">\
+                    <script></script>\
+                </head>\
+                <body></body>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn discards_integrity_for_embedded_assets() {
+        let html = "\
+            <title>No integrity</title>\
+            <link integrity=\"sha384-123\" rel=\"something\" href=\"data:;\"/>\
+            <script integrity=\"sha384-456\" src=\"some.js\"></script>\
+        ";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_css = true;
+        options.no_js = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                    <title>No integrity</title>\
+                    <link integrity=\"sha384-123\" rel=\"something\" href=\"data:;\">\
+                    <script></script>\
+                </head>\
+                <body>\
+                </body>\
+            </html>\
+            "
+        );
+    }
+
+    #[test]
+    fn removes_unwanted_meta_tags() {
+        let html = "\
+            <html>\
+                <head>\
+                    <meta http-equiv=\"Refresh\" content=\"2\"/>\
+                    <meta http-equiv=\"Location\" content=\"https://freebsd.org\"/>\
+                </head>\
+                <body>\
+                </body>\
+            </html>\
+        ";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_css = true;
+        options.no_frames = true;
+        options.no_js = true;
+        options.no_images = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                    <meta content=\"2\">\
+                    <meta content=\"https://freebsd.org\">\
+                </head>\
+                <body>\
+                </body>\
+            </html>"
+        );
+    }
+
+    #[test]
+    fn processes_noscript_tags() {
+        let html = "\
+        <html>\
+            <body>\
+                <noscript>\
+                    <img src=\"image.png\" />\
+                </noscript>\
+            </body>\
+        </html>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.no_images = true;
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            format!(
+                "\
+                <html>\
+                    <head>\
+                    </head>\
+                    <body>\
+                        <noscript>\
+                            <img src=\"{}\">\
+                        </noscript>\
+                    </body>\
+                </html>",
+                EMPTY_IMAGE_DATA_URL,
+            )
+        );
+    }
+
+    #[test]
+    fn preserves_script_type_json() {
+        let html = "<script id=\"data\" type=\"application/json\">{\"mono\":\"lith\"}</script>";
+        let dom = html::html_to_dom(&html.as_bytes().to_vec(), "".to_string());
+        let url: Url = Url::parse("http://localhost").unwrap();
+        let cache = &mut HashMap::new();
+
+        let mut options = Options::default();
+        options.silent = true;
+
+        let client = Client::new();
+
+        html::walk_and_embed_assets(cache, &client, &url, &dom.document, &options, 0);
+
+        let mut buf: Vec<u8> = Vec::new();
+        serialize(&mut buf, &dom.document, SerializeOpts::default()).unwrap();
+
+        assert_eq!(
+            buf.iter().map(|&c| c as char).collect::<String>(),
+            "\
+            <html>\
+                <head>\
+                    <script id=\"data\" type=\"application/json\">{\"mono\":\"lith\"}</script>\
+                </head>\
+                <body>\
+                </body>\
+            </html>"
+        );
+    }
+}

tests/js/attr_is_event_handler.rs

@@ -7,7 +7,7 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::js;
+    use monolith::js;
 
     #[test]
     fn onblur_camelcase() {
@@ -34,7 +34,7 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::js;
+    use monolith::js;
 
     #[test]
     fn href() {

tests/mod.rs

@@ -2,7 +2,7 @@ mod cli;
 mod css;
 mod html;
 mod js;
-mod macros;
+// mod macros;
 mod opts;
 mod url;
 mod utils;

tests/opts.rs

@@ -7,15 +7,16 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::opts::Options;
+    use monolith::opts::Options;
 
     #[test]
     fn defaults() {
         let options: Options = Options::default();
 
-        assert_eq!(options.target, str!());
         assert_eq!(options.no_audio, false);
+        assert_eq!(options.base_url, None);
         assert_eq!(options.no_css, false);
+        assert_eq!(options.charset, None);
         assert_eq!(options.no_frames, false);
         assert_eq!(options.no_fonts, false);
         assert_eq!(options.no_images, false);
@@ -23,10 +24,12 @@ mod passing {
         assert_eq!(options.no_js, false);
         assert_eq!(options.insecure, false);
         assert_eq!(options.no_metadata, false);
-        assert_eq!(options.output, str!());
+        assert_eq!(options.output, "".to_string());
         assert_eq!(options.silent, false);
         assert_eq!(options.timeout, 0);
-        assert_eq!(options.user_agent, "");
+        assert_eq!(options.user_agent, None);
         assert_eq!(options.no_video, false);
+
+        assert_eq!(options.target, "".to_string());
     }
 }

tests/url/clean_url.rs

@@ -7,12 +7,24 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::url;
+    use reqwest::Url;
+
+    use monolith::url;
+
+    #[test]
+    fn preserve_original() {
+        let u: Url = Url::parse("https://somewhere.com/font.eot#iefix").unwrap();
+
+        let clean_u: Url = url::clean_url(u.clone());
+
+        assert_eq!(clean_u.as_str(), "https://somewhere.com/font.eot");
+        assert_eq!(u.as_str(), "https://somewhere.com/font.eot#iefix");
+    }
 
     #[test]
     fn removes_fragment() {
         assert_eq!(
-            url::clean_url("https://somewhere.com/font.eot#iefix"),
+            url::clean_url(Url::parse("https://somewhere.com/font.eot#iefix").unwrap()).as_str(),
             "https://somewhere.com/font.eot"
         );
     }
@@ -20,31 +32,31 @@ mod passing {
     #[test]
     fn removes_empty_fragment() {
         assert_eq!(
-            url::clean_url("https://somewhere.com/font.eot#"),
+            url::clean_url(Url::parse("https://somewhere.com/font.eot#").unwrap()).as_str(),
             "https://somewhere.com/font.eot"
         );
     }
 
     #[test]
-    fn removes_empty_query_and_empty_fragment() {
+    fn removes_empty_fragment_and_keeps_empty_query() {
         assert_eq!(
-            url::clean_url("https://somewhere.com/font.eot?#"),
-            "https://somewhere.com/font.eot"
+            url::clean_url(Url::parse("https://somewhere.com/font.eot?#").unwrap()).as_str(),
+            "https://somewhere.com/font.eot?"
         );
     }
 
     #[test]
-    fn removes_empty_query_amp_and_empty_fragment() {
+    fn removesempty_fragment_and_keeps_empty_query() {
         assert_eq!(
-            url::clean_url("https://somewhere.com/font.eot?a=b&#"),
-            "https://somewhere.com/font.eot?a=b"
+            url::clean_url(Url::parse("https://somewhere.com/font.eot?a=b&#").unwrap()).as_str(),
+            "https://somewhere.com/font.eot?a=b&"
         );
     }
 
     #[test]
     fn keeps_credentials() {
         assert_eq!(
-            url::clean_url("https://cookie:monster@gibson.internet/"),
+            url::clean_url(Url::parse("https://cookie:monster@gibson.internet/").unwrap()).as_str(),
             "https://cookie:monster@gibson.internet/"
         );
     }

tests/url/create_data_url.rs

@@ -0,0 +1,109 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use reqwest::Url;
+
+    use monolith::url;
+
+    #[test]
+    fn encode_string_with_specific_media_type() {
+        let media_type = "application/javascript";
+        let data = "var word = 'hello';\nalert(word);\n";
+        let data_url = url::create_data_url(
+            media_type,
+            "",
+            data.as_bytes(),
+            &Url::parse("data:,").unwrap(),
+        );
+
+        assert_eq!(
+            data_url.as_str(),
+            "data:application/javascript;base64,dmFyIHdvcmQgPSAnaGVsbG8nOwphbGVydCh3b3JkKTsK"
+        );
+    }
+
+    #[test]
+    fn encode_append_fragment() {
+        let data = "<svg></svg>\n";
+        let data_url = url::create_data_url(
+            "image/svg+xml",
+            "",
+            data.as_bytes(),
+            &Url::parse("data:,").unwrap(),
+        );
+
+        assert_eq!(
+            data_url.as_str(),
+            "data:image/svg+xml;base64,PHN2Zz48L3N2Zz4K"
+        );
+    }
+
+    #[test]
+    fn encode_string_with_specific_media_type_and_charset() {
+        let media_type = "application/javascript";
+        let charset = "utf8";
+        let data = "var word = 'hello';\nalert(word);\n";
+        let data_url = url::create_data_url(
+            media_type,
+            charset,
+            data.as_bytes(),
+            &Url::parse("data:,").unwrap(),
+        );
+
+        assert_eq!(
+            data_url.as_str(),
+            "data:application/javascript;charset=utf8;base64,dmFyIHdvcmQgPSAnaGVsbG8nOwphbGVydCh3b3JkKTsK"
+        );
+    }
+
+    #[test]
+    fn create_data_url_with_us_ascii_charset() {
+        let media_type = "";
+        let charset = "us-ascii";
+        let data = "";
+        let data_url = url::create_data_url(
+            media_type,
+            charset,
+            data.as_bytes(),
+            &Url::parse("data:,").unwrap(),
+        );
+
+        assert_eq!(data_url.as_str(), "data:;base64,");
+    }
+
+    #[test]
+    fn create_data_url_with_utf8_charset() {
+        let media_type = "";
+        let charset = "utf8";
+        let data = "";
+        let data_url = url::create_data_url(
+            media_type,
+            charset,
+            data.as_bytes(),
+            &Url::parse("data:,").unwrap(),
+        );
+
+        assert_eq!(data_url.as_str(), "data:;charset=utf8;base64,");
+    }
+
+    #[test]
+    fn create_data_url_with_media_type_text_plain_and_utf8_charset() {
+        let media_type = "text/plain";
+        let charset = "utf8";
+        let data = "";
+        let data_url = url::create_data_url(
+            media_type,
+            charset,
+            data.as_bytes(),
+            &Url::parse("data:,").unwrap(),
+        );
+
+        assert_eq!(data_url.as_str(), "data:text/plain;charset=utf8;base64,");
+    }
+}

tests/url/is_url_and_has_protocol.rs

@@ -7,57 +7,67 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::url;
+    use monolith::url;
 
     #[test]
     fn mailto() {
-        assert!(url::url_has_protocol(
+        assert!(url::is_url_and_has_protocol(
             "mailto:somebody@somewhere.com?subject=hello"
         ));
     }
 
     #[test]
     fn tel() {
-        assert!(url::url_has_protocol("tel:5551234567"));
+        assert!(url::is_url_and_has_protocol("tel:5551234567"));
     }
 
     #[test]
     fn ftp_no_slashes() {
-        assert!(url::url_has_protocol("ftp:some-ftp-server.com"));
+        assert!(url::is_url_and_has_protocol("ftp:some-ftp-server.com"));
     }
 
     #[test]
     fn ftp_with_credentials() {
-        assert!(url::url_has_protocol(
+        assert!(url::is_url_and_has_protocol(
             "ftp://user:password@some-ftp-server.com"
         ));
     }
 
     #[test]
     fn javascript() {
-        assert!(url::url_has_protocol("javascript:void(0)"));
+        assert!(url::is_url_and_has_protocol("javascript:void(0)"));
     }
 
     #[test]
     fn http() {
-        assert!(url::url_has_protocol("http://news.ycombinator.com"));
+        assert!(url::is_url_and_has_protocol("http://news.ycombinator.com"));
     }
 
     #[test]
     fn https() {
-        assert!(url::url_has_protocol("https://github.com"));
+        assert!(url::is_url_and_has_protocol("https://github.com"));
+    }
+
+    #[test]
+    fn file() {
+        assert!(url::is_url_and_has_protocol("file:///tmp/image.png"));
     }
 
     #[test]
     fn mailto_uppercase() {
-        assert!(url::url_has_protocol(
+        assert!(url::is_url_and_has_protocol(
             "MAILTO:somebody@somewhere.com?subject=hello"
         ));
     }
 
     #[test]
     fn empty_data_url() {
-        assert!(url::url_has_protocol("data:text/html,"));
+        assert!(url::is_url_and_has_protocol("data:text/html,"));
+    }
+
+    #[test]
+    fn empty_data_url_surrounded_by_spaces() {
+        assert!(url::is_url_and_has_protocol(" data:text/html, "));
     }
 }
 
@@ -70,25 +80,31 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::url;
+    use monolith::url;
 
     #[test]
     fn url_with_no_protocol() {
-        assert!(!url::url_has_protocol("//some-hostname.com/some-file.html"));
+        assert_eq!(
+            url::is_url_and_has_protocol("//some-hostname.com/some-file.html"),
+            false
+        );
     }
 
     #[test]
     fn relative_path() {
-        assert!(!url::url_has_protocol("some-hostname.com/some-file.html"));
+        assert_eq!(
+            url::is_url_and_has_protocol("some-hostname.com/some-file.html"),
+            false
+        );
     }
 
     #[test]
     fn relative_to_root_path() {
-        assert!(!url::url_has_protocol("/some-file.html"));
+        assert_eq!(url::is_url_and_has_protocol("/some-file.html"), false);
     }
 
     #[test]
     fn empty_string() {
-        assert!(!url::url_has_protocol(""));
+        assert_eq!(url::is_url_and_has_protocol(""), false);
     }
 }

tests/url/mod.rs

@@ -0,0 +1,5 @@
+mod clean_url;
+mod create_data_url;
+mod is_url_and_has_protocol;
+mod parse_data_url;
+mod resolve_url;

tests/url/parse_data_url.rs

@@ -7,13 +7,16 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::url;
+    use reqwest::Url;
+
+    use monolith::url;
 
     #[test]
     fn parse_text_html_base64() {
-        let (media_type, data) = url::parse_data_url("data:text/html;base64,V29yayBleHBhbmRzIHNvIGFzIHRvIGZpbGwgdGhlIHRpbWUgYXZhaWxhYmxlIGZvciBpdHMgY29tcGxldGlvbg==");
+        let (media_type, charset, data) = url::parse_data_url(&Url::parse("data:text/html;base64,V29yayBleHBhbmRzIHNvIGFzIHRvIGZpbGwgdGhlIHRpbWUgYXZhaWxhYmxlIGZvciBpdHMgY29tcGxldGlvbg==").unwrap());
 
         assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "US-ASCII");
         assert_eq!(
             String::from_utf8_lossy(&data),
             "Work expands so as to fill the time available for its completion"
@@ -22,11 +25,12 @@ mod passing {
 
     #[test]
     fn parse_text_html_utf8() {
-        let (media_type, data) = url::parse_data_url(
-            "data:text/html;utf8,Work expands so as to fill the time available for its completion",
+        let (media_type, charset, data) = url::parse_data_url(
+            &Url::parse("data:text/html;charset=utf8,Work expands so as to fill the time available for its completion").unwrap(),
         );
 
         assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "utf8");
         assert_eq!(
             String::from_utf8_lossy(&data),
             "Work expands so as to fill the time available for its completion"
@@ -35,22 +39,15 @@ mod passing {
 
     #[test]
     fn parse_text_html_plaintext() {
-        let (media_type, data) = url::parse_data_url(
+        let (media_type, charset, data) = url::parse_data_url(
+            &Url::parse(
                 "data:text/html,Work expands so as to fill the time available for its completion",
+            )
+            .unwrap(),
         );
 
         assert_eq!(media_type, "text/html");
-        assert_eq!(
-            String::from_utf8_lossy(&data),
-            "Work expands so as to fill the time available for its completion"
-        );
-    }
-
-    #[test]
-    fn parse_text_html_charset_utf_8_between_two_whitespaces() {
-        let (media_type, data) = url::parse_data_url(" data:text/html;charset=utf-8,Work expands so as to fill the time available for its completion ");
-
-        assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "US-ASCII");
         assert_eq!(
             String::from_utf8_lossy(&data),
             "Work expands so as to fill the time available for its completion"
@@ -59,25 +56,31 @@ mod passing {
 
     #[test]
     fn parse_text_css_url_encoded() {
-        let (media_type, data) = url::parse_data_url("data:text/css,div{background-color:%23000}");
+        let (media_type, charset, data) =
+            url::parse_data_url(&Url::parse("data:text/css,div{background-color:%23000}").unwrap());
 
         assert_eq!(media_type, "text/css");
+        assert_eq!(charset, "US-ASCII");
         assert_eq!(String::from_utf8_lossy(&data), "div{background-color:#000}");
     }
 
     #[test]
     fn parse_no_media_type_base64() {
-        let (media_type, data) = url::parse_data_url("data:;base64,dGVzdA==");
+        let (media_type, charset, data) =
+            url::parse_data_url(&Url::parse("data:;base64,dGVzdA==").unwrap());
 
-        assert_eq!(media_type, "");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "US-ASCII");
         assert_eq!(String::from_utf8_lossy(&data), "test");
     }
 
     #[test]
     fn parse_no_media_type_no_encoding() {
-        let (media_type, data) = url::parse_data_url("data:;,test%20test");
+        let (media_type, charset, data) =
+            url::parse_data_url(&Url::parse("data:;,test%20test").unwrap());
 
-        assert_eq!(media_type, "");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "US-ASCII");
         assert_eq!(String::from_utf8_lossy(&data), "test test");
     }
 }
@@ -91,13 +94,16 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::url;
+    use reqwest::Url;
+
+    use monolith::url;
 
     #[test]
-    fn just_word_data() {
-        let (media_type, data) = url::parse_data_url("data");
+    fn empty_data_url() {
+        let (media_type, charset, data) = url::parse_data_url(&Url::parse("data:,").unwrap());
 
-        assert_eq!(media_type, "");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "US-ASCII");
         assert_eq!(String::from_utf8_lossy(&data), "");
     }
 }

tests/url/resolve_url.rs

@@ -7,26 +7,49 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::url;
+    use reqwest::Url;
+
+    use monolith::url;
 
     #[test]
-    fn from_https_to_level_up_relative() {
+    fn basic_httsp_relative() {
         assert_eq!(
-            url::resolve_url("https://www.kernel.org", "../category/signatures.html")
-                .unwrap_or_default(),
-            "https://www.kernel.org/category/signatures.html"
+            url::resolve_url(
+                &Url::parse("https://www.kernel.org").unwrap(),
+                "category/signatures.html"
+            )
+            .as_str(),
+            Url::parse("https://www.kernel.org/category/signatures.html")
+                .unwrap()
+                .as_str()
         );
     }
 
     #[test]
-    fn from_just_filename_to_full_https_url() {
+    fn basic_httsp_absolute() {
         assert_eq!(
             url::resolve_url(
-                "saved_page.htm",
-                "https://www.kernel.org/category/signatures.html",
+                &Url::parse("https://www.kernel.org").unwrap(),
+                "/category/signatures.html"
             )
-            .unwrap_or_default(),
-            "https://www.kernel.org/category/signatures.html"
+            .as_str(),
+            Url::parse("https://www.kernel.org/category/signatures.html")
+                .unwrap()
+                .as_str()
+        );
+    }
+
+    #[test]
+    fn from_https_to_level_up_relative() {
+        assert_eq!(
+            url::resolve_url(
+                &Url::parse("https://www.kernel.org").unwrap(),
+                "../category/signatures.html"
+            )
+            .as_str(),
+            Url::parse("https://www.kernel.org/category/signatures.html")
+                .unwrap()
+                .as_str()
         );
     }
 
@@ -34,10 +57,10 @@ mod passing {
     fn from_https_url_to_url_with_no_protocol() {
         assert_eq!(
             url::resolve_url(
-                "https://www.kernel.org",
+                &Url::parse("https://www.kernel.org").unwrap(),
                 "//www.kernel.org/theme/images/logos/tux.png",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "https://www.kernel.org/theme/images/logos/tux.png"
         );
     }
@@ -46,22 +69,22 @@ mod passing {
     fn from_https_url_to_url_with_no_protocol_and_on_different_hostname() {
         assert_eq!(
             url::resolve_url(
-                "https://www.kernel.org",
+                &Url::parse("https://www.kernel.org").unwrap(),
                 "//another-host.org/theme/images/logos/tux.png",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "https://another-host.org/theme/images/logos/tux.png"
         );
     }
 
     #[test]
-    fn from_https_url_to_relative_root_path() {
+    fn from_https_url_to_absolute_path() {
         assert_eq!(
             url::resolve_url(
-                "https://www.kernel.org/category/signatures.html",
+                &Url::parse("https://www.kernel.org/category/signatures.html").unwrap(),
                 "/theme/images/logos/tux.png",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "https://www.kernel.org/theme/images/logos/tux.png"
         );
     }
@@ -70,10 +93,10 @@ mod passing {
     fn from_https_to_just_filename() {
         assert_eq!(
             url::resolve_url(
-                "https://www.w3schools.com/html/html_iframe.asp",
+                &Url::parse("https://www.w3schools.com/html/html_iframe.asp").unwrap(),
                 "default.asp",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "https://www.w3schools.com/html/default.asp"
         );
     }
@@ -82,10 +105,11 @@ mod passing {
     fn from_data_url_to_https() {
         assert_eq!(
             url::resolve_url(
-                "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h",
+                &Url::parse("data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h")
+                    .unwrap(),
                 "https://www.kernel.org/category/signatures.html",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "https://www.kernel.org/category/signatures.html"
         );
     }
@@ -94,10 +118,11 @@ mod passing {
     fn from_data_url_to_data_url() {
         assert_eq!(
             url::resolve_url(
-                "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h",
+                &Url::parse("data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h")
+                    .unwrap(),
                 "data:text/html;base64,PGEgaHJlZj0iaW5kZXguaHRtbCI+SG9tZTwvYT4K",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "data:text/html;base64,PGEgaHJlZj0iaW5kZXguaHRtbCI+SG9tZTwvYT4K"
         );
     }
@@ -106,10 +131,10 @@ mod passing {
     fn from_file_url_to_relative_path() {
         assert_eq!(
             url::resolve_url(
-                "file:///home/user/Websites/my-website/index.html",
+                &Url::parse("file:///home/user/Websites/my-website/index.html").unwrap(),
                 "assets/images/logo.png",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "file:///home/user/Websites/my-website/assets/images/logo.png"
         );
     }
@@ -118,10 +143,10 @@ mod passing {
     fn from_file_url_to_relative_path_with_backslashes() {
         assert_eq!(
             url::resolve_url(
-                "file:\\\\\\home\\user\\Websites\\my-website\\index.html",
+                &Url::parse("file:\\\\\\home\\user\\Websites\\my-website\\index.html").unwrap(),
                 "assets\\images\\logo.png",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "file:///home/user/Websites/my-website/assets/images/logo.png"
         );
     }
@@ -130,10 +155,11 @@ mod passing {
     fn from_data_url_to_file_url() {
         assert_eq!(
             url::resolve_url(
-                "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h",
+                &Url::parse("data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h")
+                    .unwrap(),
                 "file:///etc/passwd",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "file:///etc/passwd"
         );
     }
@@ -142,30 +168,35 @@ mod passing {
     fn preserve_fragment() {
         assert_eq!(
             url::resolve_url(
-                "http://doesnt-matter.local/",
+                &Url::parse("http://doesnt-matter.local/").unwrap(),
                 "css/fonts/fontmarvelous.svg#fontmarvelous",
             )
-            .unwrap_or_default(),
+            .as_str(),
             "http://doesnt-matter.local/css/fonts/fontmarvelous.svg#fontmarvelous"
         );
     }
 
     #[test]
     fn resolve_from_file_url_to_file_url() {
+        if cfg!(windows) {
             assert_eq!(
-            if cfg!(windows) {
-                url::resolve_url("file:///c:/index.html", "file:///c:/image.png")
-                    .unwrap_or_default()
-            } else {
-                url::resolve_url("file:///tmp/index.html", "file:///tmp/image.png")
-                    .unwrap_or_default()
-            },
-            if cfg!(windows) {
+                url::resolve_url(
+                    &Url::parse("file:///c:/index.html").unwrap(),
+                    "file:///c:/image.png"
+                )
+                .as_str(),
                 "file:///c:/image.png"
-            } else {
-                "file:///tmp/image.png"
-            }
             );
+        } else {
+            assert_eq!(
+                url::resolve_url(
+                    &Url::parse("file:///tmp/index.html").unwrap(),
+                    "file:///tmp/image.png"
+                )
+                .as_str(),
+                "file:///tmp/image.png"
+            );
+        }
     }
 }
 
@@ -178,17 +209,20 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::url;
+    use reqwest::Url;
+
+    use monolith::url;
 
     #[test]
     fn from_data_url_to_url_with_no_protocol() {
         assert_eq!(
             url::resolve_url(
-                "data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h",
+                &Url::parse("data:text/html;base64,V2VsY29tZSBUbyBUaGUgUGFydHksIDxiPlBhbDwvYj4h")
+                    .unwrap(),
                 "//www.w3schools.com/html/html_iframe.asp",
             )
-            .unwrap_or_default(),
-            ""
+            .as_str(),
+            "data:,"
         );
     }
 }

tests/utils/detect_media_type.rs

@@ -7,131 +7,171 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::utils;
+    use reqwest::Url;
+
+    use monolith::utils;
 
     #[test]
     fn image_gif87() {
-        assert_eq!(utils::detect_media_type(b"GIF87a", ""), "image/gif");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(utils::detect_media_type(b"GIF87a", &dummy_url), "image/gif");
     }
 
     #[test]
     fn image_gif89() {
-        assert_eq!(utils::detect_media_type(b"GIF89a", ""), "image/gif");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(utils::detect_media_type(b"GIF89a", &dummy_url), "image/gif");
     }
 
     #[test]
     fn image_jpeg() {
-        assert_eq!(utils::detect_media_type(b"\xFF\xD8\xFF", ""), "image/jpeg");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"\xFF\xD8\xFF", &dummy_url),
+            "image/jpeg"
+        );
     }
 
     #[test]
     fn image_png() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"\x89PNG\x0D\x0A\x1A\x0A", ""),
+            utils::detect_media_type(b"\x89PNG\x0D\x0A\x1A\x0A", &dummy_url),
             "image/png"
         );
     }
 
     #[test]
     fn image_svg() {
-        assert_eq!(utils::detect_media_type(b"<svg ", ""), "image/svg+xml");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"<svg ", &dummy_url),
+            "image/svg+xml"
+        );
     }
 
     #[test]
     fn image_webp() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"RIFF....WEBPVP8 ", ""),
+            utils::detect_media_type(b"RIFF....WEBPVP8 ", &dummy_url),
             "image/webp"
         );
     }
 
     #[test]
     fn image_icon() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"\x00\x00\x01\x00", ""),
+            utils::detect_media_type(b"\x00\x00\x01\x00", &dummy_url),
             "image/x-icon"
         );
     }
 
     #[test]
     fn image_svg_filename() {
+        let file_url: Url = Url::parse("file:///tmp/local-file.svg").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"<?xml ", "local-file.svg"),
+            utils::detect_media_type(b"<?xml ", &file_url),
             "image/svg+xml"
         );
     }
 
     #[test]
     fn image_svg_url_uppercase() {
-        assert_eq!(
-            utils::detect_media_type(b"", "https://some-site.com/images/local-file.SVG"),
-            "image/svg+xml"
-        );
+        let https_url: Url = Url::parse("https://some-site.com/images/local-file.SVG").unwrap();
+        assert_eq!(utils::detect_media_type(b"", &https_url), "image/svg+xml");
     }
 
     #[test]
     fn audio_mpeg() {
-        assert_eq!(utils::detect_media_type(b"ID3", ""), "audio/mpeg");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(utils::detect_media_type(b"ID3", &dummy_url), "audio/mpeg");
     }
 
     #[test]
     fn audio_mpeg_2() {
-        assert_eq!(utils::detect_media_type(b"\xFF\x0E", ""), "audio/mpeg");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"\xFF\x0E", &dummy_url),
+            "audio/mpeg"
+        );
     }
 
     #[test]
     fn audio_mpeg_3() {
-        assert_eq!(utils::detect_media_type(b"\xFF\x0F", ""), "audio/mpeg");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"\xFF\x0F", &dummy_url),
+            "audio/mpeg"
+        );
     }
 
     #[test]
     fn audio_ogg() {
-        assert_eq!(utils::detect_media_type(b"OggS", ""), "audio/ogg");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(utils::detect_media_type(b"OggS", &dummy_url), "audio/ogg");
     }
 
     #[test]
     fn audio_wav() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"RIFF....WAVEfmt ", ""),
+            utils::detect_media_type(b"RIFF....WAVEfmt ", &dummy_url),
             "audio/wav"
         );
     }
 
     #[test]
     fn audio_flac() {
-        assert_eq!(utils::detect_media_type(b"fLaC", ""), "audio/x-flac");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"fLaC", &dummy_url),
+            "audio/x-flac"
+        );
     }
 
     #[test]
     fn video_avi() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"RIFF....AVI LIST", ""),
+            utils::detect_media_type(b"RIFF....AVI LIST", &dummy_url),
             "video/avi"
         );
     }
 
     #[test]
     fn video_mp4() {
-        assert_eq!(utils::detect_media_type(b"....ftyp", ""), "video/mp4");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"....ftyp", &dummy_url),
+            "video/mp4"
+        );
     }
 
     #[test]
     fn video_mpeg() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"\x00\x00\x01\x0B", ""),
+            utils::detect_media_type(b"\x00\x00\x01\x0B", &dummy_url),
             "video/mpeg"
         );
     }
 
     #[test]
     fn video_quicktime() {
-        assert_eq!(utils::detect_media_type(b"....moov", ""), "video/quicktime");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"....moov", &dummy_url),
+            "video/quicktime"
+        );
     }
 
     #[test]
     fn video_webm() {
+        let dummy_url: Url = Url::parse("data:,").unwrap();
         assert_eq!(
-            utils::detect_media_type(b"\x1A\x45\xDF\xA3", ""),
+            utils::detect_media_type(b"\x1A\x45\xDF\xA3", &dummy_url),
             "video/webm"
         );
     }
@@ -146,10 +186,16 @@ mod passing {
 
 #[cfg(test)]
 mod failing {
-    use crate::utils;
+    use reqwest::Url;
+
+    use monolith::utils;
 
     #[test]
     fn unknown_media_type() {
-        assert_eq!(utils::detect_media_type(b"abcdef0123456789", ""), "");
+        let dummy_url: Url = Url::parse("data:,").unwrap();
+        assert_eq!(
+            utils::detect_media_type(b"abcdef0123456789", &dummy_url),
+            ""
+        );
     }
 }

tests/utils/domain_is_within_domain.rs

@@ -0,0 +1,154 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use monolith::utils;
+
+    #[test]
+    fn sub_domain_is_within_dotted_sub_domain() {
+        assert!(utils::domain_is_within_domain(
+            "news.ycombinator.com",
+            ".news.ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn domain_is_within_dotted_domain() {
+        assert!(utils::domain_is_within_domain(
+            "ycombinator.com",
+            ".ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn sub_domain_is_within_dotted_domain() {
+        assert!(utils::domain_is_within_domain(
+            "news.ycombinator.com",
+            ".ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn sub_domain_is_within_dotted_top_level_domain() {
+        assert!(utils::domain_is_within_domain(
+            "news.ycombinator.com",
+            ".com"
+        ));
+    }
+
+    #[test]
+    fn domain_is_within_itself() {
+        assert!(utils::domain_is_within_domain(
+            "ycombinator.com",
+            "ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn domain_with_trailing_dot_is_within_itself() {
+        assert!(utils::domain_is_within_domain(
+            "ycombinator.com.",
+            "ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn domain_with_trailing_dot_is_within_single_dot() {
+        assert!(utils::domain_is_within_domain("ycombinator.com.", "."));
+    }
+
+    #[test]
+    fn domain_matches_single_dot() {
+        assert!(utils::domain_is_within_domain("ycombinator.com", "."));
+    }
+
+    #[test]
+    fn dotted_domain_must_be_within_dotted_domain() {
+        assert!(utils::domain_is_within_domain(
+            ".ycombinator.com",
+            ".ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn empty_is_within_dot() {
+        assert!(utils::domain_is_within_domain("", "."));
+    }
+
+    #[test]
+    fn both_dots() {
+        assert!(utils::domain_is_within_domain(".", "."));
+    }
+}
+
+//  ███████╗ █████╗ ██╗██╗     ██╗███╗   ██╗ ██████╗
+//  ██╔════╝██╔══██╗██║██║     ██║████╗  ██║██╔════╝
+//  █████╗  ███████║██║██║     ██║██╔██╗ ██║██║  ███╗
+//  ██╔══╝  ██╔══██║██║██║     ██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║██║███████╗██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚═╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod failing {
+    use monolith::utils;
+
+    #[test]
+    fn sub_domain_must_not_be_within_domain() {
+        assert!(!utils::domain_is_within_domain(
+            "news.ycombinator.com",
+            "ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn domain_must_not_be_within_top_level_domain() {
+        assert!(!utils::domain_is_within_domain("ycombinator.com", "com"));
+    }
+
+    #[test]
+    fn different_domains_must_not_be_within_one_another() {
+        assert!(!utils::domain_is_within_domain(
+            "news.ycombinator.com",
+            "kernel.org"
+        ));
+    }
+
+    #[test]
+    fn sub_domain_is_not_within_wrong_top_level_domain() {
+        assert!(!utils::domain_is_within_domain(
+            "news.ycombinator.com",
+            "org"
+        ));
+    }
+
+    #[test]
+    fn dotted_domain_is_not_within_domain() {
+        assert!(!utils::domain_is_within_domain(
+            ".ycombinator.com",
+            "ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn different_domain_is_not_within_dotted_domain() {
+        assert!(!utils::domain_is_within_domain(
+            "www.doodleoptimize.com",
+            ".ycombinator.com"
+        ));
+    }
+
+    #[test]
+    fn no_domain_can_be_within_empty_domain() {
+        assert!(!utils::domain_is_within_domain("ycombinator.com", ""));
+    }
+
+    #[test]
+    fn both_can_not_be_empty() {
+        assert!(!utils::domain_is_within_domain("", ""));
+    }
+}

tests/utils/indent.rs

@@ -7,7 +7,7 @@
 
 #[cfg(test)]
 mod passing {
-    use crate::utils;
+    use monolith::utils;
 
     #[test]
     fn zero() {
@@ -28,4 +28,9 @@ mod passing {
     fn three() {
         assert_eq!(utils::indent(3), "   ");
     }
+
+    #[test]
+    fn four() {
+        assert_eq!(utils::indent(4), "    ");
+    }
 }

tests/utils/mod.rs

@@ -1,3 +1,5 @@
 mod detect_media_type;
+mod domain_is_within_domain;
 mod indent;
+mod parse_content_type;
 mod retrieve_asset;

tests/utils/parse_content_type.rs

@@ -0,0 +1,86 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use monolith::utils;
+
+    #[test]
+    fn text_plain_utf8() {
+        let (media_type, charset, is_base64) = utils::parse_content_type("text/plain;charset=utf8");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "utf8");
+        assert!(!is_base64);
+    }
+
+    #[test]
+    fn text_plain_utf8_spaces() {
+        let (media_type, charset, is_base64) =
+            utils::parse_content_type(" text/plain ; charset=utf8 ");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "utf8");
+        assert!(!is_base64);
+    }
+
+    #[test]
+    fn empty() {
+        let (media_type, charset, is_base64) = utils::parse_content_type("");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "US-ASCII");
+        assert!(!is_base64);
+    }
+
+    #[test]
+    fn base64() {
+        let (media_type, charset, is_base64) = utils::parse_content_type(";base64");
+        assert_eq!(media_type, "text/plain");
+        assert_eq!(charset, "US-ASCII");
+        assert!(is_base64);
+    }
+
+    #[test]
+    fn text_html_base64() {
+        let (media_type, charset, is_base64) = utils::parse_content_type("text/html;base64");
+        assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "US-ASCII");
+        assert!(is_base64);
+    }
+
+    #[test]
+    fn only_media_type() {
+        let (media_type, charset, is_base64) = utils::parse_content_type("text/html");
+        assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "US-ASCII");
+        assert!(!is_base64);
+    }
+
+    #[test]
+    fn only_media_type_colon() {
+        let (media_type, charset, is_base64) = utils::parse_content_type("text/html;");
+        assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "US-ASCII");
+        assert!(!is_base64);
+    }
+
+    #[test]
+    fn media_type_gb2312_filename() {
+        let (media_type, charset, is_base64) =
+            utils::parse_content_type("text/html;charset=GB2312;filename=index.html");
+        assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "GB2312");
+        assert!(!is_base64);
+    }
+
+    #[test]
+    fn media_type_filename_gb2312() {
+        let (media_type, charset, is_base64) =
+            utils::parse_content_type("text/html;filename=index.html;charset=GB2312");
+        assert_eq!(media_type, "text/html");
+        assert_eq!(charset, "GB2312");
+        assert!(!is_base64);
+    }
+}

tests/utils/retrieve_asset.rs

@@ -8,12 +8,13 @@
 #[cfg(test)]
 mod passing {
     use reqwest::blocking::Client;
+    use reqwest::Url;
     use std::collections::HashMap;
     use std::env;
 
-    use crate::opts::Options;
-    use crate::url;
-    use crate::utils;
+    use monolith::opts::Options;
+    use monolith::url;
+    use monolith::utils;
 
     #[test]
     fn read_data_url() {
@@ -25,24 +26,25 @@ mod passing {
 
         // If both source and target are data URLs,
         //  ensure the result contains target data URL
-        let (data, final_url, media_type) = utils::retrieve_asset(
+        let (data, final_url, media_type, charset) = utils::retrieve_asset(
             cache,
             &client,
-            "data:text/html;base64,c291cmNl",
-            "data:text/html;base64,dGFyZ2V0",
+            &Url::parse("data:text/html;base64,c291cmNl").unwrap(),
+            &Url::parse("data:text/html;base64,dGFyZ2V0").unwrap(),
             &options,
             0,
         )
         .unwrap();
+        assert_eq!(&media_type, "text/html");
+        assert_eq!(&charset, "US-ASCII");
         assert_eq!(
-            url::data_to_data_url(&media_type, &data, &final_url),
-            url::data_to_data_url("text/html", "target".as_bytes(), "")
+            url::create_data_url(&media_type, &charset, &data, &final_url),
+            Url::parse("data:text/html;base64,dGFyZ2V0").unwrap(),
         );
         assert_eq!(
             final_url,
-            url::data_to_data_url("text/html", "target".as_bytes(), "")
+            Url::parse("data:text/html;base64,dGFyZ2V0").unwrap(),
         );
-        assert_eq!(&media_type, "text/html");
     }
 
     #[test]
@@ -57,31 +59,36 @@ mod passing {
 
         // Inclusion of local assets from local sources should be allowed
         let cwd = env::current_dir().unwrap();
-        let (data, final_url, _media_type) = utils::retrieve_asset(
+        let (data, final_url, media_type, charset) = utils::retrieve_asset(
             cache,
             &client,
-            &format!(
-                "{file}{cwd}/src/tests/data/basic/local-file.html",
+            &Url::parse(&format!(
+                "{file}{cwd}/tests/_data_/basic/local-file.html",
                 file = file_url_protocol,
                 cwd = cwd.to_str().unwrap()
-            ),
-            &format!(
-                "{file}{cwd}/src/tests/data/basic/local-script.js",
+            ))
+            .unwrap(),
+            &Url::parse(&format!(
+                "{file}{cwd}/tests/_data_/basic/local-script.js",
                 file = file_url_protocol,
                 cwd = cwd.to_str().unwrap()
-            ),
+            ))
+            .unwrap(),
             &options,
             0,
         )
         .unwrap();
-        assert_eq!(url::data_to_data_url("application/javascript", &data, &final_url), "data:application/javascript;base64,ZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPSAiZ3JlZW4iOwpkb2N1bWVudC5ib2R5LnN0eWxlLmNvbG9yID0gInJlZCI7Cg==");
+        assert_eq!(&media_type, "application/javascript");
+        assert_eq!(&charset, "");
+        assert_eq!(url::create_data_url(&media_type, &charset, &data, &final_url), Url::parse("data:application/javascript;base64,ZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPSAiZ3JlZW4iOwpkb2N1bWVudC5ib2R5LnN0eWxlLmNvbG9yID0gInJlZCI7Cg==").unwrap());
         assert_eq!(
-            &final_url,
-            &format!(
-                "{file}{cwd}/src/tests/data/basic/local-script.js",
+            final_url,
+            Url::parse(&format!(
+                "{file}{cwd}/tests/_data_/basic/local-script.js",
                 file = file_url_protocol,
                 cwd = cwd.to_str().unwrap()
-            )
+            ))
+            .unwrap()
         );
     }
 }
@@ -96,10 +103,11 @@ mod passing {
 #[cfg(test)]
 mod failing {
     use reqwest::blocking::Client;
+    use reqwest::Url;
     use std::collections::HashMap;
 
-    use crate::opts::Options;
-    use crate::utils;
+    use monolith::opts::Options;
+    use monolith::utils;
 
     #[test]
     fn read_local_file_with_data_url_parent() {
@@ -113,8 +121,8 @@ mod failing {
         match utils::retrieve_asset(
             cache,
             &client,
-            "data:text/html;base64,SoUrCe",
-            "file:///etc/passwd",
+            &Url::parse("data:text/html;base64,SoUrCe").unwrap(),
+            &Url::parse("file:///etc/passwd").unwrap(),
             &options,
             0,
         ) {
@@ -139,8 +147,8 @@ mod failing {
         match utils::retrieve_asset(
             cache,
             &client,
-            "https://kernel.org/",
-            "file:///etc/passwd",
+            &Url::parse("https://kernel.org/").unwrap(),
+            &Url::parse("file:///etc/passwd").unwrap(),
             &options,
             0,
         ) {