mirror of
https://github.com/alexanderepstein/Bash-Snippets
synced 2018-11-08 02:59:35 +01:00
230 lines
7.5 KiB
Bash
Executable file
230 lines
7.5 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Author: Linyos Torovoltos github.com/linyostorovovoltos
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currentVersion="1.22.0"
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multiline="0" # flag that indicates multiline option
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fileoutput="0" # flag indicating the -f option
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## This function determines which http get tool the system has installed and returns an error if there isnt one
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getConfiguredClient()
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{
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if command -v curl &>/dev/null; then
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configuredClient="curl"
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elif command -v wget &>/dev/null; then
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configuredClient="wget"
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elif command -v http &>/dev/null; then
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configuredClient="httpie"
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elif command -v fetch &>/dev/null; then
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configuredClient="fetch"
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else
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echo "Error: This tool reqires either curl, wget, httpie or fetch to be installed." >&2
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return 1
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fi
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}
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## Allows to call the users configured client without if statements everywhere
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httpGet()
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{
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case "$configuredClient" in
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curl) curl -A curl -s "$@" ;;
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wget) wget -qO- "$@" ;;
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httpie) http -b GET "$@" ;;
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fetch) fetch -q "$@" ;;
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esac
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}
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update()
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{
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# Author: Alexander Epstein https://github.com/alexanderepstein
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# Update utility version 2.2.0
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# To test the tool enter in the defualt values that are in the examples for each variable
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repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
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githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
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nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
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latestVersion=$(httpGet https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option
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if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]]; then
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echo "Error: update utility has not been configured correctly." >&2
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exit 1
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elif [[ $latestVersion == "" ]]; then
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echo "Error: no active internet connection" >&2
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exit 1
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else
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if [[ "$latestVersion" != "$currentVersion" ]]; then
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echo "Version $latestVersion available"
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echo -n "Do you wish to update $repositoryName [Y/n]: "
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read -r answer
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if [[ "$answer" == [Yy] ]]; then
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cd ~ || { echo 'Update Failed'; exit 1; }
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if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
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echo -n "Downloading latest version of: $repositoryName."
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git clone -q "https://github.com/$githubUserName/$repositoryName" && touch .BSnippetsHiddenFile || { echo "Failure!"; exit 1; } &
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while [ ! -f .BSnippetsHiddenFile ]; do { echo -n "."; sleep 2; };done
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rm -f .BSnippetsHiddenFile
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echo "Success!"
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cd $repositoryName || { echo 'Update Failed'; exit 1; }
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git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit."
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chmod a+x install.sh #this might be necessary in your case but wasnt in mine.
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./$nameOfInstallFile "update" || exit 1
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cd ..
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rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; }
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else
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exit 1
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fi
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else
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echo "$repositoryName is already the latest version"
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fi
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fi
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}
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makeqr()
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{
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input=$(echo $input | sed s/" "/%20/g ) ## replace all spaces in the sentence with HTML-encoded space %20
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httpGet qrenco.de/$input ## get a response for the qrcode
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}
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# redirects the image obtained from the goqr api into a png file
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makeQRFile() {
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input=$(echo "$input" | sed -e s/" "/%20/g -e s/'\\n'/%0A/g ) ##same as in the makeqr function
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addFileExt
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httpGet "api.qrserver.com/v1/create-qr-code/?size=150x150&data=$input" > "$fileName"
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}
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addFileExt() {
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if ! echo "$fileName" | grep -E -q ".*\.png$|.*\.PNG$"
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then
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fileName="$fileName.png"
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fi
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}
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makeMultiLineQr()
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{
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if [[ ${configuredClient} != "curl" ]]; then ## prevent usage without curl it is unreliable
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echo "Multiline currently only supports curl!"
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return 1
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else
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input=$(echo "$input" | sed -e s/" "/%20/g -e s/'\\n'/%0A/g ) ##same as in the makeqr function
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printf "%s" "$input" | curl -F-=\<- qrenco.de
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fi
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}
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# Function to get the json response from POST request
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decodeQR() {
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local qrFile="$1"
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if ! echo "$fileName" | grep -E -q ".*\.png$|.*\.PNG$|.*\.gif$|.*\.jpg$|.*\.jpeg$|.*\.GIF$|.*\.JPG$|.*\.JPEG$"
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then
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exit 1
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fi
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# only uses curl
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# Cannot use wget because it does not support multipart/form-data (as per the man page)]
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case "$configuredClient" in
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curl) JSONresponse=$(curl -s -F "file=@$qrFile" http://api.qrserver.com/v1/read-qr-code/) || exit 1;;
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wget) echo "Error:-Not supported with wget" >&2 && exit 1;;
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httpie) JSONresponse=$(http -b --form POST http://api.qrserver.com/v1/read-qr-code/ file@"$qrFile") || exit 1;;
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fetch) echo "Error:-Not supported with wget" >&2 && exit 1;;
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esac
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error=$(echo "$JSONresponse" | python -c 'import sys, json; print json.load(sys.stdin)[0]["symbol"][0]["error"]')
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if [ "$error" = "None" ]
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then
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data=$(echo "$JSONresponse" | python -c 'import sys, json; print json.load(sys.stdin)[0]["symbol"][0]["data"]')
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else
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echo "Error:-$error" >&2 && exit 1
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fi
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}
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checkInternet()
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{
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httpGet github.com > /dev/null 2>&1 || { echo "Error: no active internet connection" >&2; return 1; } # query github with a get request
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}
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usage()
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{
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cat <<EOF
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Qrify
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Description: Converts strings or URLs into a QR code.
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Usage: qrify [stringtoturnintoqrcode]
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-u Update Bash-Snippet Tools
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-m Enable multiline support (feature not working yet)
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-h Show the help
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-v Get the tool version
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-f Store the QR code as a PNG file
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-d Decode the QR code from a PNG/GIF/JP(E)G file
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Examples:
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qrify this is a test string
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qrify -m two\\\\nlines
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qrify github.com (no http:// or https://)
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qrify -f fileoutputName google.com
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qrify -d fileName.png
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EOF
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}
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getConfiguredClient || exit 1
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while getopts "d:f:m:hvu*:" option
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do
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case "${option}" in
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v) echo "Version $currentVersion" && exit 0 ;;
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u) checkInternet && update && exit 0 || exit 1 ;;
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h) usage && exit 0 ;;
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m) multiline="1" && echo "Error this is not a supported feature yet" && exit 1 ;;
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f)
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fileName=$OPTARG
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#file name is the first argument of the option -f
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fileoutput="1";;
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d)
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fileName=$OPTARG
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decode="1";;
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esac
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done
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if [[ $# == "0" ]]; then
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usage
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exit 0
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elif [[ $# == "1" ]];then
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if [[ $1 == "help" || $1 == ":help" ]]; then
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usage
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exit 0
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elif [[ $1 == "update" ]]; then
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checkInternet || exit 1
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update || exit 1
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exit 0
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else
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checkInternet || exit 1
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input=$(printf '%s ' "$@")
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makeqr || exit 1
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exit 0
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fi
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else
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if [[ $fileoutput == "1" ]]
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then
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checkInternet || exit 1
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input=$(printf '%s ' "${@:3}") # first arg is -f, second is the file name, third onwards is the rest of the argument
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# will have to be changed when implementing multiline QR code
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makeQRFile || exit 1
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exit 0
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elif [[ $decode == "1" ]]
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then
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checkInternet || exit 1
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( decodeQR "$fileName" && echo "$data" ) || exit 1
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exit 0
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elif [[ $multiline == "0" ]]; then
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checkInternet || exit 1
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input=$(printf '%s ' "$@")
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makeqr || exit 1
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exit 0
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else
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checkInternet || exit 1
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input=$(printf '%s ' "${@:2}")
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makeMultiLineQr || exit 1 ## if multiline that means a flag existed so start from the second argument
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exit 0
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fi
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fi
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