mirror of
https://github.com/alexanderepstein/Bash-Snippets
synced 2018-11-08 02:59:35 +01:00
227 lines
6.0 KiB
Bash
Executable File
227 lines
6.0 KiB
Bash
Executable File
#!/bin/bash
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# Author: Alexander Epstein https://github.com/alexanderepstein
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currentVersion="1.7.0"
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configuredClient=""
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search="0"
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insensitive=""
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recursive=""
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boundry=""
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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 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, or fetch to be installed."
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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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fetch) fetch -o "...";;
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esac
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}
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checkInternet()
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{
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echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1 # query google with a get request
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if [ $? -eq 0 ]; then #check if the output is 0, if so no errors have occured and we have connected to google successfully
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return 0
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else
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echo "Error: no active internet connection" >&2 #sent to stderr
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return 1
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fi
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}
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update()
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{
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# Author: Alexander Epstein https://github.com/alexanderepstein
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# Update utility version 1.2.0
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# To test the tool enter in the defualt values that are in the examples for each variable
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repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
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githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
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nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
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latestVersion=$(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" == "Y" || "$answer" == "y" ]] ;then
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cd ~ || { echo 'Update Failed' ; exit 1 ; }
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if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
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git clone "https://github.com/$githubUserName/$repositoryName" || { echo "Couldn't download latest version" ; exit 1; }
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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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usage()
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{
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echo "Cheat tool"
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echo "Usage: cheat [flags] [command] or cheat [flags] [programming language] [subject]"
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echo " -s Does a search for last argument rather than looking for exact match"
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echo " -i Case insensitive search"
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echo " -b Word boundaries in search"
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echo " -r Recursive search"
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echo " -u Update Bash-Snippet Tools"
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echo " -h Show the help"
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echo " -v Get the tool version"
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echo "Special Pages:"
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echo " hello Describes building the hello world program written in the language"
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echo " list This lists all cheatsheets related to previous arg if none it lists all cheatsheets"
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echo " learn Shows a learn-x-in-minutes language cheat sheet perfect for getting started with the language"
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echo " 1line A collection of one-liners in this language"
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echo " weirdness A collection of examples of weird things in this language"
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}
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getCheatSheet()
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{
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if [[ $# == 1 ]]; then
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if [[ $search == "1" ]];then
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link=cheat.sh/~$1
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else
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link=cheat.sh/$1
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fi
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else
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link=cheat.sh/$1
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fi
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if [[ $# == 2 ]];then
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if [[ $search == "1" ]];then
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link+=/~$2
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else
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link+=/$2
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fi
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fi
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if [[ $insensitive != "" || $recursive != "" || $boundry != "" ]];then link+=/$boundry$insensitive$recursive; fi
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httpGet $link
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}
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checkSpecialPage()
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{
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temp=$1
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if [[ $1 == "list" ]];then
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temp=":list"
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elif [[ $1 == "learn" ]];then
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temp=":list"
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elif [[ $1 == "styles" ]];then
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temp=":styles"
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fi
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if [[ $2 == "1" ]];then
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arg1=$temp
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else
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arg2=$temp
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fi
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}
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getConfiguredClient || exit 1
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checkInternet || exit 1
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while getopts "ribuvhis" opt; do
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case $opt in
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\?)
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echo "Invalid option: -$OPTARG" >&2
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exit 1
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;;
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h)
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usage
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exit 0
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;;
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v)
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echo "Version $currentVersion"
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exit 0
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;;
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u)
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update
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exit 0
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;;
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i)
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insensitive="i"
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search="1"
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;;
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b)
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boundry="b"
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search="1"
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;;
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r)
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recursive="r"
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search="1"
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;;
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s)
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search="1"
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;;
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:)
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echo "Option -$OPTARG requires an argument." >&2
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exit 1
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;;
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esac
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done
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for arg
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do
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if [[ $arg != "-r" && $arg != "-s" && $arg != "-b" && $arg != "-i" ]];then
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if [ -z ${arg1+x} ];then
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arg1=$arg
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fi
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if [ ! -z ${arg1+x} ];then
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arg2=$arg
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fi
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fi
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done
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checkSpecialPage $arg1 1
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checkSpecialPage $arg2 2
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if [[ $# == 0 ]]; then
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usage
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exit 0
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elif [[ $1 == "update" ]];then
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update
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exit 0
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elif [[ $1 == "help" || $1 == ":help" ]];then
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usage
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exit 0
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else
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if [[ $arg1 != $arg2 ]];then
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getCheatSheet $arg1 $arg2
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else
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getCheatSheet $arg1
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fi
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exit 0
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fi
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