mirror of
https://github.com/alexanderepstein/Bash-Snippets
synced 2018-11-08 02:59:35 +01:00
222 lines
6.8 KiB
Bash
Executable file
222 lines
6.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Author: Alexander Epstein https://github.com/alexanderepstein
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flag=""
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currentVersion="1.13.2"
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configuredClient=""
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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- "$@";;
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fetch) fetch -o "...";;
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esac
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}
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update()
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{
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# Author: Alexander Epstein https://github.com/alexanderepstein
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# Update utility version 1.2.0
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# To test the tool enter in the defualt values that are in the examples for each variable
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repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
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githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
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nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
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latestVersion=$(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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addTask()
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{
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if [ ! -f ~/.todo/list.txt ]; then
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if [ ! -d ~/.todo ];then mkdir ~/.todo;fi
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touch ~/.todo/list.txt
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fi
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echo "$1 ; $(date)" >> ~/.todo/list.txt
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}
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checkInternet()
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{
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httpGet google.com > /dev/null 2>&1 || { echo "Error: no active internet connection" >&2; return 1; } # query google with a get request
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}
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removeTask()
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{
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touch ~/.todo/temp.txt
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oldTaskNumber=$1
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taskNumber=$( echo $1 | grep -Eo "[0-9]*" )
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if [[ $taskNumber == "" || $oldTaskNumber != $taskNumber ]];then echo "Error: $oldTaskNumber is not a valid task number!" && return 1 ;fi
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count="1"
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IFS=$'\n' # make newlines the only separator
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for task in $(cat ~/.todo/list.txt)
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do
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if [[ $count != $taskNumber ]];then
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echo "$task" >> ~/.todo/temp.txt;fi
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count=$(echo $count + 1 | bc)
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done
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rm -f ~/.todo/list.txt
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cp ~/.todo/temp.txt ~/.todo/list.txt
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rm -f ~/.todo/temp.txt
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if [ $count -lt $taskNumber ];then echo "Error: task number $taskNumber does not exist!" && return 1
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else echo "Sucessfully removed task number $taskNumber";fi
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}
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getTasks()
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{
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if [ -f ~/.todo/list.txt ]; then
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checkEmpty=$(cat ~/.todo/list.txt)
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if [[ $checkEmpty == "" ]];then echo "No tasks found";
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else
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count="1"
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IFS=$'\n' # make newlines the only separator
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for task in $(cat ~/.todo/list.txt)
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do
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if [ $count -lt 10 ];then count="0$count";fi
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echo "$count). $task" >> ~/.todo/getTemp.txt
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count=$(echo $count + 1 | bc)
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done
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cat ~/.todo/getTemp.txt | column -t -s ";"
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rm -f ~/.todo/getTemp.txt
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fi
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else
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echo "No tasks found"
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fi
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}
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usage()
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{
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echo "Todo"
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echo "Description: A simplistic commandline todo list."
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echo "Usage: todo [flags] or todo [flags] [arguments]"
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echo " -c Clear all the current tasks"
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echo " -r Remove the following task number"
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echo " -g Get the current tasks"
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echo " -a Add the following task"
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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 "Examples:"
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echo " todo -a My very first task"
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echo " todo -r 1"
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echo " todo -g"
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echo " todo -c"
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}
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clearAllTasks()
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{
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rm -f ~/.todo/list.txt || return 1
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touch ~/.todo/list.txt || return 1
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echo "Tasks cleared."
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}
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while getopts "cr:a:guvh" 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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c)
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if [[ $flag == "" ]];then flag="clear"
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else echo "Error: all flags are mutually exclusive" && exit 1;fi
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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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g)
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if [[ $flag == "" ]];then flag="get"
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else echo "Error: all flags are mutually exclusive" && exit 1;fi
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;;
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r)
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if [[ $flag == "" ]];then flag="remove"
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else echo "Error: all flags are mutually exclusive" && exit 1;fi
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;;
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a)
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if [[ $flag == "" ]];then flag="add"
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else echo "Error: all flags are mutually exclusive" && exit 1;fi
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;;
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u)
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getConfiguredClient || exit 1
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checkInternet || exit 1
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update
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exit 0
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;;
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:)
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echo "Option -$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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if [[ $# == "0" ]]; then
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usage
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elif [[ $# == "1" ]];then
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if [[ $1 == "clear" ]];then
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clearAllTasks || exit 1
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elif [[ $1 == "update" ]]; then
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getConfiguredClient || exit 1
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checkInternet || exit 1
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update || exit 1
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exit 0
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elif [[ $1 == "help" ]]; then
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usage
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exit 0
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elif [[ $flag == "clear" || $1 == "clear" ]];then clearAllTasks || exit 1
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elif [[ $flag == "get" || $1 == "list" || $1 == "get" ]];then getTasks || exit 1
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fi
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else
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if [[ $flag == "add" || $1 == "add" ]];then addTask "${*:2}" && getTasks|| exit 1
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elif [[ $flag == "remove" || $1 == "remove" ]];then removeTask $2 || exit 1
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else usage;fi
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fi
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