mirror of
https://github.com/alexanderepstein/Bash-Snippets
synced 2018-11-08 02:59:35 +01:00
231 lines
6.9 KiB
Bash
Executable File
231 lines
6.9 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="1.16.0"
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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" == [Yy] ]]; then
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cd ~ || { echo 'Update Failed'; exit 1; }
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if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
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git clone "https://github.com/$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); 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
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echo "Error: task number $taskNumber does not exist!"
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return 1
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else
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echo "Sucessfully removed task number $taskNumber"
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fi
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}
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getTasks()
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{
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if [ -f ~/.todo/list.txt ]; then
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checkEmpty=$(cat ~/.todo/list.txt)
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if [[ $checkEmpty == "" ]]; then
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echo "No tasks found"
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else
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count="1"
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IFS=$'\n' # make newlines the only separator
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for task in $(cat ~/.todo/list.txt); 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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cat <<EOF
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Todo
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Description: A simplistic commandline todo list.
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Usage: todo [flags] or todo [flags] [arguments]
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-c Clear all the current tasks
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-r Remove the following task number
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-g Get the current tasks
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-a Add the following task
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-u Update Bash-Snippet Tools
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-h Show the help
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-v Get the tool version
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Examples:
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todo -a My very first task
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todo -r 1
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todo -g
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todo -c
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EOF
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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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\?) echo "Invalid option: -$OPTARG" >&2
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exit 1
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;;
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c) if [[ $flag == "" ]]; then
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flag="clear"
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else
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echo "Error: all flags are mutually exclusive"
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exit 1
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fi
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;;
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h) usage
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exit 0
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;;
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v) echo "Version $currentVersion"
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exit 0
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;;
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g) if [[ $flag == "" ]]; then
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flag="get"
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else
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echo "Error: all flags are mutually exclusive"
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exit 1
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fi
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;;
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r) if [[ $flag == "" ]]; then
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flag="remove"
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else
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echo "Error: all flags are mutually exclusive"
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exit 1
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fi
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;;
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a) if [[ $flag == "" ]]; then
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flag="add"
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else
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echo "Error: all flags are mutually exclusive"
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exit 1
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fi
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;;
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u) getConfiguredClient || exit 1
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checkInternet || exit 1
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update
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exit 0
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;;
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:) echo "Option -$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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else { echo "Error: the argument $1 is not valid"; exit 1; }; 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; exit 1; }; fi
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fi
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