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todo
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todo
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#!/usr/bin/env bash
# Author: Alexander Epstein https://github.com/alexanderepstein
flag=""
currentVersion="1.19.0"
configuredClient=""
## This function determines which http get tool the system has installed and returns an error if there isnt one
getConfiguredClient()
{
if command -v curl &>/dev/null; then
configuredClient="curl"
elif command -v wget &>/dev/null; then
configuredClient="wget"
elif command -v http &>/dev/null; then
configuredClient="httpie"
elif command -v fetch &>/dev/null; then
configuredClient="fetch"
else
echo "Error: This tool reqires either curl, wget, httpie or fetch to be installed." >&2
return 1
fi
}
## Allows to call the users configured client without if statements everywhere
httpGet()
{
case "$configuredClient" in
curl) curl -A curl -s "$@" ;;
wget) wget -qO- "$@" ;;
httpie) http -b GET "$@" ;;
fetch) fetch -q "$@" ;;
esac
}
update()
{
# Author: Alexander Epstein https://github.com/alexanderepstein
# Update utility version 2.2.0
# To test the tool enter in the defualt values that are in the examples for each variable
repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
latestVersion=$(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
if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]]; then
echo "Error: update utility has not been configured correctly." >&2
exit 1
elif [[ $latestVersion == "" ]]; then
echo "Error: no active internet connection" >&2
exit 1
else
if [[ "$latestVersion" != "$currentVersion" ]]; then
echo "Version $latestVersion available"
echo -n "Do you wish to update $repositoryName [Y/n]: "
read -r answer
if [[ "$answer" == [Yy] ]]; then
cd ~ || { echo 'Update Failed'; exit 1; }
if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
echo -n "Downloading latest version of: $repositoryName."
git clone -q "https://github.com/$githubUserName/$repositoryName" && touch .BSnippetsHiddenFile || { echo "Failure!"; exit 1; } &
while [ ! -f .BSnippetsHiddenFile ]; do { echo -n "."; sleep 2; };done
rm -f .BSnippetsHiddenFile
echo "Success!"
cd $repositoryName || { echo 'Update Failed'; exit 1; }
git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit."
chmod a+x install.sh #this might be necessary in your case but wasnt in mine.
./$nameOfInstallFile "update" || exit 1
cd ..
rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; }
else
exit 1
fi
else
echo "$repositoryName is already the latest version"
fi
fi
}
addTask()
{
if [ ! -f ~/.todo/list.txt ]; then
if [ ! -d ~/.todo ]; then mkdir ~/.todo; fi
touch ~/.todo/list.txt
fi
echo "$1 ; $(date)" >> ~/.todo/list.txt
}
checkInternet()
{
httpGet github.com > /dev/null 2>&1 || { echo "Error: no active internet connection" >&2; return 1; } # query github with a get request
}
removeTask()
{
## Check for valid task numbers (valid characters)
if [ -f ~/.todo/temp.txt ];then rm -f ~/.todo/temp.txt;fi
touch ~/.todo/temp.txt
for taskToRemove in "$@";do
oldTaskNumber=$taskToRemove
taskNumber=$( echo $taskToRemove | grep -Eo "[0-9]*" )
if [[ $taskNumber == "" || $oldTaskNumber != $taskNumber ]]; then echo "Error: $oldTaskNumber is not a valid task number!" && return 1; fi
done
count="0"
IFS=$'\n' # make newlines the only separator
## Removing the task (only don't add to temp if we should remove it)
for task in $(cat ~/.todo/list.txt); do
removeIt="false"
for taskToRemove in "$@";do
if [[ $(($count + 1)) == "$taskToRemove" ]]; then
removeIt="true"
break
fi
done
if ! $removeIt ;then echo "$task" >> ~/.todo/temp.txt;fi
count=$(( $count + 1 ))
done
rm -f ~/.todo/list.txt
cp ~/.todo/temp.txt ~/.todo/list.txt
rm -f ~/.todo/temp.txt
##Checking if the task exists
for taskToRemove in "$@" ;do
if [ $count -lt $taskToRemove ]; then
echo "Error: task number $taskToRemove does not exist!"
else
echo "Sucessfully removed task number $taskToRemove"
fi
done
}
getTasks()
{
if [ -f ~/.todo/list.txt ]; then
checkEmpty=$(cat ~/.todo/list.txt)
if [[ $checkEmpty == "" ]]; then
echo "No tasks found"
else
count="1"
IFS=$'\n' # make newlines the only separator
for task in $(cat ~/.todo/list.txt); do
tempTask=$count
if [ $count -lt 10 ]; then tempTask="0$count"; fi
echo "$tempTask). $task" >> ~/.todo/getTemp.txt
count=$(( $count + 1 ))
done
cat ~/.todo/getTemp.txt | column -t -s ";"
rm -f ~/.todo/getTemp.txt
fi
else
echo "No tasks found"
fi
}
usage()
{
cat <<EOF
Todo
Description: A simplistic commandline todo list.
Usage: todo [flags] or todo [flags] [arguments]
-c Clear all the current tasks
Can also use clear instead of -c
-r Remove the following task numbers seprated by spaces
Can also use remove instead of -r
-g Get the current tasks
Can also use list instead of -g
-a Add the following task
Can also use add instead of -a
-u Update Bash-Snippet Tools
-h Show the help
-v Get the tool version
Examples:
todo -a My very first task
todo remove 2
todo -r 1 3
todo add Another Task
todo list
todo -g
todo -c
todo clear
EOF
}
clearAllTasks()
{
rm -f ~/.todo/list.txt || return 1
touch ~/.todo/list.txt || return 1
echo "Tasks cleared."
}
while getopts "cr:a:guvh" opt; do
case "$opt" in
\?) echo "Invalid option: -$OPTARG" >&2
exit 1
;;
c) if [[ $flag == "" ]]; then
flag="clear"
else
echo "Error: all flags are mutually exclusive"
exit 1
fi
;;
h) usage
exit 0
;;
v) echo "Version $currentVersion"
exit 0
;;
g) if [[ $flag == "" ]]; then
flag="get"
else
echo "Error: all flags are mutually exclusive"
exit 1
fi
;;
r) if [[ $flag == "" ]]; then
flag="remove"
else
echo "Error: all flags are mutually exclusive"
exit 1
fi
;;
a) if [[ $flag == "" ]]; then
flag="add"
else
echo "Error: all flags are mutually exclusive"
exit 1
fi
;;
u) getConfiguredClient || exit 1
checkInternet || exit 1
update
exit 0
;;
:) echo "Option -$OPTARG requires an argument." >&2
exit 1
;;
esac
done
if [[ $# == "0" ]]; then
usage
elif [[ $# == "1" ]]; then
if [[ $1 == "clear" ]]; then
clearAllTasks || exit 1
elif [[ $1 == "update" ]]; then
getConfiguredClient || exit 1
checkInternet || exit 1
update || exit 1
exit 0
elif [[ $1 == "help" ]]; then
usage
exit 0
elif [[ $flag == "clear" || $1 == "clear" ]]; then clearAllTasks || exit 1
elif [[ $flag == "get" || $1 == "list" || $1 == "get" ]]; then getTasks || exit 1
else { echo "Error: the argument $1 is not valid"; exit 1; }; fi
else
if [[ $flag == "add" || $1 == "add" ]]; then addTask "${*:2}" && getTasks || exit 1
elif [[ $flag == "remove" || $1 == "remove" ]]; then removeTask ${*:2} && getTasks || exit 1
else { usage; exit 1; }; fi
fi