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94 lines
2.1 KiB
94 lines
2.1 KiB
3 years ago
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#!/bin/bash
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# Author: Tasos Latsas
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# spinner.sh
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#
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# Display an awesome 'spinner' while running your long shell commands
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#
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# Do *NOT* call _spinner function directly.
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# Use {start,stop}_spinner wrapper functions
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# usage:
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# 1. source this script in your's
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# 2. start the spinner:
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# start_spinner [display-message-here]
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# 3. run your command
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# 4. stop the spinner:
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# stop_spinner [your command's exit status]
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#
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# Also see: test.sh
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function _spinner() {
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# $1 start/stop
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#
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# on start: $2 display message
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# on stop : $2 process exit status
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# $3 spinner function pid (supplied from stop_spinner)
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local on_success="DONE"
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local on_fail="FAIL"
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local white="\e[1;37m"
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local green="\e[1;32m"
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local red="\e[1;31m"
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local nc="\e[0m"
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case $1 in
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start)
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# calculate the column where spinner and status msg will be displayed
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let column=$(tput cols)-${#2}-8
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# display message and position the cursor in $column column
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echo -ne ${2}
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printf "%${column}s"
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# start spinner
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i=1
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sp='\|/-'
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delay=${SPINNER_DELAY:-0.15}
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while :
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do
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printf "\b${sp:i++%${#sp}:1}"
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sleep $delay
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done
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;;
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stop)
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if [[ -z ${3} ]]; then
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echo "spinner is not running.."
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exit 1
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fi
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kill $3 > /dev/null 2>&1
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# inform the user uppon success or failure
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echo -en "\b["
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if [[ $2 -eq 0 ]]; then
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echo -en "${green}${on_success}${nc}"
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else
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echo -en "${red}${on_fail}${nc}"
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fi
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echo -e "]"
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;;
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*)
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echo "invalid argument, try {start/stop}"
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exit 1
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;;
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esac
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}
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function start_spinner {
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# $1 : msg to display
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_spinner "start" "${1}" &
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# set global spinner pid
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_sp_pid=$!
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disown
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}
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function stop_spinner {
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# $1 : command exit status
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_spinner "stop" $1 $_sp_pid
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unset _sp_pid
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}
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