mirror of
https://github.com/arkenfox/user.js.git
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100 lines
2.3 KiB
Bash
Executable file
100 lines
2.3 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# ghacks-user.js updater for GNU/Linux and Mac.
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#
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# Copyright (C) 2018 Emanuele Petriglia <inbox@emanuelepetriglia.me>.
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# All right reserved. This file is licensed under the MIT license.
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#
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# Version: 1.4
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#
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# Please read the wiki or run 'updater.sh --help' to get informations about this
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# script.
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# Default values for flags.
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QUIET="false"
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VERBOSE="false"
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FORCE_VERSION="false"
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UPDATED="false"
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# Prints a message to the standard error and exit with error code 1.
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error() {
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echo -e "$@" >&2
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exit 1
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}
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# Prints a message to the standard erorr without terminate execution.
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warn() {
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if [[ "$QUIET" == "false" ]]; then
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echo -e "$@" >&2
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fi
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}
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# Prints a message to the standard output.
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log() {
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if [[ "$VERBOSE" == "true" && "$QUIET" == "false" ]]; then
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echo -e "$@"
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fi
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}
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# Updates the installer script. It set "true" the variable UPDATED if this
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# script is succesfully updated.
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update_installer() {
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local TMPFILE="$(mktemp)"
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local UPDATER_URL="https://raw.githubusercontent.com/ghacksuserjs/ghacks-user.js/master/updater.sh"
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log "Downloading latest updater.sh script to $TMPFILE..."
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wget --quiet --output-document "$TMPFILE" "$UPDATER_URL"
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if [[ "$?" == "0" ]]; then
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log "Updater script succesfully downloaded!"
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UPDATED="true"
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else
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warn "Failed to download the updater script."
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fi
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mv "$TMPFILE" "UPDATER.SH"
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}
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# Prints to the standard output the help message.
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show_help() {
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echo "ciao"
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}
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# Prints to the standard output the version of this script.
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show_version() {
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echo "$PROGRAM version 1.4"
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}
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# Updates the user.js.
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update_userjs() {
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# Run the recenlty downloader version of this script.
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if [[ "$UPDATED" == "true" ]]; then
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source "$PROGRAM" $@
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exit 0
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fi
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}
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# Check if a program is installed. If it is not installed prints an error.
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check_utily() {
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if [[ -z $(command -v "$1") ]]; then
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error "$1 is not installed. Please install it before executing this script"
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fi
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}
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PROGRAM="${0##*/}"
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check_utily "wget"
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check_utily "mktemp"
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case "$1" in
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--update|-u) shift; update_installer "$@";;
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--force-version|-f) shift; FORCE_VERSION="yes";;
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--quiet|-q) shift; QUIET="yes";;
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--verbose) shift; VERBOSE="true";;
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--help|-h) shift; show_help;;
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--version|-v) shift; show_version;;
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esac
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update_userjs
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exit 0
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