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Improve parsing of command line options

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Emanuele Petriglia 2018-06-16 11:51:23 +02:00
parent d821c49625
commit d215dea5b0
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GPG Key ID: CD2F70AE16A43647
1 changed files with 46 additions and 10 deletions
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updater.sh
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@ -5,17 +5,23 @@
# Copyright (C) 2018 Emanuele Petriglia <inbox@emanuelepetriglia.me>.
# All right reserved. This file is licensed under the MIT license.
#
# Special requirements (beyond Bash): wget and mktemp.
#
# Version: 1.4
#
# Please read the wiki or run 'updater.sh --help' to get informations about this
# script.
#
# Report bugs to https://github.com/ghacksuserjs/ghacks-user.js/issues
readonly VERSION="1.4"
# Default values for flags.
QUIET="false"
VERBOSE="false"
FORCE_VERSION="false"
UPDATED="false"
VERSION="1.4"
# Prints a message to the standard error and exit with error code 1.
error() {
@ -73,6 +79,8 @@ Options:
--help Print this message
--version Print script version
Please run this script from your Firefox profile directory.
Please note that it is not given the option '--force-version' this script will
download the latest version available, that can be unstable.
@ -87,11 +95,12 @@ show_version() {
# Updates the user.js.
update_userjs() {
# Run the recenlty downloader version of this script.
# Run the recently downloader version of this script.
if [[ "$UPDATED" == "true" ]]; then
source "$PROGRAM" $@
exit 0
fi
echo "aggiornato"
}
# Check if a program is installed. If it is not installed prints an error.
@ -106,14 +115,41 @@ PROGRAM="${0##*/}"
check_utily "wget"
check_utily "mktemp"
case "$1" in
--update|-u) shift; update_installer "$@";;
--force-version|-f) shift; FORCE_VERSION="yes";;
--quiet|-q) shift; QUIET="yes";;
--verbose) shift; VERBOSE="true";;
--help|-h) shift; show_help;;
--version|-v) shift; show_version;;
esac
UPDATE_INSTALLER="false"
SHOW_HELP="false"
SHOW_VERSION="false"
# Parse command line options.
while :; do
case "$1" in
--update|-u) shift; UPDATE_INSTALLER="true";;
--force-version|-f) shift; FORCE_VERSION="true";;
--quiet|-q) shift; QUIET="true";;
--verbose) shift; VERBOSE="true";;
--help|-h) shift; SHOW_HELP="true";;
--version|-v) shift; SHOW_VERSION="true";;
"") break;; # Default case: no more options.
*) error "Unrecognized option '$1'";;
esac
done
if [[ "$VERBOSE" == "true" && "$QUIET" == "true" ]]; then
error "You can't use '--verbose' and '--quiet' options together"
fi
if [[ "$SHOW_HELP" == "true" ]]; then
show_help
exit 0
fi
if [[ "$SHOW_VERSION" == "true" ]]; then
show_version
exit 0
fi
if [[ "$UPDATE_INSTALLER" == "true" ]]; then
update_installer
fi
update_userjs