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gnome launcher

gnome launcher

The following dcli script creates a gnome launcher. You can use this to launch any dcli script (or any app in general) from the gnome menu.
#! /usr/bin/env dcli
import 'dart:io';
import 'package:dcli/dcli.dart';
String name;
List<String> categories;
bool terminal;
String comment;
String iconPath;
String exePath;
var parser = ArgParser();
///
/// Creates a gnome launcher.
///
void main(List<String> args) {
Settings().setVerbose(enabled: false);
parser.addOption('name',
help: 'Name of the application to be displayed in the gnome menu');
parser.addMultiOption('categories',
defaultsTo: ['Development'],
help:
'Gnome list of categories. Controls where in the gnome menu the entry appears. e.g. \'Development\'');
parser.addOption('terminal',
defaultsTo: 'true',
help:
'If true (the default) then the app is launched in a terminal window.');
parser.addOption('comment', help: 'Adds a comment to the Gnome menu item');
parser.addOption('iconPath', help: 'Path to an icon for the Gnome menu');
parser.addOption('exePath', help: 'Path to an executable to be run');
var parsed = parser.parse(args);
name = getRequiredString(parsed, 'name');
comment = parsed['comment'] as String;
terminal = getBool(parsed, 'terminal');
categories = getList(parsed, 'categories');
iconPath = getPath(parsed, 'iconPath');
exePath = getRequiredPath(parsed, 'exePath');
writeDesktopEntry();
}
String getRequiredPath(ArgResults parsed, String option) {
var path = getRequiredString(parsed, option);
if (!exists(path)) {
print(red('The provided path for $option does not exists.'));
showUsage();
}
return truepath(path);
}
String getPath(ArgResults parsed, String option) {
if (!parsed.wasParsed(option)) {
return null;
}
var path = parsed[option] as String;
if (!exists(path)) {
print(red('The provided path for $option does not exists.'));
showUsage();
}
return truepath(path);
}
String getRequiredString(ArgResults parsed, String option) {
if (!parsed.wasParsed(option)) {
print(red('You must provide the --$option argument'));
showUsage();
}
return parsed[option] as String;
}
bool getRequiredBool(ArgResults parsed, String option) {
if (!parsed.wasParsed(option)) {
print(red('You must provide the --$option argument'));
showUsage();
}
return parsed[option] == 'true';
}
bool getBool(ArgResults parsed, String option) {
return parsed[option] == 'true';
}
List<String> getRequiredList(ArgResults parsed, String option) {
if (!parsed.wasParsed(option)) {
print(red('You must provide the --$option argument'));
showUsage();
}
return parsed[option] as List<String>;
}
List<String> getList(ArgResults parsed, String option) {
return parsed[option] as List<String>;
}
void showUsage() {
print('');
print(green('Usage:'));
print('./add_gnome_laucher.dart [options]');
print(parser.usage);
exit(-1);
}
void writeDesktopEntry() {
var path = join(HOME, '.local', 'share', 'applications',
'${name.replaceAll(RegExp('[^a-zA-Z0-9_]'), '_')}.desktop');
// create desktop.ini
if (exists(path)) {
delete(path);
}
var content = StringBuffer();
content.write('''
[Desktop Entry]
Version=1.0
Type=Application
Name=$name
''');
if (comment != null) content.write('Comment=$comment\n');
content.write('Categories=${categories.join(';')}\n');
content.write('Terminal=$terminal\n');
if (iconPath != null) content.write('Icon=$iconPath\n');
if (terminal) {
content.write('''gnome-terminal -e 'bash -c "$exePath;bash"' ''');
} else {
content.write('Exec=$exePath\n');
}
path.write(content.toString());
print('Created: (in ${truepath(path)})\n');
cat(path);
}
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