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/*
OptionParser.vala
Copyright (C) 2010 Maia Kozheva <sikon@ubuntu.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
using Gee;
namespace Steadyflow.Core {
public class OptionParser : GLib.Object {
private string[] args;
private Set<string> commands;
public OptionParser (string[] args, bool remove_arg0 = true) {
this.args = remove_arg0 ? args[1:args.length] : args;
this.commands = new HashSet<string> ();
}
public void register_command (string cmd, OptionCommand handler) {
commands.add (cmd);
command[cmd].connect((args, kwargs) => { handler(args, kwargs); });
}
public void run () {
Gee.List<string> arglist = new ArrayList<string> ();
Map<string, string> kwargs = new HashMap<string, string> ();
if (args.length == 0) {
command["@default"] (args, kwargs);
return;
}
string cmd = "@default";
string[] arguments = args;
if (args[0][0] != '-') {
cmd = arguments[0];
arguments = arguments[1:arguments.length];
}
foreach (string arg in arguments) {
if (arg[0] != '-') {
arglist.add (arg);
} else {
string[] keyvalue = arg.split ("=", 2);
kwargs.set (keyvalue[0], keyvalue.length > 1 ? keyvalue[1] : null);
}
}
if (cmd == "@default" || commands.contains (cmd)) {
command[cmd] (arglist.to_array (), kwargs);
} else {
unhandled_command ();
}
}
public delegate void OptionCommand (string[] args, Map<string, string> kwargs);
[Signal (detailed = true)]
private signal void command (string[] args, Map<string, string> kwargs);
public signal void unhandled_command ();
}
}
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