summaryrefslogtreecommitdiff
path: root/lib/commandinterpreter.php
blob: c39fafb62bdc87faad7072fdfdd420ce3cf28644 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
<?php
/*
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2008, 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }

require_once INSTALLDIR.'/lib/command.php';

class CommandInterpreter
{
    function handle_command($user, $text)
    {
        # XXX: localise

        $text = preg_replace('/\s+/', ' ', trim($text));
        list($cmd, $arg) = $this->split_arg($text);

        # We try to support all the same commands as Twitter, see
        # http://getsatisfaction.com/twitter/topics/what_are_the_twitter_commands
        # There are a few compatibility commands from earlier versions of
        # StatusNet

        switch(strtolower($cmd)) {
         case 'help':
            if ($arg) {
                return null;
            }
            return new HelpCommand($user);
         case 'login':
            if ($arg) {
                return null;
            } else {
                return new LoginCommand($user);
            }
         case 'subscribers':
            if ($arg) {
                return null;
            } else {
                return new SubscribersCommand($user);
            }
         case 'subscriptions':
            if ($arg) {
                return null;
            } else {
                return new SubscriptionsCommand($user);
            }
         case 'on':
            if ($arg) {
                list($other, $extra) = $this->split_arg($arg);
                if ($extra) {
                    return null;
                } else {
                    return new OnCommand($user, $other);
                }
            } else {
                return new OnCommand($user);
            }
         case 'off':
            if ($arg) {
                list($other, $extra) = $this->split_arg($arg);
                if ($extra) {
                    return null;
                } else {
                    return new OffCommand($user, $other);
                }
            } else {
                return new OffCommand($user);
            }
         case 'stop':
         case 'quit':
            if ($arg) {
                return null;
            } else {
                return new OffCommand($user);
            }
         case 'join':
             if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new JoinCommand($user, $other);
            }
         case 'drop':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new DropCommand($user, $other);
            }
         case 'follow':
         case 'sub':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new SubCommand($user, $other);
            }
         case 'leave':
         case 'unsub':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new UnsubCommand($user, $other);
            }
         case 'get':
         case 'last':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new GetCommand($user, $other);
            }
         case 'd':
         case 'dm':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if (!$extra) {
                return null;
            } else {
                return new MessageCommand($user, $other, $extra);
            }
         case 'r':
         case 'reply':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if (!$extra) {
                return null;
            } else {
                return new ReplyCommand($user, $other, $extra);
            }
         case 'whois':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new WhoisCommand($user, $other);
            }
         case 'fav':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new FavCommand($user, $other);
            }
         case 'nudge':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new NudgeCommand($user, $other);
            }
         case 'stats':
            if ($arg) {
                return null;
            }
            return new StatsCommand($user);
         case 'invite':
            if (!$arg) {
                return null;
            }
            list($other, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else {
                return new InviteCommand($user, $other);
            }
         case 'track':
            if (!$arg) {
                return null;
            }
            list($word, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else if ($word == 'off') {
                return new TrackOffCommand($user);
            } else {
                return new TrackCommand($user, $word);
            }
         case 'untrack':
            if (!$arg) {
                return null;
            }
            list($word, $extra) = $this->split_arg($arg);
            if ($extra) {
                return null;
            } else if ($word == 'all') {
                return new TrackOffCommand($user);
            } else {
                return new UntrackCommand($user, $word);
            }
         case 'tracks':
         case 'tracking':
            if ($arg) {
                return null;
            }
            return new TrackingCommand($user);
         default:
            return false;
        }
    }
    
    /**
     * Split arguments without triggering a PHP notice warning
     */
    function split_arg($text)
    {
        $pieces = explode(' ', $text, 2);
        if (count($pieces) == 1) {
            $pieces[] = null;
        }
        return $pieces;
    }
}