Move Commands stuff out of classes

The classes/ subdir is primarily for the DB_DataObject classes. Stuff
in there can get stomped by various generation scripts.

I've moved the lurkers there -- related to command-handling -- to
lib/. Since auto-loading works fine with lib/, there shouldn't be much
of a visible change here.

1 files changed, 198 insertions, 0 deletions

diff --git a/lib/commandinterpreter.php b/lib/commandinterpreter.php
new file mode 100644
index 000000000..0679f5462
--- /dev/null
+++ b/lib/commandinterpreter.php
@@ -0,0 +1,198 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, 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('LACONICA')) { exit(1); }
+
+require_once(INSTALLDIR.'/classes/Command.php');
+
+class CommandInterpreter
+{
+
+    function handle_command($user, $text)
+    {
+        # XXX: localise
+
+        $text = preg_replace('/\s+/', ' ', trim($text));
+        list($cmd, $arg) = explode(' ', $text, 2);
+
+        # We try to support all the same commands as Twitter, see
+        # http://getsatisfaction.com/twitter/topics/what_are_the_twitter_commands
+        # There are a few compatibility commands from earlier versions of
+        # Laconica
+
+        switch(strtolower($cmd)) {
+         case 'help':
+            if ($arg) {
+                return null;
+            }
+            return new HelpCommand($user);
+         case 'on':
+            if ($arg) {
+                list($other, $extra) = explode(' ', $arg, 2);
+                if ($extra) {
+                    return null;
+                } else {
+                    return new OnCommand($user, $other);
+                }
+            } else {
+                return new OnCommand($user);
+            }
+         case 'off':
+            if ($arg) {
+                list($other, $extra) = explode(' ', $arg, 2);
+                if ($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 'follow':
+         case 'sub':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if ($extra) {
+                return null;
+            } else {
+                return new SubCommand($user, $other);
+            }
+         case 'leave':
+         case 'unsub':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if ($extra) {
+                return null;
+            } else {
+                return new UnsubCommand($user, $other);
+            }
+         case 'get':
+         case 'last':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if ($extra) {
+                return null;
+            } else {
+                return new GetCommand($user, $other);
+            }
+         case 'd':
+         case 'dm':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if (!$extra) {
+                return null;
+            } else {
+                return new MessageCommand($user, $other, $extra);
+            }
+         case 'whois':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if ($extra) {
+                return null;
+            } else {
+                return new WhoisCommand($user, $other);
+            }
+         case 'fav':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if ($extra) {
+                return null;
+            } else {
+                return new FavCommand($user, $other);
+            }
+         case 'nudge':
+            if (!$arg) {
+                return null;
+            }
+            list($other, $extra) = explode(' ', $arg, 2);
+            if ($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) = explode(' ', $arg, 2);
+            if ($extra) {
+                return null;
+            } else {
+                return new InviteCommand($user, $other);
+            }
+         case 'track':
+            if (!$arg) {
+                return null;
+            }
+            list($word, $extra) = explode(' ', $arg, 2);
+            if ($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) = explode(' ', $arg, 2);
+            if ($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;
+        }
+    }
+}
+