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comments_xml.php

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<?php
/* $Id: comments_xml.php,v 1.1 2003/10/03 15:28:41 mikko Exp $ */
/*
 * ImaComm - a web based photo album software
 * Copyright (C) 2003, Mikko Kokkonen
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

class Comments_XML extends Comments
{
        var $comments;

        function loadComments($file, $for)
        {
                global $settings;
        
                if (is_null($this->minixml))
                {
                        $this->minixml = $settings->attribute("minixml_path");
                }
                require_once ($this->minixml."/minixml.inc.php");

                $doc = new MiniXMLDoc();
                $doc->fromFile($file);
                $root =& $doc->getRoot();

                $comments =& $root->getElement("comments");
                if (!method_exists($comments, "numChildren"))
                {
                        return;
                }
                for ($c = 0; $c < $comments->numChildren(); $c++)
                {
                        $comment =& $comments->xchildren[$c];
                        $foru = trim($comment->attribute("for"));
                        if ($foru != $for && $for != "@all")
                        {
                                continue;
                        }
                        for ($o = 0; $o < count($comment->xchildren); $o++)
                        {
                                $child =& $comment->xchildren[$o];
                                $data[trim($child->name())] = trim($child->text());
                        }
                        $this->comments[] = $data;
                }
        }

        function canAdd($file, $for)
        {
                if (!is_writable($file))
                {
                        return false;
                }
                return true;
        }
        
        function addComment($file, $data)
        {
                global $settings;
                if (is_null($this->minixml))
                {
                        $this->minixml = $settings->attribute("minixml_path");
                }
                require_once ($this->minixml."/minixml.inc.php");
                $doc = new MiniXMLDoc();
                $doc->fromFile($file);
                $root =& $doc->getRoot();
                $comments =& $root->getElement("comments");

                // Load all IDs...
                // And all messages, calculate MD5s, that same msg wont be twice!
                $ids = array();
                for ($c = 0; $c < count($comments->xchildren); $c++)
                {
                        $comment =& $comments->xchildren[$c];
                        $id = $comment->attribute("id");
                        $ids[] = trim($id);
                        $msg =& $comment->getElement("message");
                        $msgs[] = md5(trim($msg->text()));
                }
                if (is_array($msgs))
                {
                        $msgmd5 = md5($data['message']);
                        if (in_array($msgmd5, $msgs))
                        {
                                return MESSAGE_ALREADY_EXISTS;
                        }
                }
                // Calculate a new ID...
                $try = 0;
                while ($try < 5)
                {
                        $id = md5(time());
                        if (!in_array($id, $ids))
                        {
                                $try = 10;
                        }
                        $try++;
                }
                if ($try == 10)
                {
                        return ID_GENERATE_ERROR;
                }
                // We have ID...
                $data['id'] = $id;
                // Create a new children..
                $comment =& $comments->createChild("comment");
                $comment->attribute("for", $data['for']);
                $comment->attribute("id", $data['id']);
                // And the other data...
                $keys = array_keys($data);
                for ($o = 0; $o < count($data); $o++)
                {
                        $var = $keys[$o];
                        if ($var == "id" || $var == "for")
                        {
                                continue;
                        }
                        $child =& $comment->createChild($var);
                        $child->text($data[$var]);
                }
                // And save file...
                $fp = fopen($file, "w");
                if ($fp)
                {
                        fputs($fp, $doc->toString());
                        fclose($fp);
                }
                return COMMENT_ADD_SUCCESS;
        }
}
?>

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