Библиотека для cis, online, cms1

PHPTAL/Php/Attribute.php

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+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4: */
+//  
+//  Copyright (c) 2004-2005 Laurent Bedubourg
+//  
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//  
+//  This library 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
+//  Lesser General Public License for more details.
+//  
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//  
+//  Authors: Laurent Bedubourg <lbedubourg@motion-twin.com>
+//  
+
+require_once PHPTAL_DIR.'PHPTAL/Dom/Node.php';
+
+/**
+ * Base class for all PHPTAL attributes.
+ *
+ * Attributes are first ordered by PHPTAL then called depending on their
+ * priority before and after the element printing.
+ *
+ * An attribute must implements start() and end().
+ * 
+ * @package phptal.php
+ * @author Laurent Bedubourg <lbedubourg@motion-twin.com>
+ */
+abstract class PHPTAL_Php_Attribute 
+{
+    const ECHO_TEXT = 'text';
+    const ECHO_STRUCTURE = 'structure';
+    
+    /** Attribute name (ie: 'tal:content'). */
+    public $name;
+    /** Attribute value specified by the element. */
+    public $expression;
+    /** Element using this attribute (xml node). */
+    public $tag;
+
+    /** Called before element printing. */
+    public abstract function start();
+    /** Called after element printing. */
+    public abstract function end();
+
+    /**
+     * Remove structure|text keyword from expression and stores it for later
+     * doEcho() usage.
+     *
+     * $expression = 'stucture my/path';
+     * $expression = $this->extractEchoType($expression);
+     *
+     * ...
+     *
+     * $this->doEcho($code);
+     */
+    protected function extractEchoType($expression)
+    {
+        $echoType = self::ECHO_TEXT;
+        $expression = trim($expression);
+        if (preg_match('/^(text|structure)\s+(.*?)$/ism', $expression, $m)) {
+            list(, $echoType, $expression) = $m;
+        }
+        $this->_echoType = strtolower($echoType);
+        return trim($expression);
+    }
+
+    protected function doEcho($code)
+    {
+        if ($this->_echoType == self::ECHO_TEXT)
+            $this->tag->generator->doEcho($code);
+        else
+            $this->tag->generator->doEchoRaw($code);
+    }
+
+    protected function parseSetExpression($exp)
+    {
+        $exp = trim($exp);
+        // (dest) (value)
+        if (preg_match('/^([a-z0-9:\-_]+)\s+(.*?)$/i', $exp, $m)){
+            array_shift($m);
+            return $m;
+        }
+        // (dest)
+        return array($exp, null);
+    }
+
+    protected $_echoType = PHPTAL_Php_Attribute::ECHO_TEXT;
+}
+
+?>