namespace.php

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<?php
//
// +---------------------------------------------------------------------------+
// | PEAR :: XML :: Transformer                                                |
// +---------------------------------------------------------------------------+
// | Copyright (c) 2002-2004 Sebastian Bergmann <[e-mail]> and |
// |                         Kristian K鰄ntopp <[e-mail]>.            |
// +---------------------------------------------------------------------------+
// | This source file is subject to version 3.00 of the PHP License,           |
// | that is available at http://www.php.net/license/3_0.txt.                  |
// | If you did not receive a copy of the PHP license and are unable to        |
// | obtain it through the world-wide-web, please send a note to               |
// | [e-mail] so we can mail you a copy immediately.                    |
// +---------------------------------------------------------------------------+
//
// $Id: Namespace.php,v 1.27 2004/11/19 07:18:57 sebastian Exp $
//

require_once 'XML/Util.php';

 /**
 * Convenience Base Class for Namespace Transformers.
 *
 * Example
 *
 * <code>
 * <?php
 * require_once 'XML/Transformer.php';
 * require_once 'XML/Transformer/Namespace.php';
 *
 * class Image extends XML_Transformer_Namespace {
 *     var $imageAttributes = array();
 *
 *     function truePath($path) {
 *         if (php_sapi_name() == 'apache') {
 *             $r    = apache_lookup_uri($path);
 *             $path = $r->filename;
 *         } else {
 *             $path = $_SERVER['DOCUMENT_ROOT'] . "/$path";
 *         }
 *
 *         return $path;
 *     }
 *
 *     function start_img($attributes) {
 *         $this->imageAttributes = $attributes;
 *         return '';
 *     }
 *
 *     function end_img($cdata) {
 *         $src = $this->truePath($this->imageAttributes['src']);
 *         list($w, $h, $t, $whs) = getimagesize($src);
 *
 *         $this->imageAttributes['height'] = $w;
 *         $this->imageAttributes['width']  = $h;
 *
 *         return sprintf(
 *           '<img %s/>',
 *           XML_Transformer::attributesToString($this->imageAttributes)
 *         );
 *     }
 * }
 * ?>
 * </code>
 *
 * @author      Sebastian Bergmann <[e-mail]>
 * @author      Kristian K鰄ntopp <[e-mail]>
 * @copyright   Copyright &copy; 2002-2004 Sebastian Bergmann <[e-mail]> and Kristian K鰄ntopp <[e-mail]>
 * @license     http://www.php.net/license/3_0.txt The PHP License, Version 3.0
 * @category    XML
 * @package     XML_Transformer
 */
class XML_Transformer_Namespace {
    // {{{ Members

    /**
    * @var    string
    * @access public
    */
    var $defaultNamespacePrefix = '';

    /**
    * @var    boolean
    * @access public
    */
    var $secondPassRequired = FALSE;

    /**
    * @var    array
    * @access private
    */
    var $_prefix = array();

    /**
    * @var    string
    * @access private
    */
    var $_transformer = '';

    // }}}
    // {{{ function initObserver($prefix, &$object)

    /**
    * Called by XML_Transformer at initialization time.
    * We use this to remember our namespace prefixes
    * (there can be multiple) and a pointer to the
    * Transformer object.
    *
    * @param  string
    * @param  object
    * @access public
    */
    function initObserver($prefix, &$object) {
      $this->_prefix[]    = $prefix;
      $this->_transformer = $object;
    }

    // }}}
    // {{{ function startElement($element, $attributes)

    /**
    * Wrapper for startElement handler.
    *
    * @param  string
    * @param  array
    * @return string
    * @access public
    */
    function startElement($element, $attributes) {
        $do = 'start_' . $element;

        if (method_exists($this, $do)) {
            return $this->$do($attributes);
        }

        return sprintf(
          "<%s%s>",

          $element,
          XML_Util::attributesToString($attributes)
        );
    }

    // }}}
    // {{{ function endElement($element, $cdata)

    /**
    * Wrapper for endElement handler.
    *
    * @param  string
    * @param  string
    * @return array
    * @access public
    */
    function endElement($element, $cdata) {
        $do = 'end_' . $element;

        if (method_exists($this, $do)) {
            return $this->$do($cdata);
        }

        return array(
          sprintf(
            '%s</%s>',

            $cdata,
            $element
          ),
          FALSE
        );
    }

    // }}}
    // {{{ function function getLock()

    /**
    * Lock all other namespace handlers.
    *
    * @return boolean
    * @access public
    * @see    releaseLock()
    */
    function getLock() {
        return $this->_transformer->_callbackRegistry->getLock($this->_prefix[0]);
    }

    // }}}
    // {{{ function releaseLock()

    /**
    * Releases a lock.
    *
    * @access public
    * @see    getLock()
    */
    function releaseLock() {
        $this->_transformer->_callbackRegistry->releaseLock();
    }

    // }}}
}

/*
 * vim600:  et sw=2 ts=2 fdm=marker
 * vim<600: et sw=2 ts=2
 */
?>