Added Screen9IdParser.php.

Screen9IdParser.php

@@ -0,0 +1,209 @@
+<?php
+
+class Screen9IdParser
+{
+
+    var $xml_parser;
+
+    var $tag_handlers = array( 'object' => array('startObject', 'endObject'),
+                               'param'  => array('startParam', 'endParam'),
+                               'embed'  => array('startEmbed', 'endEmbed') );
+
+    var $objectId;
+
+    var $objectClassId;
+
+    var $objectWidth;
+
+    var $objectHeight;
+
+    var $params = array();
+
+    var $embedSrc;
+
+    var $embedName;
+
+    var $embedType;
+
+    var $embedAllowScriptAccess;
+
+    var $embedAllowFullscreen;
+
+    var $embedWmode;
+
+    var $embedWidth;
+
+    var $embedHeight;
+
+    var $embedFlashvars;
+
+    public function __construct() {
+        $this->xml_parser = xml_parser_create();
+        xml_parser_set_option( $this->xml_parser, XML_OPTION_CASE_FOLDING, 0);
+        xml_set_object( $this->xml_parser, $this );
+        xml_set_element_handler($this->xml_parser, "startElement", "endElement");
+    }
+
+    public function __destruct() {
+        xml_parser_free( $this->xml_parser );
+    }
+
+    public function startElement($parser, $name, $attrs) 
+    {
+        if ( !isset($this->tag_handlers[$name]) ) {
+            throw new Exception("Invalid tag: [$name]");
+        }
+
+        $handler = $this->tag_handlers[$name];
+        $this->{$handler[0]}($attrs);
+    }
+
+    public function endElement($parser, $name) 
+    {
+        if ( !isset($this->tag_handlers[$name]) ) {
+            throw new Exception("Invalid tag: [$name]");
+        }
+
+        $this->{$this->tag_handlers[$name][1]}();
+    }
+
+    public function startObject($attrs)
+    {
+        if ($this->objectId != null) {
+            throw new Exception("Unexpected <object>.");
+        }
+        $this->objectId = self::attr($attrs['id']);
+        $this->objectClassId = self::attr($attrs['classid']);
+        $this->width = self::attr($attrs['width']);
+        $this->height = self::attr($attrs['height']);
+    }
+
+    public function endObject()
+    {
+    }
+
+    public function startParam($attrs)
+    {
+        if ($this->objectId == null) {
+            throw new Exception("Unexpected <param>.");
+        }
+
+        if ( ! isset($attrs['name']) ) {
+            throw new Exception("Missing name on param tag!");
+        }
+
+        if ( ! isset($attrs['value']) ) {
+            throw new Exception("Missing value on param tag!");
+        }
+
+        $this->params[$attrs['name']] = self::attr($attrs['value']);
+    }
+
+    public function endParam()
+    {
+    }
+
+    private static function attr($attr)
+    {
+        if (preg_match( '/[<>"&]/', $attr) ) {
+            throw new Exception("Invalid attribute value: " . htmlspecialchars($attr));
+        }
+        return $attr;
+    }
+
+    public function startEmbed($attrs)
+    {
+        if ($this->objectId == null) {
+            throw new Exception("Unexpected <embed>.");
+        }
+
+        if ( ! isset($attrs['src']) ) {
+            throw new Exception("Missing src attribute on embed tag!");
+        }
+
+        if ( ! isset($attrs['name']) ) {
+            throw new Exception("Missing name attribute on embed tag!");
+        }
+
+        if ( ! isset($attrs['flashvars']) ) {
+            throw new Exception("missing flashvars attribute on embed tag!");
+        }
+
+        $this->embedSrc = self::attr($attrs['src']);
+        $this->embedName = self::attr($attrs['name']);
+        $this->embedType = self::attr($attrs['type']);
+        $this->embedFlashvars = self::attr($attrs['flashvars']);
+        $this->embedAllowScriptAccess = self::attr($attrs['allowscriptaccess']);
+        $this->embedAllowFullscreen = self::attr($attrs['allowfullscreen']);
+        $this->embedWmode = self::attr($attrs['wmode']);
+        $this->embedWidth = self::attr($attrs['width']);
+        $this->embedHeight = self::attr($attrs['height']);
+    }
+
+    public function endEmbed()
+    {
+    }
+
+    public function parse( $id )
+    {
+        try {
+            if ( !xml_parse( $this->xml_parser, '<?xml version="1.0" ?>' . $id, true ) ) {
+                return false;
+            }
+        } catch ( Exception $e ) {
+            return false;
+        }
+
+        if ( !isset($this->embedSrc) ) {
+            return false;
+        }
+
+        if ( !isset($this->embedType) ) {
+            $this->embedType = 'application/x-shockwave-flash';
+        }
+
+        if ( !isset($this->embedAllowScriptAccess) ) {
+            $this->embedAllowScriptAccess = 'always';
+        }
+
+        if ( !isset($this->embedAllowFullscreen) ) {
+            $this->embedAllowFullscreen = 'true';
+        }
+
+        if ( !isset($this->embedWmode) ) {
+            $this->embedWmode = 'transparent';
+        }
+
+        return true;
+    }
+
+    public function setWidth( $width )
+    {
+        $this->objectWidth = $width;
+        $this->embedWidth = $width;
+    }
+
+    public function setHeight( $height )
+    {
+        $this->objectHeight = $height;
+        $this->embedHeight = $height;
+    }
+
+    private static function paramTag( $name, $value )
+    {
+        return "<param name=\"$name\" value=\"$value\"></param>";
+    }
+
+    public function toString()
+    {
+        $result = "<object id=\"{$this->objectId}\" classid=\"{$this->objectClassId}\" width=\"{$this->objectWidth}\" height=\"{$this->objectHeight}\" >";
+
+        foreach ( $this->params as $name => $value ) {
+            $result .= self::paramTag($name, $value);
+        }
+
+        $result .= "<embed src=\"{$this->embedSrc}\" name=\"{$this->embedName}\" type=\"{$this->embedType}\" allowscriptaccess=\"{$this->embedAllowScriptAccess}\" allowfullscreen=\"{$this->embedAllowFullscreen}\" wmode=\"{$this->embedWmode}\" width=\"{$this->embedWidth}\" height=\"{$this->embedHeight}\" flashvars=\"{$this->embedFlashvars}\" >";
+
+        return $result . '</embed></object>';
+    }
+}