287 lines
9.7 KiB
PHP
287 lines
9.7 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4: */
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2002 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject toversion 3.0 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/3_0.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Alexander Zhukov <alex@veresk.ru> Original port from Python |
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// | Authors: Harry Fuecks <hfuecks@phppatterns.com> Port to PEAR + more |
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// | Authors: Many @ Sitepointforums Advanced PHP Forums |
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// +----------------------------------------------------------------------+
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//
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// $Id: States.php,v 1.3 2007/10/29 21:41:35 hfuecks Exp $
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//
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/**
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* Parsing states.
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* @package XML_HTMLSax3
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* @version $Id: States.php,v 1.3 2007/10/29 21:41:35 hfuecks Exp $
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*/
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/**
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* Define parser states
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*/
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define('XML_HTMLSAX3_STATE_STOP', 0);
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define('XML_HTMLSAX3_STATE_START', 1);
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define('XML_HTMLSAX3_STATE_TAG', 2);
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define('XML_HTMLSAX3_STATE_OPENING_TAG', 3);
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define('XML_HTMLSAX3_STATE_CLOSING_TAG', 4);
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define('XML_HTMLSAX3_STATE_ESCAPE', 6);
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define('XML_HTMLSAX3_STATE_JASP', 7);
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define('XML_HTMLSAX3_STATE_PI', 8);
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/**
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* StartingState searches for the start of any XML tag
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_StartingState {
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant XML_HTMLSAX3_STATE_TAG
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* @access protected
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*/
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function parse(&$context) {
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$data = $context->scanUntilString('<');
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if ($data != '') {
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$context->handler_object_data->
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{$context->handler_method_data}($context->htmlsax, $data);
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}
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$context->IgnoreCharacter();
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return XML_HTMLSAX3_STATE_TAG;
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}
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}
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/**
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* Decides which state to move one from after StartingState
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_TagState {
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant the next state to move into
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* @access protected
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*/
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function parse(&$context) {
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switch($context->ScanCharacter()) {
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case '/':
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return XML_HTMLSAX3_STATE_CLOSING_TAG;
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break;
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case '?':
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return XML_HTMLSAX3_STATE_PI;
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break;
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case '%':
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return XML_HTMLSAX3_STATE_JASP;
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break;
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case '!':
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return XML_HTMLSAX3_STATE_ESCAPE;
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break;
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default:
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$context->unscanCharacter();
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return XML_HTMLSAX3_STATE_OPENING_TAG;
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}
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}
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}
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/**
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* Dealing with closing XML tags
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_ClosingTagState {
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant XML_HTMLSAX3_STATE_START
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* @access protected
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*/
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function parse(&$context) {
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$tag = $context->scanUntilCharacters('/>');
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if ($tag != '') {
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$char = $context->scanCharacter();
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if ($char == '/') {
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$char = $context->scanCharacter();
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if ($char != '>') {
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$context->unscanCharacter();
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}
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}
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$context->handler_object_element->
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{$context->handler_method_closing}($context->htmlsax, $tag, FALSE);
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}
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return XML_HTMLSAX3_STATE_START;
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}
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}
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/**
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* Dealing with opening XML tags
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_OpeningTagState {
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/**
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* Handles attributes
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* @param string attribute name
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* @param string attribute value
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* @return void
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* @access protected
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* @see XML_HTMLSax3_AttributeStartState
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*/
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function parseAttributes(&$context) {
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$Attributes = array();
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$context->ignoreWhitespace();
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$attributename = $context->scanUntilCharacters("=/> \n\r\t");
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while ($attributename != '') {
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$attributevalue = NULL;
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$context->ignoreWhitespace();
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$char = $context->scanCharacter();
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if ($char == '=') {
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$context->ignoreWhitespace();
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$char = $context->ScanCharacter();
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if ($char == '"') {
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$attributevalue= $context->scanUntilString('"');
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$context->IgnoreCharacter();
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} else if ($char == "'") {
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$attributevalue = $context->scanUntilString("'");
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$context->IgnoreCharacter();
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} else {
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$context->unscanCharacter();
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$attributevalue =
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$context->scanUntilCharacters("> \n\r\t");
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}
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} else if ($char !== NULL) {
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$attributevalue = NULL;
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$context->unscanCharacter();
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}
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$Attributes[$attributename] = $attributevalue;
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$context->ignoreWhitespace();
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$attributename = $context->scanUntilCharacters("=/> \n\r\t");
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}
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return $Attributes;
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}
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant XML_HTMLSAX3_STATE_START
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* @access protected
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*/
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function parse(&$context) {
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$tag = $context->scanUntilCharacters("/> \n\r\t");
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if ($tag != '') {
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$this->attrs = array();
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$Attributes = $this->parseAttributes($context);
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$char = $context->scanCharacter();
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if ($char == '/') {
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$char = $context->scanCharacter();
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if ($char != '>') {
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$context->unscanCharacter();
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}
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$context->handler_object_element->
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{$context->handler_method_opening}($context->htmlsax, $tag,
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$Attributes, TRUE);
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$context->handler_object_element->
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{$context->handler_method_closing}($context->htmlsax, $tag,
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TRUE);
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} else {
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$context->handler_object_element->
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{$context->handler_method_opening}($context->htmlsax, $tag,
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$Attributes, FALSE);
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}
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}
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return XML_HTMLSAX3_STATE_START;
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}
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}
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/**
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* Deals with XML escapes handling comments and CDATA correctly
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_EscapeState {
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant XML_HTMLSAX3_STATE_START
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* @access protected
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*/
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function parse(&$context) {
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$char = $context->ScanCharacter();
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if ($char == '-') {
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$char = $context->ScanCharacter();
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if ($char == '-') {
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$context->unscanCharacter();
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$context->unscanCharacter();
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$text = $context->scanUntilString('-->');
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$text .= $context->scanCharacter();
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$text .= $context->scanCharacter();
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} else {
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$context->unscanCharacter();
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$text = $context->scanUntilString('>');
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}
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} else if ( $char == '[') {
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$context->unscanCharacter();
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$text = $context->scanUntilString(']>');
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$text.= $context->scanCharacter();
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} else {
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$context->unscanCharacter();
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$text = $context->scanUntilString('>');
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}
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$context->IgnoreCharacter();
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if ($text != '') {
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$context->handler_object_escape->
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{$context->handler_method_escape}($context->htmlsax, $text);
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}
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return XML_HTMLSAX3_STATE_START;
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}
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}
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/**
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* Deals with JASP/ASP markup
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_JaspState {
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant XML_HTMLSAX3_STATE_START
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* @access protected
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*/
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function parse(&$context) {
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$text = $context->scanUntilString('%>');
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if ($text != '') {
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$context->handler_object_jasp->
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{$context->handler_method_jasp}($context->htmlsax, $text);
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}
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$context->IgnoreCharacter();
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$context->IgnoreCharacter();
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return XML_HTMLSAX3_STATE_START;
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}
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}
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/**
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* Deals with XML processing instructions
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* @package XML_HTMLSax3
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* @access protected
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*/
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class XML_HTMLSax3_PiState {
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/**
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* @param XML_HTMLSax3_StateParser subclass
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* @return constant XML_HTMLSAX3_STATE_START
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* @access protected
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*/
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function parse(&$context) {
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$target = $context->scanUntilCharacters(" \n\r\t");
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$data = $context->scanUntilString('?>');
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if ($data != '') {
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$context->handler_object_pi->
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{$context->handler_method_pi}($context->htmlsax, $target, $data);
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}
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$context->IgnoreCharacter();
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$context->IgnoreCharacter();
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return XML_HTMLSAX3_STATE_START;
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}
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}
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?>
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