aboutsummaryrefslogtreecommitdiffstats
path: root/library/HTMLPurifier/Lexer/PEARSax3.php
diff options
context:
space:
mode:
authorChristian Vogeley <christian.vogeley@hotmail.de>2015-01-11 16:22:59 +0100
committerChristian Vogeley <christian.vogeley@hotmail.de>2015-01-11 16:22:59 +0100
commitf0c7612bcd49d32e408e67ac1829ee891c677f7e (patch)
treed4cff4aa2d728524b631776ffffee71f42056421 /library/HTMLPurifier/Lexer/PEARSax3.php
parent43f143a211c75138d09ceb89acc48ea7d5c31ca9 (diff)
parent10102ac2ac4d5b02012a9794e23656717ab05556 (diff)
downloadvolse-hubzilla-f0c7612bcd49d32e408e67ac1829ee891c677f7e.tar.gz
volse-hubzilla-f0c7612bcd49d32e408e67ac1829ee891c677f7e.tar.bz2
volse-hubzilla-f0c7612bcd49d32e408e67ac1829ee891c677f7e.zip
Merge remote-tracking branch 'upstream/master'
Conflicts: doc/html/classRedmatrix_1_1Import_1_1Import-members.html doc/html/classRedmatrix_1_1Import_1_1Import.js
Diffstat (limited to 'library/HTMLPurifier/Lexer/PEARSax3.php')
-rw-r--r--library/HTMLPurifier/Lexer/PEARSax3.php139
1 files changed, 0 insertions, 139 deletions
diff --git a/library/HTMLPurifier/Lexer/PEARSax3.php b/library/HTMLPurifier/Lexer/PEARSax3.php
deleted file mode 100644
index 1d358c7b6..000000000
--- a/library/HTMLPurifier/Lexer/PEARSax3.php
+++ /dev/null
@@ -1,139 +0,0 @@
-<?php
-
-/**
- * Proof-of-concept lexer that uses the PEAR package XML_HTMLSax3 to parse HTML.
- *
- * PEAR, not suprisingly, also has a SAX parser for HTML. I don't know
- * very much about implementation, but it's fairly well written. However, that
- * abstraction comes at a price: performance. You need to have it installed,
- * and if the API changes, it might break our adapter. Not sure whether or not
- * it's UTF-8 aware, but it has some entity parsing trouble (in all areas,
- * text and attributes).
- *
- * Quite personally, I don't recommend using the PEAR class, and the defaults
- * don't use it. The unit tests do perform the tests on the SAX parser too, but
- * whatever it does for poorly formed HTML is up to it.
- *
- * @todo Generalize so that XML_HTMLSax is also supported.
- *
- * @warning Entity-resolution inside attributes is broken.
- */
-
-class HTMLPurifier_Lexer_PEARSax3 extends HTMLPurifier_Lexer
-{
-
- /**
- * Internal accumulator array for SAX parsers.
- */
- protected $tokens = array();
- protected $last_token_was_empty;
-
- private $parent_handler;
- private $stack = array();
-
- public function tokenizeHTML($string, $config, $context) {
-
- $this->tokens = array();
- $this->last_token_was_empty = false;
-
- $string = $this->normalize($string, $config, $context);
-
- $this->parent_handler = set_error_handler(array($this, 'muteStrictErrorHandler'));
-
- $parser = new XML_HTMLSax3();
- $parser->set_object($this);
- $parser->set_element_handler('openHandler','closeHandler');
- $parser->set_data_handler('dataHandler');
- $parser->set_escape_handler('escapeHandler');
-
- // doesn't seem to work correctly for attributes
- $parser->set_option('XML_OPTION_ENTITIES_PARSED', 1);
-
- $parser->parse($string);
-
- restore_error_handler();
-
- return $this->tokens;
-
- }
-
- /**
- * Open tag event handler, interface is defined by PEAR package.
- */
- public function openHandler(&$parser, $name, $attrs, $closed) {
- // entities are not resolved in attrs
- foreach ($attrs as $key => $attr) {
- $attrs[$key] = $this->parseData($attr);
- }
- if ($closed) {
- $this->tokens[] = new HTMLPurifier_Token_Empty($name, $attrs);
- $this->last_token_was_empty = true;
- } else {
- $this->tokens[] = new HTMLPurifier_Token_Start($name, $attrs);
- }
- $this->stack[] = $name;
- return true;
- }
-
- /**
- * Close tag event handler, interface is defined by PEAR package.
- */
- public function closeHandler(&$parser, $name) {
- // HTMLSax3 seems to always send empty tags an extra close tag
- // check and ignore if you see it:
- // [TESTME] to make sure it doesn't overreach
- if ($this->last_token_was_empty) {
- $this->last_token_was_empty = false;
- return true;
- }
- $this->tokens[] = new HTMLPurifier_Token_End($name);
- if (!empty($this->stack)) array_pop($this->stack);
- return true;
- }
-
- /**
- * Data event handler, interface is defined by PEAR package.
- */
- public function dataHandler(&$parser, $data) {
- $this->last_token_was_empty = false;
- $this->tokens[] = new HTMLPurifier_Token_Text($data);
- return true;
- }
-
- /**
- * Escaped text handler, interface is defined by PEAR package.
- */
- public function escapeHandler(&$parser, $data) {
- if (strpos($data, '--') === 0) {
- // remove trailing and leading double-dashes
- $data = substr($data, 2);
- if (strlen($data) >= 2 && substr($data, -2) == "--") {
- $data = substr($data, 0, -2);
- }
- if (isset($this->stack[sizeof($this->stack) - 1]) &&
- $this->stack[sizeof($this->stack) - 1] == "style") {
- $this->tokens[] = new HTMLPurifier_Token_Text($data);
- } else {
- $this->tokens[] = new HTMLPurifier_Token_Comment($data);
- }
- $this->last_token_was_empty = false;
- }
- // CDATA is handled elsewhere, but if it was handled here:
- //if (strpos($data, '[CDATA[') === 0) {
- // $this->tokens[] = new HTMLPurifier_Token_Text(
- // substr($data, 7, strlen($data) - 9) );
- //}
- return true;
- }
-
- /**
- * An error handler that mutes strict errors
- */
- public function muteStrictErrorHandler($errno, $errstr, $errfile=null, $errline=null, $errcontext=null) {
- if ($errno == E_STRICT) return;
- return call_user_func($this->parent_handler, $errno, $errstr, $errfile, $errline, $errcontext);
- }
-
-}
-
-// vim: et sw=4 sts=4