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author | friendica <info@friendica.com> | 2015-01-01 22:18:27 -0800 |
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committer | friendica <info@friendica.com> | 2015-01-01 22:18:27 -0800 |
commit | a0052f0176bd079e6a94baec59fea2ec5a8d651e (patch) | |
tree | c323edd823681bc2e8ca757e7eaf8354d42c7b51 /library/HTMLPurifier/Lexer/PEARSax3.php | |
parent | 545e47933a0816699c68d98a7742a03260d6a54f (diff) | |
download | volse-hubzilla-a0052f0176bd079e6a94baec59fea2ec5a8d651e.tar.gz volse-hubzilla-a0052f0176bd079e6a94baec59fea2ec5a8d651e.tar.bz2 volse-hubzilla-a0052f0176bd079e6a94baec59fea2ec5a8d651e.zip |
htmlpurifier update - compatibility issue with language library autoloader
Diffstat (limited to 'library/HTMLPurifier/Lexer/PEARSax3.php')
-rw-r--r-- | library/HTMLPurifier/Lexer/PEARSax3.php | 139 |
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 |