--- /dev/null
+<?php
+// @codingStandardsIgnoreFile
+// @ignore comment_docblock_file:file
+// @ignore style_curly_braces:file
+// @ignore style_string_spacing:file
+// @ignore style_else_spacing:file
+// @ignore comment_comment_docblock_missing:file
+// @ignore comment_comment_eg:file
+// @ignore production_code:file
+// @ignore druplart_unary:file
+// @ignore style_uppercase_constants:file
+// @ignore comment_comment_space:file
+// @ignore druplart_conditional_assignment:file
+// @ignore style_paren_spacing:file
+// @ignore style_no_tabs:file
+// @ignore :file
+
+/* 9 April 2008. version 1.1
+ *
+ * This is the php version of the Dean Edwards JavaScript's Packer,
+ * Based on :
+ *
+ * ParseMaster, version 1.0.2 (2005-08-19) Copyright 2005, Dean Edwards
+ * a multi-pattern parser.
+ * KNOWN BUG: erroneous behavior when using escapeChar with a replacement
+ * value that is a function
+ *
+ * packer, version 2.0.2 (2005-08-19) Copyright 2004-2005, Dean Edwards
+ *
+ * License: http://creativecommons.org/licenses/LGPL/2.1/
+ *
+ * Ported to PHP by Nicolas Martin.
+ *
+ * ----------------------------------------------------------------------
+ * changelog:
+ * 1.1 : correct a bug, '\0' packed then unpacked becomes '\'.
+ * ----------------------------------------------------------------------
+ *
+ * examples of usage :
+ * $myPacker = new JavaScriptPacker($script, 62, true, false);
+ * $packed = $myPacker->pack();
+ *
+ * or
+ *
+ * $myPacker = new JavaScriptPacker($script, 'Normal', true, false);
+ * $packed = $myPacker->pack();
+ *
+ * or (default values)
+ *
+ * $myPacker = new JavaScriptPacker($script);
+ * $packed = $myPacker->pack();
+ *
+ *
+ * params of the constructor :
+ * $script: the JavaScript to pack, string.
+ * $encoding: level of encoding, int or string :
+ * 0,10,62,95 or 'None', 'Numeric', 'Normal', 'High ASCII'.
+ * default: 62.
+ * $fastDecode: include the fast decoder in the packed result, boolean.
+ * default : true.
+ * $specialChars: if you are flagged your private and local variables
+ * in the script, boolean.
+ * default: false.
+ *
+ * The pack() method return the compressed JavasScript, as a string.
+ *
+ * see http://dean.edwards.name/packer/usage/ for more information.
+ *
+ * Notes :
+ * # need PHP 5 . Tested with PHP 5.1.2, 5.1.3, 5.1.4, 5.2.3
+ *
+ * # The packed result may be different than with the Dean Edwards
+ * version, but with the same length. The reason is that the PHP
+ * function usort to sort array don't necessarily preserve the
+ * original order of two equal member. The Javascript sort function
+ * in fact preserve this order (but that's not require by the
+ * ECMAScript standard). So the encoded keywords order can be
+ * different in the two results.
+ *
+ * # Be careful with the 'High ASCII' Level encoding if you use
+ * UTF-8 in your files...
+ */
+
+
+class JavaScriptPacker {
+ // constants
+ const IGNORE = '$1';
+
+ // validate parameters
+ private $_script = '';
+ private $_encoding = 62;
+ private $_fastDecode = true;
+ private $_specialChars = false;
+
+ private $LITERAL_ENCODING = array(
+ 'None' => 0,
+ 'Numeric' => 10,
+ 'Normal' => 62,
+ 'High ASCII' => 95,
+ );
+
+ public function __construct($_script, $_encoding = 62, $_fastDecode = true, $_specialChars = false) {
+ $this->_script = $_script . "\n";
+ if (array_key_exists($_encoding, $this->LITERAL_ENCODING)) {
+ $_encoding = $this->LITERAL_ENCODING[$_encoding];
+ }
+ $this->_encoding = min((int) $_encoding, 95);
+ $this->_fastDecode = $_fastDecode;
+ $this->_specialChars = $_specialChars;
+ }
+
+ public function pack() {
+ $this->_addParser('_basicCompression');
+ if ($this->_specialChars) {
+ $this->_addParser('_encodeSpecialChars');
+ }
+ if ($this->_encoding) {
+ $this->_addParser('_encodeKeywords');
+ }
+
+ // go!
+ return $this->_pack($this->_script);
+ }
+
+ // apply all parsing routines
+ private function _pack($script) {
+ for ($i = 0; isset($this->_parsers[$i]); $i++) {
+ $script = call_user_func(array(&$this, $this->_parsers[$i]), $script);
+ }
+ return $script;
+ }
+
+ // keep a list of parsing functions, they'll be executed all at once
+ private $_parsers = array();
+ private function _addParser($parser) {
+ $this->_parsers[] = $parser;
+ }
+
+ // zero encoding - just removal of white space and comments
+ private function _basicCompression($script) {
+ $parser = new ParseMaster();
+ // make safe
+ $parser->escapeChar = '\\';
+ // protect strings
+ $parser->add('/\'[^\'\\n\\r]*\'/', self::IGNORE);
+ $parser->add('/"[^"\\n\\r]*"/', self::IGNORE);
+ // remove comments
+ $parser->add('/\\/\\/[^\\n\\r]*[\\n\\r]/', ' ');
+ $parser->add('/\\/\\*[^*]*\\*+([^\\/][^*]*\\*+)*\\//', ' ');
+ // protect regular expressions
+ $parser->add('/\\s+(\\/[^\\/\\n\\r\\*][^\\/\\n\\r]*\\/g?i?)/', '$2'); // IGNORE
+ $parser->add('/[^\\w\\x24\\/\'"*)\\?:]\\/[^\\/\\n\\r\\*][^\\/\\n\\r]*\\/g?i?/', self::IGNORE);
+ // remove: ;;; doSomething();
+ if ($this->_specialChars) {
+ $parser->add('/;;;[^\\n\\r]+[\\n\\r]/');
+ }
+ // remove redundant semi-colons
+ $parser->add('/\\(;;\\)/', self::IGNORE); // protect for (;;) loops
+ $parser->add('/;+\\s*([};])/', '$2');
+ // apply the above
+ $script = $parser->exec($script);
+
+ // remove white-space
+ $parser->add('/(\\b|\\x24)\\s+(\\b|\\x24)/', '$2 $3');
+ $parser->add('/([+\\-])\\s+([+\\-])/', '$2 $3');
+ $parser->add('/\\s+/', '');
+ // done
+ return $parser->exec($script);
+ }
+
+ private function _encodeSpecialChars($script) {
+ $parser = new ParseMaster();
+ // replace: $name -> n, $$name -> na
+ $parser->add('/((\\x24+)([a-zA-Z$_]+))(\\d*)/',
+ array('fn' => '_replace_name')
+ );
+ // replace: _name -> _0, double-underscore (__name) is ignored
+ $regexp = '/\\b_[A-Za-z\\d]\\w*/';
+ // build the word list
+ $keywords = $this->_analyze($script, $regexp, '_encodePrivate');
+ // quick ref
+ $encoded = $keywords['encoded'];
+
+ $parser->add($regexp,
+ array(
+ 'fn' => '_replace_encoded',
+ 'data' => $encoded,
+ )
+ );
+ return $parser->exec($script);
+ }
+
+ private function _encodeKeywords($script) {
+ // escape high-ascii values already in the script (i.e. in strings)
+ if ($this->_encoding > 62) {
+ $script = $this->_escape95($script);
+ }
+ // create the parser
+ $parser = new ParseMaster();
+ $encode = $this->_getEncoder($this->_encoding);
+ // for high-ascii, don't encode single character low-ascii
+ $regexp = ($this->_encoding > 62) ? '/\\w\\w+/' : '/\\w+/';
+ // build the word list
+ $keywords = $this->_analyze($script, $regexp, $encode);
+ $encoded = $keywords['encoded'];
+
+ // encode
+ $parser->add($regexp,
+ array(
+ 'fn' => '_replace_encoded',
+ 'data' => $encoded,
+ )
+ );
+ if (empty($script)) {
+ return $script;
+ }
+ else {
+ //$res = $parser->exec($script);
+ //$res = $this->_bootStrap($res, $keywords);
+ //return $res;
+ return $this->_bootStrap($parser->exec($script), $keywords);
+ }
+ }
+
+ private function _analyze($script, $regexp, $encode) {
+ // analyse
+ // retrieve all words in the script
+ $all = array();
+ preg_match_all($regexp, $script, $all);
+ $_sorted = array(); // list of words sorted by frequency
+ $_encoded = array(); // dictionary of word->encoding
+ $_protected = array(); // instances of "protected" words
+ $all = $all[0]; // simulate the javascript comportement of global match
+ if (!empty($all)) {
+ $unsorted = array(); // same list, not sorted
+ $protected = array(); // "protected" words (dictionary of word->"word")
+ $value = array(); // dictionary of charCode->encoding (eg. 256->ff)
+ $this->_count = array(); // word->count
+ $i = count($all);
+ $j = 0; //$word = null;
+ // count the occurrences - used for sorting later
+ do {
+ --$i;
+ $word = '$' . $all[$i];
+ if (!isset($this->_count[$word])) {
+ $this->_count[$word] = 0;
+ $unsorted[$j] = $word;
+ // make a dictionary of all of the protected words in this script
+// these are words that might be mistaken for encoding
+ //if (is_string($encode) && method_exists($this, $encode))
+ $values[$j] = call_user_func(array(&$this, $encode), $j);
+ $protected['$' . $values[$j]] = $j++;
+ }
+ // increment the word counter
+ $this->_count[$word]++;
+ } while ($i > 0);
+ // prepare to sort the word list, first we must protect
+// words that are also used as codes. we assign them a code
+// equivalent to the word itself.
+ // e.g. if "do" falls within our encoding range
+// then we store keywords["do"] = "do";
+ // this avoids problems when decoding
+ $i = count($unsorted);
+ do {
+ $word = $unsorted[--$i];
+ if (isset($protected[$word]) /*!= null*/) {
+ $_sorted[$protected[$word]] = substr($word, 1);
+ $_protected[$protected[$word]] = true;
+ $this->_count[$word] = 0;
+ }
+ } while ($i);
+
+ // sort the words by frequency
+ // Note: the javascript and php version of sort can be different :
+ // in php manual, usort :
+ // " If two members compare as equal,
+ // their order in the sorted array is undefined."
+ // so the final packed script is different of the Dean's javascript version
+ // but equivalent.
+ // the ECMAscript standard does not guarantee this behaviour,
+ // and thus not all browsers (e.g. Mozilla versions dating back to at
+ // least 2003) respect this.
+ usort($unsorted, array(&$this, '_sortWords'));
+ $j = 0;
+ // because there are "protected" words in the list
+// we must add the sorted words around them
+ do {
+ if (!isset($_sorted[$i])) {
+ $_sorted[$i] = substr($unsorted[$j++], 1);
+ }
+ $_encoded[$_sorted[$i]] = $values[$i];
+ } while (++$i < count($unsorted));
+ }
+ return array(
+ 'sorted' => $_sorted,
+ 'encoded' => $_encoded,
+ 'protected' => $_protected,
+ );
+ }
+
+ private $_count = array();
+ private function _sortWords($match1, $match2) {
+ return $this->_count[$match2] - $this->_count[$match1];
+ }
+
+ // build the boot function used for loading and decoding
+ private function _bootStrap($packed, $keywords) {
+ $ENCODE = $this->_safeRegExp('$encode\\($count\\)');
+
+ // $packed: the packed script
+ $packed = "'" . $this->_escape($packed) . "'";
+
+ // $ascii: base for encoding
+ $ascii = min(count($keywords['sorted']), $this->_encoding);
+ if ($ascii == 0) {
+ $ascii = 1;
+ }
+
+ // $count: number of words contained in the script
+ $count = count($keywords['sorted']);
+
+ // $keywords: list of words contained in the script
+ foreach ($keywords['protected'] as $i => $value) {
+ $keywords['sorted'][$i] = '';
+ }
+ // convert from a string to an array
+ ksort($keywords['sorted']);
+ $keywords = "'" . implode('|', $keywords['sorted']) . "'.split('|')";
+
+ $encode = ($this->_encoding > 62) ? '_encode95' : $this->_getEncoder($ascii);
+ $encode = $this->_getJSFunction($encode);
+ $encode = preg_replace('/_encoding/', '$ascii', $encode);
+ $encode = preg_replace('/arguments\\.callee/', '$encode', $encode);
+ $inline = '\\$count' . ($ascii > 10 ? '.toString(\\$ascii)' : '');
+
+ // $decode: code snippet to speed up decoding
+ if ($this->_fastDecode) {
+ // create the decoder
+ $decode = $this->_getJSFunction('_decodeBody');
+ if ($this->_encoding > 62) {
+ $decode = preg_replace('/\\\\w/', '[\\xa1-\\xff]', $decode);
+ }
+ // perform the encoding inline for lower ascii values
+ elseif ($ascii < 36) {
+ $decode = preg_replace($ENCODE, $inline, $decode);
+ }
+ // special case: when $count==0 there are no keywords. I want to keep
+// the basic shape of the unpacking funcion so i'll frig the code...
+ if ($count == 0) {
+ $decode = preg_replace($this->_safeRegExp('($count)\\s*=\\s*1'), '$1=0', $decode, 1);
+ }
+ }
+
+ // boot function
+ $unpack = $this->_getJSFunction('_unpack');
+ if ($this->_fastDecode) {
+ // insert the decoder
+ $this->buffer = $decode;
+ $unpack = preg_replace_callback('/\\{/', array(&$this, '_insertFastDecode'), $unpack, 1);
+ }
+ $unpack = preg_replace('/"/', "'", $unpack);
+ if ($this->_encoding > 62) { // high-ascii
+ // get rid of the word-boundaries for regexp matches
+ $unpack = preg_replace('/\'\\\\\\\\b\'\s*\\+|\\+\s*\'\\\\\\\\b\'/', '', $unpack);
+ }
+ if ($ascii > 36 || $this->_encoding > 62 || $this->_fastDecode) {
+ // insert the encode function
+ $this->buffer = $encode;
+ $unpack = preg_replace_callback('/\\{/', array(&$this, '_insertFastEncode'), $unpack, 1);
+ }
+ else {
+ // perform the encoding inline
+ $unpack = preg_replace($ENCODE, $inline, $unpack);
+ }
+ // pack the boot function too
+ $unpackPacker = new JavaScriptPacker($unpack, 0, false, true);
+ $unpack = $unpackPacker->pack();
+
+ // arguments
+ $params = array($packed, $ascii, $count, $keywords);
+ if ($this->_fastDecode) {
+ $params[] = 0;
+ $params[] = '{}';
+ }
+ $params = implode(',', $params);
+
+ // the whole thing
+ return 'eval(' . $unpack . '(' . $params . "))\n";
+ }
+
+ private $buffer;
+ private function _insertFastDecode($match) {
+ return '{' . $this->buffer . ';';
+ }
+ private function _insertFastEncode($match) {
+ return '{$encode=' . $this->buffer . ';';
+ }
+
+ // mmm.. ..which one do i need ??
+ private function _getEncoder($ascii) {
+ return $ascii > 10 ? $ascii > 36 ? $ascii > 62 ?
+ '_encode95' : '_encode62' : '_encode36' : '_encode10';
+ }
+
+ // zero encoding
+ // characters: 0123456789
+ private function _encode10($charCode) {
+ return $charCode;
+ }
+
+ // inherent base36 support
+ // characters: 0123456789abcdefghijklmnopqrstuvwxyz
+ private function _encode36($charCode) {
+ return base_convert($charCode, 10, 36);
+ }
+
+ // hitch a ride on base36 and add the upper case alpha characters
+ // characters: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
+ private function _encode62($charCode) {
+ $res = '';
+ if ($charCode >= $this->_encoding) {
+ $res = $this->_encode62((int) ($charCode / $this->_encoding));
+ }
+ $charCode = $charCode % $this->_encoding;
+
+ if ($charCode > 35) {
+ return $res . chr($charCode + 29);
+ }
+ else {
+ return $res . base_convert($charCode, 10, 36);
+ }
+ }
+
+ // use high-ascii values
+ // characters: ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþ
+ private function _encode95($charCode) {
+ $res = '';
+ if ($charCode >= $this->_encoding) {
+ $res = $this->_encode95($charCode / $this->_encoding);
+ }
+
+ return $res . chr(($charCode % $this->_encoding) + 161);
+ }
+
+ private function _safeRegExp($string) {
+ return '/' . preg_replace('/\$/', '\\\$', $string) . '/';
+ }
+
+ private function _encodePrivate($charCode) {
+ return "_" . $charCode;
+ }
+
+ // protect characters used by the parser
+ private function _escape($script) {
+ return preg_replace('/([\\\\\'])/', '\\\$1', $script);
+ }
+
+ // protect high-ascii characters already in the script
+ private function _escape95($script) {
+ return preg_replace_callback(
+ '/[\\xa1-\\xff]/',
+ array(&$this, '_escape95Bis'),
+ $script
+ );
+ }
+ private function _escape95Bis($match) {
+ return '\x' . ((string) dechex(ord($match)));
+ }
+
+
+ private function _getJSFunction($aName) {
+ if (defined('self::JSFUNCTION' . $aName)) {
+ return constant('self::JSFUNCTION' . $aName);
+ }
+ else {
+ return '';
+ }
+ }
+
+ // JavaScript Functions used.
+ // Note : In Dean's version, these functions are converted
+ // with 'String(aFunctionName);'.
+ // This internal conversion complete the original code, ex :
+ // 'while (aBool) anAction();' is converted to
+ // 'while (aBool) { anAction(); }'.
+ // The JavaScript functions below are corrected.
+
+ // unpacking function - this is the boot strap function
+// data extracted from this packing routine is passed to
+// this function when decoded in the target
+ // NOTE ! : without the ';' final.
+ const JSFUNCTION_unpack =
+
+'function($packed, $ascii, $count, $keywords, $encode, $decode) {
+ while ($count--) {
+ if ($keywords[$count]) {
+ $packed = $packed.replace(new RegExp(\'\\\\b\' + $encode($count) + \'\\\\b\', \'g\'), $keywords[$count]);
+ }
+ }
+ return $packed;
+}';
+ /*
+ 'function($packed, $ascii, $count, $keywords, $encode, $decode) {
+ while ($count--)
+ if ($keywords[$count])
+ $packed = $packed.replace(new RegExp(\'\\\\b\' + $encode($count) + \'\\\\b\', \'g\'), $keywords[$count]);
+ return $packed;
+ }';
+ */
+
+ // code-snippet inserted into the unpacker to speed up decoding
+ const JSFUNCTION_decodeBody =
+//_decode = function() {
+// does the browser support String.replace where the
+// replacement value is a function?
+
+' if (!\'\'.replace(/^/, String)) {
+ // decode all the values we need
+ while ($count--) {
+ $decode[$encode($count)] = $keywords[$count] || $encode($count);
+ }
+ // global replacement function
+ $keywords = [function ($encoded) {return $decode[$encoded]}];
+ // generic match
+ $encode = function () {return \'\\\\w+\'};
+ // reset the loop counter - we are now doing a global replace
+ $count = 1;
+ }
+';
+ //};
+ /*
+ ' if (!\'\'.replace(/^/, String)) {
+ // decode all the values we need
+ while ($count--) $decode[$encode($count)] = $keywords[$count] || $encode($count);
+ // global replacement function
+ $keywords = [function ($encoded) {return $decode[$encoded]}];
+ // generic match
+ $encode = function () {return\'\\\\w+\'};
+ // reset the loop counter - we are now doing a global replace
+ $count = 1;
+ }';
+ */
+
+ // zero encoding
+ // characters: 0123456789
+ const JSFUNCTION_encode10 =
+'function($charCode) {
+ return $charCode;
+}'; //;';
+
+ // inherent base36 support
+ // characters: 0123456789abcdefghijklmnopqrstuvwxyz
+ const JSFUNCTION_encode36 =
+'function($charCode) {
+ return $charCode.toString(36);
+}'; //;';
+
+ // hitch a ride on base36 and add the upper case alpha characters
+ // characters: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
+ const JSFUNCTION_encode62 =
+'function($charCode) {
+ return ($charCode < _encoding ? \'\' : arguments.callee(parseInt($charCode / _encoding))) +
+ (($charCode = $charCode % _encoding) > 35 ? String.fromCharCode($charCode + 29) : $charCode.toString(36));
+}';
+
+ // use high-ascii values
+ // characters: ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþ
+ const JSFUNCTION_encode95 =
+'function($charCode) {
+ return ($charCode < _encoding ? \'\' : arguments.callee($charCode / _encoding)) +
+ String.fromCharCode($charCode % _encoding + 161);
+}';
+
+}
+
+
+class ParseMaster {
+ public $ignoreCase = false;
+ public $escapeChar = '';
+
+ // constants
+ const EXPRESSION = 0;
+ const REPLACEMENT = 1;
+ const LENGTH = 2;
+
+ // used to determine nesting levels
+ private $GROUPS = '/\\(/'; //g
+ private $SUB_REPLACE = '/\\$\\d/';
+ private $INDEXED = '/^\\$\\d+$/';
+ private $TRIM = '/([\'"])\\1\\.(.*)\\.\\1\\1$/';
+ private $ESCAPE = '/\\\./'; //g
+ private $QUOTE = '/\'/';
+ private $DELETED = '/\\x01[^\\x01]*\\x01/'; //g
+
+ public function add($expression, $replacement = '') {
+ // count the number of sub-expressions
+// - add one because each pattern is itself a sub-expression
+ $length = 1 + preg_match_all($this->GROUPS, $this->_internalEscape((string) $expression), $out);
+
+ // treat only strings $replacement
+ if (is_string($replacement)) {
+ // does the pattern deal with sub-expressions?
+ if (preg_match($this->SUB_REPLACE, $replacement)) {
+ // a simple lookup? (e.g. "$2")
+ if (preg_match($this->INDEXED, $replacement)) {
+ // store the index (used for fast retrieval of matched strings)
+ $replacement = (int) (substr($replacement, 1)) - 1;
+ }
+ else { // a complicated lookup (e.g. "Hello $2 $1")
+ // build a function to do the lookup
+ $quote = preg_match($this->QUOTE, $this->_internalEscape($replacement))
+ ? '"' : "'";
+ $replacement = array(
+ 'fn' => '_backReferences',
+ 'data' => array(
+ 'replacement' => $replacement,
+ 'length' => $length,
+ 'quote' => $quote,
+ ),
+ );
+ }
+ }
+ }
+ // pass the modified arguments
+ if (!empty($expression)) {
+ $this->_add($expression, $replacement, $length);
+ }
+ else {
+ $this->_add('/^$/', $replacement, $length);
+ }
+ }
+
+ public function exec($string) {
+ // execute the global replacement
+ $this->_escaped = array();
+
+ // simulate the _patterns.toSTring of Dean
+ $regexp = '/';
+ foreach ($this->_patterns as $reg) {
+ $regexp .= '(' . substr($reg[self::EXPRESSION], 1, -1) . ')|';
+ }
+ $regexp = substr($regexp, 0, -1) . '/';
+ $regexp .= ($this->ignoreCase) ? 'i' : '';
+
+ $string = $this->_escape($string, $this->escapeChar);
+ $string = preg_replace_callback(
+ $regexp,
+ array(
+ &$this,
+ '_replacement',
+ ),
+ $string
+ );
+ $string = $this->_unescape($string, $this->escapeChar);
+
+ return preg_replace($this->DELETED, '', $string);
+ }
+
+ public function reset() {
+ // clear the patterns collection so that this object may be re-used
+ $this->_patterns = array();
+ }
+
+ // private
+ private $_escaped = array(); // escaped characters
+ private $_patterns = array(); // patterns stored by index
+
+ // create and add a new pattern to the patterns collection
+ private function _add() {
+ $arguments = func_get_args();
+ $this->_patterns[] = $arguments;
+ }
+
+ // this is the global replace function (it's quite complicated)
+ private function _replacement($arguments) {
+ if (empty($arguments)) {
+ return '';
+ }
+
+ $i = 1;
+ $j = 0;
+ // loop through the patterns
+ while (isset($this->_patterns[$j])) {
+ $pattern = $this->_patterns[$j++];
+ // do we have a result?
+ if (isset($arguments[$i]) && ($arguments[$i] != '')) {
+ $replacement = $pattern[self::REPLACEMENT];
+
+ if (is_array($replacement) && isset($replacement['fn'])) {
+
+ if (isset($replacement['data'])) {
+ $this->buffer = $replacement['data'];
+ }
+ return call_user_func(array(&$this, $replacement['fn']), $arguments, $i);
+
+ }
+ elseif (is_int($replacement)) {
+ return $arguments[$replacement + $i];
+
+ }
+ $delete = ($this->escapeChar == '' ||
+ strpos($arguments[$i], $this->escapeChar) === false)
+ ? '' : "\x01" . $arguments[$i] . "\x01";
+ return $delete . $replacement;
+
+ // skip over references to sub-expressions
+ }
+ else {
+ $i += $pattern[self::LENGTH];
+ }
+ }
+ }
+
+ private function _backReferences($match, $offset) {
+ $replacement = $this->buffer['replacement'];
+ $quote = $this->buffer['quote'];
+ $i = $this->buffer['length'];
+ while ($i) {
+ $replacement = str_replace('$' . $i--, $match[$offset + $i], $replacement);
+ }
+ return $replacement;
+ }
+
+ private function _replace_name($match, $offset) {
+ $length = strlen($match[$offset + 2]);
+ $start = $length - max($length - strlen($match[$offset + 3]), 0);
+ return substr($match[$offset + 1], $start, $length) . $match[$offset + 4];
+ }
+
+ private function _replace_encoded($match, $offset) {
+ return $this->buffer[$match[$offset]];
+ }
+
+
+ // php : we cannot pass additional data to preg_replace_callback,
+ // and we cannot use &$this in create_function, so let's go to lower level
+ private $buffer;
+
+ // encode escaped characters
+ private function _escape($string, $escapeChar) {
+ if ($escapeChar) {
+ $this->buffer = $escapeChar;
+ return preg_replace_callback(
+ '/\\' . $escapeChar . '(.)' . '/',
+ array(&$this, '_escapeBis'),
+ $string
+ );
+
+ }
+ else {
+ return $string;
+ }
+ }
+ private function _escapeBis($match) {
+ $this->_escaped[] = $match[1];
+ return $this->buffer;
+ }
+
+ // decode escaped characters
+ private function _unescape($string, $escapeChar) {
+ if ($escapeChar) {
+ $regexp = '/' . '\\' . $escapeChar . '/';
+ $this->buffer = array(
+ 'escapeChar' => $escapeChar,
+ 'i' => 0,
+ );
+ return preg_replace_callback(
+ $regexp,
+ array(&$this, '_unescapeBis'),
+ $string
+ );
+
+ }
+ else {
+ return $string;
+ }
+ }
+ private function _unescapeBis() {
+ if (isset($this->_escaped[$this->buffer['i']])
+ && $this->_escaped[$this->buffer['i']] != '') {
+ $temp = $this->_escaped[$this->buffer['i']];
+ }
+ else {
+ $temp = '';
+ }
+ $this->buffer['i']++;
+ return $this->buffer['escapeChar'] . $temp;
+ }
+
+ private function _internalEscape($string) {
+ return preg_replace($this->ESCAPE, '', $string);
+ }
+}
projects / yaffs-website / blobdiff