PK ^GMp< example-inline.phpnu W+A pack();
$t2 = microtime(true);
$originalLength = strlen($script);
$packedLength = strlen($packed);
$ratio = number_format($packedLength / $originalLength, 3);
$time = sprintf('%.4f', ($t2 - $t1) );
$treat = true;
}
?>
JavaScript Packer in PHP
packed result:
compression ratio:
performed in s.
PK ^GMKϳO<[ <[ class.JavaScriptPacker.php4nu W+A 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 :
* # [del]need PHP 5 . Tested with PHP 5.1.2[/del]
* this is a modified version for PHP 4
*
* # 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...
*/
/*
* modified by Mark Fabrizio Jr. to work with php 4
*/
class JavaScriptPacker {
var $IGNORE = '$1';
// validate parameters
var $_script = '';
var $_encoding = 62;
var $_fastDecode = true;
var $_specialChars = false;
var $LITERAL_ENCODING = array(
'None' => 0,
'Numeric' => 10,
'Normal' => 62,
'High ASCII' => 95
);
function JavaScriptPacker($_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;
}
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
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
var $_parsers = array();
function _addParser($parser) {
$this->_parsers[] = $parser;
}
// zero encoding - just removal of white space and comments
function _basicCompression($script) {
$parser = new ParseMaster();
// make safe
$parser->escapeChar = '\\';
// protect strings
$parser->add('/\'[^\'\\n\\r]*\'/',$this->IGNORE);
$parser->add('/"[^"\\n\\r]*"/', $this->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?/', $this->IGNORE);
// remove: ;;; doSomething();
if ($this->_specialChars) $parser->add('/;;;[^\\n\\r]+[\\n\\r]/');
// remove redundant semi-colons
$parser->add('/\\(;;\\)/', $this->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);
}
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);
}
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);
}
}
function _analyze($script, $regexp, $encode) {
// analyse
// retreive 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);
}
var $_count = array();
function _sortWords($match1, $match2) {
return $this->_count[$match2] - $this->_count[$match1];
}
// build the boot function used for loading and decoding
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";
}
var $buffer;
function _insertFastDecode($match) {
return '{' . $this->buffer . ';';
}
function _insertFastEncode($match) {
return '{$encode=' . $this->buffer . ';';
}
// mmm.. ..which one do i need ??
function _getEncoder($ascii) {
return $ascii > 10 ? $ascii > 36 ? $ascii > 62 ?
'_encode95' : '_encode62' : '_encode36' : '_encode10';
}
// zero encoding
// characters: 0123456789
function _encode10($charCode) {
return $charCode;
}
// inherent base36 support
// characters: 0123456789abcdefghijklmnopqrstuvwxyz
function _encode36($charCode) {
return base_convert($charCode, 10, 36);
}
// hitch a ride on base36 and add the upper case alpha characters
// characters: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
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¿À?ÂÃÄÅÆÇÈÉÊËÌ?Î??ÑÒÓÔÕÖ×ØÙÚÛÜ?Þßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþ
function _encode95($charCode) {
$res = '';
if ($charCode >= $this->_encoding)
$res = $this->_encode95($charCode / $this->_encoding);
return $res . chr(($charCode % $this->_encoding) + 161);
}
function _safeRegExp($string) {
return '/'.preg_replace('/\$/', '\\\$', $string).'/';
}
function _encodePrivate($charCode) {
return "_" . $charCode;
}
// protect characters used by the parser
function _escape($script) {
return preg_replace('/([\\\\\'])/', '\\\$1', $script);
}
// protect high-ascii characters already in the script
function _escape95($script) {
return preg_replace_callback(
'/[\\xa1-\\xff]/',
array(&$this, '_escape95Bis'),
$script
);
}
function _escape95Bis($match) {
return '\x'.((string)dechex(ord($match)));
}
function _getJSFunction($aName) {
$func = 'JSFUNCTION'.$aName;
if (isset($this->$func)){
return $this->$func;
}
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.
var $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
var $JSFUNCTION_decodeBody = ' 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
var $JSFUNCTION_encode10 = 'function($charCode) {
return $charCode;
}';//;';
// inherent base36 support
// characters: 0123456789abcdefghijklmnopqrstuvwxyz
var $JSFUNCTION_encode36 = 'function($charCode) {
return $charCode.toString(36);
}';//;';
// hitch a ride on base36 and add the upper case alpha characters
// characters: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
var $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¿À?ÂÃÄÅÆÇÈÉÊËÌ?Î??ÑÒÓÔÕÖ×ØÙÚÛÜ?Þßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþ
var $JSFUNCTION_encode95 = 'function($charCode) {
return ($charCode < _encoding ? \'\' : arguments.callee($charCode / _encoding)) +
String.fromCharCode($charCode % _encoding + 161);
}';
}
class ParseMaster {
var $ignoreCase = false;
var $escapeChar = '';
// constants
var $EXPRESSION = 0;
var $REPLACEMENT = 1;
var $LENGTH = 2;
// used to determine nesting levels
var $GROUPS = '/\\(/';//g
var $SUB_REPLACE = '/\\$\\d/';
var $INDEXED = '/^\\$\\d+$/';
var $TRIM = '/([\'"])\\1\\.(.*)\\.\\1\\1$/';
var $ESCAPE = '/\\\./';//g
var $QUOTE = '/\'/';
var $DELETED = '/\\x01[^\\x01]*\\x01/';//g
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);
}
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[$this->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);
}
function reset() {
// clear the patterns collection so that this object may be re-used
$this->_patterns = array();
}
// private
var $_escaped = array(); // escaped characters
var $_patterns = array(); // patterns stored by index
// create and add a new pattern to the patterns collection
function _add() {
$arguments = func_get_args();
$this->_patterns[] = $arguments;
}
// this is the global replace function (it's quite complicated)
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[$this->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[$this->LENGTH];
}
}
}
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;
}
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];
}
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
var $buffer;
// encode escaped characters
function _escape($string, $escapeChar) {
if ($escapeChar) {
$this->buffer = $escapeChar;
return preg_replace_callback(
'/\\' . $escapeChar . '(.)' .'/',
array(&$this, '_escapeBis'),
$string
);
} else {
return $string;
}
}
function _escapeBis($match) {
$this->_escaped[] = $match[1];
return $this->buffer;
}
// decode escaped characters
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;
}
}
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;
}
function _internalEscape($string) {
return preg_replace($this->ESCAPE, '', $string);
}
}
?>
PK ^GMg?^
readme.txtnu W+A PHP 5 :
use class.JavaScriptPacker.php (Tested under PHP 5.1.2, 5.1.3, 5.1.4, 5.2.3.)
- usage and comments in source.
- there is 2 examples in this archive for PHP 5,
'example-file.php' and example-inline.php
PHP 4 :
use class.JavaScriptPacker.php4, it's an adaptation for PHP4.
The examples in this archive will not work directly with PHP 4, they are
writed in PHP5, you'll need to adapt them. If some functions are missing in
PHP 4, you can find their equivalent here :
http://pear.php.net/package/PHP_Compat
PK ^GM!s
.gitignorenu W+A .ideaPK ^GME)5\ \ class.JavaScriptPacker.phpnu W+A 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
// retreive 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);
}
}
?>
PK ^GMc(9 9 example-file.phpnu W+A = 3) {
$src = $argv[1];
$out = $argv[2];
} else {
echo 'you must specify a source file and a result filename',"\n";
echo 'example :', "\n", 'php example-file.php myScript-src.js myPackedScript.js',"\n";
return;
}
*/
require 'class.JavaScriptPacker.php';
$script = file_get_contents($src);
$t1 = microtime(true);
$packer = new JavaScriptPacker($script, 'Normal', true, false);
$packed = $packer->pack();
$t2 = microtime(true);
$time = sprintf('%.4f', ($t2 - $t1) );
echo 'script ', $src, ' packed in ' , $out, ', in ', $time, ' s.', "\n";
file_put_contents($out, $packed);
?>
PK ^GMY
composer.jsonnu W+A {
"name": "meenie/javascript-packer",
"description": "Composer hosted mirror of the PHP Version of Dean Edwards' JavaScript Packer",
"keywords": ["javascript packer"],
"homepage": "http://joliclic.free.fr/php/javascript-packer/en/",
"license": "LGPL 2.1",
"authors": [
{
"name": "Nicolas Martin",
"role": "Developer"
}
],
"autoload": {
"files": ["class.JavaScriptPacker.php"]
}
}PK ^GMp< example-inline.phpnu W+A PK ^GMKϳO<[ <[ class.JavaScriptPacker.php4nu W+A PK ^GMg?^
g readme.txtnu W+A PK ^GM!s
i .gitignorenu W+A PK ^GME)5\ \ "j class.JavaScriptPacker.phpnu W+A PK ^GMc(9 9 example-file.phpnu W+A PK ^GMY
{ composer.jsonnu W+A PK 8