mirror of
https://we.phorge.it/source/phorge.git
synced 2024-12-25 06:50:55 +01:00
46 lines
1.5 KiB
PHP
46 lines
1.5 KiB
PHP
|
<?php
|
||
|
/** Remove spaces and comments from JavaScript code
|
||
|
* @param string code with commands terminated by semicolon
|
||
|
* @return string shrinked code
|
||
|
* @link http://vrana.github.com/JsShrink/
|
||
|
* @author Jakub Vrana, http://www.vrana.cz/
|
||
|
* @copyright 2007 Jakub Vrana
|
||
|
* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
|
||
|
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
|
||
|
*/
|
||
|
function jsShrink($input) {
|
||
|
return preg_replace_callback('(
|
||
|
(?:
|
||
|
(^|[-+\([{}=,:;!%^&*|?~]|/(?![/*])|return|throw) # context before regexp
|
||
|
(?:\s|//[^\n]*+\n|/\*(?:[^*]|\*(?!/))*+\*/)* # optional space
|
||
|
(/(?![/*])(?:\\\\[^\n]|[^[\n/\\\\]|\[(?:\\\\[^\n]|[^]])++)+/) # regexp
|
||
|
|(^
|
||
|
|\'(?:\\\\.|[^\n\'\\\\])*\'
|
||
|
|"(?:\\\\.|[^\n"\\\\])*"
|
||
|
|([0-9A-Za-z_$]+)
|
||
|
|([-+]+)
|
||
|
|.
|
||
|
)
|
||
|
)(?:\s|//[^\n]*+\n|/\*(?:[^*]|\*(?!/))*+\*/)* # optional space
|
||
|
)sx', 'jsShrinkCallback', "$input\n");
|
||
|
}
|
||
|
|
||
|
function jsShrinkCallback($match) {
|
||
|
static $last = '';
|
||
|
$match += array_fill(1, 5, null); // avoid E_NOTICE
|
||
|
list(, $context, $regexp, $result, $word, $operator) = $match;
|
||
|
if ($word != '') {
|
||
|
$result = ($last == 'word' ? "\n" : ($last == 'return' ? " " : "")) . $result;
|
||
|
$last = ($word == 'return' || $word == 'throw' || $word == 'break' ? 'return' : 'word');
|
||
|
} elseif ($operator) {
|
||
|
$result = ($last == $operator[0] ? "\n" : "") . $result;
|
||
|
$last = $operator[0];
|
||
|
} else {
|
||
|
if ($regexp) {
|
||
|
$result = $context . ($context == '/' ? "\n" : "") . $regexp;
|
||
|
}
|
||
|
$last = '';
|
||
|
}
|
||
|
return $result;
|
||
|
}
|