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-rw-r--r--lib/jsmin.php375
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@@ -1,375 +0,0 @@
-<?php
-/**
- * jsmin.php - PHP implementation of Douglas Crockford's JSMin.
- *
- * This is pretty much a direct port of jsmin.c to PHP with just a few
- * PHP-specific performance tweaks. Also, whereas jsmin.c reads from stdin and
- * outputs to stdout, this library accepts a string as input and returns another
- * string as output.
- *
- * PHP 5 or higher is required.
- *
- * Permission is hereby granted to use this version of the library under the
- * same terms as jsmin.c, which has the following license:
- *
- * --
- * Copyright (c) 2002 Douglas Crockford (www.crockford.com)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
- * so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * The Software shall be used for Good, not Evil.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- * --
- *
- * @package JSMin
- * @author Ryan Grove <[email protected]>
- * @copyright 2002 Douglas Crockford <[email protected]> (jsmin.c)
- * @copyright 2008 Ryan Grove <[email protected]> (PHP port)
- * @license http://opensource.org/licenses/mit-license.php MIT License
- * @version 1.1.1 (2008-03-02)
- * @link https://github.com/rgrove/jsmin-php/
- */
-
-class JSMin {
- const ORD_LF = 10;
- const ORD_SPACE = 32;
- const ACTION_KEEP_A = 1;
- const ACTION_DELETE_A = 2;
- const ACTION_DELETE_A_B = 3;
-
- protected $a = '';
- protected $b = '';
- protected $input = '';
- protected $inputIndex = 0;
- protected $inputLength = 0;
- protected $lookAhead = null;
- protected $output = '';
-
- // -- Public Static Methods --------------------------------------------------
-
- /**
- * Minify Javascript
- *
- * @uses __construct()
- * @uses min()
- * @param string $js Javascript to be minified
- * @return string
- */
- public static function minify($js) {
- $jsmin = new JSMin($js);
- return $jsmin->min();
- }
-
- // -- Public Instance Methods ------------------------------------------------
-
- /**
- * Constructor
- *
- * @param string $input Javascript to be minified
- */
- public function __construct($input) {
- $this->input = str_replace("\r\n", "\n", $input);
- $this->inputLength = strlen($this->input);
- }
-
- // -- Protected Instance Methods ---------------------------------------------
-
- /**
- * Action -- do something! What to do is determined by the $command argument.
- *
- * action treats a string as a single character. Wow!
- * action recognizes a regular expression if it is preceded by ( or , or =.
- *
- * @uses next()
- * @uses get()
- * @throws JSMinException If parser errors are found:
- * - Unterminated string literal
- * - Unterminated regular expression set in regex literal
- * - Unterminated regular expression literal
- * @param int $command One of class constants:
- * ACTION_KEEP_A Output A. Copy B to A. Get the next B.
- * ACTION_DELETE_A Copy B to A. Get the next B. (Delete A).
- * ACTION_DELETE_A_B Get the next B. (Delete B).
- */
- protected function action($command) {
- switch($command) {
- case self::ACTION_KEEP_A:
- $this->output .= $this->a;
-
- case self::ACTION_DELETE_A:
- $this->a = $this->b;
-
- if ($this->a === "'" || $this->a === '"') {
- for (;;) {
- $this->output .= $this->a;
- $this->a = $this->get();
-
- if ($this->a === $this->b) {
- break;
- }
-
- if (ord($this->a) <= self::ORD_LF) {
- throw new JSMinException('Unterminated string literal.');
- }
-
- if ($this->a === '\\') {
- $this->output .= $this->a;
- $this->a = $this->get();
- }
- }
- }
-
- case self::ACTION_DELETE_A_B:
- $this->b = $this->next();
-
- if ($this->b === '/' && (
- $this->a === '(' || $this->a === ',' || $this->a === '=' ||
- $this->a === ':' || $this->a === '[' || $this->a === '!' ||
- $this->a === '&' || $this->a === '|' || $this->a === '?' ||
- $this->a === '{' || $this->a === '}' || $this->a === ';' ||
- $this->a === "\n" )) {
-
- $this->output .= $this->a . $this->b;
-
- for (;;) {
- $this->a = $this->get();
-
- if ($this->a === '[') {
- /*
- inside a regex [...] set, which MAY contain a '/' itself. Example: mootools Form.Validator near line 460:
- return Form.Validator.getValidator('IsEmpty').test(element) || (/^(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]\.?){0,63}[a-z0-9!#$%&'*+/=?^_`{|}~-]@(?:(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)*[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\])$/i).test(element.get('value'));
- */
- for (;;) {
- $this->output .= $this->a;
- $this->a = $this->get();
-
- if ($this->a === ']') {
- break;
- } elseif ($this->a === '\\') {
- $this->output .= $this->a;
- $this->a = $this->get();
- } elseif (ord($this->a) <= self::ORD_LF) {
- throw new JSMinException('Unterminated regular expression set in regex literal.');
- }
- }
- } elseif ($this->a === '/') {
- break;
- } elseif ($this->a === '\\') {
- $this->output .= $this->a;
- $this->a = $this->get();
- } elseif (ord($this->a) <= self::ORD_LF) {
- throw new JSMinException('Unterminated regular expression literal.');
- }
-
- $this->output .= $this->a;
- }
-
- $this->b = $this->next();
- }
- }
- }
-
- /**
- * Get next char. Convert ctrl char to space.
- *
- * @return string|null
- */
- protected function get() {
- $c = $this->lookAhead;
- $this->lookAhead = null;
-
- if ($c === null) {
- if ($this->inputIndex < $this->inputLength) {
- $c = substr($this->input, $this->inputIndex, 1);
- $this->inputIndex += 1;
- } else {
- $c = null;
- }
- }
-
- if ($c === "\r") {
- return "\n";
- }
-
- if ($c === null || $c === "\n" || ord($c) >= self::ORD_SPACE) {
- return $c;
- }
-
- return ' ';
- }
-
- /**
- * Is $c a letter, digit, underscore, dollar sign, or non-ASCII character.
- *
- * @return bool
- */
- protected function isAlphaNum($c) {
- return ord($c) > 126 || $c === '\\' || preg_match('/^[\w\$]$/', $c) === 1;
- }
-
- /**
- * Perform minification, return result
- *
- * @uses action()
- * @uses isAlphaNum()
- * @return string
- */
- protected function min() {
- $this->a = "\n";
- $this->action(self::ACTION_DELETE_A_B);
-
- while ($this->a !== null) {
- switch ($this->a) {
- case ' ':
- if ($this->isAlphaNum($this->b)) {
- $this->action(self::ACTION_KEEP_A);
- } else {
- $this->action(self::ACTION_DELETE_A);
- }
- break;
-
- case "\n":
- switch ($this->b) {
- case '{':
- case '[':
- case '(':
- case '+':
- case '-':
- $this->action(self::ACTION_KEEP_A);
- break;
-
- case ' ':
- $this->action(self::ACTION_DELETE_A_B);
- break;
-
- default:
- if ($this->isAlphaNum($this->b)) {
- $this->action(self::ACTION_KEEP_A);
- }
- else {
- $this->action(self::ACTION_DELETE_A);
- }
- }
- break;
-
- default:
- switch ($this->b) {
- case ' ':
- if ($this->isAlphaNum($this->a)) {
- $this->action(self::ACTION_KEEP_A);
- break;
- }
-
- $this->action(self::ACTION_DELETE_A_B);
- break;
-
- case "\n":
- switch ($this->a) {
- case '}':
- case ']':
- case ')':
- case '+':
- case '-':
- case '"':
- case "'":
- $this->action(self::ACTION_KEEP_A);
- break;
-
- default:
- if ($this->isAlphaNum($this->a)) {
- $this->action(self::ACTION_KEEP_A);
- }
- else {
- $this->action(self::ACTION_DELETE_A_B);
- }
- }
- break;
-
- default:
- $this->action(self::ACTION_KEEP_A);
- break;
- }
- }
- }
-
- return $this->output;
- }
-
- /**
- * Get the next character, skipping over comments. peek() is used to see
- * if a '/' is followed by a '/' or '*'.
- *
- * @uses get()
- * @uses peek()
- * @throws JSMinException On unterminated comment.
- * @return string
- */
- protected function next() {
- $c = $this->get();
-
- if ($c === '/') {
- switch($this->peek()) {
- case '/':
- for (;;) {
- $c = $this->get();
-
- if (ord($c) <= self::ORD_LF) {
- return $c;
- }
- }
-
- case '*':
- $this->get();
-
- for (;;) {
- switch($this->get()) {
- case '*':
- if ($this->peek() === '/') {
- $this->get();
- return ' ';
- }
- break;
-
- case null:
- throw new JSMinException('Unterminated comment.');
- }
- }
-
- default:
- return $c;
- }
- }
-
- return $c;
- }
-
- /**
- * Get next char. If is ctrl character, translate to a space or newline.
- *
- * @uses get()
- * @return string|null
- */
- protected function peek() {
- $this->lookAhead = $this->get();
- return $this->lookAhead;
- }
-}
-
-// -- Exceptions ---------------------------------------------------------------
-class JSMinException extends Exception {}
-?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 23:58:28 +0000