+++ /dev/null
-<?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 <ryan@wonko.com>
- * @copyright 2002 Douglas Crockford <douglas@crockford.com> (jsmin.c)
- * @copyright 2008 Ryan Grove <ryan@wonko.com> (PHP port)
- * @license http://opensource.org/licenses/mit-license.php MIT License
- * @version 1.1.1 (2008-03-02)
- * @link http://code.google.com/p/jsmin-php/
- */
-
-class JSMin {
- const ORD_LF = 10;
- const ORD_SPACE = 32;
-
- protected $a = '';
- protected $b = '';
- protected $input = '';
- protected $inputIndex = 0;
- protected $inputLength = 0;
- protected $lookAhead = null;
- protected $output = '';
-
- // -- Public Static Methods --------------------------------------------------
-
- public static function minify( $js ) {
- $jsmin = new JSMin( $js );
- return $jsmin->min();
- }
-
- // -- Public Instance Methods ------------------------------------------------
-
- public function __construct( $input ) {
- $this->input = str_replace( "\r\n", "\n", $input );
- $this->inputLength = strlen( $this->input );
- }
-
- // -- Protected Instance Methods ---------------------------------------------
-
- protected function action( $d ) {
- switch( $d ) {
- case 1:
- $this->output .= $this->a;
-
- case 2:
- $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 3:
- $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->output .= $this->a . $this->b;
-
- for ( ; ; ) {
- $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 ' .
- 'literal.' );
- }
-
- $this->output .= $this->a;
- }
-
- $this->b = $this->next();
- }
- }
- }
-
- 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 ' ';
- }
-
- protected function isAlphaNum( $c ) {
- return ord( $c ) > 126 || $c === '\\' || preg_match( '/^[\w\$]$/', $c ) === 1;
- }
-
- protected function min() {
- $this->a = "\n";
- $this->action( 3 );
-
- while ( $this->a !== null ) {
- switch ( $this->a ) {
- case ' ':
- if ( $this->isAlphaNum( $this->b ) ) {
- $this->action( 1 );
- } else {
- $this->action( 2 );
- }
- break;
-
- case "\n":
- switch ( $this->b ) {
- case '{':
- case '[':
- case '(':
- case '+':
- case '-':
- $this->action( 1 );
- break;
-
- case ' ':
- $this->action( 3 );
- break;
-
- default:
- if ( $this->isAlphaNum( $this->b ) ) {
- $this->action( 1 );
- }
- else {
- $this->action( 2 );
- }
- }
- break;
-
- default:
- switch ( $this->b ) {
- case ' ':
- if ( $this->isAlphaNum( $this->a ) ) {
- $this->action( 1 );
- break;
- }
-
- $this->action( 3 );
- break;
-
- case "\n":
- switch ( $this->a ) {
- case '}':
- case ']':
- case ')':
- case '+':
- case '-':
- case '"':
- case "'":
- $this->action( 1 );
- break;
-
- default:
- if ( $this->isAlphaNum( $this->a ) ) {
- $this->action( 1 );
- }
- else {
- $this->action( 3 );
- }
- }
- break;
-
- default:
- $this->action( 1 );
- break;
- }
- }
- }
-
- return $this->output;
- }
-
- 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;
- }
-
- protected function peek() {
- $this->lookAhead = $this->get();
- return $this->lookAhead;
- }
-}
-
-// -- Exceptions ---------------------------------------------------------------
-class JSMinException extends Exception {}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff