基于HTML实现其他类别网站_jsmin v1.1.1.php_jsmin(HTML源码+数据集+项目使用说明).rar

<?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 = $this->input[$this->inputIndex]; $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 {} ?>