From: Andrew Dolgov Date: Wed, 20 Jun 2018 12:04:59 +0000 (+0300) Subject: move JShrink Minifier to vendor/ X-Git-Tag: 18.8~21 X-Git-Url: https://git.wh0rd.org/?a=commitdiff_plain;h=a9105e2a619c499509c27ac263b306e86ef247b5;p=tt-rss.git move JShrink Minifier to vendor/ --- diff --git a/include/functions.php b/include/functions.php index a6dbd43a..7ebbe38b 100755 --- a/include/functions.php +++ b/include/functions.php @@ -2386,7 +2386,6 @@ } function get_minified_js($files) { - require_once 'lib/jshrink/Minifier.php'; $rv = ''; diff --git a/index.php b/index.php index fb24066f..cba52284 100644 --- a/index.php +++ b/index.php @@ -113,8 +113,6 @@ 'use strict'; require({cache:{}}); diff --git a/lib/jshrink/LICENSE b/lib/jshrink/LICENSE deleted file mode 100644 index 68caa37c..00000000 --- a/lib/jshrink/LICENSE +++ /dev/null @@ -1,24 +0,0 @@ -Copyright (c) 2009, Robert Hafner -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - * Neither the name of the Stash Project nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND -ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -DISCLAIMED. IN NO EVENT SHALL Robert Hafner BE LIABLE FOR ANY -DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. \ No newline at end of file diff --git a/lib/jshrink/Minifier.php b/lib/jshrink/Minifier.php deleted file mode 100644 index 86734dab..00000000 --- a/lib/jshrink/Minifier.php +++ /dev/null @@ -1,587 +0,0 @@ - - * - * For the full copyright and license information, please view the LICENSE - * file that was distributed with this source code. - */ - -/** - * JShrink - * - * - * @package JShrink - * @author Robert Hafner - */ - -namespace JShrink; - -/** - * Minifier - * - * Usage - Minifier::minify($js); - * Usage - Minifier::minify($js, $options); - * Usage - Minifier::minify($js, array('flaggedComments' => false)); - * - * @package JShrink - * @author Robert Hafner - * @license http://www.opensource.org/licenses/bsd-license.php BSD License - */ -class Minifier -{ - /** - * The input javascript to be minified. - * - * @var string - */ - protected $input; - - /** - * The location of the character (in the input string) that is next to be - * processed. - * - * @var int - */ - protected $index = 0; - - /** - * The first of the characters currently being looked at. - * - * @var string - */ - protected $a = ''; - - /** - * The next character being looked at (after a); - * - * @var string - */ - protected $b = ''; - - /** - * This character is only active when certain look ahead actions take place. - * - * @var string - */ - protected $c; - - /** - * Contains the options for the current minification process. - * - * @var array - */ - protected $options; - - /** - * Contains the default options for minification. This array is merged with - * the one passed in by the user to create the request specific set of - * options (stored in the $options attribute). - * - * @var array - */ - protected static $defaultOptions = array('flaggedComments' => true); - - /** - * Contains lock ids which are used to replace certain code patterns and - * prevent them from being minified - * - * @var array - */ - protected $locks = array(); - - /** - * Takes a string containing javascript and removes unneeded characters in - * order to shrink the code without altering it's functionality. - * - * @param string $js The raw javascript to be minified - * @param array $options Various runtime options in an associative array - * @throws \Exception - * @return bool|string - */ - public static function minify($js, $options = array()) - { - try { - ob_start(); - - $jshrink = new Minifier(); - $js = $jshrink->lock($js); - $jshrink->minifyDirectToOutput($js, $options); - - // Sometimes there's a leading new line, so we trim that out here. - $js = ltrim(ob_get_clean()); - $js = $jshrink->unlock($js); - unset($jshrink); - - return $js; - - } catch (\Exception $e) { - - if (isset($jshrink)) { - // Since the breakdownScript function probably wasn't finished - // we clean it out before discarding it. - $jshrink->clean(); - unset($jshrink); - } - - // without this call things get weird, with partially outputted js. - ob_end_clean(); - throw $e; - } - } - - /** - * Processes a javascript string and outputs only the required characters, - * stripping out all unneeded characters. - * - * @param string $js The raw javascript to be minified - * @param array $options Various runtime options in an associative array - */ - protected function minifyDirectToOutput($js, $options) - { - $this->initialize($js, $options); - $this->loop(); - $this->clean(); - } - - /** - * Initializes internal variables, normalizes new lines, - * - * @param string $js The raw javascript to be minified - * @param array $options Various runtime options in an associative array - */ - protected function initialize($js, $options) - { - $this->options = array_merge(static::$defaultOptions, $options); - $js = str_replace("\r\n", "\n", $js); - $js = str_replace('/**/', '', $js); - $this->input = str_replace("\r", "\n", $js); - - // We add a newline to the end of the script to make it easier to deal - // with comments at the bottom of the script- this prevents the unclosed - // comment error that can otherwise occur. - $this->input .= PHP_EOL; - - // Populate "a" with a new line, "b" with the first character, before - // entering the loop - $this->a = "\n"; - $this->b = $this->getReal(); - } - - /** - * The primary action occurs here. This function loops through the input string, - * outputting anything that's relevant and discarding anything that is not. - */ - protected function loop() - { - while ($this->a !== false && !is_null($this->a) && $this->a !== '') { - - switch ($this->a) { - // new lines - case "\n": - // if the next line is something that can't stand alone preserve the newline - if (strpos('(-+{[@', $this->b) !== false) { - echo $this->a; - $this->saveString(); - break; - } - - // if B is a space we skip the rest of the switch block and go down to the - // string/regex check below, resetting $this->b with getReal - if($this->b === ' ') - break; - - // otherwise we treat the newline like a space - - case ' ': - if(static::isAlphaNumeric($this->b)) - echo $this->a; - - $this->saveString(); - break; - - default: - switch ($this->b) { - case "\n": - if (strpos('}])+-"\'', $this->a) !== false) { - echo $this->a; - $this->saveString(); - break; - } else { - if (static::isAlphaNumeric($this->a)) { - echo $this->a; - $this->saveString(); - } - } - break; - - case ' ': - if(!static::isAlphaNumeric($this->a)) - break; - - default: - // check for some regex that breaks stuff - if ($this->a === '/' && ($this->b === '\'' || $this->b === '"')) { - $this->saveRegex(); - continue; - } - - echo $this->a; - $this->saveString(); - break; - } - } - - // do reg check of doom - $this->b = $this->getReal(); - - if(($this->b == '/' && strpos('(,=:[!&|?', $this->a) !== false)) - $this->saveRegex(); - } - } - - /** - * Resets attributes that do not need to be stored between requests so that - * the next request is ready to go. Another reason for this is to make sure - * the variables are cleared and are not taking up memory. - */ - protected function clean() - { - unset($this->input); - $this->index = 0; - $this->a = $this->b = ''; - unset($this->c); - unset($this->options); - } - - /** - * Returns the next string for processing based off of the current index. - * - * @return string - */ - protected function getChar() - { - // Check to see if we had anything in the look ahead buffer and use that. - if (isset($this->c)) { - $char = $this->c; - unset($this->c); - - // Otherwise we start pulling from the input. - } else { - $char = substr($this->input, $this->index, 1); - - // If the next character doesn't exist return false. - if (isset($char) && $char === false) { - return false; - } - - // Otherwise increment the pointer and use this char. - $this->index++; - } - - // Normalize all whitespace except for the newline character into a - // standard space. - if($char !== "\n" && ord($char) < 32) - - return ' '; - - return $char; - } - - /** - * This function gets the next "real" character. It is essentially a wrapper - * around the getChar function that skips comments. This has significant - * performance benefits as the skipping is done using native functions (ie, - * c code) rather than in script php. - * - * - * @return string Next 'real' character to be processed. - * @throws \RuntimeException - */ - protected function getReal() - { - $startIndex = $this->index; - $char = $this->getChar(); - - // Check to see if we're potentially in a comment - if ($char !== '/') { - return $char; - } - - $this->c = $this->getChar(); - - if ($this->c === '/') { - return $this->processOneLineComments($startIndex); - - } elseif ($this->c === '*') { - return $this->processMultiLineComments($startIndex); - } - - return $char; - } - - /** - * Removed one line comments, with the exception of some very specific types of - * conditional comments. - * - * @param int $startIndex The index point where "getReal" function started - * @return string - */ - protected function processOneLineComments($startIndex) - { - $thirdCommentString = substr($this->input, $this->index, 1); - - // kill rest of line - $this->getNext("\n"); - - if ($thirdCommentString == '@') { - $endPoint = $this->index - $startIndex; - unset($this->c); - $char = "\n" . substr($this->input, $startIndex, $endPoint); - } else { - // first one is contents of $this->c - $this->getChar(); - $char = $this->getChar(); - } - - return $char; - } - - /** - * Skips multiline comments where appropriate, and includes them where needed. - * Conditional comments and "license" style blocks are preserved. - * - * @param int $startIndex The index point where "getReal" function started - * @return bool|string False if there's no character - * @throws \RuntimeException Unclosed comments will throw an error - */ - protected function processMultiLineComments($startIndex) - { - $this->getChar(); // current C - $thirdCommentString = $this->getChar(); - - // kill everything up to the next */ if it's there - if ($this->getNext('*/')) { - - $this->getChar(); // get * - $this->getChar(); // get / - $char = $this->getChar(); // get next real character - - // Now we reinsert conditional comments and YUI-style licensing comments - if (($this->options['flaggedComments'] && $thirdCommentString === '!') - || ($thirdCommentString === '@') ) { - - // If conditional comments or flagged comments are not the first thing in the script - // we need to echo a and fill it with a space before moving on. - if ($startIndex > 0) { - echo $this->a; - $this->a = " "; - - // If the comment started on a new line we let it stay on the new line - if ($this->input[($startIndex - 1)] === "\n") { - echo "\n"; - } - } - - $endPoint = ($this->index - 1) - $startIndex; - echo substr($this->input, $startIndex, $endPoint); - - return $char; - } - - } else { - $char = false; - } - - if($char === false) - throw new \RuntimeException('Unclosed multiline comment at position: ' . ($this->index - 2)); - - // if we're here c is part of the comment and therefore tossed - if(isset($this->c)) - unset($this->c); - - return $char; - } - - /** - * Pushes the index ahead to the next instance of the supplied string. If it - * is found the first character of the string is returned and the index is set - * to it's position. - * - * @param string $string - * @return string|false Returns the first character of the string or false. - */ - protected function getNext($string) - { - // Find the next occurrence of "string" after the current position. - $pos = strpos($this->input, $string, $this->index); - - // If it's not there return false. - if($pos === false) - - return false; - - // Adjust position of index to jump ahead to the asked for string - $this->index = $pos; - - // Return the first character of that string. - return substr($this->input, $this->index, 1); - } - - /** - * When a javascript string is detected this function crawls for the end of - * it and saves the whole string. - * - * @throws \RuntimeException Unclosed strings will throw an error - */ - protected function saveString() - { - $startpos = $this->index; - - // saveString is always called after a gets cleared, so we push b into - // that spot. - $this->a = $this->b; - - // If this isn't a string we don't need to do anything. - if ($this->a !== "'" && $this->a !== '"') { - return; - } - - // String type is the quote used, " or ' - $stringType = $this->a; - - // Echo out that starting quote - echo $this->a; - - // Loop until the string is done - while (true) { - - // Grab the very next character and load it into a - $this->a = $this->getChar(); - - switch ($this->a) { - - // If the string opener (single or double quote) is used - // output it and break out of the while loop- - // The string is finished! - case $stringType: - break 2; - - // New lines in strings without line delimiters are bad- actual - // new lines will be represented by the string \n and not the actual - // character, so those will be treated just fine using the switch - // block below. - case "\n": - throw new \RuntimeException('Unclosed string at position: ' . $startpos ); - break; - - // Escaped characters get picked up here. If it's an escaped new line it's not really needed - case '\\': - - // a is a slash. We want to keep it, and the next character, - // unless it's a new line. New lines as actual strings will be - // preserved, but escaped new lines should be reduced. - $this->b = $this->getChar(); - - // If b is a new line we discard a and b and restart the loop. - if ($this->b === "\n") { - break; - } - - // echo out the escaped character and restart the loop. - echo $this->a . $this->b; - break; - - - // Since we're not dealing with any special cases we simply - // output the character and continue our loop. - default: - echo $this->a; - } - } - } - - /** - * When a regular expression is detected this function crawls for the end of - * it and saves the whole regex. - * - * @throws \RuntimeException Unclosed regex will throw an error - */ - protected function saveRegex() - { - echo $this->a . $this->b; - - while (($this->a = $this->getChar()) !== false) { - if($this->a === '/') - break; - - if ($this->a === '\\') { - echo $this->a; - $this->a = $this->getChar(); - } - - if($this->a === "\n") - throw new \RuntimeException('Unclosed regex pattern at position: ' . $this->index); - - echo $this->a; - } - $this->b = $this->getReal(); - } - - /** - * Checks to see if a character is alphanumeric. - * - * @param string $char Just one character - * @return bool - */ - protected static function isAlphaNumeric($char) - { - return preg_match('/^[\w\$\pL]$/', $char) === 1 || $char == '/'; - } - - /** - * Replace patterns in the given string and store the replacement - * - * @param string $js The string to lock - * @return bool - */ - protected function lock($js) - { - /* lock things like "asd" + ++x; */ - $lock = '"LOCK---' . crc32(time()) . '"'; - - $matches = array(); - preg_match('/([+-])(\s+)([+-])/S', $js, $matches); - if (empty($matches)) { - return $js; - } - - $this->locks[$lock] = $matches[2]; - - $js = preg_replace('/([+-])\s+([+-])/S', "$1{$lock}$2", $js); - /* -- */ - - return $js; - } - - /** - * Replace "locks" with the original characters - * - * @param string $js The string to unlock - * @return bool - */ - protected function unlock($js) - { - if (empty($this->locks)) { - return $js; - } - - foreach ($this->locks as $lock => $replacement) { - $js = str_replace($lock, $replacement, $js); - } - - return $js; - } - -} diff --git a/lib/jshrink/README.md b/lib/jshrink/README.md deleted file mode 100644 index 940af38c..00000000 --- a/lib/jshrink/README.md +++ /dev/null @@ -1,61 +0,0 @@ -# JShrink [![Build Status](https://travis-ci.org/tedious/JShrink.svg?branch=master)](https://travis-ci.org/tedivm/JShrink) - -[![License](http://img.shields.io/packagist/l/tedivm/JShrink.svg)](https://github.com/tedivm/JShrink/blob/master/LICENSE) -[![Latest Stable Version](http://img.shields.io/github/release/tedious/JShrink.svg)](https://packagist.org/packages/tedivm/JShrink) -[![Coverage Status](https://coveralls.io/repos/tedious/JShrink/badge.png?branch=master)](https://coveralls.io/r/tedivm/JShrink?branch=master) -[![Total Downloads](http://img.shields.io/packagist/dt/tedivm/jshrink.svg)](https://packagist.org/packages/tedivm/JShrink) - - -JShrink is a php class that minifies javascript so that it can be delivered to the client quicker. This code can be used -by any product looking to minify their javascript on the fly (although caching the results is suggested for performance -reasons). Unlike many other products this is not a port into php but a native application, resulting in better -performance. - - -## Usage - -Minifying your code is simple call to a static function- - -```php - false)); -``` - - -## Results - -* Raw - 586,990 -* Gzip - 151,301 -* JShrink - 371,982 -* JShrink and Gzip - 93,507 - - -## Installing - -### Composer - -Installing JShrink can be done through a variety of methods, although Composer is -recommended. - -```yaml -"require": { - "tedivm/jshrink": "~1.0" -} -``` - -### Github - -Releases of JShrink are available on [Github](https://github.com/tedious/JShrink/releases). - - -## License - -JShrink is licensed under the BSD License. See the LICENSE file for details. - -In the spirit of open source, use of this library for evil is discouraged but not prohibited. diff --git a/prefs.php b/prefs.php index 89e5f4c2..2b1270f1 100644 --- a/prefs.php +++ b/prefs.php @@ -80,8 +80,6 @@ 'use strict'; require({cache:{}}); diff --git a/vendor/JShrink/LICENSE b/vendor/JShrink/LICENSE new file mode 100644 index 00000000..68caa37c --- /dev/null +++ b/vendor/JShrink/LICENSE @@ -0,0 +1,24 @@ +Copyright (c) 2009, Robert Hafner +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the Stash Project nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL Robert Hafner BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. \ No newline at end of file diff --git a/vendor/JShrink/Minifier.php b/vendor/JShrink/Minifier.php new file mode 100644 index 00000000..86734dab --- /dev/null +++ b/vendor/JShrink/Minifier.php @@ -0,0 +1,587 @@ + + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +/** + * JShrink + * + * + * @package JShrink + * @author Robert Hafner + */ + +namespace JShrink; + +/** + * Minifier + * + * Usage - Minifier::minify($js); + * Usage - Minifier::minify($js, $options); + * Usage - Minifier::minify($js, array('flaggedComments' => false)); + * + * @package JShrink + * @author Robert Hafner + * @license http://www.opensource.org/licenses/bsd-license.php BSD License + */ +class Minifier +{ + /** + * The input javascript to be minified. + * + * @var string + */ + protected $input; + + /** + * The location of the character (in the input string) that is next to be + * processed. + * + * @var int + */ + protected $index = 0; + + /** + * The first of the characters currently being looked at. + * + * @var string + */ + protected $a = ''; + + /** + * The next character being looked at (after a); + * + * @var string + */ + protected $b = ''; + + /** + * This character is only active when certain look ahead actions take place. + * + * @var string + */ + protected $c; + + /** + * Contains the options for the current minification process. + * + * @var array + */ + protected $options; + + /** + * Contains the default options for minification. This array is merged with + * the one passed in by the user to create the request specific set of + * options (stored in the $options attribute). + * + * @var array + */ + protected static $defaultOptions = array('flaggedComments' => true); + + /** + * Contains lock ids which are used to replace certain code patterns and + * prevent them from being minified + * + * @var array + */ + protected $locks = array(); + + /** + * Takes a string containing javascript and removes unneeded characters in + * order to shrink the code without altering it's functionality. + * + * @param string $js The raw javascript to be minified + * @param array $options Various runtime options in an associative array + * @throws \Exception + * @return bool|string + */ + public static function minify($js, $options = array()) + { + try { + ob_start(); + + $jshrink = new Minifier(); + $js = $jshrink->lock($js); + $jshrink->minifyDirectToOutput($js, $options); + + // Sometimes there's a leading new line, so we trim that out here. + $js = ltrim(ob_get_clean()); + $js = $jshrink->unlock($js); + unset($jshrink); + + return $js; + + } catch (\Exception $e) { + + if (isset($jshrink)) { + // Since the breakdownScript function probably wasn't finished + // we clean it out before discarding it. + $jshrink->clean(); + unset($jshrink); + } + + // without this call things get weird, with partially outputted js. + ob_end_clean(); + throw $e; + } + } + + /** + * Processes a javascript string and outputs only the required characters, + * stripping out all unneeded characters. + * + * @param string $js The raw javascript to be minified + * @param array $options Various runtime options in an associative array + */ + protected function minifyDirectToOutput($js, $options) + { + $this->initialize($js, $options); + $this->loop(); + $this->clean(); + } + + /** + * Initializes internal variables, normalizes new lines, + * + * @param string $js The raw javascript to be minified + * @param array $options Various runtime options in an associative array + */ + protected function initialize($js, $options) + { + $this->options = array_merge(static::$defaultOptions, $options); + $js = str_replace("\r\n", "\n", $js); + $js = str_replace('/**/', '', $js); + $this->input = str_replace("\r", "\n", $js); + + // We add a newline to the end of the script to make it easier to deal + // with comments at the bottom of the script- this prevents the unclosed + // comment error that can otherwise occur. + $this->input .= PHP_EOL; + + // Populate "a" with a new line, "b" with the first character, before + // entering the loop + $this->a = "\n"; + $this->b = $this->getReal(); + } + + /** + * The primary action occurs here. This function loops through the input string, + * outputting anything that's relevant and discarding anything that is not. + */ + protected function loop() + { + while ($this->a !== false && !is_null($this->a) && $this->a !== '') { + + switch ($this->a) { + // new lines + case "\n": + // if the next line is something that can't stand alone preserve the newline + if (strpos('(-+{[@', $this->b) !== false) { + echo $this->a; + $this->saveString(); + break; + } + + // if B is a space we skip the rest of the switch block and go down to the + // string/regex check below, resetting $this->b with getReal + if($this->b === ' ') + break; + + // otherwise we treat the newline like a space + + case ' ': + if(static::isAlphaNumeric($this->b)) + echo $this->a; + + $this->saveString(); + break; + + default: + switch ($this->b) { + case "\n": + if (strpos('}])+-"\'', $this->a) !== false) { + echo $this->a; + $this->saveString(); + break; + } else { + if (static::isAlphaNumeric($this->a)) { + echo $this->a; + $this->saveString(); + } + } + break; + + case ' ': + if(!static::isAlphaNumeric($this->a)) + break; + + default: + // check for some regex that breaks stuff + if ($this->a === '/' && ($this->b === '\'' || $this->b === '"')) { + $this->saveRegex(); + continue; + } + + echo $this->a; + $this->saveString(); + break; + } + } + + // do reg check of doom + $this->b = $this->getReal(); + + if(($this->b == '/' && strpos('(,=:[!&|?', $this->a) !== false)) + $this->saveRegex(); + } + } + + /** + * Resets attributes that do not need to be stored between requests so that + * the next request is ready to go. Another reason for this is to make sure + * the variables are cleared and are not taking up memory. + */ + protected function clean() + { + unset($this->input); + $this->index = 0; + $this->a = $this->b = ''; + unset($this->c); + unset($this->options); + } + + /** + * Returns the next string for processing based off of the current index. + * + * @return string + */ + protected function getChar() + { + // Check to see if we had anything in the look ahead buffer and use that. + if (isset($this->c)) { + $char = $this->c; + unset($this->c); + + // Otherwise we start pulling from the input. + } else { + $char = substr($this->input, $this->index, 1); + + // If the next character doesn't exist return false. + if (isset($char) && $char === false) { + return false; + } + + // Otherwise increment the pointer and use this char. + $this->index++; + } + + // Normalize all whitespace except for the newline character into a + // standard space. + if($char !== "\n" && ord($char) < 32) + + return ' '; + + return $char; + } + + /** + * This function gets the next "real" character. It is essentially a wrapper + * around the getChar function that skips comments. This has significant + * performance benefits as the skipping is done using native functions (ie, + * c code) rather than in script php. + * + * + * @return string Next 'real' character to be processed. + * @throws \RuntimeException + */ + protected function getReal() + { + $startIndex = $this->index; + $char = $this->getChar(); + + // Check to see if we're potentially in a comment + if ($char !== '/') { + return $char; + } + + $this->c = $this->getChar(); + + if ($this->c === '/') { + return $this->processOneLineComments($startIndex); + + } elseif ($this->c === '*') { + return $this->processMultiLineComments($startIndex); + } + + return $char; + } + + /** + * Removed one line comments, with the exception of some very specific types of + * conditional comments. + * + * @param int $startIndex The index point where "getReal" function started + * @return string + */ + protected function processOneLineComments($startIndex) + { + $thirdCommentString = substr($this->input, $this->index, 1); + + // kill rest of line + $this->getNext("\n"); + + if ($thirdCommentString == '@') { + $endPoint = $this->index - $startIndex; + unset($this->c); + $char = "\n" . substr($this->input, $startIndex, $endPoint); + } else { + // first one is contents of $this->c + $this->getChar(); + $char = $this->getChar(); + } + + return $char; + } + + /** + * Skips multiline comments where appropriate, and includes them where needed. + * Conditional comments and "license" style blocks are preserved. + * + * @param int $startIndex The index point where "getReal" function started + * @return bool|string False if there's no character + * @throws \RuntimeException Unclosed comments will throw an error + */ + protected function processMultiLineComments($startIndex) + { + $this->getChar(); // current C + $thirdCommentString = $this->getChar(); + + // kill everything up to the next */ if it's there + if ($this->getNext('*/')) { + + $this->getChar(); // get * + $this->getChar(); // get / + $char = $this->getChar(); // get next real character + + // Now we reinsert conditional comments and YUI-style licensing comments + if (($this->options['flaggedComments'] && $thirdCommentString === '!') + || ($thirdCommentString === '@') ) { + + // If conditional comments or flagged comments are not the first thing in the script + // we need to echo a and fill it with a space before moving on. + if ($startIndex > 0) { + echo $this->a; + $this->a = " "; + + // If the comment started on a new line we let it stay on the new line + if ($this->input[($startIndex - 1)] === "\n") { + echo "\n"; + } + } + + $endPoint = ($this->index - 1) - $startIndex; + echo substr($this->input, $startIndex, $endPoint); + + return $char; + } + + } else { + $char = false; + } + + if($char === false) + throw new \RuntimeException('Unclosed multiline comment at position: ' . ($this->index - 2)); + + // if we're here c is part of the comment and therefore tossed + if(isset($this->c)) + unset($this->c); + + return $char; + } + + /** + * Pushes the index ahead to the next instance of the supplied string. If it + * is found the first character of the string is returned and the index is set + * to it's position. + * + * @param string $string + * @return string|false Returns the first character of the string or false. + */ + protected function getNext($string) + { + // Find the next occurrence of "string" after the current position. + $pos = strpos($this->input, $string, $this->index); + + // If it's not there return false. + if($pos === false) + + return false; + + // Adjust position of index to jump ahead to the asked for string + $this->index = $pos; + + // Return the first character of that string. + return substr($this->input, $this->index, 1); + } + + /** + * When a javascript string is detected this function crawls for the end of + * it and saves the whole string. + * + * @throws \RuntimeException Unclosed strings will throw an error + */ + protected function saveString() + { + $startpos = $this->index; + + // saveString is always called after a gets cleared, so we push b into + // that spot. + $this->a = $this->b; + + // If this isn't a string we don't need to do anything. + if ($this->a !== "'" && $this->a !== '"') { + return; + } + + // String type is the quote used, " or ' + $stringType = $this->a; + + // Echo out that starting quote + echo $this->a; + + // Loop until the string is done + while (true) { + + // Grab the very next character and load it into a + $this->a = $this->getChar(); + + switch ($this->a) { + + // If the string opener (single or double quote) is used + // output it and break out of the while loop- + // The string is finished! + case $stringType: + break 2; + + // New lines in strings without line delimiters are bad- actual + // new lines will be represented by the string \n and not the actual + // character, so those will be treated just fine using the switch + // block below. + case "\n": + throw new \RuntimeException('Unclosed string at position: ' . $startpos ); + break; + + // Escaped characters get picked up here. If it's an escaped new line it's not really needed + case '\\': + + // a is a slash. We want to keep it, and the next character, + // unless it's a new line. New lines as actual strings will be + // preserved, but escaped new lines should be reduced. + $this->b = $this->getChar(); + + // If b is a new line we discard a and b and restart the loop. + if ($this->b === "\n") { + break; + } + + // echo out the escaped character and restart the loop. + echo $this->a . $this->b; + break; + + + // Since we're not dealing with any special cases we simply + // output the character and continue our loop. + default: + echo $this->a; + } + } + } + + /** + * When a regular expression is detected this function crawls for the end of + * it and saves the whole regex. + * + * @throws \RuntimeException Unclosed regex will throw an error + */ + protected function saveRegex() + { + echo $this->a . $this->b; + + while (($this->a = $this->getChar()) !== false) { + if($this->a === '/') + break; + + if ($this->a === '\\') { + echo $this->a; + $this->a = $this->getChar(); + } + + if($this->a === "\n") + throw new \RuntimeException('Unclosed regex pattern at position: ' . $this->index); + + echo $this->a; + } + $this->b = $this->getReal(); + } + + /** + * Checks to see if a character is alphanumeric. + * + * @param string $char Just one character + * @return bool + */ + protected static function isAlphaNumeric($char) + { + return preg_match('/^[\w\$\pL]$/', $char) === 1 || $char == '/'; + } + + /** + * Replace patterns in the given string and store the replacement + * + * @param string $js The string to lock + * @return bool + */ + protected function lock($js) + { + /* lock things like "asd" + ++x; */ + $lock = '"LOCK---' . crc32(time()) . '"'; + + $matches = array(); + preg_match('/([+-])(\s+)([+-])/S', $js, $matches); + if (empty($matches)) { + return $js; + } + + $this->locks[$lock] = $matches[2]; + + $js = preg_replace('/([+-])\s+([+-])/S', "$1{$lock}$2", $js); + /* -- */ + + return $js; + } + + /** + * Replace "locks" with the original characters + * + * @param string $js The string to unlock + * @return bool + */ + protected function unlock($js) + { + if (empty($this->locks)) { + return $js; + } + + foreach ($this->locks as $lock => $replacement) { + $js = str_replace($lock, $replacement, $js); + } + + return $js; + } + +} diff --git a/vendor/JShrink/README.md b/vendor/JShrink/README.md new file mode 100644 index 00000000..940af38c --- /dev/null +++ b/vendor/JShrink/README.md @@ -0,0 +1,61 @@ +# JShrink [![Build Status](https://travis-ci.org/tedious/JShrink.svg?branch=master)](https://travis-ci.org/tedivm/JShrink) + +[![License](http://img.shields.io/packagist/l/tedivm/JShrink.svg)](https://github.com/tedivm/JShrink/blob/master/LICENSE) +[![Latest Stable Version](http://img.shields.io/github/release/tedious/JShrink.svg)](https://packagist.org/packages/tedivm/JShrink) +[![Coverage Status](https://coveralls.io/repos/tedious/JShrink/badge.png?branch=master)](https://coveralls.io/r/tedivm/JShrink?branch=master) +[![Total Downloads](http://img.shields.io/packagist/dt/tedivm/jshrink.svg)](https://packagist.org/packages/tedivm/JShrink) + + +JShrink is a php class that minifies javascript so that it can be delivered to the client quicker. This code can be used +by any product looking to minify their javascript on the fly (although caching the results is suggested for performance +reasons). Unlike many other products this is not a port into php but a native application, resulting in better +performance. + + +## Usage + +Minifying your code is simple call to a static function- + +```php + false)); +``` + + +## Results + +* Raw - 586,990 +* Gzip - 151,301 +* JShrink - 371,982 +* JShrink and Gzip - 93,507 + + +## Installing + +### Composer + +Installing JShrink can be done through a variety of methods, although Composer is +recommended. + +```yaml +"require": { + "tedivm/jshrink": "~1.0" +} +``` + +### Github + +Releases of JShrink are available on [Github](https://github.com/tedious/JShrink/releases). + + +## License + +JShrink is licensed under the BSD License. See the LICENSE file for details. + +In the spirit of open source, use of this library for evil is discouraged but not prohibited.