New Minify Classes!

libraries/Gelato/Gelato.php

@@ -88,7 +88,9 @@ ClassLoader::mapClasses(array(
     'Html'         => __DIR__.'/Html/Html.php',
     'Image'        => __DIR__.'/Image/Image.php',
     'Inflector'    => __DIR__.'/Inflector/Inflector.php',
-    'Minify'       => __DIR__.'/Minify/Minify.php',
+    'MinifyCSS'       => __DIR__.'/Minify/MinifyCSS.php',
+    'MinifyHTML'       => __DIR__.'/Minify/MinifyHTML.php',
+    'MinifyJS'       => __DIR__.'/Minify/MinifyJS.php',
     'Notification' => __DIR__.'/Notification/Notification.php',
     'Number'       => __DIR__.'/Number/Number.php',
     'Registry'     => __DIR__.'/Registry/Registry.php',

libraries/Gelato/Minify/Minify.php

@@ -1,93 +0,0 @@
-<?php
-
-/**
- * Gelato Library
- *
- * This source file is part of the Gelato Library. More information,
- * documentation and tutorials can be found at http://gelato.monstra.org
- *
- * @package     Gelato
- *
- * @author      Romanenko Sergey / Awilum <awilum@msn.com>
- * @copyright   2012-2013 Romanenko Sergey / Awilum <awilum@msn.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-class Minify
-{
-    /**
-     * Protected constructor since this is a static class.
-     *
-     * @access  protected
-     */
-    protected function __construct()
-    {
-        // Nothing here
-    }
-
-    /**
-     * Minify html
-     *
-     *  <code>
-     *      echo Minify::html($buffer);
-     *  </code>
-     *
-     * @param  string $buffer html
-     * @return string
-     */
-    public static function html($buffer)
-    {
-        return preg_replace('/^\\s+|\\s+$/m', '', $buffer);
-    }
-
-    /**
-     * Minify css
-     *
-     *  <code>
-     *      echo Minify::css($buffer);
-     *  </code>
-     *
-     * @param  string $buffer css
-     * @return string
-     */
-    public static function css($buffer)
-    {
-        // Remove comments
-        $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
-
-        // Remove tabs, spaces, newlines, etc.
-        $buffer = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), '', $buffer);
-
-        // Preserve empty comment after '>' http://www.webdevout.net/css-hacks#in_css-selectors
-        $buffer = preg_replace('@>/\\*\\s*\\*/@', '>/*keep*/', $buffer);
-
-        // Preserve empty comment between property and value
-        // http://css-discuss.incutio.com/?page=BoxModelHack
-        $buffer = preg_replace('@/\\*\\s*\\*/\\s*:@', '/*keep*/:', $buffer);
-        $buffer = preg_replace('@:\\s*/\\*\\s*\\*/@', ':/*keep*/', $buffer);
-
-        // Remove ws around { } and last semicolon in declaration block
-        $buffer = preg_replace('/\\s*{\\s*/', '{', $buffer);
-        $buffer = preg_replace('/;?\\s*}\\s*/', '}', $buffer);
-
-        // Remove ws surrounding semicolons
-        $buffer = preg_replace('/\\s*;\\s*/', ';', $buffer);
-
-        // Remove ws around urls
-        $buffer = preg_replace('/url\\(\\s*([^\\)]+?)\\s*\\)/x', 'url($1)', $buffer);
-
-        // Remove ws between rules and colons
-        $buffer = preg_replace('/\\s*([{;])\\s*([\\*_]?[\\w\\-]+)\\s*:\\s*(\\b|[#\'"])/x', '$1$2:$3', $buffer);
-
-        // Minimize hex colors
-        $buffer = preg_replace('/([^=])#([a-f\\d])\\2([a-f\\d])\\3([a-f\\d])\\4([\\s;\\}])/i', '$1#$2$3$4$5', $buffer);
-
-        // Replace any ws involving newlines with a single newline
-        $buffer = preg_replace('/[ \\t]*\\n+\\s*/', "\n", $buffer);
-
-        return $buffer;
-    }
-
-}

libraries/Gelato/Minify/MinifyCSS.php

@@ -0,0 +1,255 @@
+<?php
+
+/**
+ * Gelato Library
+ *
+ * This source file is part of the Gelato Library. More information,
+ * documentation and tutorials can be found at http://gelato.monstra.org
+ *
+ * @package     Gelato
+ *
+ * @author      Romanenko Sergey / Awilum <awilum@msn.com>
+ * @author      Stephen Clay <steve@mrclay.org>
+ * @copyright   2012-2013 Romanenko Sergey / Awilum <awilum@msn.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class MinifyCSS
+{
+
+    /**
+     * @var array
+     */
+    protected $_options = null;
+
+    /**
+     * Are we "in" a hack? I.e. are some browsers targetted until the next comment?
+     *
+     * @var bool
+     */
+    protected $_inHack = false;
+
+    /**
+     * Constructor
+     *
+     * @param array $options (currently ignored)
+     */
+    private function __construct($options)
+    {
+        $this->_options = $options;
+    }
+
+    /**
+     * Minify a CSS string
+     *
+     * @param string $css
+     *
+     * @param array $options (currently ignored)
+     *
+     * @return string
+     */
+    public static function process($css, $options = array())
+    {
+        $obj = new MinifyCSS($options);
+
+        return $obj->_process($css);
+    }
+
+    /**
+     * Minify a CSS string
+     *
+     * @param string $css
+     *
+     * @return string
+     */
+    protected function _process($css)
+    {
+        $css = str_replace("\r\n", "\n", $css);
+
+        // preserve empty comment after '>'
+        // http://www.webdevout.net/css-hacks#in_css-selectors
+        $css = preg_replace('@>/\\*\\s*\\*/@', '>/*keep*/', $css);
+
+        // preserve empty comment between property and value
+        // http://css-discuss.incutio.com/?page=BoxModelHack
+        $css = preg_replace('@/\\*\\s*\\*/\\s*:@', '/*keep*/:', $css);
+        $css = preg_replace('@:\\s*/\\*\\s*\\*/@', ':/*keep*/', $css);
+
+        // apply callback to all valid comments (and strip out surrounding ws
+        $css = preg_replace_callback('@\\s*/\\*([\\s\\S]*?)\\*/\\s*@'
+            ,array($this, '_commentCB'), $css);
+
+        // remove ws around { } and last semicolon in declaration block
+        $css = preg_replace('/\\s*{\\s*/', '{', $css);
+        $css = preg_replace('/;?\\s*}\\s*/', '}', $css);
+
+        // remove ws surrounding semicolons
+        $css = preg_replace('/\\s*;\\s*/', ';', $css);
+
+        // remove ws around urls
+        $css = preg_replace('/
+                url\\(      # url(
+                \\s*
+                ([^\\)]+?)  # 1 = the URL (really just a bunch of non right parenthesis)
+                \\s*
+                \\)         # )
+            /x', 'url($1)', $css);
+
+        // remove ws between rules and colons
+        $css = preg_replace('/
+                \\s*
+                ([{;])              # 1 = beginning of block or rule separator
+                \\s*
+                ([\\*_]?[\\w\\-]+)  # 2 = property (and maybe IE filter)
+                \\s*
+                :
+                \\s*
+                (\\b|[#\'"-])        # 3 = first character of a value
+            /x', '$1$2:$3', $css);
+
+        // remove ws in selectors
+        $css = preg_replace_callback('/
+                (?:              # non-capture
+                    \\s*
+                    [^~>+,\\s]+  # selector part
+                    \\s*
+                    [,>+~]       # combinators
+                )+
+                \\s*
+                [^~>+,\\s]+      # selector part
+                {                # open declaration block
+            /x'
+            ,array($this, '_selectorsCB'), $css);
+
+        // minimize hex colors
+        $css = preg_replace('/([^=])#([a-f\\d])\\2([a-f\\d])\\3([a-f\\d])\\4([\\s;\\}])/i'
+            , '$1#$2$3$4$5', $css);
+
+        // remove spaces between font families
+        $css = preg_replace_callback('/font-family:([^;}]+)([;}])/'
+            ,array($this, '_fontFamilyCB'), $css);
+
+        $css = preg_replace('/@import\\s+url/', '@import url', $css);
+
+        // replace any ws involving newlines with a single newline
+        $css = preg_replace('/[ \\t]*\\n+\\s*/', "\n", $css);
+
+        // separate common descendent selectors w/ newlines (to limit line lengths)
+        $css = preg_replace('/([\\w#\\.\\*]+)\\s+([\\w#\\.\\*]+){/', "$1\n$2{", $css);
+
+        // Use newline after 1st numeric value (to limit line lengths).
+        $css = preg_replace('/
+            ((?:padding|margin|border|outline):\\d+(?:px|em)?) # 1 = prop : 1st numeric value
+            \\s+
+            /x'
+            ,"$1\n", $css);
+
+        // prevent triggering IE6 bug: http://www.crankygeek.com/ie6pebug/
+        $css = preg_replace('/:first-l(etter|ine)\\{/', ':first-l$1 {', $css);
+
+        return trim($css);
+    }
+
+    /**
+     * Replace what looks like a set of selectors
+     *
+     * @param array $m regex matches
+     *
+     * @return string
+     */
+    protected function _selectorsCB($m)
+    {
+        // remove ws around the combinators
+        return preg_replace('/\\s*([,>+~])\\s*/', '$1', $m[0]);
+    }
+
+    /**
+     * Process a comment and return a replacement
+     *
+     * @param array $m regex matches
+     *
+     * @return string
+     */
+    protected function _commentCB($m)
+    {
+        $hasSurroundingWs = (trim($m[0]) !== $m[1]);
+        $m = $m[1];
+        // $m is the comment content w/o the surrounding tokens,
+        // but the return value will replace the entire comment.
+        if ($m === 'keep') {
+            return '/**/';
+        }
+        if ($m === '" "') {
+            // component of http://tantek.com/CSS/Examples/midpass.html
+            return '/*" "*/';
+        }
+        if (preg_match('@";\\}\\s*\\}/\\*\\s+@', $m)) {
+            // component of http://tantek.com/CSS/Examples/midpass.html
+            return '/*";}}/* */';
+        }
+        if ($this->_inHack) {
+            // inversion: feeding only to one browser
+            if (preg_match('@
+                    ^/               # comment started like /*/
+                    \\s*
+                    (\\S[\\s\\S]+?)  # has at least some non-ws content
+                    \\s*
+                    /\\*             # ends like /*/ or /**/
+                @x', $m, $n)) {
+                // end hack mode after this comment, but preserve the hack and comment content
+                $this->_inHack = false;
+
+                return "/*/{$n[1]}/**/";
+            }
+        }
+        if (substr($m, -1) === '\\') { // comment ends like \*/
+            // begin hack mode and preserve hack
+            $this->_inHack = true;
+
+            return '/*\\*/';
+        }
+        if ($m !== '' && $m[0] === '/') { // comment looks like /*/ foo */
+            // begin hack mode and preserve hack
+            $this->_inHack = true;
+
+            return '/*/*/';
+        }
+        if ($this->_inHack) {
+            // a regular comment ends hack mode but should be preserved
+            $this->_inHack = false;
+
+            return '/**/';
+        }
+        // Issue 107: if there's any surrounding whitespace, it may be important, so
+        // replace the comment with a single space
+        return $hasSurroundingWs // remove all other comments
+            ? ' '
+            : '';
+    }
+
+    /**
+     * Process a font-family listing and return a replacement
+     *
+     * @param array $m regex matches
+     *
+     * @return string
+     */
+    protected function _fontFamilyCB($m)
+    {
+        // Issue 210: must not eliminate WS between words in unquoted families
+        $pieces = preg_split('/(\'[^\']+\'|"[^"]+")/', $m[1], null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
+        $out = 'font-family:';
+        while (null !== ($piece = array_shift($pieces))) {
+            if ($piece[0] !== '"' && $piece[0] !== "'") {
+                $piece = preg_replace('/\\s+/', ' ', $piece);
+                $piece = preg_replace('/\\s?,\\s?/', ',', $piece);
+            }
+            $out .= $piece;
+        }
+
+        return $out . $m[2];
+    }
+
+}

libraries/Gelato/Minify/MinifyHTML.php

@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * Gelato Library
+ *
+ * This source file is part of the Gelato Library. More information,
+ * documentation and tutorials can be found at http://gelato.monstra.org
+ *
+ * @package     Gelato
+ *
+ * @author      Romanenko Sergey / Awilum <awilum@msn.com>
+ * @copyright   2012-2013 Romanenko Sergey / Awilum <awilum@msn.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class MinifyHTML
+{
+    /**
+     * Minify html
+     *
+     *  <code>
+     *      echo MinifyHTML::process($html);
+     *  </code>
+     *
+     * @param  string $buffer html
+     * @return string
+     */
+    public static function process($html)
+    {
+        // Remove HTML comments (not containing IE conditional comments).
+        $html = preg_replace_callback('/<!--([\\s\\S]*?)-->/', 'self::_comments', $html);
+
+        // Trim each line.
+        $html = preg_replace('/^\\s+|\\s+$/m', '', $html);
+
+        // Return HTML
+        return $html;
+    }
+
+    protected static function _comments($m)
+    {
+        return (0 === strpos($m[1], '[') || false !== strpos($m[1], '<![')) ? $m[0] : '';
+    }
+
+}

libraries/Gelato/Minify/MinifyJS.php

@@ -0,0 +1,50 @@
+<?php
+
+/**
+ * Gelato Library
+ *
+ * This source file is part of the Gelato Library. More information,
+ * documentation and tutorials can be found at http://gelato.monstra.org
+ *
+ * @package     Gelato
+ *
+ * @author      Romanenko Sergey / Awilum <awilum@msn.com>
+ * @copyright   2012-2013 Romanenko Sergey / Awilum <awilum@msn.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class MinifyJS
+{
+    /**
+     * Minify js
+     *
+     *  <code>
+     *      echo MinifyJS::process($js);
+     *  </code>
+     *
+     * @param  string $buffer html
+     * @return string
+     */
+    public static function process($js)
+    {
+        // newlines > linefeed
+        $js = str_replace(array("\r\n", "\r", "\n"), "\n", $js);
+
+        // empty lines > collapse
+        $js = preg_replace('/^[ \t]*|[ \t]*$/m', '', $js);
+        $js = preg_replace('/\n+/m', "\n", $js);
+        $js = trim($js);
+
+        // redundant whitespace > remove
+        $js = preg_replace('/(?<=[{}\[\]\(\)=><&\|;:,\?!\+-])[ \t]*|[ \t]*(?=[{}\[\]\(\)=><&\|;:,\?!\+-])/i', '', $js);
+        $js = preg_replace('/[ \t]+/', ' ', $js);
+
+        // redundant semicolons (followed by another semicolon or closing curly bracket) > remove
+        $js = preg_replace('/;\s*(?=[;}])/s', '', $js);
+
+        // Return JS
+        return $js;
+    }
+}