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  2. +674 −0 LICENSE
  3. +48 −0 smartoptimizer/config.php
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+ RewriteEngine On
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+ RewriteCond %{REQUEST_FILENAME} !-d
+ RewriteRule ^(.*\.(js|css))$ smartoptimizer/?$1
+ <IfModule mod_expires.c>
+ RewriteCond %{REQUEST_FILENAME} -f
+ RewriteRule ^(.*\.(js|css|html?|xml|txt))$ smartoptimizer/?$1
+ </IfModule>
+ <IfModule !mod_expires.c>
+ RewriteCond %{REQUEST_FILENAME} -f
+ RewriteRule ^(.*\.(gif|jpg|jpeg|png|swf|css|js|html?|xml|txt))$ smartoptimizer/?$1
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+FileETag none
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+ Version 3, 29 June 2007
+ Copyright (C) 2007 Free Software Foundation, Inc. <>
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+ Preamble
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+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <>.
+Also add information on how to contact you by electronic and paper mail.
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
48 smartoptimizer/config.php
@@ -0,0 +1,48 @@
+ * SmartOptimizer Configuration File
+ */
+//base dir
+$settings['baseDir'] = '../';
+//Encoding of your js and css files. (utf-8 or iso-8859-1)
+$settings['charSet'] = 'utf-8';
+//Show error messages if any error occurs (true or false)
+$settings['debug'] = true;
+//use it to set gzip compression On or Off
+$settings['gzip'] = true;
+//these types of files will not be gzipped nor minified
+$settings['gzipExceptions'] = array('gif','jpeg','jpg','png','swf');
+//use it to set Minifier On or Off
+$settings['minify'] = true;
+//use it to set file concatenation On or Off
+$settings['concatenate'] = true;
+//separator for files to be concatenated
+$settings['separator'] = ',';
+//to set server-side cache On or Off
+$settings['serverCache'] = true;
+//if you change it to false, the files will not be checked for modifications and always cached files will be used (for better performance)
+$settings['serverCacheCheck'] = true;
+//cache dir
+$settings['cacheDir'] = 'cache/';
+//prefix for cache files
+$settings['cachePrefix'] = 'so_';
+//to set client-side cache On or Off
+$settings['clientCache'] = true;
+//Setting this to false will force the browser to use cached files without checking for changes.
+$settings['clientCacheCheck'] = false;
192 smartoptimizer/index.php
@@ -0,0 +1,192 @@
+/* SmartOptimizer v1.5 beta
+ * SmartOptimizer enhances your website performance using techniques such as Compression, Concatenation, minifying snd Caching.
+ *
+ * Copyright (c) 2006-2008 Ali Farhadi (
+ * Released under the terms of the GNU Public License.
+ * See the GPL for details (
+ *
+ * Author: Ali Farhadi (
+ * Website:
+ */
+$settings = array(
+ 'baseDir' => '../',
+ 'charSet' => 'utf-8',
+ 'debug' => true,
+ 'gzip' => true,
+ 'gzipExceptions' => array('gif','jpeg','jpg','png','swf'),
+ 'minify' => true,
+ 'concatenate' => true,
+ 'separator' => ',',
+ 'serverCache' => true,
+ 'serverCacheCheck' => false,
+ 'cacheDir' => 'cache/',
+ 'cachePrefix' => 'so_',
+ 'clientCache' => true,
+ 'clientCacheCheck' => false,
+$mimeTypes = array(
+ "js" => "application/x-javascript",
+ "css" => "text/css",
+ "htm" => "text/html",
+ "html" => "text/html",
+ "xml" => "text/xml",
+ "txt" => "text/plain",
+ "jpg" => "image/jpeg",
+ "jpeg" => "image/jpeg",
+ "png" => "image/png",
+ "gif" => "image/gif",
+ "swf" => "application/x-shockwave-flash",
+function headerExit($status) {
+ header("HTTP/1.0 $status");
+ exit();
+function headerNoCache() {
+ // already expired
+ header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+ // always modified
+ header("Last-Modified: " . gmdatestr());
+ // HTTP/1.1
+ header("Cache-Control: no-store, no-cache, must-revalidate");
+ header("Cache-Control: post-check=0, pre-check=0", false);
+ header("Cache-Control: max-age=0", false);
+ // HTTP/1.0
+ header("Pragma: no-cache");
+ //generate a unique Etag each time
+ header('Etag: '.microtime());
+function headerNeverExpire(){
+ header("Expires: " . gmdatestr(time() + 315360000));
+ header("Cache-Control: max-age=315360000");
+function debugExit($msg){
+ global $settings;
+ if (!$settings['debug']) {
+ headerExit('404 Not Found');
+ }
+ headerNoCache();
+ header('Content-Type: text/html; charset='.$settings['charSet']);
+ header("Content-Encoding: none");
+ echo "//<script>\n";
+ echo "alert('SmartOptimizer Error: ".str_replace("\n", "\\n", addslashes($msg))."');\n";
+ echo "//</script>\n";
+ exit();
+function gmdatestr($time = null) {
+ if (is_null($time)) $time = time();
+ return gmdate("D, d M Y H:i:s", $time) . " GMT";
+function filesmtime() {
+ global $files, $fileType;
+ static $filesmtime;
+ if ($filesmtime) return $filesmtime;
+ $filesmtime = max(@filemtime("minifiers/$fileType.php"), filemtime('index.php'), filemtime('config.php'));
+ foreach ($files as $file) {
+ if (!file_exists($file)) debugExit("File not found ($file).");
+ $filesmtime = max(filemtime($file), $filesmtime);
+ }
+ return $filesmtime;
+list($query) = explode('?', urldecode($_SERVER['QUERY_STRING']));
+if (preg_match('/^\/?(.+\/)?(.+)$/', $query, $matchResult)) {
+ $fileNames = $matchResult[2];
+ $fileDir = $settings['baseDir'].$matchResult[1];
+} else debugExit("Invalid file name ($query)");
+if (strpos(realpath($fileDir), realpath($settings['baseDir'])) !== 0) debugExit("File is out of base directory.");
+if ($settings['concatenate']) {
+ $files = explode($settings['separator'], $fileNames);
+ $settings['concatenate'] = count($files) > 1;
+} else $files = array($fileNames);
+foreach ($files as $key => $file) {
+ if (preg_match('/\.([a-z0-9]+)$/', $file, $matchResult)) {
+ $fileTypes[] = $matchResult[1];
+ } else debugExit("Unsupported file ($file)");
+ $files[$key] = $fileDir.$file;
+if ($settings['concatenate']) {
+ if (count(array_unique($fileTypes)) > 1) debugExit("Files must be of the same type.");
+$fileType = $fileTypes[0];
+if (!isset($mimeTypes[$fileType])) debugExit("Unsupported file type ($fileType)");
+header("Content-Type: {$mimeTypes[$fileType]}; charset=".$settings['charSet']);
+$settings['gzip'] =
+ ($settings['gzip'] &&
+ !in_array($fileType, $settings['gzipExceptions']) &&
+ in_array('gzip', array_map('trim', explode(',' , @$_SERVER['HTTP_ACCEPT_ENCODING']))) &&
+ function_exists('gzencode'));
+if ($settings['gzip']) header("Content-Encoding: gzip");
+$settings['minify'] = $settings['minify'] && file_exists('minifiers/'.$fileType.'.php');
+$settings['serverCache'] = $settings['serverCache'] && ($settings['minify'] || $settings['gzip'] || $settings['concatenate']);
+if ($settings['serverCache']) {
+ $cachedFile = $settings['cacheDir'].$settings['cachePrefix'].md5($query).'.'.$fileType.($settings['gzip'] ? '.gz' : '');
+$generateContent = ((!$settings['serverCache'] && (!$settings['clientCache'] || !$settings['clientCacheCheck'] || !isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) || $_SERVER['HTTP_IF_MODIFIED_SINCE'] != gmdatestr(filesmtime()))) ||
+ ($settings['serverCache'] && (!file_exists($cachedFile) || ($settings['serverCacheCheck'] && filesmtime() > filemtime($cachedFile)))));
+if ($settings['clientCache'] && $settings['clientCacheCheck']) {
+ if ($settings['serverCache'] && !$generateContent) $mtime = filemtime($cachedFile);
+ elseif ($settings['serverCache']) $mtime = time();
+ else $mtime = filesmtime();
+ $mtimestr = gmdatestr($mtime);
+if (!$settings['clientCache'] || !$settings['clientCacheCheck'] || !isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) || $_SERVER['HTTP_IF_MODIFIED_SINCE'] != $mtimestr) {
+ if ($settings['clientCache'] && $settings['clientCacheCheck']) {
+ header("Last-Modified: " . $mtimestr);
+ header("Cache-Control: must-revalidate");
+ } elseif ($settings['clientCache']) {
+ headerNeverExpire();
+ } else headerNoCache();
+ if ($generateContent) {
+ if ($settings['minify']) include('minifiers/'.$fileType.'.php');
+ $content = array();
+ foreach ($files as $file) (($content[] = @file_get_contents($file)) !== false) || debugExit("File not found ($file).");
+ $content = implode("\n", $content);
+ if ($settings['minify']) $content = call_user_func('minify_' . $fileType, $content);
+ if ($settings['gzip']) $content = gzencode($content, 9);
+ if ($settings['serverCache']) {
+ $handle = @fopen($cachedFile, 'w') or debugExit("Could not create cache file($cachedFile).");
+ fwrite($handle, $content);
+ fclose($handle);
+ }
+ header('Content-Length: ' . strlen($content));
+ echo $content;
+ } else {
+ header('Content-Length: ' . filesize($cachedFile));
+ readfile($cachedFile);
+ }
+} else headerExit('304 Not Modified');
76 smartoptimizer/minifiers/css.php
@@ -0,0 +1,76 @@
+ * SmartOptimizer CSS Minifier
+ */
+function minify_css($str) {
+ global $settings;
+ $urlPrefix = '';
+ if (strpos($_SERVER['REQUEST_URI'], $_SERVER['SCRIPT_NAME'].'?') === 0 ||
+ strpos($_SERVER['REQUEST_URI'], dirname($_SERVER['SCRIPT_NAME']).'/?') === 0 ) {
+ $urlPrefix = '../'.dirname($_SERVER['QUERY_STRING']).'/';
+ }
+ $res = '';
+ $i=0;
+ $inside_block = false;
+ $current_char = '';
+ while ($i+1<strlen($str)) {
+ if ($str[$i]=='"' || $str[$i]=="'") {//quoted string detected
+ $res .= $quote = $str[$i++];
+ if (strtolower(substr($res, -5, 4))=='url(') {
+ if (!preg_match('@://@', substr($str, $i, strpos($str, ')', $i) - $i))) $res .= $urlPrefix;
+ }
+ while ($i<strlen($str) && $str[$i]!=$quote) {
+ if ($str[$i] == '\\') {
+ $res .= $str[$i++];
+ }
+ $res .= $str[$i++];
+ }
+ $res .= $str[$i++];
+ continue;
+ } elseif (strtolower(substr($res, -4))=='url(') {//uri detected
+ if ($str[$i] == '\'' || $str[$i] == '"') $res .= $str[$i++];
+ if (!preg_match('@://@', substr($str, $i, strpos($str, ')', $i) - $i))) $res .= $urlPrefix;
+ do {
+ if ($str[$i] == '\\') {
+ $res .= $str[$i++];
+ }
+ $res .= $str[$i++];
+ } while ($i<strlen($str) && $str[$i]!=')');
+ $res .= $str[$i++];
+ continue;
+ } elseif ($str[$i].$str[$i+1]=='/*') {//css comment detected
+ $i+=3;
+ while ($i<strlen($str) && $str[$i-1].$str[$i]!='*/') $i++;
+ if ($current_char == "\n") $str[$i] = "\n";
+ else $str[$i] = ' ';
+ }
+ if (strlen($str) <= $i+1) break;
+ $current_char = $str[$i];
+ if ($inside_block && $current_char == '}') {
+ $inside_block = false;
+ }
+ if ($current_char == '{') {
+ $inside_block = true;
+ }
+ if (preg_match('/[\n\r\t ]/', $current_char)) $current_char = " ";
+ if ($current_char == " ") {
+ $pattern = $inside_block?'/^[^{};,:\n\r\t ]{2}$/':'/^[^{};,>+\n\r\t ]{2}$/';
+ if (strlen($res) && preg_match($pattern, $res[strlen($res)-1].$str[$i+1]))
+ $res .= $current_char;
+ } else $res .= $current_char;
+ $i++;
+ }
+ if ($i<strlen($str) && preg_match('/[^\n\r\t ]/', $str[$i])) $res .= $str[$i];
+ return $res;
97 smartoptimizer/minifiers/js.php
@@ -0,0 +1,97 @@
+ * SmartOptimizer JavaScript Minifier
+ */
+function minify_js($str) {
+ $res = '';
+ $maybe_regex = true;
+ $i=0;
+ $current_char = '';
+ while ($i+1<strlen($str)) {
+ if ($maybe_regex && $str[$i]=='/' && $str[$i+1]!='/' && $str[$i+1]!='*') {//regex detected
+ if (strlen($res) && $res[strlen($res)-1] === '/') $res .= ' ';
+ do {
+ if ($str[$i] == '\\') {
+ $res .= $str[$i++];
+ } elseif ($str[$i] == '[') {
+ do {
+ if ($str[$i] == '\\') {
+ $res .= $str[$i++];
+ }
+ $res .= $str[$i++];
+ } while ($i<strlen($str) && $str[$i]!=']');
+ }
+ $res .= $str[$i++];
+ } while ($i<strlen($str) && $str[$i]!='/');
+ $res .= $str[$i++];
+ $maybe_regex = false;
+ continue;
+ } elseif ($str[$i]=='"' || $str[$i]=="'") {//quoted string detected
+ $quote = $str[$i];
+ do {
+ if ($str[$i] == '\\') {
+ $res .= $str[$i++];
+ }
+ $res .= $str[$i++];
+ } while ($i<strlen($str) && $str[$i]!=$quote);
+ $res .= $str[$i++];
+ continue;
+ } elseif ($str[$i].$str[$i+1]=='/*') {//multi-line comment detected
+ $i+=3;
+ while ($i<strlen($str) && $str[$i-1].$str[$i]!='*/') $i++;
+ if ($current_char == "\n") $str[$i] = "\n";
+ else $str[$i] = ' ';
+ } elseif ($str[$i].$str[$i+1]=='//') {//single-line comment detected
+ $i+=2;
+ while ($i<strlen($str) && $str[$i]!="\n") $i++;
+ }
+ $LF_needed = false;
+ if (preg_match('/[\n\r\t ]/', $str[$i])) {
+ if (strlen($res) && preg_match('/[\n ]/', $res[strlen($res)-1])) {
+ if ($res[strlen($res)-1] == "\n") $LF_needed = true;
+ $res = substr($res, 0, -1);
+ }
+ while ($i+1<strlen($str) && preg_match('/[\n\r\t ]/', $str[$i+1])) {
+ if (!$LF_needed && preg_match('/[\n\r]/', $str[$i])) $LF_needed = true;
+ $i++;
+ }
+ }
+ if (strlen($str) <= $i+1) break;
+ $current_char = $str[$i];
+ if ($LF_needed) $current_char = "\n";
+ elseif ($current_char == "\t") $current_char = " ";
+ elseif ($current_char == "\r") $current_char = "\n";
+ // detect unnecessary white spaces
+ if ($current_char == " ") {
+ if (strlen($res) &&
+ (
+ preg_match('/^[^(){}[\]=+\-*\/%&|!><?:~^,;"\']{2}$/', $res[strlen($res)-1].$str[$i+1]) ||
+ preg_match('/^(\+\+)|(--)$/', $res[strlen($res)-1].$str[$i+1]) // for example i+ ++j;
+ )) $res .= $current_char;
+ } elseif ($current_char == "\n") {
+ if (strlen($res) &&
+ (
+ preg_match('/^[^({[=+\-*%&|!><?:~^,;\/][^)}\]=+\-*%&|><?:,;\/]$/', $res[strlen($res)-1].$str[$i+1]) ||
+ (strlen($res)>1 && preg_match('/^(\+\+)|(--)$/', $res[strlen($res)-2].$res[strlen($res)-1])) ||
+ preg_match('/^(\+\+)|(--)$/', $current_char.$str[$i+1]) ||
+ preg_match('/^(\+\+)|(--)$/', $res[strlen($res)-1].$str[$i+1])// || // for example i+ ++j;
+ )) $res .= $current_char;
+ } else $res .= $current_char;
+ // if the next charachter be a slash, detects if it is a divide operator or start of a regex
+ if (preg_match('/[({[=+\-*\/%&|!><?:~^,;]/', $current_char)) $maybe_regex = true;
+ elseif (!preg_match('/[\n ]/', $current_char)) $maybe_regex = false;
+ $i++;
+ }
+ if ($i<strlen($str) && preg_match('/[^\n\r\t ]/', $str[$i])) $res .= $str[$i];
+ return $res;

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