/** * Add line numbers in C-style comments * * This uses a very basic parser easily fooled by comment tokens inside * strings or regexes, but, otherwise, generally clean code will not be * mangled. URI rewriting can also be performed. * * @param string $content * * @param array $options available options: * * 'id': (optional) string to identify file. E.g. file name/path * * 'currentDir': (default null) if given, this is assumed to be the * directory of the current CSS file. Using this, minify will rewrite * all relative URIs in import/url declarations to correctly point to * the desired files, and prepend a comment with debugging information about * this process. * * @return string */ public static function minify($content, $options = array()) { $id = isset($options['id']) && $options['id'] ? $options['id'] : ''; $content = str_replace("\r\n", "\n", $content); $lines = explode("\n", $content); $numLines = count($lines); // determine left padding $padTo = strlen($numLines); $inComment = false; $i = 0; $newLines = array(); while (null !== ($line = array_shift($lines))) { if ('' !== $id && 0 == $i % 50) { array_push($newLines, '', "/* {$id} */", ''); } ++$i; $newLines[] = self::_addNote($line, $i, $inComment, $padTo); $inComment = self::_eolInComment($line, $inComment); } $content = implode("\n", $newLines) . "\n"; // check for desired URI rewriting if (isset($options['currentDir'])) { #require_once 'Diglin/Minify/CSS/UriRewriter.php'; Diglin_Minify_CSS_UriRewriter::$debugText = ''; $content = Diglin_Minify_CSS_UriRewriter::rewrite($content, $options['currentDir'], isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'], isset($options['symlinks']) ? $options['symlinks'] : array()); $content = "/* Minify_CSS_UriRewriter::\$debugText\n\n" . Diglin_Minify_CSS_UriRewriter::$debugText . "*/\n" . $content; } return $content; }
/** * Prepend a path to relative URIs in CSS files * * @param string $css * * @param string $path The path to prepend. * * @return string */ public static function prepend($css, $path) { self::$_prependPath = $path; $css = self::_trimUrls($css); // append $css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/', array(self::$className, '_processUriCB'), $css); $css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/', array(self::$className, '_processUriCB'), $css); self::$_prependPath = null; return $css; }
/** * Minify a CSS string * * @param string $css * * @param array $options available options: * * 'preserveComments': (default true) multi-line comments that begin * with "/*!" will be preserved with newlines before and after to * enhance readability. * * 'prependRelativePath': (default null) if given, this string will be * prepended to all relative URIs in import/url declarations * * 'currentDir': (default null) if given, this is assumed to be the * directory of the current CSS file. Using this, minify will rewrite * all relative URIs in import/url declarations to correctly point to * the desired files. For this to work, the files *must* exist and be * visible by the PHP process. * * 'symlinks': (default = array()) If the CSS file is stored in * a symlink-ed directory, provide an array of link paths to * target paths, where the link paths are within the document root. Because * paths need to be normalized for this to work, use "//" to substitute * the doc root in the link paths (the array keys). E.g.: * <code> * array('//symlink' => '/real/target/path') // unix * array('//static' => 'D:\\staticStorage') // Windows * </code> * * @return string */ public static function minify($css, $options = array()) { #require_once 'Diglin/Minify/CSS/Compressor.php'; if (isset($options['preserveComments']) && !$options['preserveComments']) { $css = Diglin_Minify_CSS_Compressor::process($css, $options); } else { #require_once 'Diglin/Minify/CommentPreserver.php'; $css = Diglin_Minify_CommentPreserver::process($css, array('Diglin_Minify_CSS_Compressor', 'process'), array($options)); } if (!isset($options['currentDir']) && !isset($options['prependRelativePath'])) { return $css; } #require_once 'Diglin/Minify/CSS/UriRewriter.php'; if (isset($options['currentDir'])) { return Diglin_Minify_CSS_UriRewriter::rewrite($css, $options['currentDir'], isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'], isset($options['symlinks']) ? $options['symlinks'] : array()); } else { return Diglin_Minify_CSS_UriRewriter::prepend($css, $options['prependRelativePath']); } }