From d42607998482e36865c1d8a443f92a457f6b2f3b Mon Sep 17 00:00:00 2001 From: Silvio Rhatto Date: Sat, 15 Mar 2014 15:11:12 -0300 Subject: Squashed 'mod/minify/' content from commit 5949018 git-subtree-dir: mod/minify git-subtree-split: 594901859d5afc1fa364322428bd7a6d5c6a3f96 --- vendors/min/lib/Minify/CSS/Compressor.php | 250 ++++++++++++++++++++++++++ vendors/min/lib/Minify/CSS/UriRewriter.php | 270 +++++++++++++++++++++++++++++ 2 files changed, 520 insertions(+) create mode 100644 vendors/min/lib/Minify/CSS/Compressor.php create mode 100644 vendors/min/lib/Minify/CSS/UriRewriter.php (limited to 'vendors/min/lib/Minify/CSS') diff --git a/vendors/min/lib/Minify/CSS/Compressor.php b/vendors/min/lib/Minify/CSS/Compressor.php new file mode 100644 index 000000000..a34828681 --- /dev/null +++ b/vendors/min/lib/Minify/CSS/Compressor.php @@ -0,0 +1,250 @@ + + * @author http://code.google.com/u/1stvamp/ (Issue 64 patch) + */ +class Minify_CSS_Compressor { + + /** + * Minify a CSS string + * + * @param string $css + * + * @param array $options (currently ignored) + * + * @return string + */ + public static function process($css, $options = array()) + { + $obj = new Minify_CSS_Compressor($options); + return $obj->_process($css); + } + + /** + * @var array options + */ + protected $_options = null; + + /** + * @var bool Are we "in" a hack? + * + * I.e. are some browsers targetted until the next comment? + */ + protected $_inHack = false; + + + /** + * Constructor + * + * @param array $options (currently ignored) + * + * @return null + */ + private function __construct($options) { + $this->_options = $options; + } + + /** + * 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) + { + $m[1] = preg_replace('/ + \\s* + ( + "[^"]+" # 1 = family in double qutoes + |\'[^\']+\' # or 1 = family in single quotes + |[\\w\\-]+ # or 1 = unquoted family + ) + \\s* + /x', '$1', $m[1]); + return 'font-family:' . $m[1] . $m[2]; + } +} diff --git a/vendors/min/lib/Minify/CSS/UriRewriter.php b/vendors/min/lib/Minify/CSS/UriRewriter.php new file mode 100644 index 000000000..824c6bb2a --- /dev/null +++ b/vendors/min/lib/Minify/CSS/UriRewriter.php @@ -0,0 +1,270 @@ + + */ +class Minify_CSS_UriRewriter { + + /** + * Defines which class to call as part of callbacks, change this + * if you extend Minify_CSS_UriRewriter + * @var string + */ + protected static $className = 'Minify_CSS_UriRewriter'; + + /** + * rewrite() and rewriteRelative() append debugging information here + * @var string + */ + public static $debugText = ''; + + /** + * Rewrite file relative URIs as root relative in CSS files + * + * @param string $css + * + * @param string $currentDir The directory of the current CSS file. + * + * @param string $docRoot The document root of the web site in which + * the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']). + * + * @param array $symlinks (default = array()) If the CSS file is stored in + * a symlink-ed directory, provide an array of link paths to + * target paths, where the link paths are within the document root. Because + * paths need to be normalized for this to work, use "//" to substitute + * the doc root in the link paths (the array keys). E.g.: + * + * array('//symlink' => '/real/target/path') // unix + * array('//static' => 'D:\\staticStorage') // Windows + * + * + * @return string + */ + public static function rewrite($css, $currentDir, $docRoot = null, $symlinks = array()) + { + self::$_docRoot = self::_realpath( + $docRoot ? $docRoot : $_SERVER['DOCUMENT_ROOT'] + ); + self::$_currentDir = self::_realpath($currentDir); + self::$_symlinks = array(); + + // normalize symlinks + foreach ($symlinks as $link => $target) { + $link = ($link === '//') + ? self::$_docRoot + : str_replace('//', self::$_docRoot . '/', $link); + $link = strtr($link, '/', DIRECTORY_SEPARATOR); + self::$_symlinks[$link] = self::_realpath($target); + } + + self::$debugText .= "docRoot : " . self::$_docRoot . "\n" + . "currentDir : " . self::$_currentDir . "\n"; + if (self::$_symlinks) { + self::$debugText .= "symlinks : " . var_export(self::$_symlinks, 1) . "\n"; + } + self::$debugText .= "\n"; + + $css = self::_trimUrls($css); + + // rewrite + $css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/' + ,array(self::$className, '_processUriCB'), $css); + $css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/' + ,array(self::$className, '_processUriCB'), $css); + + return $css; + } + + /** + * 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; + } + + + /** + * @var string directory of this stylesheet + */ + private static $_currentDir = ''; + + /** + * @var string DOC_ROOT + */ + private static $_docRoot = ''; + + /** + * @var array directory replacements to map symlink targets back to their + * source (within the document root) E.g. '/var/www/symlink' => '/var/realpath' + */ + private static $_symlinks = array(); + + /** + * @var string path to prepend + */ + private static $_prependPath = null; + + private static function _trimUrls($css) + { + return preg_replace('/ + url\\( # url( + \\s* + ([^\\)]+?) # 1 = URI (assuming does not contain ")") + \\s* + \\) # ) + /x', 'url($1)', $css); + } + + private static function _processUriCB($m) + { + // $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/' + $isImport = ($m[0][0] === '@'); + // determine URI and the quote character (if any) + if ($isImport) { + $quoteChar = $m[1]; + $uri = $m[2]; + } else { + // $m[1] is either quoted or not + $quoteChar = ($m[1][0] === "'" || $m[1][0] === '"') + ? $m[1][0] + : ''; + $uri = ($quoteChar === '') + ? $m[1] + : substr($m[1], 1, strlen($m[1]) - 2); + } + // analyze URI + if ('/' !== $uri[0] // root-relative + && false === strpos($uri, '//') // protocol (non-data) + && 0 !== strpos($uri, 'data:') // data protocol + ) { + // URI is file-relative: rewrite depending on options + $uri = (self::$_prependPath !== null) + ? (self::$_prependPath . $uri) + : self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks); + } + return $isImport + ? "@import {$quoteChar}{$uri}{$quoteChar}" + : "url({$quoteChar}{$uri}{$quoteChar})"; + } + + /** + * Rewrite a file relative URI as root relative + * + * + * Minify_CSS_UriRewriter::rewriteRelative( + * '../img/hello.gif' + * , '/home/user/www/css' // path of CSS file + * , '/home/user/www' // doc root + * ); + * // returns '/img/hello.gif' + * + * // example where static files are stored in a symlinked directory + * Minify_CSS_UriRewriter::rewriteRelative( + * 'hello.gif' + * , '/var/staticFiles/theme' + * , '/home/user/www' + * , array('/home/user/www/static' => '/var/staticFiles') + * ); + * // returns '/static/theme/hello.gif' + * + * + * @param string $uri file relative URI + * + * @param string $realCurrentDir realpath of the current file's directory. + * + * @param string $realDocRoot realpath of the site document root. + * + * @param array $symlinks (default = array()) If the file is stored in + * a symlink-ed directory, provide an array of link paths to + * real target paths, where the link paths "appear" to be within the document + * root. E.g.: + * + * array('/home/foo/www/not/real/path' => '/real/target/path') // unix + * array('C:\\htdocs\\not\\real' => 'D:\\real\\target\\path') // Windows + * + * + * @return string + */ + public static function rewriteRelative($uri, $realCurrentDir, $realDocRoot, $symlinks = array()) + { + // prepend path with current dir separator (OS-independent) + $path = strtr($realCurrentDir, '/', DIRECTORY_SEPARATOR) + . DIRECTORY_SEPARATOR . strtr($uri, '/', DIRECTORY_SEPARATOR); + + self::$debugText .= "file-relative URI : {$uri}\n" + . "path prepended : {$path}\n"; + + // "unresolve" a symlink back to doc root + foreach ($symlinks as $link => $target) { + if (0 === strpos($path, $target)) { + // replace $target with $link + $path = $link . substr($path, strlen($target)); + + self::$debugText .= "symlink unresolved : {$path}\n"; + + break; + } + } + // strip doc root + $path = substr($path, strlen($realDocRoot)); + + self::$debugText .= "docroot stripped : {$path}\n"; + + // fix to root-relative URI + + $uri = strtr($path, '/\\', '//'); + + // remove /./ and /../ where possible + $uri = str_replace('/./', '/', $uri); + // inspired by patch from Oleg Cherniy + do { + $uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed); + } while ($changed); + + self::$debugText .= "traversals removed : {$uri}\n\n"; + + return $uri; + } + + /** + * Get realpath with any trailing slash removed. If realpath() fails, + * just remove the trailing slash. + * + * @param string $path + * + * @return mixed path with no trailing slash + */ + protected static function _realpath($path) + { + $realPath = realpath($path); + if ($realPath !== false) { + $path = $realPath; + } + return rtrim($path, '/\\'); + } +} -- cgit v1.2.3