From 19985dbb8c0aa66dc4bf7905abc1148de909097d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= Date: Tue, 11 Jan 2022 12:35:47 +0100 Subject: prvi-commit --- admin/survey/minify/lib/Minify/CSS/Compressor.php | 275 ++++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 admin/survey/minify/lib/Minify/CSS/Compressor.php (limited to 'admin/survey/minify/lib/Minify/CSS/Compressor.php') diff --git a/admin/survey/minify/lib/Minify/CSS/Compressor.php b/admin/survey/minify/lib/Minify/CSS/Compressor.php new file mode 100644 index 0000000..e0ccabb --- /dev/null +++ b/admin/survey/minify/lib/Minify/CSS/Compressor.php @@ -0,0 +1,275 @@ + + * @author http://code.google.com/u/1stvamp/ (Issue 64 patch) + * + * @deprecated Use CSSmin (tubalmartin/cssmin) + */ +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 + */ + 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 $css + * + * @return string + */ + protected function _process($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 + $pattern = '@\\s*/\\*([\\s\\S]*?)\\*/\\s*@'; + $css = preg_replace_callback($pattern, 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 + $pattern = '/ + url\\( # url( + \\s* + ([^\\)]+?) # 1 = the URL (really just a bunch of non right parenthesis) + \\s* + \\) # ) + /x'; + $css = preg_replace($pattern, 'url($1)', $css); + + // remove ws between rules and colons + $pattern = '/ + \\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'; + $css = preg_replace($pattern, '$1$2:$3', $css); + + // remove ws in selectors + $pattern = '/ + (?: # non-capture + \\s* + [^~>+,\\s]+ # selector part + \\s* + [,>+~] # combinators + )+ + \\s* + [^~>+,\\s]+ # selector part + { # open declaration block + /x'; + $css = preg_replace_callback($pattern, array($this, '_selectorsCB'), $css); + + // minimize hex colors + $pattern = '/([^=])#([a-f\\d])\\2([a-f\\d])\\3([a-f\\d])\\4([\\s;\\}])/i'; + $css = preg_replace($pattern, '$1#$2$3$4$5', $css); + + // remove spaces between font families + $pattern = '/font-family:([^;}]+)([;}])/'; + $css = preg_replace_callback($pattern, 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) + $pattern = '/([\\w#\\.\\*]+)\\s+([\\w#\\.\\*]+){/'; + $css = preg_replace($pattern, "$1\n$2{", $css); + + // Use newline after 1st numeric value (to limit line lengths). + $pattern = '/ + ((?:padding|margin|border|outline):\\d+(?:px|em)?) # 1 = prop : 1st numeric value + \\s+ + /x'; + $css = preg_replace($pattern, "$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 + $pattern = '@ + ^/ # comment started like /*/ + \\s* + (\\S[\\s\\S]+?) # has at least some non-ws content + \\s* + /\\* # ends like /*/ or /**/ + @x'; + if (preg_match($pattern, $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 + $flags = PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY; + $pieces = preg_split('/(\'[^\']+\'|"[^"]+")/', $m[1], null, $flags); + $out = 'font-family:'; + + while (null !== ($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]; + } +} -- cgit v1.2.3