--- /dev/null
+<?php
+// @codingStandardsIgnoreFile
+// @ignore comment_docblock_file:file
+// @ignore style_curly_braces:file
+// @ignore style_string_spacing:file
+// @ignore style_else_spacing:file
+// @ignore comment_comment_docblock_missing:file
+// @ignore comment_comment_eg:file
+// @ignore production_code:file
+// @ignore druplart_unary:file
+// @ignore style_uppercase_constants:file
+// @ignore comment_comment_space:file
+// @ignore druplart_conditional_assignment:file
+// @ignore style_paren_spacing:file
+// @ignore :file
+
+/*!
+ * cssmin.php v2.4.8-4
+ * Author: Tubal Martin - http://tubalmartin.me/
+ * Repo: https://github.com/tubalmartin/YUI-CSS-compressor-PHP-port
+ *
+ * This is a PHP port of the CSS minification tool distributed with YUICompressor,
+ * itself a port of the cssmin utility by Isaac Schlueter - http://foohack.com/
+ * Permission is hereby granted to use the PHP version under the same
+ * conditions as the YUICompressor.
+ */
+
+/*!
+ * YUI Compressor
+ * http://developer.yahoo.com/yui/compressor/
+ * Author: Julien Lecomte - http://www.julienlecomte.net/
+ * Copyright (c) 2013 Yahoo! Inc. All rights reserved.
+ * The copyrights embodied in the content of this file are licensed
+ * by Yahoo! Inc. under the BSD (revised) open source license.
+ */
+
+class CSSmin
+{
+ const NL = '___YUICSSMIN_PRESERVED_NL___';
+ const TOKEN = '___YUICSSMIN_PRESERVED_TOKEN_';
+ const COMMENT = '___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_';
+ const CLASSCOLON = '___YUICSSMIN_PSEUDOCLASSCOLON___';
+ const QUERY_FRACTION = '___YUICSSMIN_QUERY_FRACTION___';
+
+ private $comments;
+ private $preserved_tokens;
+ private $memory_limit;
+ private $max_execution_time;
+ private $pcre_backtrack_limit;
+ private $pcre_recursion_limit;
+ private $raise_php_limits;
+
+ /**
+ * @param bool|int $raise_php_limits
+ * If true, PHP settings will be raised if needed
+ */
+ public function __construct($raise_php_limits = TRUE)
+ {
+ // Set suggested PHP limits
+ $this->memory_limit = 128 * 1048576; // 128MB in bytes
+ $this->max_execution_time = 60; // 1 min
+ $this->pcre_backtrack_limit = 1000 * 1000;
+ $this->pcre_recursion_limit = 500 * 1000;
+
+ $this->raise_php_limits = (bool) $raise_php_limits;
+ }
+
+ /**
+ * Minify a string of CSS
+ * @param string $css
+ * @param int|bool $linebreak_pos
+ * @return string
+ */
+ public function run($css = '', $linebreak_pos = FALSE)
+ {
+ if (empty($css)) {
+ return '';
+ }
+
+ if ($this->raise_php_limits) {
+ $this->do_raise_php_limits();
+ }
+
+ $this->comments = array();
+ $this->preserved_tokens = array();
+
+ $start_index = 0;
+ $length = strlen($css);
+
+ $css = $this->extract_data_urls($css);
+
+ // collect all comment blocks...
+ while (($start_index = $this->index_of($css, '/*', $start_index)) >= 0) {
+ $end_index = $this->index_of($css, '*/', $start_index + 2);
+ if ($end_index < 0) {
+ $end_index = $length;
+ }
+ $comment_found = $this->str_slice($css, $start_index + 2, $end_index);
+ $this->comments[] = $comment_found;
+ $comment_preserve_string = self::COMMENT . (count($this->comments) - 1) . '___';
+ $css = $this->str_slice($css, 0, $start_index + 2) . $comment_preserve_string . $this->str_slice($css, $end_index);
+ // Set correct start_index: Fixes issue #2528130
+ $start_index = $end_index + 2 + strlen($comment_preserve_string) - strlen($comment_found);
+ }
+
+ // preserve strings so their content doesn't get accidentally minified
+ $css = preg_replace_callback('/(?:"(?:[^\\\\"]|\\\\.|\\\\)*")|'."(?:'(?:[^\\\\']|\\\\.|\\\\)*')/S", array($this, 'replace_string'), $css);
+
+ // Let's divide css code in chunks of 5.000 chars aprox.
+ // Reason: PHP's PCRE functions like preg_replace have a "backtrack limit"
+ // of 100.000 chars by default (php < 5.3.7) so if we're dealing with really
+ // long strings and a (sub)pattern matches a number of chars greater than
+ // the backtrack limit number (i.e. /(.*)/s) PCRE functions may fail silently
+ // returning NULL and $css would be empty.
+ $charset = '';
+ $charset_regexp = '/(@charset)( [^;]+;)/i';
+ $css_chunks = array();
+ $css_chunk_length = 5000; // aprox size, not exact
+ $start_index = 0;
+ $i = $css_chunk_length; // save initial iterations
+ $l = strlen($css);
+
+
+ // if the number of characters is 5000 or less, do not chunk
+ if ($l <= $css_chunk_length) {
+ $css_chunks[] = $css;
+ } else {
+ // chunk css code securely
+ while ($i < $l) {
+ $i += 50; // save iterations
+ if ($l - $start_index <= $css_chunk_length || $i >= $l) {
+ $css_chunks[] = $this->str_slice($css, $start_index);
+ break;
+ }
+ if ($css[$i - 1] === '}' && $i - $start_index > $css_chunk_length) {
+ // If there are two ending curly braces }} separated or not by spaces,
+ // join them in the same chunk (i.e. @media blocks)
+ $next_chunk = substr($css, $i);
+ if (preg_match('/^\s*\}/', $next_chunk)) {
+ $i = $i + $this->index_of($next_chunk, '}') + 1;
+ }
+
+ $css_chunks[] = $this->str_slice($css, $start_index, $i);
+ $start_index = $i;
+ }
+ }
+ }
+
+ // Minify each chunk
+ for ($i = 0, $n = count($css_chunks); $i < $n; $i++) {
+ $css_chunks[$i] = $this->minify($css_chunks[$i], $linebreak_pos);
+ // Keep the first @charset at-rule found
+ if (empty($charset) && preg_match($charset_regexp, $css_chunks[$i], $matches)) {
+ $charset = strtolower($matches[1]) . $matches[2];
+ }
+ // Delete all @charset at-rules
+ $css_chunks[$i] = preg_replace($charset_regexp, '', $css_chunks[$i]);
+ }
+
+ // Update the first chunk and push the charset to the top of the file.
+ $css_chunks[0] = $charset . $css_chunks[0];
+
+ return implode('', $css_chunks);
+ }
+
+ /**
+ * Sets the memory limit for this script
+ * @param int|string $limit
+ */
+ public function set_memory_limit($limit)
+ {
+ $this->memory_limit = $this->normalize_int($limit);
+ }
+
+ /**
+ * Sets the maximum execution time for this script
+ * @param int|string $seconds
+ */
+ public function set_max_execution_time($seconds)
+ {
+ $this->max_execution_time = (int) $seconds;
+ }
+
+ /**
+ * Sets the PCRE backtrack limit for this script
+ * @param int $limit
+ */
+ public function set_pcre_backtrack_limit($limit)
+ {
+ $this->pcre_backtrack_limit = (int) $limit;
+ }
+
+ /**
+ * Sets the PCRE recursion limit for this script
+ * @param int $limit
+ */
+ public function set_pcre_recursion_limit($limit)
+ {
+ $this->pcre_recursion_limit = (int) $limit;
+ }
+
+ /**
+ * Try to configure PHP to use at least the suggested minimum settings
+ */
+ private function do_raise_php_limits()
+ {
+ $php_limits = array(
+ 'memory_limit' => $this->memory_limit,
+ 'max_execution_time' => $this->max_execution_time,
+ 'pcre.backtrack_limit' => $this->pcre_backtrack_limit,
+ 'pcre.recursion_limit' => $this->pcre_recursion_limit
+ );
+
+ // If current settings are higher respect them.
+ foreach ($php_limits as $name => $suggested) {
+ $current = $this->normalize_int(ini_get($name));
+ // memory_limit exception: allow -1 for "no memory limit".
+ if ($current > -1 && ($suggested == -1 || $current < $suggested)) {
+ ini_set($name, $suggested);
+ }
+ }
+ }
+
+ /**
+ * Does bulk of the minification
+ * @param string $css
+ * @param int|bool $linebreak_pos
+ * @return string
+ */
+ private function minify($css, $linebreak_pos)
+ {
+ // strings are safe, now wrestle the comments
+ for ($i = 0, $max = count($this->comments); $i < $max; $i++) {
+
+ $token = $this->comments[$i];
+ $placeholder = '/' . self::COMMENT . $i . '___/';
+
+ // ! in the first position of the comment means preserve
+ // so push to the preserved tokens keeping the !
+ if (substr($token, 0, 1) === '!') {
+ $this->preserved_tokens[] = $token;
+ $token_tring = self::TOKEN . (count($this->preserved_tokens) - 1) . '___';
+ $css = preg_replace($placeholder, $token_tring, $css, 1);
+ // Preserve new lines for /*! important comments
+ $css = preg_replace('/\s*[\n\r\f]+\s*(\/\*'. $token_tring .')/S', self::NL.'$1', $css);
+ $css = preg_replace('/('. $token_tring .'\*\/)\s*[\n\r\f]+\s*/', '$1'.self::NL, $css);
+ continue;
+ }
+
+ // \ in the last position looks like hack for Mac/IE5
+ // shorten that to /*\*/ and the next one to /**/
+ if (substr($token, (strlen($token) - 1), 1) === '\\') {
+ $this->preserved_tokens[] = '\\';
+ $css = preg_replace($placeholder, self::TOKEN . (count($this->preserved_tokens) - 1) . '___', $css, 1);
+ $i = $i + 1; // attn: advancing the loop
+ $this->preserved_tokens[] = '';
+ $css = preg_replace('/' . self::COMMENT . $i . '___/', self::TOKEN . (count($this->preserved_tokens) - 1) . '___', $css, 1);
+ continue;
+ }
+
+ // keep empty comments after child selectors (IE7 hack)
+ // e.g. html >/**/ body
+ if (strlen($token) === 0) {
+ $start_index = $this->index_of($css, $this->str_slice($placeholder, 1, -1));
+ if ($start_index > 2) {
+ if (substr($css, $start_index - 3, 1) === '>') {
+ $this->preserved_tokens[] = '';
+ $css = preg_replace($placeholder, self::TOKEN . (count($this->preserved_tokens) - 1) . '___', $css, 1);
+ }
+ }
+ }
+
+ // in all other cases kill the comment
+ $css = preg_replace('/\/\*' . $this->str_slice($placeholder, 1, -1) . '\*\//', '', $css, 1);
+ }
+
+
+ // Normalize all whitespace strings to single spaces. Easier to work with that way.
+ $css = preg_replace('/\s+/', ' ', $css);
+
+ // Fix IE7 issue on matrix filters which browser accept whitespaces between Matrix parameters
+ $css = preg_replace_callback('/\s*filter\:\s*progid:DXImageTransform\.Microsoft\.Matrix\(([^\)]+)\)/', array($this, 'preserve_old_IE_specific_matrix_definition'), $css);
+
+ // Shorten & preserve calculations calc(...) since spaces are important
+ $css = preg_replace_callback('/calc(\(((?:[^\(\)]+|(?1))*)\))/i', array($this, 'replace_calc'), $css);
+
+ // Replace positive sign from numbers preceded by : or a white-space before the leading space is removed
+ // +1.2em to 1.2em, +.8px to .8px, +2% to 2%
+ $css = preg_replace('/((?<!\\\\)\:|\s)\+(\.?\d+)/S', '$1$2', $css);
+
+ // Remove leading zeros from integer and float numbers preceded by : or a white-space
+ // 000.6 to .6, -0.8 to -.8, 0050 to 50, -01.05 to -1.05
+ $css = preg_replace('/((?<!\\\\)\:|\s)(\-?)0+(\.?\d+)/S', '$1$2$3', $css);
+
+ // Remove trailing zeros from float numbers preceded by : or a white-space
+ // -6.0100em to -6.01em, .0100 to .01, 1.200px to 1.2px
+ $css = preg_replace('/((?<!\\\\)\:|\s)(\-?)(\d?\.\d+?)0+([^\d])/S', '$1$2$3$4', $css);
+
+ // Remove trailing .0 -> -9.0 to -9
+ $css = preg_replace('/((?<!\\\\)\:|\s)(\-?\d+)\.0([^\d])/S', '$1$2$3', $css);
+
+ // Replace 0 length numbers with 0
+ $css = preg_replace('/((?<!\\\\)\:|\s)\-?\.?0+([^\d])/S', '${1}0$2', $css);
+
+ // Remove the spaces before the things that should not have spaces before them.
+ // But, be careful not to turn "p :link {...}" into "p:link{...}"
+ // Swap out any pseudo-class colons with the token, and then swap back.
+ $css = preg_replace_callback('/(?:^|\})[^\{]*\s+\:/', array($this, 'replace_colon'), $css);
+
+ // Remove spaces before the things that should not have spaces before them.
+ $css = preg_replace('/\s+([\!\{\}\;\:\>\+\(\)\]\~\=,])/', '$1', $css);
+
+ // Restore spaces for !important
+ $css = preg_replace('/\!important/i', ' !important', $css);
+
+ // bring back the colon
+ $css = preg_replace('/' . self::CLASSCOLON . '/', ':', $css);
+
+ // retain space for special IE6 cases
+ $css = preg_replace_callback('/\:first\-(line|letter)(\{|,)/i', array($this, 'lowercase_pseudo_first'), $css);
+
+ // no space after the end of a preserved comment
+ $css = preg_replace('/\*\/ /', '*/', $css);
+
+ // lowercase some popular @directives
+ $css = preg_replace_callback('/@(font-face|import|(?:-(?:atsc|khtml|moz|ms|o|wap|webkit)-)?keyframe|media|page|namespace)/i', array($this, 'lowercase_directives'), $css);
+
+ // lowercase some more common pseudo-elements
+ $css = preg_replace_callback('/:(active|after|before|checked|disabled|empty|enabled|first-(?:child|of-type)|focus|hover|last-(?:child|of-type)|link|only-(?:child|of-type)|root|:selection|target|visited)/i', array($this, 'lowercase_pseudo_elements'), $css);
+
+ // lowercase some more common functions
+ $css = preg_replace_callback('/:(lang|not|nth-child|nth-last-child|nth-last-of-type|nth-of-type|(?:-(?:moz|webkit)-)?any)\(/i', array($this, 'lowercase_common_functions'), $css);
+
+ // lower case some common function that can be values
+ // NOTE: rgb() isn't useful as we replace with #hex later, as well as and() is already done for us
+ $css = preg_replace_callback('/([:,\( ]\s*)(attr|color-stop|from|rgba|to|url|(?:-(?:atsc|khtml|moz|ms|o|wap|webkit)-)?(?:calc|max|min|(?:repeating-)?(?:linear|radial)-gradient)|-webkit-gradient)/iS', array($this, 'lowercase_common_functions_values'), $css);
+
+ // Put the space back in some cases, to support stuff like
+ // @media screen and (-webkit-min-device-pixel-ratio:0){
+ $css = preg_replace('/\band\(/i', 'and (', $css);
+
+ // Remove the spaces after the things that should not have spaces after them.
+ $css = preg_replace('/([\!\{\}\:;\>\+\(\[\~\=,])\s+/S', '$1', $css);
+
+ // remove unnecessary semicolons
+ $css = preg_replace('/;+\}/', '}', $css);
+
+ // Fix for issue: #2528146
+ // Restore semicolon if the last property is prefixed with a `*` (lte IE7 hack)
+ // to avoid issues on Symbian S60 3.x browsers.
+ $css = preg_replace('/(\*[a-z0-9\-]+\s*\:[^;\}]+)(\})/', '$1;$2', $css);
+
+ // Replace 0 <length> and 0 <percentage> values with 0.
+ // <length> data type: https://developer.mozilla.org/en-US/docs/Web/CSS/length
+ // <percentage> data type: https://developer.mozilla.org/en-US/docs/Web/CSS/percentage
+ $css = preg_replace('/([^\\\\]\:|\s)0(?:em|ex|ch|rem|vw|vh|vm|vmin|cm|mm|in|px|pt|pc|%)/iS', '${1}0', $css);
+
+ // 0% step in a keyframe? restore the % unit
+ $css = preg_replace_callback('/(@[a-z\-]*?keyframes[^\{]+\{)(.*?)(\}\})/iS', array($this, 'replace_keyframe_zero'), $css);
+
+ // Replace 0 0; or 0 0 0; or 0 0 0 0; with 0.
+ $css = preg_replace('/\:0(?: 0){1,3}(;|\}| \!)/', ':0$1', $css);
+
+ // Fix for issue: #2528142
+ // Replace text-shadow:0; with text-shadow:0 0 0;
+ $css = preg_replace('/(text-shadow\:0)(;|\}| \!)/i', '$1 0 0$2', $css);
+
+ // Replace background-position:0; with background-position:0 0;
+ // same for transform-origin
+ // Changing -webkit-mask-position: 0 0 to just a single 0 will result in the second parameter defaulting to 50% (center)
+ $css = preg_replace('/(background|background\-position|webkit\-mask\-position|(?:webkit|moz|o|ms|)\-?transform\-origin)\:0(;|\}| \!)/iS', '$1:0 0$2', $css);
+
+ // Shorten colors from rgb(51,102,153) to #336699, rgb(100%,0%,0%) to #ff0000 (sRGB color space)
+ // Shorten colors from hsl(0, 100%, 50%) to #ff0000 (sRGB color space)
+ // This makes it more likely that it'll get further compressed in the next step.
+ $css = preg_replace_callback('/rgb\s*\(\s*([0-9,\s\-\.\%]+)\s*\)(.{1})/i', array($this, 'rgb_to_hex'), $css);
+ $css = preg_replace_callback('/hsl\s*\(\s*([0-9,\s\-\.\%]+)\s*\)(.{1})/i', array($this, 'hsl_to_hex'), $css);
+
+ // Shorten colors from #AABBCC to #ABC or short color name.
+ $css = $this->compress_hex_colors($css);
+
+ // border: none to border:0, outline: none to outline:0
+ $css = preg_replace('/(border\-?(?:top|right|bottom|left|)|outline)\:none(;|\}| \!)/iS', '$1:0$2', $css);
+
+ // shorter opacity IE filter
+ $css = preg_replace('/progid\:DXImageTransform\.Microsoft\.Alpha\(Opacity\=/i', 'alpha(opacity=', $css);
+
+ // Find a fraction that is used for Opera's -o-device-pixel-ratio query
+ // Add token to add the "\" back in later
+ $css = preg_replace('/\(([a-z\-]+):([0-9]+)\/([0-9]+)\)/i', '($1:$2'. self::QUERY_FRACTION .'$3)', $css);
+
+ // Remove empty rules.
+ $css = preg_replace('/[^\};\{\/]+\{\}/S', '', $css);
+
+ // Add "/" back to fix Opera -o-device-pixel-ratio query
+ $css = preg_replace('/'. self::QUERY_FRACTION .'/', '/', $css);
+
+ // Replace multiple semi-colons in a row by a single one
+ // See SF bug #1980989
+ $css = preg_replace('/;;+/', ';', $css);
+
+ // Restore new lines for /*! important comments
+ $css = preg_replace('/'. self::NL .'/', "\n", $css);
+
+ // Lowercase all uppercase properties
+ $css = preg_replace_callback('/(\{|\;)([A-Z\-]+)(\:)/', array($this, 'lowercase_properties'), $css);
+
+ // Some source control tools don't like it when files containing lines longer
+ // than, say 8000 characters, are checked in. The linebreak option is used in
+ // that case to split long lines after a specific column.
+ if ($linebreak_pos !== FALSE && (int) $linebreak_pos >= 0) {
+ $linebreak_pos = (int) $linebreak_pos;
+ $start_index = $i = 0;
+ while ($i < strlen($css)) {
+ $i++;
+ if ($css[$i - 1] === '}' && $i - $start_index > $linebreak_pos) {
+ $css = $this->str_slice($css, 0, $i) . "\n" . $this->str_slice($css, $i);
+ $start_index = $i;
+ }
+ }
+ }
+
+ // restore preserved comments and strings in reverse order
+ for ($i = count($this->preserved_tokens) - 1; $i >= 0; $i--) {
+ $css = preg_replace('/' . self::TOKEN . $i . '___/', $this->preserved_tokens[$i], $css, 1);
+ }
+
+ // Trim the final string (for any leading or trailing white spaces)
+ return trim($css);
+ }
+
+ /**
+ * Utility method to replace all data urls with tokens before we start
+ * compressing, to avoid performance issues running some of the subsequent
+ * regexes against large strings chunks.
+ *
+ * @param string $css
+ * @return string
+ */
+ private function extract_data_urls($css)
+ {
+ // Leave data urls alone to increase parse performance.
+ $max_index = strlen($css) - 1;
+ $append_index = $index = $last_index = $offset = 0;
+ $sb = array();
+ $pattern = '/url\(\s*(["\']?)data\:/i';
+
+ // Since we need to account for non-base64 data urls, we need to handle
+ // ' and ) being part of the data string. Hence switching to indexOf,
+ // to determine whether or not we have matching string terminators and
+ // handling sb appends directly, instead of using matcher.append* methods.
+
+ while (preg_match($pattern, $css, $m, 0, $offset)) {
+ $index = $this->index_of($css, $m[0], $offset);
+ $last_index = $index + strlen($m[0]);
+ $start_index = $index + 4; // "url(".length()
+ $end_index = $last_index - 1;
+ $terminator = $m[1]; // ', " or empty (not quoted)
+ $found_terminator = FALSE;
+
+ if (strlen($terminator) === 0) {
+ $terminator = ')';
+ }
+
+ while ($found_terminator === FALSE && $end_index+1 <= $max_index) {
+ $end_index = $this->index_of($css, $terminator, $end_index + 1);
+
+ // endIndex == 0 doesn't really apply here
+ if ($end_index > 0 && substr($css, $end_index - 1, 1) !== '\\') {
+ $found_terminator = TRUE;
+ if (')' != $terminator) {
+ $end_index = $this->index_of($css, ')', $end_index);
+ }
+ }
+ }
+
+ // Enough searching, start moving stuff over to the buffer
+ $sb[] = $this->str_slice($css, $append_index, $index);
+
+ if ($found_terminator) {
+ $token = $this->str_slice($css, $start_index, $end_index);
+ $token = preg_replace('/\s+/', '', $token);
+ $this->preserved_tokens[] = $token;
+
+ $preserver = 'url(' . self::TOKEN . (count($this->preserved_tokens) - 1) . '___)';
+ $sb[] = $preserver;
+
+ $append_index = $end_index + 1;
+ } else {
+ // No end terminator found, re-add the whole match. Should we throw/warn here?
+ $sb[] = $this->str_slice($css, $index, $last_index);
+ $append_index = $last_index;
+ }
+
+ $offset = $last_index;
+ }
+
+ $sb[] = $this->str_slice($css, $append_index);
+
+ return implode('', $sb);
+ }
+
+ /**
+ * Utility method to compress hex color values of the form #AABBCC to #ABC or short color name.
+ *
+ * DOES NOT compress CSS ID selectors which match the above pattern (which would break things).
+ * e.g. #AddressForm { ... }
+ *
+ * DOES NOT compress IE filters, which have hex color values (which would break things).
+ * e.g. filter: chroma(color="#FFFFFF");
+ *
+ * DOES NOT compress invalid hex values.
+ * e.g. background-color: #aabbccdd
+ *
+ * @param string $css
+ * @return string
+ */
+ private function compress_hex_colors($css)
+ {
+ // Look for hex colors inside { ... } (to avoid IDs) and which don't have a =, or a " in front of them (to avoid filters)
+ $pattern = '/(\=\s*?["\']?)?#([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])(\}|[^0-9a-f{][^{]*?\})/iS';
+ $_index = $index = $last_index = $offset = 0;
+ $sb = array();
+ // See: http://ajaxmin.codeplex.com/wikipage?title=CSS%20Colors
+ $short_safe = array(
+ '#808080' => 'gray',
+ '#008000' => 'green',
+ '#800000' => 'maroon',
+ '#000080' => 'navy',
+ '#808000' => 'olive',
+ '#ffa500' => 'orange',
+ '#800080' => 'purple',
+ '#c0c0c0' => 'silver',
+ '#008080' => 'teal',
+ '#f00' => 'red'
+ );
+
+ while (preg_match($pattern, $css, $m, 0, $offset)) {
+ $index = $this->index_of($css, $m[0], $offset);
+ $last_index = $index + strlen($m[0]);
+ $is_filter = $m[1] !== null && $m[1] !== '';
+
+ $sb[] = $this->str_slice($css, $_index, $index);
+
+ if ($is_filter) {
+ // Restore, maintain case, otherwise filter will break
+ $sb[] = $m[1] . '#' . $m[2] . $m[3] . $m[4] . $m[5] . $m[6] . $m[7];
+ } else {
+ if (strtolower($m[2]) == strtolower($m[3]) &&
+ strtolower($m[4]) == strtolower($m[5]) &&
+ strtolower($m[6]) == strtolower($m[7])) {
+ // Compress.
+ $hex = '#' . strtolower($m[3] . $m[5] . $m[7]);
+ } else {
+ // Non compressible color, restore but lower case.
+ $hex = '#' . strtolower($m[2] . $m[3] . $m[4] . $m[5] . $m[6] . $m[7]);
+ }
+ // replace Hex colors to short safe color names
+ $sb[] = array_key_exists($hex, $short_safe) ? $short_safe[$hex] : $hex;
+ }
+
+ $_index = $offset = $last_index - strlen($m[8]);
+ }
+
+ $sb[] = $this->str_slice($css, $_index);
+
+ return implode('', $sb);
+ }
+
+ /* CALLBACKS
+ * ---------------------------------------------------------------------------------------------
+ */
+
+ private function replace_string($matches)
+ {
+ $match = $matches[0];
+ $quote = substr($match, 0, 1);
+ // Must use addcslashes in PHP to avoid parsing of backslashes
+ $match = addcslashes($this->str_slice($match, 1, -1), '\\');
+
+ // maybe the string contains a comment-like substring?
+ // one, maybe more? put'em back then
+ if (($pos = $this->index_of($match, self::COMMENT)) >= 0) {
+ for ($i = 0, $max = count($this->comments); $i < $max; $i++) {
+ $match = preg_replace('/' . self::COMMENT . $i . '___/', $this->comments[$i], $match, 1);
+ }
+ }
+
+ // minify alpha opacity in filter strings
+ $match = preg_replace('/progid\:DXImageTransform\.Microsoft\.Alpha\(Opacity\=/i', 'alpha(opacity=', $match);
+
+ $this->preserved_tokens[] = $match;
+ return $quote . self::TOKEN . (count($this->preserved_tokens) - 1) . '___' . $quote;
+ }
+
+ private function replace_colon($matches)
+ {
+ return preg_replace('/\:/', self::CLASSCOLON, $matches[0]);
+ }
+
+ private function replace_calc($matches)
+ {
+ $this->preserved_tokens[] = trim(preg_replace('/\s*([\*\/\(\),])\s*/', '$1', $matches[2]));
+ return 'calc('. self::TOKEN . (count($this->preserved_tokens) - 1) . '___' . ')';
+ }
+
+ private function preserve_old_IE_specific_matrix_definition($matches)
+ {
+ $this->preserved_tokens[] = $matches[1];
+ return 'filter:progid:DXImageTransform.Microsoft.Matrix(' . self::TOKEN . (count($this->preserved_tokens) - 1) . '___' . ')';
+ }
+
+ private function replace_keyframe_zero($matches)
+ {
+ return $matches[1] . preg_replace('/0(\{|,[^\)\{]+\{)/', '0%$1', $matches[2]) . $matches[3];
+ }
+
+ private function rgb_to_hex($matches)
+ {
+ // Support for percentage values rgb(100%, 0%, 45%);
+ if ($this->index_of($matches[1], '%') >= 0){
+ $rgbcolors = explode(',', str_replace('%', '', $matches[1]));
+ for ($i = 0; $i < count($rgbcolors); $i++) {
+ $rgbcolors[$i] = $this->round_number(floatval($rgbcolors[$i]) * 2.55);
+ }
+ } else {
+ $rgbcolors = explode(',', $matches[1]);
+ }
+
+ // Values outside the sRGB color space should be clipped (0-255)
+ for ($i = 0; $i < count($rgbcolors); $i++) {
+ $rgbcolors[$i] = $this->clamp_number(intval($rgbcolors[$i], 10), 0, 255);
+ $rgbcolors[$i] = sprintf("%02x", $rgbcolors[$i]);
+ }
+
+ // Fix for issue #2528093
+ if (!preg_match('/[\s\,\);\}]/', $matches[2])){
+ $matches[2] = ' ' . $matches[2];
+ }
+
+ return '#' . implode('', $rgbcolors) . $matches[2];
+ }
+
+ private function hsl_to_hex($matches)
+ {
+ $values = explode(',', str_replace('%', '', $matches[1]));
+ $h = floatval($values[0]);
+ $s = floatval($values[1]);
+ $l = floatval($values[2]);
+
+ // Wrap and clamp, then fraction!
+ $h = ((($h % 360) + 360) % 360) / 360;
+ $s = $this->clamp_number($s, 0, 100) / 100;
+ $l = $this->clamp_number($l, 0, 100) / 100;
+
+ if ($s == 0) {
+ $r = $g = $b = $this->round_number(255 * $l);
+ } else {
+ $v2 = $l < 0.5 ? $l * (1 + $s) : ($l + $s) - ($s * $l);
+ $v1 = (2 * $l) - $v2;
+ $r = $this->round_number(255 * $this->hue_to_rgb($v1, $v2, $h + (1/3)));
+ $g = $this->round_number(255 * $this->hue_to_rgb($v1, $v2, $h));
+ $b = $this->round_number(255 * $this->hue_to_rgb($v1, $v2, $h - (1/3)));
+ }
+
+ return $this->rgb_to_hex(array('', $r.','.$g.','.$b, $matches[2]));
+ }
+
+ private function lowercase_pseudo_first($matches)
+ {
+ return ':first-'. strtolower($matches[1]) .' '. $matches[2];
+ }
+
+ private function lowercase_directives($matches)
+ {
+ return '@'. strtolower($matches[1]);
+ }
+
+ private function lowercase_pseudo_elements($matches)
+ {
+ return ':'. strtolower($matches[1]);
+ }
+
+ private function lowercase_common_functions($matches)
+ {
+ return ':'. strtolower($matches[1]) .'(';
+ }
+
+ private function lowercase_common_functions_values($matches)
+ {
+ return $matches[1] . strtolower($matches[2]);
+ }
+
+ private function lowercase_properties($matches)
+ {
+ return $matches[1].strtolower($matches[2]).$matches[3];
+ }
+
+ /* HELPERS
+ * ---------------------------------------------------------------------------------------------
+ */
+
+ private function hue_to_rgb($v1, $v2, $vh)
+ {
+ $vh = $vh < 0 ? $vh + 1 : ($vh > 1 ? $vh - 1 : $vh);
+ if ($vh * 6 < 1) return $v1 + ($v2 - $v1) * 6 * $vh;
+ if ($vh * 2 < 1) return $v2;
+ if ($vh * 3 < 2) return $v1 + ($v2 - $v1) * ((2/3) - $vh) * 6;
+ return $v1;
+ }
+
+ private function round_number($n)
+ {
+ return intval(floor(floatval($n) + 0.5), 10);
+ }
+
+ private function clamp_number($n, $min, $max)
+ {
+ return min(max($n, $min), $max);
+ }
+
+ /**
+ * PHP port of Javascript's "indexOf" function for strings only
+ * Author: Tubal Martin http://blog.margenn.com
+ *
+ * @param string $haystack
+ * @param string $needle
+ * @param int $offset index (optional)
+ * @return int
+ */
+ private function index_of($haystack, $needle, $offset = 0)
+ {
+ $index = strpos($haystack, $needle, $offset);
+
+ return ($index !== FALSE) ? $index : -1;
+ }
+
+ /**
+ * PHP port of Javascript's "slice" function for strings only
+ * Author: Tubal Martin http://blog.margenn.com
+ * Tests: http://margenn.com/tubal/str_slice/
+ *
+ * @param string $str
+ * @param int $start index
+ * @param int|bool $end index (optional)
+ * @return string
+ */
+ private function str_slice($str, $start = 0, $end = FALSE)
+ {
+ if ($end !== FALSE && ($start < 0 || $end <= 0)) {
+ $max = strlen($str);
+
+ if ($start < 0) {
+ if (($start = $max + $start) < 0) {
+ return '';
+ }
+ }
+
+ if ($end < 0) {
+ if (($end = $max + $end) < 0) {
+ return '';
+ }
+ }
+
+ if ($end <= $start) {
+ return '';
+ }
+ }
+
+ $slice = ($end === FALSE) ? substr($str, $start) : substr($str, $start, $end - $start);
+ return ($slice === FALSE) ? '' : $slice;
+ }
+
+ /**
+ * Convert strings like "64M" or "30" to int values
+ * @param mixed $size
+ * @return int
+ */
+ private function normalize_int($size)
+ {
+ if (is_string($size)) {
+ switch (substr($size, -1)) {
+ case 'M': case 'm': return (int) $size * 1048576;
+ case 'K': case 'k': return (int) $size * 1024;
+ case 'G': case 'g': return (int) $size * 1073741824;
+ }
+ }
+
+ return (int) $size;
+ }
+}
projects / yaffs-website / blobdiff