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<?php |
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/** |
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* CSS utilities. |
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* |
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* Copyright: © 2009-2011 |
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* {@link http://www.websharks-inc.com/ WebSharks, Inc.} |
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* ( coded in the USA ) |
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* |
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* Released under the terms of the GNU General Public License. |
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* You should have received a copy of the GNU General Public License, |
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* along with this software. In the main directory, see: /licensing/ |
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* If not, see: {@link http://www.gnu.org/licenses/}. |
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* |
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* @package s2Member\Utilities |
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* @since 3.5 |
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*/ |
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if (realpath (__FILE__) === realpath ($_SERVER["SCRIPT_FILENAME"])) |
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exit("Do not access this file directly."); |
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/**/ |
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if (!class_exists ("c_ws_plugin__s2member_utils_css")) |
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{ |
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/** |
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* CSS utilities. |
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* |
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* @package s2Member\Utilities |
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* @since 3.5 |
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*/ |
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class c_ws_plugin__s2member_utils_css |
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{ |
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/** |
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* Handles CSS compression. |
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* |
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* @package s2Member\Utilities |
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* @since 3.5 |
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* |
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* @param str $css A string of CSS. |
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* @return str String of CSS, after compression. |
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*/ |
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public static function compress_css ($css = FALSE) |
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{ |
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$c6 = "/(\:#| #)([A-Z0-9]{6})/i"; |
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$css = preg_replace ("/\/\*(.*?)\*\//s", "", $css); |
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$css = preg_replace ("/[\r\n\t]+/", "", $css); |
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$css = preg_replace ("/ {2,}/", " ", $css); |
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$css = preg_replace ("/ , | ,|, /", ",", $css); |
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$css = preg_replace ("/ \> | \>|\> /", ">", $css); |
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$css = preg_replace ("/\[ /", "[", $css); |
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$css = preg_replace ("/ \]/", "]", $css); |
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$css = preg_replace ("/ \!\= | \!\=|\!\= /", "!=", $css); |
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$css = preg_replace ("/ \|\= | \|\=|\|\= /", "|=", $css); |
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$css = preg_replace ("/ \^\= | \^\=|\^\= /", "^=", $css); |
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$css = preg_replace ("/ \$\= | \$\=|\$\= /", "$=", $css); |
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$css = preg_replace ("/ \*\= | \*\=|\*\= /", "*=", $css); |
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$css = preg_replace ("/ ~\= | ~\=|~\= /", "~=", $css); |
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$css = preg_replace ("/ \= | \=|\= /", "=", $css); |
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$css = preg_replace ("/ \+ | \+|\+ /", "+", $css); |
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$css = preg_replace ("/ ~ | ~|~ /", "~", $css); |
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$css = preg_replace ("/ \{ | \{|\{ /", "{", $css); |
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$css = preg_replace ("/ \} | \}|\} /", "}", $css); |
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$css = preg_replace ("/ \: | \:|\: /", ":", $css); |
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$css = preg_replace ("/ ; | ;|; /", ";", $css); |
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$css = preg_replace ("/;\}/", "}", $css); |
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/**/ |
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return preg_replace_callback ($c6, "c_ws_plugin__s2member_utils_css::_compress_css_c3", $css); |
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} |
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/** |
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* Handles CSS compression of hex colors. |
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* |
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* Reduces 6 character hex codes to just 3 whenever possible. |
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* |
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* @package s2Member\Utilities |
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* @since 3.5 |
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* |
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* @param array $m Array of matches from ``preg_replace_callback()``. |
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* @return str Shortened hex code when possible, full hex code when not possible. |
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*/ |
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public static function _compress_css_c3 ($m = FALSE) |
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{ |
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if ($m[2][0] === $m[2][1] && $m[2][2] === $m[2][3] && $m[2][4] === $m[2][5]) |
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return $m[1] . $m[2][0] . $m[2][2] . $m[2][4]; |
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return $m[0]; |
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} |
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} |
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} |
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?> |
