combined css and js are minified

git-svn-id: http://piwigo.org/svn/trunk@8170 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 868 insertions, 0 deletions

diff --git a/include/cssmin.class.php b/include/cssmin.class.php
new file mode 100644
index 000000000..6b38831e5
--- /dev/null
+++ b/include/cssmin.class.php
@@ -0,0 +1,868 @@
+<?php
+/**
+ * CssMin - A (simple) css minifier with benefits
+ * 
+ * --
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * --
+ *
+ * @package		CssMin
+ * @author		Joe Scylla <joe.scylla@gmail.com>
+ * @copyright	2008 - 2010 Joe Scylla <joe.scylla@gmail.com>
+ * @license		http://opensource.org/licenses/mit-license.php MIT License
+ * @version		2.0.1.0064 (2010-09-30)
+ */
+class CssMin
+	{
+	/**
+	 * State: Is in document
+	 * 
+	 * @var integer
+	 */
+	const T_DOCUMENT = 1;
+	/**
+	 * Token: Comment
+	 * 
+	 * @var integer
+	 */
+	const T_COMMENT = 2;
+	/**
+	 * Token: Generic at-rule
+	 * 
+	 * @var integer
+	 */
+	const T_AT_RULE = 3;
+	/**
+	 * Token: Start of @media block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_MEDIA_START = 4;
+	/**
+	 * State: Is in @media block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_MEDIA = 5;
+	/**
+	 * Token: End of @media block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_MEDIA_END = 6;
+	/**
+	 * Token: Start of @font-face block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_FONT_FACE_START = 7;
+	/**
+	 * State: Is in @font-face block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_FONT_FACE = 8;
+	/**
+	 * Token: @font-face declaration
+	 * 
+	 * @var integer
+	 */
+	const T_FONT_FACE_DECLARATION = 9;
+	/**
+	 * Token: End of @font-face block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_FONT_FACE_END = 10;
+	/**
+	 * Token: Start of @page block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_PAGE_START = 11;
+	/**
+	 * State: Is in @page block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_PAGE = 12;
+	/**
+	 * Token: @page declaration
+	 * 
+	 * @var integer
+	 */
+	const T_PAGE_DECLARATION = 13;
+	/**
+	 * Token: End of @page block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_PAGE_END = 14;
+	/**
+	 * Token: Start of ruleset
+	 * 
+	 * @var integer
+	 */
+	const T_RULESET_START = 15;
+	/**
+	 * Token: Ruleset selectors
+	 * 
+	 * @var integer
+	 */
+	const T_SELECTORS = 16;
+	/**
+	 * Token: Start of declarations
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATIONS_START = 17;
+	/**
+	 * State: Is in declarations
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATIONS = 18;
+	/**
+	 * Token: Declaration
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATION = 19;
+	/**
+	 * Token: End of declarations
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATIONS_END = 20;
+	/**
+	 * Token: End of ruleset
+	 * 
+	 * @var integer
+	 */
+	const T_RULESET_END = 21;
+	/**
+	 * Token: Start of @variables block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_VARIABLES_START = 100;
+	/**
+	 * State: Is in @variables block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_VARIABLES = 101;
+	/**
+	 * Token: @variables declaration
+	 * 
+	 * @var integer
+	 */
+	const T_VARIABLE_DECLARATION = 102;
+	/**
+	 * Token: End of @variables block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_VARIABLES_END = 103;
+	/**
+	 * State: Is in string
+	 * 
+	 * @var integer
+	 */
+	const T_STRING = 254;
+	/**
+	 * State: Is in url string property
+	 * 
+	 * @var integer
+	 */
+	const T_STRING_URL = 255;
+	/**
+	 * Css transformations table
+	 * 
+	 * @var array
+	 */
+	private static $transformations = array
+		(
+		"border-radius"					=> array("-moz-border-radius", "-webkit-border-radius", "-khtml-border-radius"),
+		"border-top-left-radius"		=> array("-moz-border-radius-topleft", "-webkit-border-top-left-radius", "-khtml-top-left-radius"),
+		"border-top-right-radius"		=> array("-moz-border-radius-topright", "-webkit-border-top-right-radius", "-khtml-top-right-radius"),
+		"border-bottom-right-radius"	=> array("-moz-border-radius-bottomright", "-webkit-border-bottom-right-radius", "-khtml-border-bottom-right-radius"),
+		"border-bottom-left-radius"		=> array("-moz-border-radius-bottomleft", "-webkit-border-bottom-left-radius", "-khtml-border-bottom-left-radius"),
+		"box-shadow"					=> array("-moz-box-shadow", "-webkit-box-shadow", "-khtml-box-shadow"),
+		"opacity"						=> array(array("CssMin", "_tOpacity")),
+		"text-shadow"					=> array("-moz-text-shadow", "-webkit-text-shadow", "-khtml-text-shadow"),
+		"white-space"					=> array(array("CssMin", "_tWhiteSpacePreWrap"))
+		);
+	/**
+	 * Minifies the Css.
+	 * 
+	 * @param string $css
+	 * @param array $config [optional]
+	 * @return string
+	 */
+	public static function minify($css, $config = array())
+		{
+		$tokens = self::parse($css);
+		$config = array_merge(array
+			(
+			"remove-empty-blocks"			=> true,
+			"remove-empty-rulesets"			=> true,
+			"remove-last-semicolons"		=> true,
+			"convert-css3-properties"		=> false,
+			"convert-color-values"			=> false,
+			"compress-color-values"			=> false,
+			"compress-unit-values"			=> false,
+			"emulate-css3-variables"		=> true,
+			), $config);
+		// Minification options
+ 		$sRemoveEmptyBlocks			= $config["remove-empty-blocks"]; 
+ 		$sRemoveEmptyRulesets		= $config["remove-empty-rulesets"];
+ 		$sRemoveLastSemicolon		= $config["remove-last-semicolons"];
+ 		$sConvertCss3Properties 	= $config["convert-css3-properties"];
+		$sCompressUnitValues		= $config["compress-unit-values"];
+		$sConvertColorValues		= $config["convert-color-values"];
+		$sCompressColorValues		= $config["compress-color-values"];
+		$sEmulateCcss3Variables		= $config["emulate-css3-variables"];
+		$sRemoveTokens				= array(self::T_COMMENT);
+		// Remove tokens
+		if (!$sEmulateCcss3Variables)
+			{
+			$sRemoveTokens = array_merge($sRemoveTokens, array(self::T_AT_VARIABLES_START, self::T_VARIABLE_DECLARATION, self::T_AT_VARIABLES_END));
+			}
+		for($i = 0, $l = count($tokens); $i < $l; $i++)
+			{
+			if (in_array($tokens[$i][0], $sRemoveTokens))
+				{
+				unset($tokens[$i]);
+				}
+			}
+		$tokens = array_values($tokens);
+		// Remove empty rulesets
+		if ($sRemoveEmptyRulesets)
+			{
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				// Remove empty rulesets
+				if ($tokens[$i][0] == self::T_RULESET_START && $tokens[$i+4][0] == self::T_RULESET_END)
+					{
+					unset($tokens[$i]); 	// T_RULESET_START
+					unset($tokens[++$i]);	// T_SELECTORS
+					unset($tokens[++$i]);	// T_DECLARATIONS_START
+					unset($tokens[++$i]);	// T_DECLARATIONS_END
+					unset($tokens[++$i]);	// T_RULESET_END
+					}
+				}
+			$tokens = array_values($tokens);
+			}
+		// Remove empty @media, @font-face or @page blocks
+		if ($sRemoveEmptyBlocks)
+			{
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				// Remove empty @media, @font-face or @page blocks
+				if (($tokens[$i][0] == self::T_AT_MEDIA_START && $tokens[$i+1][0] == self::T_AT_MEDIA_END)
+					|| ($tokens[$i][0] == self::T_AT_FONT_FACE_START && $tokens[$i+1][0] == self::T_AT_FONT_FACE_END)
+					|| ($tokens[$i][0] == self::T_AT_PAGE_START && $tokens[$i+1][0] == self::T_AT_PAGE_END))
+					{
+					unset($tokens[$i]);		// T_AT_MEDIA_START, T_AT_FONT_FACE_START, T_AT_PAGE_START
+					unset($tokens[++$i]);	// T_AT_MEDIA_END, T_AT_FONT_FACE_END, T_AT_PAGE_END
+					}
+				}
+			$tokens = array_values($tokens);
+			}
+		// CSS Level 3 variables: parse variables
+		if ($sEmulateCcss3Variables)
+			{
+			// Parse variables
+			$variables = array();
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				if ($tokens[$i][0] == self::T_VARIABLE_DECLARATION)
+					{
+					for($i2 = 0, $l2 = count($tokens[$i][3]); $i2 < $l2; $i2++)
+						{
+						if (!isset($variables[$tokens[$i][3][$i2]]))
+							{
+							$variables[$tokens[$i][3][$i2]] = array();
+							}
+						$variables[$tokens[$i][3][$i2]][$tokens[$i][1]] = $tokens[$i][2];
+						}
+					}
+				}
+			}
+		// Conversion and compression 
+		for($i = 0, $l = count($tokens); $i < $l; $i++)
+			{
+			if ($tokens[$i][0] == self::T_DECLARATION)
+				{
+				// CSS Level 3 variables
+				if ($sEmulateCcss3Variables)
+					{
+					if (substr($tokens[$i][2], 0, 4) == "var(" && substr($tokens[$i][2], -1, 1) == ")")
+						{
+						$tokens[$i][3][] = "all";
+						$variable = trim(substr($tokens[$i][2], 4, -1));
+						for($i2 = 0, $l2 = count($tokens[$i][3]); $i2 < $l2; $i2++)
+							{
+							if (isset($variables[$tokens[$i][3][$i2]][$variable]))
+								{
+								$tokens[$i][2] = $variables[$tokens[$i][3][$i2]][$variable];
+								break;
+								}
+							}
+						}
+					}
+				// Compress unit values
+				if ($sCompressUnitValues)
+					{
+					// Compress "0.5px" to ".5px"
+					$tokens[$i][2] = preg_replace("/(^| |-)0\.([0-9]+)(%|em|ex|px|in|cm|mm|pt|pc)/iS", "\${1}.\${2}\${3}", $tokens[$i][2]);
+					// Compress "0px" to "0"
+					$tokens[$i][2] = preg_replace("/(^| )-?(\.?)0(%|em|ex|px|in|cm|mm|pt|pc)/iS", "\${1}0", $tokens[$i][2]);
+					// Compress "0 0 0 0" to "0"
+					if ($tokens[$i][2] == "0 0 0 0") {$tokens[$i][2] = "0";}
+					}
+				// Convert RGB color values to hex ("rgb(200,60%,5)" => "#c89905")
+				if ($sConvertColorValues && preg_match("/rgb\s*\(\s*([0-9%]+)\s*,\s*([0-9%]+)\s*,\s*([0-9%]+)\s*\)/iS", $tokens[$i][2], $m))
+					{
+					for ($i2 = 1, $l2 = count($m); $i2 < $l2; $i2++)
+						{
+						if (strpos("%", $m[$i2]) !== false)
+							{
+							$m[$i2] = substr($m[$i2], 0, -1);
+							$m[$i2] = (int) (256 * ($m[$i2] / 100));
+							}
+						$m[$i2] = str_pad(dechex($m[$i2]),  2, "0", STR_PAD_LEFT);
+						}
+					$tokens[$i][2] = str_replace($m[0], "#" . $m[1] . $m[2] . $m[3], $tokens[$i][2]);
+					}
+				// Compress color values ("#aabbcc" to "#abc") 
+				if ($sCompressColorValues && preg_match("/\#([0-9a-f]{6})/iS", $tokens[$i][2], $m))
+					{
+					$m[1] = strtolower($m[1]);
+					if (substr($m[1], 0, 1) == substr($m[1], 1, 1) && substr($m[1], 2, 1) == substr($m[1], 3, 1) && substr($m[1], 4, 1) == substr($m[1], 5, 1))
+						{
+						$tokens[$i][2] = str_replace($m[0], "#" . substr($m[1], 0, 1) . substr($m[1], 2, 1) . substr($m[1], 4, 1), $tokens[$i][2]);
+						}
+					}
+				}
+			}
+		// Create minified css
+		$r = "";
+		for($i = 0, $l = count($tokens); $i < $l; $i++)
+			{
+			// T_AT_RULE
+			if ($tokens[$i][0] == self::T_AT_RULE)
+				{
+				$r .= "@" . $tokens[$i][1] . " " . $tokens[$i][2] . ";";
+				}
+			// T_AT_MEDIA_START
+			elseif ($tokens[$i][0] == self::T_AT_MEDIA_START)
+				{
+				if (count($tokens[$i][1]) == 1 && $tokens[$i][1][0] == "all")
+					{
+					$r .= "@media{";
+					}
+				else
+					{
+					$r .= "@media " . implode(",", $tokens[$i][1]) . "{";
+					}
+				}
+			// T_AT_FONT_FACE_START
+			elseif ($tokens[$i][0] == self::T_AT_FONT_FACE_START)
+				{
+				$r .= "@font-face{";
+				}
+			// T_FONT_FACE_DECLARATION
+			elseif ($tokens[$i][0] == self::T_FONT_FACE_DECLARATION)
+				{
+				$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_AT_FONT_FACE_END ? "" : ";");
+				}
+			// T_AT_PAGE_START
+			elseif ($tokens[$i][0] == self::T_AT_PAGE_START)
+				{
+				$r .= "@page{";
+				}
+			// T_PAGE_DECLARATION
+			elseif ($tokens[$i][0] == self::T_PAGE_DECLARATION)
+				{
+				$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_AT_PAGE_END ? "" : ";");
+				}
+			// T_SELECTORS
+			elseif ($tokens[$i][0] == self::T_SELECTORS)
+				{
+				$r .= implode(",", $tokens[$i][1]);
+				}
+			// Start of declarations
+			elseif ($tokens[$i][0] == self::T_DECLARATIONS_START)
+				{
+				$r .=  "{";
+				}
+			// T_DECLARATION
+			elseif ($tokens[$i][0] == self::T_DECLARATION)
+				{
+				if ($sConvertCss3Properties && isset(self::$transformations[$tokens[$i][1]]))
+					{
+					foreach (self::$transformations[$tokens[$i][1]] as $value)
+						{
+						if (!is_array($value))
+							{
+							$r .= $value . ":" . $tokens[$i][2] . ";";
+							}
+						elseif (is_array($value) && is_callable($value))
+							{
+							$r.= call_user_func_array($value, array($tokens[$i][1], $tokens[$i][2]));
+							
+							}
+						}
+					}
+				$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_DECLARATIONS_END ? "" : ";");
+				}
+			// T_DECLARATIONS_END, T_AT_MEDIA_END, T_AT_FONT_FACE_END, T_AT_PAGE_END
+			elseif (in_array($tokens[$i][0], array(self::T_DECLARATIONS_END, self::T_AT_MEDIA_END, self::T_AT_FONT_FACE_END, self::T_AT_PAGE_END)))
+				{
+				$r .= "}";
+				}
+			else
+				{
+				// Tokens with no output:
+				// T_COMMENT
+				// T_RULESET_START
+				// T_RULESET_END
+				// T_AT_VARIABLES_START
+				// T_VARIABLE_DECLARATION
+				// T_AT_VARIABLES_END
+				}
+			}
+		return $r;
+		}
+	/**
+	 * Parses the Css and returns a array of tokens.
+	 * 
+	 * @param string $css
+	 * @return array
+	 */
+	public static function parse($css)
+		{
+		// Settings
+		$sDefaultScope		= array("all");						// Default scope
+		$sDefaultTrim		= " \t\n\r\0\x0B";					// Default trim charlist
+		$sTokenChars		= "@{}();:\n\"'/*,";				// Tokens triggering parser processing
+		// Basic variables
+		$c					= null;								// Current char
+		$p					= null;								// Previous char
+		$buffer 			= "";								// Buffer
+		$state				= array(self::T_DOCUMENT);			// State stack
+		$currentState		= self::T_DOCUMENT;					// Current state
+		$scope				= $sDefaultScope;					// Current scope
+		$stringChar			= null;								// String delimiter char
+		$isFilterWs			= true;								// Filter double whitespaces?
+		$selectors			= array();							// Array with collected selectors
+		$r 					= array();							// Return value
+		// Prepare css
+		$css				= str_replace("\r\n", "\n", $css);	// Windows to Unix line endings
+		$css				= str_replace("\r", "\n", $css);	// Mac to Unix line endings
+		while (strpos($css, "\n\n") !== false)
+			{
+			$css			= str_replace("\n\n", "\n", $css);	// Remove double line endings
+			}
+		$css				= str_replace("\t", " ", $css);		// Convert tabs to spaces
+		// Parse css 
+		for ($i = 0, $l = strlen($css); $i < $l; $i++)
+			{
+			$c = substr($css, $i, 1);
+			// Filter out double spaces
+			if ($isFilterWs && $c == " " && $c == $p)
+				{
+				continue;
+				}
+			$buffer .= $c;
+			if (strpos($sTokenChars, $c) !== false)
+				{
+				// 
+				$currentState	= $state[count($state) - 1];
+				/*
+				 * Start of comment
+				 */
+				if ($p == "/" && $c == "*" && $currentState != self::T_STRING && $currentState != self::T_COMMENT)
+					{
+					$saveBuffer = substr($buffer, 0, -2); // save the buffer (will get restored with comment ending)
+					$buffer 	= $c;
+					$isFilterWs	= false;
+					array_push($state, self::T_COMMENT);
+					}
+				/*
+				 * End of comment
+				 */
+				elseif ($p == "*" && $c == "/" && $currentState == self::T_COMMENT)
+					{
+					$r[]		= array(self::T_COMMENT, trim($buffer));
+					$buffer		= $saveBuffer;
+					$isFilterWs	= true;
+					array_pop($state);
+					}
+				/*
+				 * Start of string
+				 */
+				elseif (($c == "\"" || $c == "'") && $currentState != self::T_STRING && $currentState != self::T_COMMENT && $currentState != self::T_STRING_URL)
+					{
+					$stringChar	= $c;
+					$isFilterWs	= false;
+					array_push($state, self::T_STRING);
+					}
+				/**
+				 * Escaped LF in string => remove escape backslash and LF
+				 */
+				elseif ($c == "\n" && $p == "\\" && $currentState == self::T_STRING)
+					{
+					$buffer = substr($buffer, 0, -2);
+					}
+				/*
+				 * End of string
+				 */
+				elseif ($c === $stringChar && $currentState == self::T_STRING)
+					{
+					if ($p == "\\") // Previous char is a escape char
+						{
+						$count = 1; 
+						$i2 = $i -2;
+						while (substr($css, $i2, 1) == "\\")
+							{
+							$count++;
+							$i2--;
+							}
+						// if count of escape chars is uneven => continue with string...
+						if ($count % 2)
+							{
+							continue;
+							}
+						}
+					// ...else end the string
+					$isFilterWs	= true;
+					array_pop($state);
+					$stringChar = null;
+					}
+				/**
+				 * Start of url string property
+				 */
+				elseif ($c == "(" && ($currentState != self::T_COMMENT && $currentState != self::T_STRING) && strtolower(substr($css, $i - 3, 3) == "url") 
+					&& ($currentState == self::T_DECLARATION || $currentState == self::T_FONT_FACE_DECLARATION || $currentState == self::T_PAGE_DECLARATION || $currentState == self::T_VARIABLE_DECLARATION))
+					{
+					array_push($state, self::T_STRING_URL);
+					}
+				/**
+				 * End of url string property
+				 */
+				elseif (($c == ")" || $c == "\n") && ($currentState != self::T_COMMENT && $currentState != self::T_STRING) && $currentState == self::T_STRING_URL)
+					{
+					if ($p == "\\")
+						{
+						continue;
+						}
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @media block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 6)) == "@media")
+					{
+					$i			= $i + 6;
+					$buffer 	= "";
+					array_push($state, self::T_AT_MEDIA_START);
+					}
+				/*
+				 * At-rule @media block media types
+				 */
+				elseif ($c == "{" && $currentState == self::T_AT_MEDIA_START)
+					{
+					$buffer 	= strtolower(trim($buffer, $sDefaultTrim . "{"));
+					$scope		= $buffer != "" ? array_filter(array_map("trim", explode(",", $buffer))) : $sDefaultScope;
+					$r[]		= array(self::T_AT_MEDIA_START, $scope);
+					$i			= $i++;
+					$buffer		= "";
+					array_pop($state);
+					array_push($state, self::T_AT_MEDIA);
+					}
+				/*
+				 * End of at-rule @media block
+				 */
+				elseif ($currentState == self::T_AT_MEDIA && $c == "}")
+					{
+					$r[]		= array(self::T_AT_MEDIA_END);
+					$scope		= $sDefaultScope;
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @font-face block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 10)) == "@font-face")
+					{
+					$r[]		= array(self::T_AT_FONT_FACE_START);
+					$i			= $i + 10;
+					$buffer 	= "";
+					array_push($state, self::T_AT_FONT_FACE);
+					}
+				/*
+				 * @font-face declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_AT_FONT_FACE)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":{");
+					$buffer		= "";
+					array_push($state, self::T_FONT_FACE_DECLARATION);
+					}
+				/*
+				 * @font-face declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}" || $c == "\n") && $currentState == self::T_FONT_FACE_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_FONT_FACE_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // @font-face declaration closed with a right curly brace => closes @font-face block
+						{
+						array_pop($state);
+						$r[]	= array(self::T_AT_FONT_FACE_END);
+						}
+					}
+				/*
+				 * End of at-rule @font-face block
+				 */
+				elseif ($c == "}" && $currentState == self::T_AT_FONT_FACE)
+					{
+					$r[]		= array(self::T_AT_FONT_FACE_END);
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @page block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 5)) == "@page")
+					{
+					$r[]		= array(self::T_AT_PAGE_START);
+					$i			= $i + 5;
+					$buffer 	= "";
+					array_push($state, self::T_AT_PAGE);
+					}
+				/*
+				 * @page declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_AT_PAGE)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":{");
+					$buffer		= "";
+					array_push($state, self::T_PAGE_DECLARATION);
+					}
+				/*
+				 * @page declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}" || $c == "\n") && $currentState == self::T_PAGE_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_PAGE_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // @page declaration closed with a right curly brace => closes @font-face block
+						{
+						array_pop($state);
+						$r[]	= array(self::T_AT_PAGE_END);
+						}
+					}
+				/*
+				 * End of at-rule @page block
+				 */
+				elseif ($c == "}" && $currentState == self::T_AT_PAGE)
+					{
+					$r[]		= array(self::T_AT_PAGE_END);
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @variables block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT &&  strtolower(substr($css, $i, 10)) == "@variables")
+					{
+					$i			= $i + 10;
+					$buffer 	= "";
+					array_push($state, self::T_AT_VARIABLES_START);
+					}
+				/*
+				 * @variables media types
+				 */
+				elseif ($c == "{" && $currentState == self::T_AT_VARIABLES_START)
+					{
+					$buffer 	= strtolower(trim($buffer, $sDefaultTrim . "{"));
+					$r[]		= array(self::T_AT_VARIABLES_START, $scope);
+					$scope		= $buffer != "" ? array_filter(array_map("trim", explode(",", $buffer))) : $sDefaultScope;
+					$i			= $i++;
+					$buffer		= "";
+					array_pop($state);
+					array_push($state, self::T_AT_VARIABLES);
+					}
+				/*
+				 * @variables declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_AT_VARIABLES)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":");
+					$buffer		= "";
+					array_push($state, self::T_VARIABLE_DECLARATION);
+					}
+				/*
+				 * @variables declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}" || $c == "\n") && $currentState == self::T_VARIABLE_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_VARIABLE_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // @variable declaration closed with a right curly brace => closes @variables block
+						{
+						array_pop($state);
+						$r[]	= array(self::T_AT_VARIABLES_END);
+						$scope	= $sDefaultScope;
+						}
+					}
+				/*
+				 * End of at-rule @variables block
+				 */
+				elseif ($c == "}" && $currentState == self::T_AT_VARIABLES)
+					{
+					$r[]		= array(self::T_AT_VARIABLES_END);
+					$scope		= $sDefaultScope;
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of document level at-rule
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT)
+					{
+					$buffer		= "";
+					array_push($state, self::T_AT_RULE);
+					}
+				/*
+				 * End of document level at-rule
+				 */
+				elseif ($c == ";" && $currentState == self::T_AT_RULE)
+					{
+					$pos		= strpos($buffer, " ");
+					$rule		= substr($buffer, 0, $pos);
+					$value		= trim(substr($buffer, $pos), $sDefaultTrim . ";");
+					$r[]		= array(self::T_AT_RULE, $rule, $value);
+					$buffer		= "";
+					array_pop($state);
+					}
+				/**
+				 * Selector
+				 */
+				elseif ($c == "," && ($currentState == self::T_AT_MEDIA || $currentState ==  self::T_DOCUMENT))
+					{
+					$selectors[]= trim($buffer, $sDefaultTrim . ",");
+					$buffer		= "";
+					}
+				/*
+				 * Start of ruleset
+				 */
+				elseif ($c == "{" && ($currentState == self::T_AT_MEDIA || $currentState == self::T_DOCUMENT))
+					{
+					$selectors[]= trim($buffer, $sDefaultTrim . "{");
+					$selectors 	= array_filter(array_map("trim", $selectors));
+					$r[]		= array(self::T_RULESET_START);
+					$r[]		= array(self::T_SELECTORS, $selectors);
+					$r[]		= array(self::T_DECLARATIONS_START);
+					$buffer		= "";
+					$selectors	= array();
+					array_push($state, self::T_DECLARATIONS);
+					}
+				/*
+				 * Declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_DECLARATIONS)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":;");
+					$buffer		= "";
+					array_push($state, self::T_DECLARATION);
+					}
+				/*
+				 * Declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}" || $c == "\n") && $currentState == self::T_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // declaration closed with a right curly brace => close ruleset
+						{
+						array_pop($state);
+						$r[]	= array(self::T_DECLARATIONS_END);
+						$r[]	= array(self::T_RULESET_END);
+						}
+					}
+				/*
+				 * End of ruleset
+				 */
+				elseif ($c == "}" && $currentState == self::T_DECLARATIONS)
+					{
+					$r[]		= array(self::T_DECLARATIONS_END);
+					$r[]		= array(self::T_RULESET_END);
+					$buffer		= "";
+					array_pop($state);
+					}
+				
+				}
+			
+			$p = $c;
+			}
+		return $r;
+		}
+	/**
+	 * Transforms "opacity: {value}" into browser specific counterparts.
+	 * 
+	 * @param string $property
+	 * @param string $value
+	 * @return string
+	 */
+	private static function _tOpacity($property, $value)
+		{
+		$ieValue = (int) ((float) $value * 100);
+		$r  = "-moz-opacity:" . $value . ";";						// Firefox < 3.5
+		$r .= "-ms-filter: \"alpha(opacity=" . $ieValue . ")\";";	// Internet Explorer 8
+		$r .= "filter: alpha(opacity=" . $ieValue . ");zoom: 1;";	// Internet Explorer 4 - 7
+		return $r;
+		}
+	/**
+	 * Transforms "white-space: pre-wrap" into browser specific counterparts.
+	 * 
+	 * @param string $property
+	 * @param string $value
+	 * @return string
+	 */
+	private static function _tWhiteSpacePreWrap($property, $value)
+		{
+		if (strtolower($value) == "pre-wrap")
+			{
+			$r  = "white-space:-moz-pre-wrap;";		// Mozilla
+			$r .= "white-space:-webkit-pre-wrap;";	// Webkit
+			$r .= "white-space:-khtml-pre-wrap;";	// khtml
+			$r .= "white-space:-pre-wrap;";			// Opera 4 - 6
+			$r .= "white-space:-o-pre-wrap;";		// Opera 7+
+			$r .= "word-wrap:break-word;";			// Internet Explorer 5.5+
+			return $r;
+			}
+		else
+			{
+			return "";
+			}
+		}
+	}
+?>
\ No newline at end of file