Parsing of filter rules specific to Microsoft

Author: Frederic Massart

lib/Sabberworm/CSS/Parser.php

@@ -19,6 +19,7 @@
 use Sabberworm\CSS\Value\Color;
 use Sabberworm\CSS\Value\URL;
 use Sabberworm\CSS\Value\CSSString;
+use Sabberworm\CSS\Value\Statement;
 use Sabberworm\CSS\Rule\Rule;
 use Sabberworm\CSS\Parsing\UnexpectedTokenException;
 use Sabberworm\CSS\Comment\Comment;
@@ -436,6 +437,8 @@ private function parsePrimitiveValue() {
 			$oValue = $this->parseURLValue();
 		} else if ($this->comes("'") || $this->comes('"')) {
 			$oValue = $this->parseStringValue();
+		} else if ($this->comes("progid:")) {
+			$oValue = $this->parseMicrosoftFilter();
 		} else {
 			$oValue = $this->parseIdentifier(true, false);
 		}
@@ -496,6 +499,11 @@ private function parseColorValue() {
 		return new Color($aColor, $this->iLineNo);
 	}
 
+	private function parseMicrosoftFilter() {
+		$sStatement = $this->consumeUntil(')', true, true);
+		return new Statement($sStatement, $this->iLineNo);
+	}
+
 	private function parseURLValue() {
 		$bUseUrl = $this->comes('url', true);
 		if ($bUseUrl) {

lib/Sabberworm/CSS/Value/Statement.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Sabberworm\CSS\Value;
+
+
+class Statement extends PrimitiveValue {
+
+	private $sStatement;
+
+	public function __construct($sStatement = '', $iLineNo = 0) {
+		parent::__construct($iLineNo);
+		$this->sStatement = $sStatement;
+	}
+
+	public function setStatement($sStatement) {
+		$this->sStatement = $sStatement;
+	}
+
+	public function getStatement() {
+		return $this->sStatement;
+	}
+
+	public function __toString() {
+		return $this->render(new \Sabberworm\CSS\OutputFormat());
+	}
+
+	public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
+		return $this->sStatement;
+	}
+
+}

tests/Sabberworm/CSS/ParserTest.php

@@ -582,4 +582,10 @@ function testTopLevelCommentExtracting() {
 		$this->assertCount(1, $comments);
 		$this->assertEquals("Find Me!", $comments[0]->getComment());
 	}
+
+	function testMicrosoftFilterParsing() {
+		$oDoc = $this->parsedStructureForFile('ms-filter');
+		$sExpected = ".test {filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000', endColorstr='#00000000', GradientType=1);}";
+		$this->assertSame($sExpected, $oDoc->render());
+	}
 }

tests/files/ms-filter.css

@@ -0,0 +1 @@
+.test {filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000', endColorstr='#00000000', GradientType=1);}