MDL-55224 core: Import PHP-CSS-Parser into core

Part of MDL-55071
2016-09-23 10:49:49 +01:00
parent e86eb6b80d
commit fbe18cc022
34 changed files with 3307 additions and 0 deletions
@@ -0,0 +1,82 @@
+<?php
+
+namespace Sabberworm\CSS\CSSList;
+
+use Sabberworm\CSS\RuleSet\DeclarationBlock;
+use Sabberworm\CSS\RuleSet\RuleSet;
+use Sabberworm\CSS\Property\Selector;
+use Sabberworm\CSS\Rule\Rule;
+use Sabberworm\CSS\Value\ValueList;
+use Sabberworm\CSS\Value\CSSFunction;
+
+/**
+ * A CSSBlockList is a CSSList whose DeclarationBlocks are guaranteed to contain valid declaration blocks or at-rules.
+ * Most CSSLists conform to this category but some at-rules (such as @keyframes) do not.
+ */
+abstract class CSSBlockList extends CSSList {
+	public function __construct($iLineNo = 0) {
+		parent::__construct($iLineNo);
+	}
+
+	protected function allDeclarationBlocks(&$aResult) {
+		foreach ($this->aContents as $mContent) {
+			if ($mContent instanceof DeclarationBlock) {
+				$aResult[] = $mContent;
+			} else if ($mContent instanceof CSSBlockList) {
+				$mContent->allDeclarationBlocks($aResult);
+			}
+		}
+	}
+
+	protected function allRuleSets(&$aResult) {
+		foreach ($this->aContents as $mContent) {
+			if ($mContent instanceof RuleSet) {
+				$aResult[] = $mContent;
+			} else if ($mContent instanceof CSSBlockList) {
+				$mContent->allRuleSets($aResult);
+			}
+		}
+	}
+
+	protected function allValues($oElement, &$aResult, $sSearchString = null, $bSearchInFunctionArguments = false) {
+		if ($oElement instanceof CSSBlockList) {
+			foreach ($oElement->getContents() as $oContent) {
+				$this->allValues($oContent, $aResult, $sSearchString, $bSearchInFunctionArguments);
+			}
+		} else if ($oElement instanceof RuleSet) {
+			foreach ($oElement->getRules($sSearchString) as $oRule) {
+				$this->allValues($oRule, $aResult, $sSearchString, $bSearchInFunctionArguments);
+			}
+		} else if ($oElement instanceof Rule) {
+			$this->allValues($oElement->getValue(), $aResult, $sSearchString, $bSearchInFunctionArguments);
+		} else if ($oElement instanceof ValueList) {
+			if ($bSearchInFunctionArguments || !($oElement instanceof CSSFunction)) {
+				foreach ($oElement->getListComponents() as $mComponent) {
+					$this->allValues($mComponent, $aResult, $sSearchString, $bSearchInFunctionArguments);
+				}
+			}
+		} else {
+			//Non-List Value or CSSString (CSS identifier)
+			$aResult[] = $oElement;
+		}
+	}
+
+	protected function allSelectors(&$aResult, $sSpecificitySearch = null) {
+		$aDeclarationBlocks = array();
+		$this->allDeclarationBlocks($aDeclarationBlocks);
+		foreach ($aDeclarationBlocks as $oBlock) {
+			foreach ($oBlock->getSelectors() as $oSelector) {
+				if ($sSpecificitySearch === null) {
+					$aResult[] = $oSelector;
+				} else {
+					$sComparison = "\$bRes = {$oSelector->getSpecificity()} $sSpecificitySearch;";
+					eval($sComparison);
+					if ($bRes) {
+						$aResult[] = $oSelector;
+					}
+				}
+			}
+		}
+	}
+
+}