| 1 |
<?php |
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|
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namespace Sabberworm\CSS\CSSList; |
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|
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use Sabberworm\CSS\Comment\Comment; |
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use Sabberworm\CSS\Comment\Commentable; |
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use Sabberworm\CSS\OutputFormat; |
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use Sabberworm\CSS\Parsing\ParserState; |
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use Sabberworm\CSS\Parsing\SourceException; |
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use Sabberworm\CSS\Parsing\UnexpectedEOFException; |
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use Sabberworm\CSS\Parsing\UnexpectedTokenException; |
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use Sabberworm\CSS\Property\AtRule; |
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use Sabberworm\CSS\Property\Charset; |
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use Sabberworm\CSS\Property\CSSNamespace; |
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use Sabberworm\CSS\Property\Import; |
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use Sabberworm\CSS\Property\Selector; |
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use Sabberworm\CSS\Renderable; |
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use Sabberworm\CSS\RuleSet\AtRuleSet; |
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use Sabberworm\CSS\RuleSet\DeclarationBlock; |
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use Sabberworm\CSS\RuleSet\RuleSet; |
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use Sabberworm\CSS\Settings; |
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use Sabberworm\CSS\Value\CSSString; |
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use Sabberworm\CSS\Value\URL; |
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use Sabberworm\CSS\Value\Value; |
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|
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/** |
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* A `CSSList` is the most generic container available. Its contents include `RuleSet` as well as other `CSSList` |
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* objects. |
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* |
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* Also, it may contain `Import` and `Charset` objects stemming from at-rules. |
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*/ |
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abstract class CSSList implements Renderable, Commentable |
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{ |
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/** |
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* @var array<array-key, Comment> |
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*/ |
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protected $aComments; |
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|
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/** |
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* @var array<int, RuleSet|CSSList|Import|Charset> |
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*/ |
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protected $aContents; |
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|
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/** |
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* @var int |
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*/ |
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protected $iLineNo; |
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|
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/** |
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* @param int $iLineNo |
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*/ |
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public function __construct($iLineNo = 0) |
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{ |
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$this->aComments = []; |
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$this->aContents = []; |
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$this->iLineNo = $iLineNo; |
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} |
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|
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/** |
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* @return void |
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* |
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* @throws UnexpectedTokenException |
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* @throws SourceException |
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*/ |
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public static function parseList(ParserState $oParserState, CSSList $oList) |
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{ |
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$bIsRoot = $oList instanceof Document; |
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if (is_string($oParserState)) { |
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$oParserState = new ParserState($oParserState, Settings::create()); |
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} |
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$bLenientParsing = $oParserState->getSettings()->bLenientParsing; |
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while (!$oParserState->isEnd()) { |
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$comments = $oParserState->consumeWhiteSpace(); |
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$oListItem = null; |
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if ($bLenientParsing) { |
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try { |
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$oListItem = self::parseListItem($oParserState, $oList); |
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} catch (UnexpectedTokenException $e) { |
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$oListItem = false; |
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} |
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} else { |
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$oListItem = self::parseListItem($oParserState, $oList); |
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} |
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if ($oListItem === null) { |
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// List parsing finished |
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return; |
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} |
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if ($oListItem) { |
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$oListItem->setComments($comments); |
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$oList->append($oListItem); |
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} |
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$oParserState->consumeWhiteSpace(); |
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} |
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if (!$bIsRoot && !$bLenientParsing) { |
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throw new SourceException("Unexpected end of document", $oParserState->currentLine()); |
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} |
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} |
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|
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/** |
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* @return AtRuleBlockList|KeyFrame|Charset|CSSNamespace|Import|AtRuleSet|DeclarationBlock|null|false |
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* |
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* @throws SourceException |
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* @throws UnexpectedEOFException |
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* @throws UnexpectedTokenException |
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*/ |
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private static function parseListItem(ParserState $oParserState, CSSList $oList) |
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{ |
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$bIsRoot = $oList instanceof Document; |
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if ($oParserState->comes('@')) { |
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$oAtRule = self::parseAtRule($oParserState); |
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if ($oAtRule instanceof Charset) { |
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if (!$bIsRoot) { |
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throw new UnexpectedTokenException( |
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'@charset may only occur in root document', |
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'', |
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'custom', |
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$oParserState->currentLine() |
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); |
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} |
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if (count($oList->getContents()) > 0) { |
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throw new UnexpectedTokenException( |
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'@charset must be the first parseable token in a document', |
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'', |
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'custom', |
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$oParserState->currentLine() |
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); |
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} |
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$oParserState->setCharset($oAtRule->getCharset()->getString()); |
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} |
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return $oAtRule; |
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} elseif ($oParserState->comes('}')) { |
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if (!$oParserState->getSettings()->bLenientParsing) { |
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throw new UnexpectedTokenException('CSS selector', '}', 'identifier', $oParserState->currentLine()); |
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} else { |
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if ($bIsRoot) { |
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if ($oParserState->getSettings()->bLenientParsing) { |
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return DeclarationBlock::parse($oParserState); |
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} else { |
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throw new SourceException("Unopened {", $oParserState->currentLine()); |
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} |
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} else { |
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return null; |
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} |
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} |
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} else { |
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return DeclarationBlock::parse($oParserState, $oList); |
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} |
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} |
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|
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/** |
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* @param ParserState $oParserState |
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* |
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* @return AtRuleBlockList|KeyFrame|Charset|CSSNamespace|Import|AtRuleSet|null |
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* |
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* @throws SourceException |
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* @throws UnexpectedTokenException |
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* @throws UnexpectedEOFException |
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*/ |
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private static function parseAtRule(ParserState $oParserState) |
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{ |
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$oParserState->consume('@'); |
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$sIdentifier = $oParserState->parseIdentifier(); |
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$iIdentifierLineNum = $oParserState->currentLine(); |
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$oParserState->consumeWhiteSpace(); |
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if ($sIdentifier === 'import') { |
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$oLocation = URL::parse($oParserState); |
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$oParserState->consumeWhiteSpace(); |
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$sMediaQuery = null; |
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if (!$oParserState->comes(';')) { |
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$sMediaQuery = trim($oParserState->consumeUntil([';', ParserState::EOF])); |
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} |
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$oParserState->consumeUntil([';', ParserState::EOF], true, true); |
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return new Import($oLocation, $sMediaQuery ?: null, $iIdentifierLineNum); |
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} elseif ($sIdentifier === 'charset') { |
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$sCharset = CSSString::parse($oParserState); |
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$oParserState->consumeWhiteSpace(); |
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$oParserState->consumeUntil([';', ParserState::EOF], true, true); |
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return new Charset($sCharset, $iIdentifierLineNum); |
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} elseif (self::identifierIs($sIdentifier, 'keyframes')) { |
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$oResult = new KeyFrame($iIdentifierLineNum); |
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$oResult->setVendorKeyFrame($sIdentifier); |
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$oResult->setAnimationName(trim($oParserState->consumeUntil('{', false, true))); |
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CSSList::parseList($oParserState, $oResult); |
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if ($oParserState->comes('}')) { |
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$oParserState->consume('}'); |
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} |
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return $oResult; |
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} elseif ($sIdentifier === 'namespace') { |
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$sPrefix = null; |
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$mUrl = Value::parsePrimitiveValue($oParserState); |
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if (!$oParserState->comes(';')) { |
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$sPrefix = $mUrl; |
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$mUrl = Value::parsePrimitiveValue($oParserState); |
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} |
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$oParserState->consumeUntil([';', ParserState::EOF], true, true); |
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if ($sPrefix !== null && !is_string($sPrefix)) { |
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throw new UnexpectedTokenException('Wrong namespace prefix', $sPrefix, 'custom', $iIdentifierLineNum); |
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} |
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if (!($mUrl instanceof CSSString || $mUrl instanceof URL)) { |
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throw new UnexpectedTokenException( |
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'Wrong namespace url of invalid type', |
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$mUrl, |
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'custom', |
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$iIdentifierLineNum |
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); |
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} |
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return new CSSNamespace($mUrl, $sPrefix, $iIdentifierLineNum); |
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} else { |
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// Unknown other at rule (font-face or such) |
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$sArgs = trim($oParserState->consumeUntil('{', false, true)); |
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if (substr_count($sArgs, "(") != substr_count($sArgs, ")")) { |
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if ($oParserState->getSettings()->bLenientParsing) { |
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return null; |
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} else { |
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throw new SourceException("Unmatched brace count in media query", $oParserState->currentLine()); |
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} |
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} |
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$bUseRuleSet = true; |
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foreach (explode('/', AtRule::BLOCK_RULES) as $sBlockRuleName) { |
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if (self::identifierIs($sIdentifier, $sBlockRuleName)) { |
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$bUseRuleSet = false; |
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break; |
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} |
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} |
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if ($bUseRuleSet) { |
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$oAtRule = new AtRuleSet($sIdentifier, $sArgs, $iIdentifierLineNum); |
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RuleSet::parseRuleSet($oParserState, $oAtRule); |
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} else { |
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$oAtRule = new AtRuleBlockList($sIdentifier, $sArgs, $iIdentifierLineNum); |
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CSSList::parseList($oParserState, $oAtRule); |
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if ($oParserState->comes('}')) { |
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$oParserState->consume('}'); |
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} |
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} |
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return $oAtRule; |
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} |
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} |
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|
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/** |
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* Tests an identifier for a given value. Since identifiers are all keywords, they can be vendor-prefixed. |
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* We need to check for these versions too. |
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* |
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* @param string $sIdentifier |
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* @param string $sMatch |
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* |
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* @return bool |
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*/ |
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private static function identifierIs($sIdentifier, $sMatch) |
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{ |
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return (strcasecmp($sIdentifier, $sMatch) === 0) |
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?: preg_match("/^(-\\w+-)?$sMatch$/i", $sIdentifier) === 1; |
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} |
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|
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/** |
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* @return int |
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*/ |
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public function getLineNo() |
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{ |
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return $this->iLineNo; |
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} |
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|
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/** |
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* Prepends an item to the list of contents. |
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* |
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* @param RuleSet|CSSList|Import|Charset $oItem |
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* |
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* @return void |
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*/ |
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public function prepend($oItem) |
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{ |
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array_unshift($this->aContents, $oItem); |
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} |
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|
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/** |
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* Appends an item to tje list of contents. |
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* |
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* @param RuleSet|CSSList|Import|Charset $oItem |
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* |
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* @return void |
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*/ |
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public function append($oItem) |
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{ |
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$this->aContents[] = $oItem; |
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} |
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|
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/** |
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* Splices the list of contents. |
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* |
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* @param int $iOffset |
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* @param int $iLength |
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* @param array<int, RuleSet|CSSList|Import|Charset> $mReplacement |
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* |
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* @return void |
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*/ |
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public function splice($iOffset, $iLength = null, $mReplacement = null) |
| 296 |
{ |
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array_splice($this->aContents, $iOffset, $iLength, $mReplacement); |
| 298 |
} |
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|
| 300 |
/** |
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* Removes an item from the CSS list. |
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* |
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* @param RuleSet|Import|Charset|CSSList $oItemToRemove |
| 304 |
* May be a RuleSet (most likely a DeclarationBlock), a Import, |
| 305 |
* a Charset or another CSSList (most likely a MediaQuery) |
| 306 |
* |
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* @return bool whether the item was removed |
| 308 |
*/ |
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public function remove($oItemToRemove) |
| 310 |
{ |
| 311 |
$iKey = array_search($oItemToRemove, $this->aContents, true); |
| 312 |
if ($iKey !== false) { |
| 313 |
unset($this->aContents[$iKey]); |
| 314 |
return true; |
| 315 |
} |
| 316 |
return false; |
| 317 |
} |
| 318 |
|
| 319 |
/** |
| 320 |
* Replaces an item from the CSS list. |
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* |
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* @param RuleSet|Import|Charset|CSSList $oOldItem |
| 323 |
* May be a `RuleSet` (most likely a `DeclarationBlock`), an `Import`, a `Charset` |
| 324 |
* or another `CSSList` (most likely a `MediaQuery`) |
| 325 |
* |
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* @return bool |
| 327 |
*/ |
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public function replace($oOldItem, $mNewItem) |
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{ |
| 330 |
$iKey = array_search($oOldItem, $this->aContents, true); |
| 331 |
if ($iKey !== false) { |
| 332 |
if (is_array($mNewItem)) { |
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array_splice($this->aContents, $iKey, 1, $mNewItem); |
| 334 |
} else { |
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array_splice($this->aContents, $iKey, 1, [$mNewItem]); |
| 336 |
} |
| 337 |
return true; |
| 338 |
} |
| 339 |
return false; |
| 340 |
} |
| 341 |
|
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/** |
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* @param array<int, RuleSet|Import|Charset|CSSList> $aContents |
| 344 |
*/ |
| 345 |
public function setContents(array $aContents) |
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{ |
| 347 |
$this->aContents = []; |
| 348 |
foreach ($aContents as $content) { |
| 349 |
$this->append($content); |
| 350 |
} |
| 351 |
} |
| 352 |
|
| 353 |
/** |
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* Removes a declaration block from the CSS list if it matches all given selectors. |
| 355 |
* |
| 356 |
* @param DeclarationBlock|array<array-key, Selector>|string $mSelector the selectors to match |
| 357 |
* @param bool $bRemoveAll whether to stop at the first declaration block found or remove all blocks |
| 358 |
* |
| 359 |
* @return void |
| 360 |
*/ |
| 361 |
public function removeDeclarationBlockBySelector($mSelector, $bRemoveAll = false) |
| 362 |
{ |
| 363 |
if ($mSelector instanceof DeclarationBlock) { |
| 364 |
$mSelector = $mSelector->getSelectors(); |
| 365 |
} |
| 366 |
if (!is_array($mSelector)) { |
| 367 |
$mSelector = explode(',', $mSelector); |
| 368 |
} |
| 369 |
foreach ($mSelector as $iKey => &$mSel) { |
| 370 |
if (!($mSel instanceof Selector)) { |
| 371 |
if (!Selector::isValid($mSel)) { |
| 372 |
throw new UnexpectedTokenException( |
| 373 |
"Selector did not match '" . Selector::SELECTOR_VALIDATION_RX . "'.", |
| 374 |
$mSel, |
| 375 |
"custom" |
| 376 |
); |
| 377 |
} |
| 378 |
$mSel = new Selector($mSel); |
| 379 |
} |
| 380 |
} |
| 381 |
foreach ($this->aContents as $iKey => $mItem) { |
| 382 |
if (!($mItem instanceof DeclarationBlock)) { |
| 383 |
continue; |
| 384 |
} |
| 385 |
if ($mItem->getSelectors() == $mSelector) { |
| 386 |
unset($this->aContents[$iKey]); |
| 387 |
if (!$bRemoveAll) { |
| 388 |
return; |
| 389 |
} |
| 390 |
} |
| 391 |
} |
| 392 |
} |
| 393 |
|
| 394 |
/** |
| 395 |
* @return string |
| 396 |
*/ |
| 397 |
public function __toString() |
| 398 |
{ |
| 399 |
return $this->render(new OutputFormat()); |
| 400 |
} |
| 401 |
|
| 402 |
/** |
| 403 |
* @return string |
| 404 |
*/ |
| 405 |
public function render(OutputFormat $oOutputFormat) |
| 406 |
{ |
| 407 |
$sResult = ''; |
| 408 |
$bIsFirst = true; |
| 409 |
$oNextLevel = $oOutputFormat; |
| 410 |
if (!$this->isRootList()) { |
| 411 |
$oNextLevel = $oOutputFormat->nextLevel(); |
| 412 |
} |
| 413 |
foreach ($this->aContents as $oContent) { |
| 414 |
$sRendered = $oOutputFormat->safely(function () use ($oNextLevel, $oContent) { |
| 415 |
return $oContent->render($oNextLevel); |
| 416 |
}); |
| 417 |
if ($sRendered === null) { |
| 418 |
continue; |
| 419 |
} |
| 420 |
if ($bIsFirst) { |
| 421 |
$bIsFirst = false; |
| 422 |
$sResult .= $oNextLevel->spaceBeforeBlocks(); |
| 423 |
} else { |
| 424 |
$sResult .= $oNextLevel->spaceBetweenBlocks(); |
| 425 |
} |
| 426 |
$sResult .= $sRendered; |
| 427 |
} |
| 428 |
|
| 429 |
if (!$bIsFirst) { |
| 430 |
// Had some output |
| 431 |
$sResult .= $oOutputFormat->spaceAfterBlocks(); |
| 432 |
} |
| 433 |
|
| 434 |
return $sResult; |
| 435 |
} |
| 436 |
|
| 437 |
/** |
| 438 |
* Return true if the list can not be further outdented. Only important when rendering. |
| 439 |
* |
| 440 |
* @return bool |
| 441 |
*/ |
| 442 |
abstract public function isRootList(); |
| 443 |
|
| 444 |
/** |
| 445 |
* @return array<int, RuleSet|Import|Charset|CSSList> |
| 446 |
*/ |
| 447 |
public function getContents() |
| 448 |
{ |
| 449 |
return $this->aContents; |
| 450 |
} |
| 451 |
|
| 452 |
/** |
| 453 |
* @param array<array-key, Comment> $aComments |
| 454 |
* |
| 455 |
* @return void |
| 456 |
*/ |
| 457 |
public function addComments(array $aComments) |
| 458 |
{ |
| 459 |
$this->aComments = array_merge($this->aComments, $aComments); |
| 460 |
} |
| 461 |
|
| 462 |
/** |
| 463 |
* @return array<array-key, Comment> |
| 464 |
*/ |
| 465 |
public function getComments() |
| 466 |
{ |
| 467 |
return $this->aComments; |
| 468 |
} |
| 469 |
|
| 470 |
/** |
| 471 |
* @param array<array-key, Comment> $aComments |
| 472 |
* |
| 473 |
* @return void |
| 474 |
*/ |
| 475 |
public function setComments(array $aComments) |
| 476 |
{ |
| 477 |
$this->aComments = $aComments; |
| 478 |
} |
| 479 |
} |
| 480 |
|
