MDL-65759 library: Update php-css-parser to 8.3.0

2019-06-20 08:16:13 +08:00
parent 5dae8c0515
commit 376eb15617
20 changed files with 1059 additions and 738 deletions
@@ -0,0 +1,310 @@
+<?php
+namespace Sabberworm\CSS\Parsing;
+
+use Sabberworm\CSS\Comment\Comment;
+use Sabberworm\CSS\Parsing\UnexpectedTokenException;
+use Sabberworm\CSS\Settings;
+
+class ParserState {
+	private $oParserSettings;
+
+	private $sText;
+
+	private $aText;
+	private $iCurrentPosition;
+	private $sCharset;
+	private $iLength;
+	private $iLineNo;
+
+	public function __construct($sText, Settings $oParserSettings, $iLineNo = 1) {
+		$this->oParserSettings = $oParserSettings;
+		$this->sText = $sText;
+		$this->iCurrentPosition = 0;
+		$this->iLineNo = $iLineNo;
+		$this->setCharset($this->oParserSettings->sDefaultCharset);
+	}
+
+	public function setCharset($sCharset) {
+		$this->sCharset = $sCharset;
+		$this->aText = $this->strsplit($this->sText);
+		$this->iLength = count($this->aText);
+	}
+
+	public function getCharset() {
+		$this->oParserHelper->getCharset();
+		return $this->sCharset;
+	}
+
+	public function currentLine() {
+		return $this->iLineNo;
+	}
+
+	public function getSettings() {
+		return $this->oParserSettings;
+	}
+
+	public function parseIdentifier($bIgnoreCase = true) {
+		$sResult = $this->parseCharacter(true);
+		if ($sResult === null) {
+			throw new UnexpectedTokenException($sResult, $this->peek(5), 'identifier', $this->iLineNo);
+		}
+		$sCharacter = null;
+		while (($sCharacter = $this->parseCharacter(true)) !== null) {
+			$sResult .= $sCharacter;
+		}
+		if ($bIgnoreCase) {
+			$sResult = $this->strtolower($sResult);
+		}
+		return $sResult;
+	}
+
+	public function parseCharacter($bIsForIdentifier) {
+		if ($this->peek() === '\\') {
+			if ($bIsForIdentifier && $this->oParserSettings->bLenientParsing && ($this->comes('\0') || $this->comes('\9'))) {
+				// Non-strings can contain \0 or \9 which is an IE hack supported in lenient parsing.
+				return null;
+			}
+			$this->consume('\\');
+			if ($this->comes('\n') || $this->comes('\r')) {
+				return '';
+			}
+			if (preg_match('/[0-9a-fA-F]/Su', $this->peek()) === 0) {
+				return $this->consume(1);
+			}
+			$sUnicode = $this->consumeExpression('/^[0-9a-fA-F]{1,6}/u', 6);
+			if ($this->strlen($sUnicode) < 6) {
+				//Consume whitespace after incomplete unicode escape
+				if (preg_match('/\\s/isSu', $this->peek())) {
+					if ($this->comes('\r\n')) {
+						$this->consume(2);
+					} else {
+						$this->consume(1);
+					}
+				}
+			}
+			$iUnicode = intval($sUnicode, 16);
+			$sUtf32 = "";
+			for ($i = 0; $i < 4; ++$i) {
+				$sUtf32 .= chr($iUnicode & 0xff);
+				$iUnicode = $iUnicode >> 8;
+			}
+			return iconv('utf-32le', $this->sCharset, $sUtf32);
+		}
+		if ($bIsForIdentifier) {
+			$peek = ord($this->peek());
+			// Ranges: a-z A-Z 0-9 - _
+			if (($peek >= 97 && $peek <= 122) ||
+				($peek >= 65 && $peek <= 90) ||
+				($peek >= 48 && $peek <= 57) ||
+				($peek === 45) ||
+				($peek === 95) ||
+				($peek > 0xa1)) {
+				return $this->consume(1);
+			}
+		} else {
+			return $this->consume(1);
+		}
+		return null;
+	}
+
+	public function consumeWhiteSpace() {
+		$comments = array();
+		do {
+			while (preg_match('/\\s/isSu', $this->peek()) === 1) {
+				$this->consume(1);
+			}
+			if($this->oParserSettings->bLenientParsing) {
+				try {
+					$oComment = $this->consumeComment();
+				} catch(UnexpectedTokenException $e) {
+					// When we can’t find the end of a comment, we assume the document is finished.
+					$this->iCurrentPosition = $this->iLength;
+					return;
+				}
+			} else {
+				$oComment = $this->consumeComment();
+			}
+			if ($oComment !== false) {
+				$comments[] = $oComment;
+			}
+		} while($oComment !== false);
+		return $comments;
+	}
+
+	public function comes($sString, $bCaseInsensitive = false) {
+		$sPeek = $this->peek(strlen($sString));
+		return ($sPeek == '')
+			? false
+			: $this->streql($sPeek, $sString, $bCaseInsensitive);
+	}
+
+	public function peek($iLength = 1, $iOffset = 0) {
+		$iOffset += $this->iCurrentPosition;
+		if ($iOffset >= $this->iLength) {
+			return '';
+		}
+		return $this->substr($iOffset, $iLength);
+	}
+
+	public function consume($mValue = 1) {
+		if (is_string($mValue)) {
+			$iLineCount = substr_count($mValue, "\n");
+			$iLength = $this->strlen($mValue);
+			if (!$this->streql($this->substr($this->iCurrentPosition, $iLength), $mValue)) {
+				throw new UnexpectedTokenException($mValue, $this->peek(max($iLength, 5)), $this->iLineNo);
+			}
+			$this->iLineNo += $iLineCount;
+			$this->iCurrentPosition += $this->strlen($mValue);
+			return $mValue;
+		} else {
+			if ($this->iCurrentPosition + $mValue > $this->iLength) {
+				throw new UnexpectedTokenException($mValue, $this->peek(5), 'count', $this->iLineNo);
+			}
+			$sResult = $this->substr($this->iCurrentPosition, $mValue);
+			$iLineCount = substr_count($sResult, "\n");
+			$this->iLineNo += $iLineCount;
+			$this->iCurrentPosition += $mValue;
+			return $sResult;
+		}
+	}
+
+	public function consumeExpression($mExpression, $iMaxLength = null) {
+		$aMatches = null;
+		$sInput = $iMaxLength !== null ? $this->peek($iMaxLength) : $this->inputLeft();
+		if (preg_match($mExpression, $sInput, $aMatches, PREG_OFFSET_CAPTURE) === 1) {
+			return $this->consume($aMatches[0][0]);
+		}
+		throw new UnexpectedTokenException($mExpression, $this->peek(5), 'expression', $this->iLineNo);
+	}
+
+	/**
+	 * @return false|Comment
+	 */
+	public function consumeComment() {
+		$mComment = false;
+		if ($this->comes('/*')) {
+			$iLineNo = $this->iLineNo;
+			$this->consume(1);
+			$mComment = '';
+			while (($char = $this->consume(1)) !== '') {
+				$mComment .= $char;
+				if ($this->comes('*/')) {
+					$this->consume(2);
+					break;
+				}
+			}
+		}
+
+		if ($mComment !== false) {
+			// We skip the * which was included in the comment.
+			return new Comment(substr($mComment, 1), $iLineNo);
+		}
+
+		return $mComment;
+	}
+
+	public function isEnd() {
+		return $this->iCurrentPosition >= $this->iLength;
+	}
+
+	public function consumeUntil($aEnd, $bIncludeEnd = false, $consumeEnd = false, array &$comments = array()) {
+		$aEnd = is_array($aEnd) ? $aEnd : array($aEnd);
+		$out = '';
+		$start = $this->iCurrentPosition;
+
+		while (($char = $this->consume(1)) !== '') {
+			if (in_array($char, $aEnd)) {
+				if ($bIncludeEnd) {
+					$out .= $char;
+				} elseif (!$consumeEnd) {
+					$this->iCurrentPosition -= $this->strlen($char);
+				}
+				return $out;
+			}
+			$out .= $char;
+			if ($comment = $this->consumeComment()) {
+				$comments[] = $comment;
+			}
+		}
+
+		$this->iCurrentPosition = $start;
+		throw new UnexpectedTokenException('One of ("'.implode('","', $aEnd).'")', $this->peek(5), 'search', $this->iLineNo);
+	}
+
+	private function inputLeft() {
+		return $this->substr($this->iCurrentPosition, -1);
+	}
+
+	public function streql($sString1, $sString2, $bCaseInsensitive = true) {
+		if($bCaseInsensitive) {
+			return $this->strtolower($sString1) === $this->strtolower($sString2);
+		} else {
+			return $sString1 === $sString2;
+		}
+	}
+
+	public function backtrack($iAmount) {
+		$this->iCurrentPosition -= $iAmount;
+	}
+
+	public function strlen($sString) {
+		if ($this->oParserSettings->bMultibyteSupport) {
+			return mb_strlen($sString, $this->sCharset);
+		} else {
+			return strlen($sString);
+		}	
+	}	
+
+	private function substr($iStart, $iLength) {
+		if ($iLength < 0) {
+			$iLength = $this->iLength - $iStart + $iLength;
+		}	
+		if ($iStart + $iLength > $this->iLength) {
+			$iLength = $this->iLength - $iStart;
+		}	
+		$sResult = '';
+		while ($iLength > 0) {
+			$sResult .= $this->aText[$iStart];
+			$iStart++;
+			$iLength--;
+		}	
+		return $sResult;
+	}
+
+	private function strtolower($sString) {
+		if ($this->oParserSettings->bMultibyteSupport) {
+			return mb_strtolower($sString, $this->sCharset);
+		} else {
+			return strtolower($sString);
+		}
+	}
+
+	private function strsplit($sString) {
+		if ($this->oParserSettings->bMultibyteSupport) {
+			if ($this->streql($this->sCharset, 'utf-8')) {
+				return preg_split('//u', $sString, null, PREG_SPLIT_NO_EMPTY);
+			} else {
+				$iLength = mb_strlen($sString, $this->sCharset);
+				$aResult = array();
+				for ($i = 0; $i < $iLength; ++$i) {
+					$aResult[] = mb_substr($sString, $i, 1, $this->sCharset);
+				}
+				return $aResult;
+			}
+		} else {
+			if($sString === '') {
+				return array();
+			} else {
+				return str_split($sString);
+			}
+		}
+	}
+
+	private function strpos($sString, $sNeedle, $iOffset) {
+		if ($this->oParserSettings->bMultibyteSupport) {
+			return mb_strpos($sString, $sNeedle, $iOffset, $this->sCharset);
+		} else {
+			return strpos($sString, $sNeedle, $iOffset);
+		}
+	}
+}