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Direktori : /home2/selectio/www/a1tex.in/vendor/sabberworm/php-css-parser/src/Parsing/ |
Current File : /home2/selectio/www/a1tex.in/vendor/sabberworm/php-css-parser/src/Parsing/ParserState.php |
<?php namespace Sabberworm\CSS\Parsing; use Sabberworm\CSS\Comment\Comment; use Sabberworm\CSS\Settings; class ParserState { /** * @var null */ const EOF = null; /** * @var Settings */ private $oParserSettings; /** * @var string */ private $sText; /** * @var array<int, string> */ private $aText; /** * @var int */ private $iCurrentPosition; /** * @var string */ private $sCharset; /** * @var int */ private $iLength; /** * @var int */ private $iLineNo; /** * @param string $sText * @param int $iLineNo */ public function __construct($sText, Settings $oParserSettings, $iLineNo = 1) { $this->oParserSettings = $oParserSettings; $this->sText = $sText; $this->iCurrentPosition = 0; $this->iLineNo = $iLineNo; $this->setCharset($this->oParserSettings->sDefaultCharset); } /** * @param string $sCharset * * @return void */ public function setCharset($sCharset) { $this->sCharset = $sCharset; $this->aText = $this->strsplit($this->sText); if (is_array($this->aText)) { $this->iLength = count($this->aText); } } /** * @return string */ public function getCharset() { return $this->sCharset; } /** * @return int */ public function currentLine() { return $this->iLineNo; } /** * @return int */ public function currentColumn() { return $this->iCurrentPosition; } /** * @return Settings */ public function getSettings() { return $this->oParserSettings; } /** * @param bool $bIgnoreCase * * @return string * * @throws UnexpectedTokenException */ public function parseIdentifier($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) { if (preg_match('/[a-zA-Z0-9\x{00A0}-\x{FFFF}_-]/Sux', $sCharacter)) { $sResult .= $sCharacter; } else { $sResult .= '\\' . $sCharacter; } } if ($bIgnoreCase) { $sResult = $this->strtolower($sResult); } return $sResult; } /** * @param bool $bIsForIdentifier * * @return string|null * * @throws UnexpectedEOFException * @throws UnexpectedTokenException */ public function parseCharacter($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; } /** * @return array<int, Comment>|void * * @throws UnexpectedEOFException * @throws UnexpectedTokenException */ public function consumeWhiteSpace() { $comments = []; do { while (preg_match('/\\s/isSu', $this->peek()) === 1) { $this->consume(1); } if ($this->oParserSettings->bLenientParsing) { try { $oComment = $this->consumeComment(); } catch (UnexpectedEOFException $e) { $this->iCurrentPosition = $this->iLength; return; } } else { $oComment = $this->consumeComment(); } if ($oComment !== false) { $comments[] = $oComment; } } while ($oComment !== false); return $comments; } /** * @param string $sString * @param bool $bCaseInsensitive * * @return bool */ public function comes($sString, $bCaseInsensitive = false) { $sPeek = $this->peek(strlen($sString)); return ($sPeek == '') ? false : $this->streql($sPeek, $sString, $bCaseInsensitive); } /** * @param int $iLength * @param int $iOffset * * @return string */ public function peek($iLength = 1, $iOffset = 0) { $iOffset += $this->iCurrentPosition; if ($iOffset >= $this->iLength) { return ''; } return $this->substr($iOffset, $iLength); } /** * @param int $mValue * * @return string * * @throws UnexpectedEOFException * @throws UnexpectedTokenException */ public function consume($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 > $this->iLength) { throw new UnexpectedEOFException($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; } } /** * @param string $mExpression * @param int|null $iMaxLength * * @return string * * @throws UnexpectedEOFException * @throws UnexpectedTokenException */ public function consumeExpression($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 Comment|false */ 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; } /** * @return bool */ public function isEnd() { return $this->iCurrentPosition >= $this->iLength; } /** * @param array<array-key, string>|string $aEnd * @param string $bIncludeEnd * @param string $consumeEnd * @param array<int, Comment> $comments * * @return string * * @throws UnexpectedEOFException * @throws UnexpectedTokenException */ public function consumeUntil($aEnd, $bIncludeEnd = false, $consumeEnd = false, array &$comments = []) { $aEnd = is_array($aEnd) ? $aEnd : [$aEnd]; $out = ''; $start = $this->iCurrentPosition; while (!$this->isEnd()) { $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; } } if (in_array(self::EOF, $aEnd)) { return $out; } $this->iCurrentPosition = $start; throw new UnexpectedEOFException( 'One of ("' . implode('","', $aEnd) . '")', $this->peek(5), 'search', $this->iLineNo ); } /** * @return string */ private function inputLeft() { return $this->substr($this->iCurrentPosition, -1); } /** * @param string $sString1 * @param string $sString2 * @param bool $bCaseInsensitive * * @return bool */ public function streql($sString1, $sString2, $bCaseInsensitive = true) { if ($bCaseInsensitive) { return $this->strtolower($sString1) === $this->strtolower($sString2); } else { return $sString1 === $sString2; } } /** * @param int $iAmount * * @return void */ public function backtrack($iAmount) { $this->iCurrentPosition -= $iAmount; } /** * @param string $sString * * @return int */ public function strlen($sString) { if ($this->oParserSettings->bMultibyteSupport) { return mb_strlen($sString, $this->sCharset); } else { return strlen($sString); } } /** * @param int $iStart * @param int $iLength * * @return string */ private function substr($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; } /** * @param string $sString * * @return string */ private function strtolower($sString) { if ($this->oParserSettings->bMultibyteSupport) { return mb_strtolower($sString, $this->sCharset); } else { return strtolower($sString); } } /** * @param string $sString * * @return array<int, string> */ private function strsplit($sString) { if ($this->oParserSettings->bMultibyteSupport) { if ($this->streql($this->sCharset, 'utf-8')) { return preg_split('//u', $sString, -1, PREG_SPLIT_NO_EMPTY); } else { $iLength = mb_strlen($sString, $this->sCharset); $aResult = []; for ($i = 0; $i < $iLength; ++$i) { $aResult[] = mb_substr($sString, $i, 1, $this->sCharset); } return $aResult; } } else { if ($sString === '') { return []; } else { return str_split($sString); } } } /** * @param string $sString * @param string $sNeedle * @param int $iOffset * * @return int|false */ private function strpos($sString, $sNeedle, $iOffset) { if ($this->oParserSettings->bMultibyteSupport) { return mb_strpos($sString, $sNeedle, $iOffset, $this->sCharset); } else { return strpos($sString, $sNeedle, $iOffset); } } }