/application/third_party/dompdf/lib/php-css-parser/lib/Sabberworm/CSS/Parsing/ParserState.php
PHP | 310 lines | 272 code | 31 blank | 7 comment | 55 complexity | 2b4c47613a0d2cbc83c5eda62435ec3a MD5 | raw file
- <?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);
- }
- }
- }