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<?php |
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|
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WindPressDeps\Symfony\Component\Yaml; |
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|
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use WindPressDeps\Symfony\Component\Yaml\Exception\ParseException; |
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use WindPressDeps\Symfony\Component\Yaml\Tag\TaggedValue; |
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/** |
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* Parser parses YAML strings to convert them to PHP arrays. |
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* |
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* @author Fabien Potencier <fabien@symfony.com> |
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* |
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* @final |
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*/ |
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class Parser |
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{ |
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public const TAG_PATTERN = '(?P<tag>![\w!.\/:-]+)'; |
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public const BLOCK_SCALAR_HEADER_PATTERN = '(?P<separator>\||>)(?P<modifiers>\+|\-|\d+|\+\d+|\-\d+|\d+\+|\d+\-)?(?P<comments> +#.*)?'; |
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public const REFERENCE_PATTERN = '#^&(?P<ref>[^ ]++) *+(?P<value>.*)#u'; |
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public const DEFAULT_MAX_NESTING_LEVEL = 128; |
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public const DEFAULT_MAX_ALIASES_FOR_COLLECTIONS = 128; |
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private $filename; |
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private $offset = 0; |
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private $numberOfParsedLines = 0; |
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private $totalNumberOfLines; |
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private $lines = []; |
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private $currentLineNb = -1; |
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private $currentLine = ''; |
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private $refs = []; |
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private $skippedLineNumbers = []; |
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private $locallySkippedLineNumbers = []; |
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private $refsBeingParsed = []; |
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private $state; |
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public function __construct(int $maxNestingLevel = self::DEFAULT_MAX_NESTING_LEVEL, int $maxAliasesForCollections = self::DEFAULT_MAX_ALIASES_FOR_COLLECTIONS) |
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{ |
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if ($maxNestingLevel < 1) { |
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throw new \InvalidArgumentException('The maximum nesting depth must be greater than 0.'); |
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} |
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if ($maxAliasesForCollections < 0) { |
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throw new \InvalidArgumentException('The maximum number of collection aliases must be greater than or equal to 0.'); |
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} |
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$this->getState()->maxNestingLevel = $maxNestingLevel; |
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$this->getState()->maxAliasesForCollections = $maxAliasesForCollections; |
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} |
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/** |
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* Parses a YAML file into a PHP value. |
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* |
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* @param string $filename The path to the YAML file to be parsed |
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* @param int $flags A bit field of Yaml::PARSE_* constants to customize the YAML parser behavior |
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* |
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* @return mixed |
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* |
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* @throws ParseException If the file could not be read or the YAML is not valid |
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*/ |
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public function parseFile(string $filename, int $flags = 0) |
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{ |
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if (!is_file($filename)) { |
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throw new ParseException(sprintf('File "%s" does not exist.', $filename)); |
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} |
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if (!is_readable($filename)) { |
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throw new ParseException(sprintf('File "%s" cannot be read.', $filename)); |
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} |
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$this->filename = $filename; |
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try { |
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return $this->parse(file_get_contents($filename), $flags); |
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} finally { |
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$this->filename = null; |
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} |
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} |
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/** |
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* Parses a YAML string to a PHP value. |
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* |
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* @param string $value A YAML string |
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* @param int $flags A bit field of Yaml::PARSE_* constants to customize the YAML parser behavior |
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* |
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* @return mixed |
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* |
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* @throws ParseException If the YAML is not valid |
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*/ |
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public function parse(string $value, int $flags = 0) |
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{ |
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if (\false === preg_match('//u', $value)) { |
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throw new ParseException('The YAML value does not appear to be valid UTF-8.', -1, null, $this->filename); |
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} |
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$this->refs = []; |
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$state = $this->getState(); |
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$state->reset(); |
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$state->aliasesEnabled = 0 === (Yaml::PARSE_EXCEPTION_ON_ALIAS & $flags); |
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$mbEncoding = null; |
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if (2 & (int) \ini_get('mbstring.func_overload')) { |
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$mbEncoding = mb_internal_encoding(); |
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mb_internal_encoding('UTF-8'); |
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} |
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try { |
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$data = $this->doParse($value, $flags); |
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} finally { |
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if (null !== $mbEncoding) { |
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mb_internal_encoding($mbEncoding); |
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} |
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$this->refsBeingParsed = []; |
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$this->offset = 0; |
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$this->lines = []; |
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$this->currentLine = ''; |
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$this->numberOfParsedLines = 0; |
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$this->refs = []; |
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$this->skippedLineNumbers = []; |
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$this->locallySkippedLineNumbers = []; |
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$this->totalNumberOfLines = null; |
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$state->reset(); |
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} |
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return $data; |
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} |
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private function getState(): ParserState |
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{ |
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return $this->state ?? $this->state = new ParserState(); |
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} |
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private function doParse(string $value, int $flags) |
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{ |
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$this->currentLineNb = -1; |
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$this->currentLine = ''; |
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$value = $this->cleanup($value); |
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$this->lines = explode("\n", $value); |
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$this->numberOfParsedLines = \count($this->lines); |
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$this->locallySkippedLineNumbers = []; |
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if (null === $this->totalNumberOfLines) { |
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$this->totalNumberOfLines = $this->numberOfParsedLines; |
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} |
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if (!$this->moveToNextLine()) { |
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return null; |
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} |
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$data = []; |
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$context = null; |
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$allowOverwrite = \false; |
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while ($this->isCurrentLineEmpty()) { |
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if (!$this->moveToNextLine()) { |
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return null; |
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} |
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} |
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// Resolves the tag and returns if end of the document |
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if (null !== ($tag = $this->getLineTag($this->currentLine, $flags, \false)) && !$this->moveToNextLine()) { |
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return new TaggedValue($tag, ''); |
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} |
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do { |
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if ($this->isCurrentLineEmpty()) { |
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continue; |
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} |
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// tab? |
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if ("\t" === $this->currentLine[0]) { |
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throw new ParseException('A YAML file cannot contain tabs as indentation.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
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} |
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Inline::initialize($flags, $this->getRealCurrentLineNb(), $this->filename); |
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$isRef = $mergeNode = \false; |
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if ('-' === $this->currentLine[0] && self::preg_match('#^\-((?P<leadspaces>\s+)(?P<value>.+))?$#u', rtrim($this->currentLine), $values)) { |
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if ($context && 'mapping' == $context) { |
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throw new ParseException('You cannot define a sequence item when in a mapping.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
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} |
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$context = 'sequence'; |
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if (isset($values['value']) && '&' === $values['value'][0] && self::preg_match(self::REFERENCE_PATTERN, $values['value'], $matches)) { |
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$isRef = $matches['ref']; |
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$this->refsBeingParsed[] = $isRef; |
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$values['value'] = $matches['value']; |
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} |
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if (isset($values['value'][1]) && '?' === $values['value'][0] && ' ' === $values['value'][1]) { |
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throw new ParseException('Complex mappings are not supported.', $this->getRealCurrentLineNb() + 1, $this->currentLine); |
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} |
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// array |
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if (isset($values['value']) && 0 === strpos(ltrim($values['value'], ' '), '-')) { |
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// Inline first child |
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$currentLineNumber = $this->getRealCurrentLineNb(); |
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$sequenceIndentation = \strlen($values['leadspaces']) + 1; |
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$sequenceYaml = substr($this->currentLine, $sequenceIndentation); |
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$sequenceYaml .= "\n" . $this->getNextEmbedBlock($sequenceIndentation, \true); |
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$data[] = $this->parseBlock($currentLineNumber, rtrim($sequenceYaml), $flags); |
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} elseif (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#')) { |
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$data[] = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(null, \true) ?? '', $flags); |
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} elseif (null !== $subTag = $this->getLineTag(ltrim($values['value'], ' '), $flags)) { |
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$data[] = new TaggedValue($subTag, $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(null, \true), $flags)); |
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} else if (isset($values['leadspaces']) && ('!' === $values['value'][0] || self::preg_match('#^(?P<key>' . Inline::REGEX_QUOTED_STRING . '|[^ \'"\{\[].*?) *\:(\s+(?P<value>.+?))?\s*$#u', $this->trimTag($values['value']), $matches))) { |
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$block = $values['value']; |
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if ($this->isNextLineIndented() || isset($matches['value']) && '>-' === $matches['value']) { |
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$block .= "\n" . $this->getNextEmbedBlock($this->getCurrentLineIndentation() + \strlen($values['leadspaces']) + 1); |
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} |
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$data[] = $this->parseBlock($this->getRealCurrentLineNb(), $block, $flags); |
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} else { |
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$data[] = $this->parseValue($values['value'], $flags, $context); |
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} |
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if ($isRef) { |
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$this->refs[$isRef] = end($data); |
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array_pop($this->refsBeingParsed); |
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} |
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} elseif (self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:' . Inline::REGEX_QUOTED_STRING . '|(?:!?!php/const:)?[^ \'"\[\{!].*?)) *\:(( |\t)++(?P<value>.+))?$#u', rtrim($this->currentLine), $values) && (\false === strpos($values['key'], ' #') || \in_array($values['key'][0], ['"', "'"]))) { |
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if ($context && 'sequence' == $context) { |
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throw new ParseException('You cannot define a mapping item when in a sequence.', $this->currentLineNb + 1, $this->currentLine, $this->filename); |
| 201 |
} |
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$context = 'mapping'; |
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try { |
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$key = Inline::parseScalar($values['key']); |
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} catch (ParseException $e) { |
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$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
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$e->setSnippet($this->currentLine); |
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throw $e; |
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} |
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if (!\is_string($key) && !\is_int($key)) { |
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throw new ParseException((is_numeric($key) ? 'Numeric' : 'Non-string') . ' keys are not supported. Quote your evaluable mapping keys instead.', $this->getRealCurrentLineNb() + 1, $this->currentLine); |
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} |
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// Convert float keys to strings, to avoid being converted to integers by PHP |
| 214 |
if (\is_float($key)) { |
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$key = (string) $key; |
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} |
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if ('<<' === $key && (!isset($values['value']) || '&' !== $values['value'][0] || !self::preg_match('#^&(?P<ref>[^ ]+)#u', $values['value'], $refMatches))) { |
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$mergeNode = \true; |
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$allowOverwrite = \true; |
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if (isset($values['value'][0]) && '*' === $values['value'][0]) { |
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$refName = substr(rtrim($values['value']), 1); |
| 222 |
if (!\array_key_exists($refName, $this->refs)) { |
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if (\false !== $pos = array_search($refName, $this->refsBeingParsed, \true)) { |
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throw new ParseException(sprintf('Circular reference [%s] detected for reference "%s".', implode(', ', array_merge(\array_slice($this->refsBeingParsed, $pos), [$refName])), $refName), $this->currentLineNb + 1, $this->currentLine, $this->filename); |
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} |
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throw new ParseException(sprintf('Reference "%s" does not exist.', $refName), $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 227 |
} |
| 228 |
$refValue = $this->refs[$refName]; |
| 229 |
$this->getState()->countAlias($refValue, $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 230 |
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $refValue instanceof \stdClass) { |
| 231 |
$refValue = (array) $refValue; |
| 232 |
} |
| 233 |
if (!\is_array($refValue)) { |
| 234 |
throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 235 |
} |
| 236 |
$data += $refValue; |
| 237 |
// array union |
| 238 |
} else { |
| 239 |
if (isset($values['value']) && '' !== $values['value']) { |
| 240 |
$value = $values['value']; |
| 241 |
} else { |
| 242 |
$value = $this->getNextEmbedBlock(); |
| 243 |
} |
| 244 |
$parsed = $this->parseBlock($this->getRealCurrentLineNb() + 1, $value, $flags); |
| 245 |
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $parsed instanceof \stdClass) { |
| 246 |
$parsed = (array) $parsed; |
| 247 |
} |
| 248 |
if (!\is_array($parsed)) { |
| 249 |
throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 250 |
} |
| 251 |
if (isset($parsed[0])) { |
| 252 |
// If the value associated with the merge key is a sequence, then this sequence is expected to contain mapping nodes |
| 253 |
// and each of these nodes is merged in turn according to its order in the sequence. Keys in mapping nodes earlier |
| 254 |
// in the sequence override keys specified in later mapping nodes. |
| 255 |
foreach ($parsed as $parsedItem) { |
| 256 |
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $parsedItem instanceof \stdClass) { |
| 257 |
$parsedItem = (array) $parsedItem; |
| 258 |
} |
| 259 |
if (!\is_array($parsedItem)) { |
| 260 |
throw new ParseException('Merge items must be arrays.', $this->getRealCurrentLineNb() + 1, $parsedItem, $this->filename); |
| 261 |
} |
| 262 |
$data += $parsedItem; |
| 263 |
// array union |
| 264 |
} |
| 265 |
} else { |
| 266 |
// If the value associated with the key is a single mapping node, each of its key/value pairs is inserted into the |
| 267 |
// current mapping, unless the key already exists in it. |
| 268 |
$data += $parsed; |
| 269 |
// array union |
| 270 |
} |
| 271 |
} |
| 272 |
} elseif ('<<' !== $key && isset($values['value']) && '&' === $values['value'][0] && self::preg_match(self::REFERENCE_PATTERN, $values['value'], $matches)) { |
| 273 |
$isRef = $matches['ref']; |
| 274 |
$this->refsBeingParsed[] = $isRef; |
| 275 |
$values['value'] = $matches['value']; |
| 276 |
} |
| 277 |
$subTag = null; |
| 278 |
if ($mergeNode) { |
| 279 |
// Merge keys |
| 280 |
} elseif (!isset($values['value']) || '' === $values['value'] || 0 === strpos($values['value'], '#') || null !== ($subTag = $this->getLineTag($values['value'], $flags)) || '<<' === $key) { |
| 281 |
// hash |
| 282 |
// if next line is less indented or equal, then it means that the current value is null |
| 283 |
if (!$this->isNextLineIndented() && !$this->isNextLineUnIndentedCollection()) { |
| 284 |
// Spec: Keys MUST be unique; first one wins. |
| 285 |
// But overwriting is allowed when a merge node is used in current block. |
| 286 |
if ($allowOverwrite || !isset($data[$key])) { |
| 287 |
if (null !== $subTag) { |
| 288 |
$data[$key] = new TaggedValue($subTag, ''); |
| 289 |
} else { |
| 290 |
$data[$key] = null; |
| 291 |
} |
| 292 |
} else { |
| 293 |
throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), $this->getRealCurrentLineNb() + 1, $this->currentLine); |
| 294 |
} |
| 295 |
} else { |
| 296 |
// remember the parsed line number here in case we need it to provide some contexts in error messages below |
| 297 |
$realCurrentLineNbKey = $this->getRealCurrentLineNb(); |
| 298 |
$value = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(), $flags); |
| 299 |
if ('<<' === $key) { |
| 300 |
$this->refs[$refMatches['ref']] = $value; |
| 301 |
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $value instanceof \stdClass) { |
| 302 |
$value = (array) $value; |
| 303 |
} |
| 304 |
$data += $value; |
| 305 |
} elseif ($allowOverwrite || !isset($data[$key])) { |
| 306 |
// Spec: Keys MUST be unique; first one wins. |
| 307 |
// But overwriting is allowed when a merge node is used in current block. |
| 308 |
if (null !== $subTag) { |
| 309 |
$data[$key] = new TaggedValue($subTag, $value); |
| 310 |
} else { |
| 311 |
$data[$key] = $value; |
| 312 |
} |
| 313 |
} else { |
| 314 |
throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), $realCurrentLineNbKey + 1, $this->currentLine); |
| 315 |
} |
| 316 |
} |
| 317 |
} else { |
| 318 |
$value = $this->parseValue(rtrim($values['value']), $flags, $context); |
| 319 |
// Spec: Keys MUST be unique; first one wins. |
| 320 |
// But overwriting is allowed when a merge node is used in current block. |
| 321 |
if ($allowOverwrite || !isset($data[$key])) { |
| 322 |
$data[$key] = $value; |
| 323 |
} else { |
| 324 |
throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), $this->getRealCurrentLineNb() + 1, $this->currentLine); |
| 325 |
} |
| 326 |
} |
| 327 |
if ($isRef) { |
| 328 |
$this->refs[$isRef] = $data[$key]; |
| 329 |
array_pop($this->refsBeingParsed); |
| 330 |
} |
| 331 |
} elseif ('"' === $this->currentLine[0] || "'" === $this->currentLine[0]) { |
| 332 |
if (null !== $context) { |
| 333 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 334 |
} |
| 335 |
try { |
| 336 |
return Inline::parse($this->lexInlineQuotedString(), $flags, $this->refs, $this->state); |
| 337 |
} catch (ParseException $e) { |
| 338 |
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
| 339 |
$e->setSnippet($this->currentLine); |
| 340 |
throw $e; |
| 341 |
} |
| 342 |
} elseif ('{' === $this->currentLine[0]) { |
| 343 |
if (null !== $context) { |
| 344 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 345 |
} |
| 346 |
try { |
| 347 |
$parsedMapping = Inline::parse($this->lexInlineMapping(), $flags, $this->refs, $this->state); |
| 348 |
while ($this->moveToNextLine()) { |
| 349 |
if (!$this->isCurrentLineEmpty()) { |
| 350 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 351 |
} |
| 352 |
} |
| 353 |
return $parsedMapping; |
| 354 |
} catch (ParseException $e) { |
| 355 |
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
| 356 |
$e->setSnippet($this->currentLine); |
| 357 |
throw $e; |
| 358 |
} |
| 359 |
} elseif ('[' === $this->currentLine[0]) { |
| 360 |
if (null !== $context) { |
| 361 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 362 |
} |
| 363 |
try { |
| 364 |
$parsedSequence = Inline::parse($this->lexInlineSequence(), $flags, $this->refs, $this->state); |
| 365 |
while ($this->moveToNextLine()) { |
| 366 |
if (!$this->isCurrentLineEmpty()) { |
| 367 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 368 |
} |
| 369 |
} |
| 370 |
return $parsedSequence; |
| 371 |
} catch (ParseException $e) { |
| 372 |
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
| 373 |
$e->setSnippet($this->currentLine); |
| 374 |
throw $e; |
| 375 |
} |
| 376 |
} else { |
| 377 |
// multiple documents are not supported |
| 378 |
if ('---' === $this->currentLine) { |
| 379 |
throw new ParseException('Multiple documents are not supported.', $this->currentLineNb + 1, $this->currentLine, $this->filename); |
| 380 |
} |
| 381 |
if ($deprecatedUsage = isset($this->currentLine[1]) && '?' === $this->currentLine[0] && ' ' === $this->currentLine[1]) { |
| 382 |
throw new ParseException('Complex mappings are not supported.', $this->getRealCurrentLineNb() + 1, $this->currentLine); |
| 383 |
} |
| 384 |
// 1-liner optionally followed by newline(s) |
| 385 |
if (\is_string($value) && $this->lines[0] === trim($value)) { |
| 386 |
try { |
| 387 |
$value = Inline::parse($this->lines[0], $flags, $this->refs, $this->state); |
| 388 |
} catch (ParseException $e) { |
| 389 |
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
| 390 |
$e->setSnippet($this->currentLine); |
| 391 |
throw $e; |
| 392 |
} |
| 393 |
return $value; |
| 394 |
} |
| 395 |
// try to parse the value as a multi-line string as a last resort |
| 396 |
if (0 === $this->currentLineNb) { |
| 397 |
$previousLineWasNewline = \false; |
| 398 |
$previousLineWasTerminatedWithBackslash = \false; |
| 399 |
$value = ''; |
| 400 |
foreach ($this->lines as $line) { |
| 401 |
$trimmedLine = trim($line); |
| 402 |
if ('#' === ($trimmedLine[0] ?? '')) { |
| 403 |
continue; |
| 404 |
} |
| 405 |
// If the indentation is not consistent at offset 0, it is to be considered as a ParseError |
| 406 |
if (0 === $this->offset && !$deprecatedUsage && isset($line[0]) && ' ' === $line[0]) { |
| 407 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 408 |
} |
| 409 |
if (\false !== strpos($line, ': ')) { |
| 410 |
throw new ParseException('Mapping values are not allowed in multi-line blocks.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 411 |
} |
| 412 |
if ('' === $trimmedLine) { |
| 413 |
$value .= "\n"; |
| 414 |
} elseif (!$previousLineWasNewline && !$previousLineWasTerminatedWithBackslash) { |
| 415 |
$value .= ' '; |
| 416 |
} |
| 417 |
if ('' !== $trimmedLine && '\\' === substr($line, -1)) { |
| 418 |
$value .= ltrim(substr($line, 0, -1)); |
| 419 |
} elseif ('' !== $trimmedLine) { |
| 420 |
$value .= $trimmedLine; |
| 421 |
} |
| 422 |
if ('' === $trimmedLine) { |
| 423 |
$previousLineWasNewline = \true; |
| 424 |
$previousLineWasTerminatedWithBackslash = \false; |
| 425 |
} elseif ('\\' === substr($line, -1)) { |
| 426 |
$previousLineWasNewline = \false; |
| 427 |
$previousLineWasTerminatedWithBackslash = \true; |
| 428 |
} else { |
| 429 |
$previousLineWasNewline = \false; |
| 430 |
$previousLineWasTerminatedWithBackslash = \false; |
| 431 |
} |
| 432 |
} |
| 433 |
try { |
| 434 |
return Inline::parse(trim($value), 0, $this->refs, $this->state); |
| 435 |
} catch (ParseException $e) { |
| 436 |
// fall-through to the ParseException thrown below |
| 437 |
} |
| 438 |
} |
| 439 |
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 440 |
} |
| 441 |
} while ($this->moveToNextLine()); |
| 442 |
if (null !== $tag) { |
| 443 |
$data = new TaggedValue($tag, $data); |
| 444 |
} |
| 445 |
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && 'mapping' === $context && !\is_object($data)) { |
| 446 |
$object = new \stdClass(); |
| 447 |
foreach ($data as $key => $value) { |
| 448 |
$object->{$key} = $value; |
| 449 |
} |
| 450 |
$data = $object; |
| 451 |
} |
| 452 |
return empty($data) ? null : $data; |
| 453 |
} |
| 454 |
private function parseBlock(int $offset, string $yaml, int $flags) |
| 455 |
{ |
| 456 |
$skippedLineNumbers = $this->skippedLineNumbers; |
| 457 |
foreach ($this->locallySkippedLineNumbers as $lineNumber) { |
| 458 |
if ($lineNumber < $offset) { |
| 459 |
continue; |
| 460 |
} |
| 461 |
$skippedLineNumbers[] = $lineNumber; |
| 462 |
} |
| 463 |
$parser = new self(); |
| 464 |
$parser->offset = $offset; |
| 465 |
$parser->totalNumberOfLines = $this->totalNumberOfLines; |
| 466 |
$parser->skippedLineNumbers = $skippedLineNumbers; |
| 467 |
$parser->refs =& $this->refs; |
| 468 |
$parser->refsBeingParsed = $this->refsBeingParsed; |
| 469 |
$parser->state = $this->state; |
| 470 |
$this->getState()->enterNestingLevel($offset + 1, $this->currentLine, $this->filename); |
| 471 |
try { |
| 472 |
return $parser->doParse($yaml, $flags); |
| 473 |
} finally { |
| 474 |
$this->getState()->leaveNestingLevel(); |
| 475 |
} |
| 476 |
} |
| 477 |
/** |
| 478 |
* Returns the current line number (takes the offset into account). |
| 479 |
* |
| 480 |
* @internal |
| 481 |
*/ |
| 482 |
public function getRealCurrentLineNb(): int |
| 483 |
{ |
| 484 |
$realCurrentLineNumber = $this->currentLineNb + $this->offset; |
| 485 |
foreach ($this->skippedLineNumbers as $skippedLineNumber) { |
| 486 |
if ($skippedLineNumber > $realCurrentLineNumber) { |
| 487 |
break; |
| 488 |
} |
| 489 |
++$realCurrentLineNumber; |
| 490 |
} |
| 491 |
return $realCurrentLineNumber; |
| 492 |
} |
| 493 |
/** |
| 494 |
* Returns the current line indentation. |
| 495 |
*/ |
| 496 |
private function getCurrentLineIndentation(): int |
| 497 |
{ |
| 498 |
if (' ' !== ($this->currentLine[0] ?? '')) { |
| 499 |
return 0; |
| 500 |
} |
| 501 |
return \strlen($this->currentLine) - \strlen(ltrim($this->currentLine, ' ')); |
| 502 |
} |
| 503 |
/** |
| 504 |
* Returns the next embed block of YAML. |
| 505 |
* |
| 506 |
* @param int|null $indentation The indent level at which the block is to be read, or null for default |
| 507 |
* @param bool $inSequence True if the enclosing data structure is a sequence |
| 508 |
* |
| 509 |
* @throws ParseException When indentation problem are detected |
| 510 |
*/ |
| 511 |
private function getNextEmbedBlock(?int $indentation = null, bool $inSequence = \false): string |
| 512 |
{ |
| 513 |
$oldLineIndentation = $this->getCurrentLineIndentation(); |
| 514 |
if (!$this->moveToNextLine()) { |
| 515 |
return ''; |
| 516 |
} |
| 517 |
if (null === $indentation) { |
| 518 |
$newIndent = null; |
| 519 |
$movements = 0; |
| 520 |
do { |
| 521 |
$EOF = \false; |
| 522 |
// empty and comment-like lines do not influence the indentation depth |
| 523 |
if ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) { |
| 524 |
$EOF = !$this->moveToNextLine(); |
| 525 |
if (!$EOF) { |
| 526 |
++$movements; |
| 527 |
} |
| 528 |
} else { |
| 529 |
$newIndent = $this->getCurrentLineIndentation(); |
| 530 |
} |
| 531 |
} while (!$EOF && null === $newIndent); |
| 532 |
for ($i = 0; $i < $movements; ++$i) { |
| 533 |
$this->moveToPreviousLine(); |
| 534 |
} |
| 535 |
$unindentedEmbedBlock = $this->isStringUnIndentedCollectionItem(); |
| 536 |
if (!$this->isCurrentLineEmpty() && 0 === $newIndent && !$unindentedEmbedBlock) { |
| 537 |
throw new ParseException('Indentation problem.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 538 |
} |
| 539 |
} else { |
| 540 |
$newIndent = $indentation; |
| 541 |
} |
| 542 |
$data = []; |
| 543 |
if ($this->getCurrentLineIndentation() >= $newIndent) { |
| 544 |
$data[] = substr($this->currentLine, $newIndent ?? 0); |
| 545 |
} elseif ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) { |
| 546 |
$data[] = $this->currentLine; |
| 547 |
} else { |
| 548 |
$this->moveToPreviousLine(); |
| 549 |
return ''; |
| 550 |
} |
| 551 |
if ($inSequence && $oldLineIndentation === $newIndent && isset($data[0][0]) && '-' === $data[0][0]) { |
| 552 |
// the previous line contained a dash but no item content, this line is a sequence item with the same indentation |
| 553 |
// and therefore no nested list or mapping |
| 554 |
$this->moveToPreviousLine(); |
| 555 |
return ''; |
| 556 |
} |
| 557 |
$isItUnindentedCollection = $this->isStringUnIndentedCollectionItem(); |
| 558 |
$isItComment = $this->isCurrentLineComment(); |
| 559 |
while ($this->moveToNextLine()) { |
| 560 |
if ($isItComment && !$isItUnindentedCollection) { |
| 561 |
$isItUnindentedCollection = $this->isStringUnIndentedCollectionItem(); |
| 562 |
$isItComment = $this->isCurrentLineComment(); |
| 563 |
} |
| 564 |
$indent = $this->getCurrentLineIndentation(); |
| 565 |
if ($isItUnindentedCollection && !$this->isCurrentLineEmpty() && !$this->isStringUnIndentedCollectionItem() && $newIndent === $indent) { |
| 566 |
$this->moveToPreviousLine(); |
| 567 |
break; |
| 568 |
} |
| 569 |
if ($this->isCurrentLineBlank()) { |
| 570 |
$data[] = substr($this->currentLine, $newIndent ?? 0); |
| 571 |
continue; |
| 572 |
} |
| 573 |
if ($indent >= $newIndent) { |
| 574 |
$data[] = substr($this->currentLine, $newIndent ?? 0); |
| 575 |
} elseif ($this->isCurrentLineComment()) { |
| 576 |
$data[] = $this->currentLine; |
| 577 |
} elseif (0 == $indent) { |
| 578 |
$this->moveToPreviousLine(); |
| 579 |
break; |
| 580 |
} else { |
| 581 |
throw new ParseException('Indentation problem.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 582 |
} |
| 583 |
} |
| 584 |
return implode("\n", $data); |
| 585 |
} |
| 586 |
private function hasMoreLines(): bool |
| 587 |
{ |
| 588 |
return \count($this->lines) - 1 > $this->currentLineNb; |
| 589 |
} |
| 590 |
/** |
| 591 |
* Moves the parser to the next line. |
| 592 |
*/ |
| 593 |
private function moveToNextLine(): bool |
| 594 |
{ |
| 595 |
if ($this->currentLineNb >= $this->numberOfParsedLines - 1) { |
| 596 |
return \false; |
| 597 |
} |
| 598 |
$this->currentLine = $this->lines[++$this->currentLineNb]; |
| 599 |
return \true; |
| 600 |
} |
| 601 |
/** |
| 602 |
* Moves the parser to the previous line. |
| 603 |
*/ |
| 604 |
private function moveToPreviousLine(): bool |
| 605 |
{ |
| 606 |
if ($this->currentLineNb < 1) { |
| 607 |
return \false; |
| 608 |
} |
| 609 |
$this->currentLine = $this->lines[--$this->currentLineNb]; |
| 610 |
return \true; |
| 611 |
} |
| 612 |
/** |
| 613 |
* Parses a YAML value. |
| 614 |
* |
| 615 |
* @param string $value A YAML value |
| 616 |
* @param int $flags A bit field of Yaml::PARSE_* constants to customize the YAML parser behavior |
| 617 |
* @param string $context The parser context (either sequence or mapping) |
| 618 |
* |
| 619 |
* @return mixed |
| 620 |
* |
| 621 |
* @throws ParseException When reference does not exist |
| 622 |
*/ |
| 623 |
private function parseValue(string $value, int $flags, string $context) |
| 624 |
{ |
| 625 |
if (0 === strpos($value, '*')) { |
| 626 |
if (\false !== $pos = strpos($value, '#')) { |
| 627 |
$value = substr($value, 1, $pos - 2); |
| 628 |
} else { |
| 629 |
$value = substr($value, 1); |
| 630 |
} |
| 631 |
if (!\array_key_exists($value, $this->refs)) { |
| 632 |
if (\false !== $pos = array_search($value, $this->refsBeingParsed, \true)) { |
| 633 |
throw new ParseException(sprintf('Circular reference [%s] detected for reference "%s".', implode(', ', array_merge(\array_slice($this->refsBeingParsed, $pos), [$value])), $value), $this->currentLineNb + 1, $this->currentLine, $this->filename); |
| 634 |
} |
| 635 |
throw new ParseException(sprintf('Reference "%s" does not exist.', $value), $this->currentLineNb + 1, $this->currentLine, $this->filename); |
| 636 |
} |
| 637 |
$this->getState()->countAlias($this->refs[$value], $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
| 638 |
return $this->refs[$value]; |
| 639 |
} |
| 640 |
if (\in_array($value[0], ['!', '|', '>'], \true) && self::preg_match('/^(?:' . self::TAG_PATTERN . ' +)?' . self::BLOCK_SCALAR_HEADER_PATTERN . '$/', $value, $matches)) { |
| 641 |
$modifiers = $matches['modifiers'] ?? ''; |
| 642 |
$data = $this->parseBlockScalar($matches['separator'], preg_replace('#\d+#', '', $modifiers), abs((int) $modifiers)); |
| 643 |
if ('' !== $matches['tag'] && '!' !== $matches['tag']) { |
| 644 |
if ('!!binary' === $matches['tag']) { |
| 645 |
return Inline::evaluateBinaryScalar($data); |
| 646 |
} |
| 647 |
return new TaggedValue(substr($matches['tag'], 1), $data); |
| 648 |
} |
| 649 |
return $data; |
| 650 |
} |
| 651 |
try { |
| 652 |
if ('' !== $value && '{' === $value[0]) { |
| 653 |
$cursor = \strlen(rtrim($this->currentLine)) - \strlen(rtrim($value)); |
| 654 |
return Inline::parse($this->lexInlineMapping($cursor), $flags, $this->refs, $this->state); |
| 655 |
} elseif ('' !== $value && '[' === $value[0]) { |
| 656 |
$cursor = \strlen(rtrim($this->currentLine)) - \strlen(rtrim($value)); |
| 657 |
return Inline::parse($this->lexInlineSequence($cursor), $flags, $this->refs, $this->state); |
| 658 |
} |
| 659 |
switch ($value[0] ?? '') { |
| 660 |
case '"': |
| 661 |
case "'": |
| 662 |
$cursor = \strlen(rtrim($this->currentLine)) - \strlen(rtrim($value)); |
| 663 |
$parsedValue = Inline::parse($this->lexInlineQuotedString($cursor), $flags, $this->refs, $this->state); |
| 664 |
if (isset($this->currentLine[$cursor]) && preg_replace('/\s*(#.*)?$/A', '', substr($this->currentLine, $cursor))) { |
| 665 |
throw new ParseException(sprintf('Unexpected characters near "%s".', substr($this->currentLine, $cursor))); |
| 666 |
} |
| 667 |
return $parsedValue; |
| 668 |
default: |
| 669 |
$lines = []; |
| 670 |
while ($this->moveToNextLine()) { |
| 671 |
// unquoted strings end before the first unindented line |
| 672 |
if (0 === $this->getCurrentLineIndentation()) { |
| 673 |
$this->moveToPreviousLine(); |
| 674 |
break; |
| 675 |
} |
| 676 |
$lines[] = trim($this->currentLine); |
| 677 |
} |
| 678 |
for ($i = 0, $linesCount = \count($lines), $previousLineBlank = \false; $i < $linesCount; ++$i) { |
| 679 |
if ('' === $lines[$i]) { |
| 680 |
$value .= "\n"; |
| 681 |
$previousLineBlank = \true; |
| 682 |
} elseif ($previousLineBlank) { |
| 683 |
$value .= $lines[$i]; |
| 684 |
$previousLineBlank = \false; |
| 685 |
} else { |
| 686 |
$value .= ' ' . $lines[$i]; |
| 687 |
$previousLineBlank = \false; |
| 688 |
} |
| 689 |
} |
| 690 |
Inline::$parsedLineNumber = $this->getRealCurrentLineNb(); |
| 691 |
$parsedValue = Inline::parse($value, $flags, $this->refs, $this->state); |
| 692 |
if ('mapping' === $context && \is_string($parsedValue) && '"' !== $value[0] && "'" !== $value[0] && '[' !== $value[0] && '{' !== $value[0] && '!' !== $value[0] && \false !== strpos($parsedValue, ': ')) { |
| 693 |
throw new ParseException('A colon cannot be used in an unquoted mapping value.', $this->getRealCurrentLineNb() + 1, $value, $this->filename); |
| 694 |
} |
| 695 |
return $parsedValue; |
| 696 |
} |
| 697 |
} catch (ParseException $e) { |
| 698 |
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
| 699 |
$e->setSnippet($this->currentLine); |
| 700 |
throw $e; |
| 701 |
} |
| 702 |
} |
| 703 |
/** |
| 704 |
* Parses a block scalar. |
| 705 |
* |
| 706 |
* @param string $style The style indicator that was used to begin this block scalar (| or >) |
| 707 |
* @param string $chomping The chomping indicator that was used to begin this block scalar (+ or -) |
| 708 |
* @param int $indentation The indentation indicator that was used to begin this block scalar |
| 709 |
*/ |
| 710 |
private function parseBlockScalar(string $style, string $chomping = '', int $indentation = 0): string |
| 711 |
{ |
| 712 |
$notEOF = $this->moveToNextLine(); |
| 713 |
if (!$notEOF) { |
| 714 |
return ''; |
| 715 |
} |
| 716 |
$isCurrentLineBlank = $this->isCurrentLineBlank(); |
| 717 |
$blockLines = []; |
| 718 |
// leading blank lines are consumed before determining indentation |
| 719 |
while ($notEOF && $isCurrentLineBlank) { |
| 720 |
// newline only if not EOF |
| 721 |
if ($notEOF = $this->moveToNextLine()) { |
| 722 |
$blockLines[] = ''; |
| 723 |
$isCurrentLineBlank = $this->isCurrentLineBlank(); |
| 724 |
} |
| 725 |
} |
| 726 |
// determine indentation if not specified |
| 727 |
if (0 === $indentation) { |
| 728 |
$currentLineLength = \strlen($this->currentLine); |
| 729 |
for ($i = 0; $i < $currentLineLength && ' ' === $this->currentLine[$i]; ++$i) { |
| 730 |
++$indentation; |
| 731 |
} |
| 732 |
} |
| 733 |
if ($indentation > 0) { |
| 734 |
$pattern = sprintf('/^ {%d}(.*)$/', $indentation); |
| 735 |
while ($notEOF && ($isCurrentLineBlank || self::preg_match($pattern, $this->currentLine, $matches))) { |
| 736 |
if ($isCurrentLineBlank && \strlen($this->currentLine) > $indentation) { |
| 737 |
$blockLines[] = substr($this->currentLine, $indentation); |
| 738 |
} elseif ($isCurrentLineBlank) { |
| 739 |
$blockLines[] = ''; |
| 740 |
} else { |
| 741 |
$blockLines[] = $matches[1]; |
| 742 |
} |
| 743 |
// newline only if not EOF |
| 744 |
if ($notEOF = $this->moveToNextLine()) { |
| 745 |
$isCurrentLineBlank = $this->isCurrentLineBlank(); |
| 746 |
} |
| 747 |
} |
| 748 |
} elseif ($notEOF) { |
| 749 |
$blockLines[] = ''; |
| 750 |
} |
| 751 |
if ($notEOF) { |
| 752 |
$blockLines[] = ''; |
| 753 |
$this->moveToPreviousLine(); |
| 754 |
} elseif (!$notEOF && !$this->isCurrentLineLastLineInDocument()) { |
| 755 |
$blockLines[] = ''; |
| 756 |
} |
| 757 |
// folded style |
| 758 |
if ('>' === $style) { |
| 759 |
$text = ''; |
| 760 |
$previousLineIndented = \false; |
| 761 |
$previousLineBlank = \false; |
| 762 |
for ($i = 0, $blockLinesCount = \count($blockLines); $i < $blockLinesCount; ++$i) { |
| 763 |
if ('' === $blockLines[$i]) { |
| 764 |
$text .= "\n"; |
| 765 |
$previousLineIndented = \false; |
| 766 |
$previousLineBlank = \true; |
| 767 |
} elseif (' ' === $blockLines[$i][0]) { |
| 768 |
$text .= "\n" . $blockLines[$i]; |
| 769 |
$previousLineIndented = \true; |
| 770 |
$previousLineBlank = \false; |
| 771 |
} elseif ($previousLineIndented) { |
| 772 |
$text .= "\n" . $blockLines[$i]; |
| 773 |
$previousLineIndented = \false; |
| 774 |
$previousLineBlank = \false; |
| 775 |
} elseif ($previousLineBlank || 0 === $i) { |
| 776 |
$text .= $blockLines[$i]; |
| 777 |
$previousLineIndented = \false; |
| 778 |
$previousLineBlank = \false; |
| 779 |
} else { |
| 780 |
$text .= ' ' . $blockLines[$i]; |
| 781 |
$previousLineIndented = \false; |
| 782 |
$previousLineBlank = \false; |
| 783 |
} |
| 784 |
} |
| 785 |
} else { |
| 786 |
$text = implode("\n", $blockLines); |
| 787 |
} |
| 788 |
// deal with trailing newlines |
| 789 |
if ('' === $chomping) { |
| 790 |
$text = preg_replace('/\n+$/', "\n", $text); |
| 791 |
} elseif ('-' === $chomping) { |
| 792 |
$text = preg_replace('/\n+$/', '', $text); |
| 793 |
} |
| 794 |
return $text; |
| 795 |
} |
| 796 |
/** |
| 797 |
* Returns true if the next line is indented. |
| 798 |
*/ |
| 799 |
private function isNextLineIndented(): bool |
| 800 |
{ |
| 801 |
$currentIndentation = $this->getCurrentLineIndentation(); |
| 802 |
$movements = 0; |
| 803 |
do { |
| 804 |
$EOF = !$this->moveToNextLine(); |
| 805 |
if (!$EOF) { |
| 806 |
++$movements; |
| 807 |
} |
| 808 |
} while (!$EOF && ($this->isCurrentLineEmpty() || $this->isCurrentLineComment())); |
| 809 |
if ($EOF) { |
| 810 |
for ($i = 0; $i < $movements; ++$i) { |
| 811 |
$this->moveToPreviousLine(); |
| 812 |
} |
| 813 |
return \false; |
| 814 |
} |
| 815 |
$ret = $this->getCurrentLineIndentation() > $currentIndentation; |
| 816 |
for ($i = 0; $i < $movements; ++$i) { |
| 817 |
$this->moveToPreviousLine(); |
| 818 |
} |
| 819 |
return $ret; |
| 820 |
} |
| 821 |
/** |
| 822 |
* Returns true if the current line is blank or if it is a comment line. |
| 823 |
*/ |
| 824 |
private function isCurrentLineEmpty(): bool |
| 825 |
{ |
| 826 |
return $this->isCurrentLineBlank() || $this->isCurrentLineComment(); |
| 827 |
} |
| 828 |
/** |
| 829 |
* Returns true if the current line is blank. |
| 830 |
*/ |
| 831 |
private function isCurrentLineBlank(): bool |
| 832 |
{ |
| 833 |
return '' === $this->currentLine || '' === trim($this->currentLine, ' '); |
| 834 |
} |
| 835 |
/** |
| 836 |
* Returns true if the current line is a comment line. |
| 837 |
*/ |
| 838 |
private function isCurrentLineComment(): bool |
| 839 |
{ |
| 840 |
// checking explicitly the first char of the trim is faster than loops or strpos |
| 841 |
$ltrimmedLine = '' !== $this->currentLine && ' ' === $this->currentLine[0] ? ltrim($this->currentLine, ' ') : $this->currentLine; |
| 842 |
return '' !== $ltrimmedLine && '#' === $ltrimmedLine[0]; |
| 843 |
} |
| 844 |
private function isCurrentLineLastLineInDocument(): bool |
| 845 |
{ |
| 846 |
return $this->offset + $this->currentLineNb >= $this->totalNumberOfLines - 1; |
| 847 |
} |
| 848 |
/** |
| 849 |
* Cleanups a YAML string to be parsed. |
| 850 |
* |
| 851 |
* @param string $value The input YAML string |
| 852 |
*/ |
| 853 |
private function cleanup(string $value): string |
| 854 |
{ |
| 855 |
$value = str_replace(["\r\n", "\r"], "\n", $value); |
| 856 |
// strip YAML header |
| 857 |
$count = 0; |
| 858 |
$value = preg_replace('#^%YAML[: ][\d.]++[^\n]*+\n#u', '', $value, -1, $count); |
| 859 |
$this->offset += $count; |
| 860 |
// remove leading comments |
| 861 |
$trimmedValue = preg_replace('#^(?:\#[^\n]*+\n)++#', '', $value, -1, $count); |
| 862 |
if (1 === $count) { |
| 863 |
// items have been removed, update the offset |
| 864 |
$this->offset += substr_count($value, "\n") - substr_count($trimmedValue, "\n"); |
| 865 |
$value = $trimmedValue; |
| 866 |
} |
| 867 |
// remove start of the document marker (---) |
| 868 |
$trimmedValue = preg_replace('#^---[^\n]*+\n#', '', $value, -1, $count); |
| 869 |
if (1 === $count) { |
| 870 |
// items have been removed, update the offset |
| 871 |
$this->offset += substr_count($value, "\n") - substr_count($trimmedValue, "\n"); |
| 872 |
$value = $trimmedValue; |
| 873 |
// remove end of the document marker (...) |
| 874 |
$value = preg_replace('#\.\.\.\s*+$#', '', $value); |
| 875 |
} |
| 876 |
return $value; |
| 877 |
} |
| 878 |
/** |
| 879 |
* Returns true if the next line starts unindented collection. |
| 880 |
*/ |
| 881 |
private function isNextLineUnIndentedCollection(): bool |
| 882 |
{ |
| 883 |
$currentIndentation = $this->getCurrentLineIndentation(); |
| 884 |
$movements = 0; |
| 885 |
do { |
| 886 |
$EOF = !$this->moveToNextLine(); |
| 887 |
if (!$EOF) { |
| 888 |
++$movements; |
| 889 |
} |
| 890 |
} while (!$EOF && ($this->isCurrentLineEmpty() || $this->isCurrentLineComment())); |
| 891 |
if ($EOF) { |
| 892 |
return \false; |
| 893 |
} |
| 894 |
$ret = $this->getCurrentLineIndentation() === $currentIndentation && $this->isStringUnIndentedCollectionItem(); |
| 895 |
for ($i = 0; $i < $movements; ++$i) { |
| 896 |
$this->moveToPreviousLine(); |
| 897 |
} |
| 898 |
return $ret; |
| 899 |
} |
| 900 |
/** |
| 901 |
* Returns true if the string is un-indented collection item. |
| 902 |
*/ |
| 903 |
private function isStringUnIndentedCollectionItem(): bool |
| 904 |
{ |
| 905 |
return '-' === rtrim($this->currentLine) || 0 === strpos($this->currentLine, '- '); |
| 906 |
} |
| 907 |
/** |
| 908 |
* A local wrapper for "preg_match" which will throw a ParseException if there |
| 909 |
* is an internal error in the PCRE engine. |
| 910 |
* |
| 911 |
* This avoids us needing to check for "false" every time PCRE is used |
| 912 |
* in the YAML engine |
| 913 |
* |
| 914 |
* @throws ParseException on a PCRE internal error |
| 915 |
* |
| 916 |
* @see preg_last_error() |
| 917 |
* |
| 918 |
* @internal |
| 919 |
*/ |
| 920 |
public static function preg_match(string $pattern, string $subject, ?array &$matches = null, int $flags = 0, int $offset = 0): int |
| 921 |
{ |
| 922 |
if (\false === $ret = preg_match($pattern, $subject, $matches, $flags, $offset)) { |
| 923 |
switch (preg_last_error()) { |
| 924 |
case \PREG_INTERNAL_ERROR: |
| 925 |
$error = 'Internal PCRE error.'; |
| 926 |
break; |
| 927 |
case \PREG_BACKTRACK_LIMIT_ERROR: |
| 928 |
$error = 'pcre.backtrack_limit reached.'; |
| 929 |
break; |
| 930 |
case \PREG_RECURSION_LIMIT_ERROR: |
| 931 |
$error = 'pcre.recursion_limit reached.'; |
| 932 |
break; |
| 933 |
case \PREG_BAD_UTF8_ERROR: |
| 934 |
$error = 'Malformed UTF-8 data.'; |
| 935 |
break; |
| 936 |
case \PREG_BAD_UTF8_OFFSET_ERROR: |
| 937 |
$error = 'Offset doesn\'t correspond to the begin of a valid UTF-8 code point.'; |
| 938 |
break; |
| 939 |
default: |
| 940 |
$error = 'Error.'; |
| 941 |
} |
| 942 |
throw new ParseException($error); |
| 943 |
} |
| 944 |
return $ret; |
| 945 |
} |
| 946 |
/** |
| 947 |
* Trim the tag on top of the value. |
| 948 |
* |
| 949 |
* Prevent values such as "!foo {quz: bar}" to be considered as |
| 950 |
* a mapping block. |
| 951 |
*/ |
| 952 |
private function trimTag(string $value): string |
| 953 |
{ |
| 954 |
if ('!' === $value[0]) { |
| 955 |
return ltrim(substr($value, 1, strcspn($value, " \r\n", 1)), ' '); |
| 956 |
} |
| 957 |
return $value; |
| 958 |
} |
| 959 |
private function getLineTag(string $value, int $flags, bool $nextLineCheck = \true): ?string |
| 960 |
{ |
| 961 |
if ('' === $value || '!' !== $value[0] || 1 !== self::preg_match('/^' . self::TAG_PATTERN . ' *( +#.*)?$/', $value, $matches)) { |
| 962 |
return null; |
| 963 |
} |
| 964 |
if ($nextLineCheck && !$this->isNextLineIndented()) { |
| 965 |
return null; |
| 966 |
} |
| 967 |
$tag = substr($matches['tag'], 1); |
| 968 |
// Built-in tags |
| 969 |
if ($tag && '!' === $tag[0]) { |
| 970 |
throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), $this->getRealCurrentLineNb() + 1, $value, $this->filename); |
| 971 |
} |
| 972 |
if (Yaml::PARSE_CUSTOM_TAGS & $flags) { |
| 973 |
return $tag; |
| 974 |
} |
| 975 |
throw new ParseException(sprintf('Tags support is not enabled. You must use the flag "Yaml::PARSE_CUSTOM_TAGS" to use "%s".', $matches['tag']), $this->getRealCurrentLineNb() + 1, $value, $this->filename); |
| 976 |
} |
| 977 |
private function lexInlineQuotedString(int &$cursor = 0): string |
| 978 |
{ |
| 979 |
$quotation = $this->currentLine[$cursor]; |
| 980 |
$value = $quotation; |
| 981 |
++$cursor; |
| 982 |
$previousLineWasNewline = \true; |
| 983 |
$previousLineWasTerminatedWithBackslash = \false; |
| 984 |
$lineNumber = 0; |
| 985 |
do { |
| 986 |
if (++$lineNumber > 1) { |
| 987 |
$cursor += strspn($this->currentLine, ' ', $cursor); |
| 988 |
} |
| 989 |
if ($this->isCurrentLineBlank()) { |
| 990 |
$value .= "\n"; |
| 991 |
} elseif (!$previousLineWasNewline && !$previousLineWasTerminatedWithBackslash) { |
| 992 |
$value .= ' '; |
| 993 |
} |
| 994 |
for (; \strlen($this->currentLine) > $cursor; ++$cursor) { |
| 995 |
switch ($this->currentLine[$cursor]) { |
| 996 |
case '\\': |
| 997 |
if ("'" === $quotation) { |
| 998 |
$value .= '\\'; |
| 999 |
} elseif (isset($this->currentLine[++$cursor])) { |
| 1000 |
$value .= '\\' . $this->currentLine[$cursor]; |
| 1001 |
} |
| 1002 |
break; |
| 1003 |
case $quotation: |
| 1004 |
++$cursor; |
| 1005 |
if ("'" === $quotation && isset($this->currentLine[$cursor]) && "'" === $this->currentLine[$cursor]) { |
| 1006 |
$value .= "''"; |
| 1007 |
break; |
| 1008 |
} |
| 1009 |
return $value . $quotation; |
| 1010 |
default: |
| 1011 |
$value .= $this->currentLine[$cursor]; |
| 1012 |
} |
| 1013 |
} |
| 1014 |
if ($this->isCurrentLineBlank()) { |
| 1015 |
$previousLineWasNewline = \true; |
| 1016 |
$previousLineWasTerminatedWithBackslash = \false; |
| 1017 |
} elseif ('\\' === $this->currentLine[-1]) { |
| 1018 |
$previousLineWasNewline = \false; |
| 1019 |
$previousLineWasTerminatedWithBackslash = \true; |
| 1020 |
} else { |
| 1021 |
$previousLineWasNewline = \false; |
| 1022 |
$previousLineWasTerminatedWithBackslash = \false; |
| 1023 |
} |
| 1024 |
if ($this->hasMoreLines()) { |
| 1025 |
$cursor = 0; |
| 1026 |
} |
| 1027 |
} while ($this->moveToNextLine()); |
| 1028 |
throw new ParseException('Malformed inline YAML string.'); |
| 1029 |
} |
| 1030 |
private function lexUnquotedString(int &$cursor): string |
| 1031 |
{ |
| 1032 |
$offset = $cursor; |
| 1033 |
$cursor += strcspn($this->currentLine, '[]{},: ', $cursor); |
| 1034 |
if ($cursor === $offset) { |
| 1035 |
throw new ParseException('Malformed unquoted YAML string.'); |
| 1036 |
} |
| 1037 |
return substr($this->currentLine, $offset, $cursor - $offset); |
| 1038 |
} |
| 1039 |
private function lexInlineMapping(int &$cursor = 0): string |
| 1040 |
{ |
| 1041 |
return $this->lexInlineStructure($cursor, '}'); |
| 1042 |
} |
| 1043 |
private function lexInlineSequence(int &$cursor = 0): string |
| 1044 |
{ |
| 1045 |
return $this->lexInlineStructure($cursor, ']'); |
| 1046 |
} |
| 1047 |
private function lexInlineStructure(int &$cursor, string $closingTag): string |
| 1048 |
{ |
| 1049 |
$value = $this->currentLine[$cursor]; |
| 1050 |
++$cursor; |
| 1051 |
do { |
| 1052 |
$this->consumeWhitespaces($cursor); |
| 1053 |
while (isset($this->currentLine[$cursor])) { |
| 1054 |
switch ($this->currentLine[$cursor]) { |
| 1055 |
case '"': |
| 1056 |
case "'": |
| 1057 |
$value .= $this->lexInlineQuotedString($cursor); |
| 1058 |
break; |
| 1059 |
case ':': |
| 1060 |
case ',': |
| 1061 |
$value .= $this->currentLine[$cursor]; |
| 1062 |
++$cursor; |
| 1063 |
break; |
| 1064 |
case '{': |
| 1065 |
$value .= $this->lexInlineMapping($cursor); |
| 1066 |
break; |
| 1067 |
case '[': |
| 1068 |
$value .= $this->lexInlineSequence($cursor); |
| 1069 |
break; |
| 1070 |
case $closingTag: |
| 1071 |
$value .= $this->currentLine[$cursor]; |
| 1072 |
++$cursor; |
| 1073 |
return $value; |
| 1074 |
case '#': |
| 1075 |
break 2; |
| 1076 |
default: |
| 1077 |
$value .= $this->lexUnquotedString($cursor); |
| 1078 |
} |
| 1079 |
if ($this->consumeWhitespaces($cursor)) { |
| 1080 |
$value .= ' '; |
| 1081 |
} |
| 1082 |
} |
| 1083 |
if ($this->hasMoreLines()) { |
| 1084 |
$cursor = 0; |
| 1085 |
} |
| 1086 |
} while ($this->moveToNextLine()); |
| 1087 |
throw new ParseException('Malformed inline YAML string.'); |
| 1088 |
} |
| 1089 |
private function consumeWhitespaces(int &$cursor): bool |
| 1090 |
{ |
| 1091 |
$whitespacesConsumed = 0; |
| 1092 |
do { |
| 1093 |
$whitespaceOnlyTokenLength = strspn($this->currentLine, ' ', $cursor); |
| 1094 |
$whitespacesConsumed += $whitespaceOnlyTokenLength; |
| 1095 |
$cursor += $whitespaceOnlyTokenLength; |
| 1096 |
if (isset($this->currentLine[$cursor])) { |
| 1097 |
return 0 < $whitespacesConsumed; |
| 1098 |
} |
| 1099 |
if ($this->hasMoreLines()) { |
| 1100 |
$cursor = 0; |
| 1101 |
} |
| 1102 |
} while ($this->moveToNextLine()); |
| 1103 |
return 0 < $whitespacesConsumed; |
| 1104 |
} |
| 1105 |
} |
| 1106 |
|
