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<?php |
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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 <[email protected]> |
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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 Symfony\Component\Yaml; |
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use Symfony\Component\Yaml\Exception\ParseException; |
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use 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 <[email protected]> |
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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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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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/** |
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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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$mbEncoding = null; |
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if (2 /* MB_OVERLOAD_STRING */ & (int) \ini_get('mbstring.func_overload')) { |
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$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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} |
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return $data; |
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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( |
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$subTag, |
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$this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(null, true), $flags) |
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); |
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} else { |
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if ( |
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isset($values['leadspaces']) |
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&& ( |
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'!' === $values['value'][0] |
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|| self::preg_match('#^(?P<key>'.Inline::REGEX_QUOTED_STRING.'|[^ \'"\{\[].*?) *\:(\s+(?P<value>.+?))?\s*$#u', $this->trimTag($values['value']), $matches) |
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) |
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) { |
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$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, $context); |
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} |
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} |
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if ($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 ( |
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self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:'.Inline::REGEX_QUOTED_STRING.'|(?:!?!php/const:)?[^ \'"\[\{!].*?)) *\:(( |\t)++(?P<value>.+))?$#u', rtrim($this->currentLine), $values) |
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&& (false === strpos($values['key'], ' #') || \in_array($values['key'][0], ['"', "'"])) |
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) { |
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if ($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, $this->filename); |
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} |
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$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, $this->currentLine); |
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} |
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// Convert float keys to strings, to avoid being converted to integers by PHP |
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if (\is_float($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($values['value']), 1); |
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if (!\array_key_exists($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, $this->filename); |
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} |
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$refValue = $this->refs[$refName]; |
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if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $refValue instanceof \stdClass) { |
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$refValue = (array) $refValue; |
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} |
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262
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if (!\is_array($refValue)) { |
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throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
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} |
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$data += $refValue; // array union |
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} else { |
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if (isset($values['value']) && '' !== $values['value']) { |
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$value = $values['value']; |
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} else { |
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$value = $this->getNextEmbedBlock(); |
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} |
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$parsed = $this->parseBlock($this->getRealCurrentLineNb() + 1, $value, $flags); |
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if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $parsed instanceof \stdClass) { |
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$parsed = (array) $parsed; |
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} |
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if (!\is_array($parsed)) { |
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throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
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} |
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283
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if (isset($parsed[0])) { |
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// If the value associated with the merge key is a sequence, then this sequence is expected to contain mapping nodes |
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// and each of these nodes is merged in turn according to its order in the sequence. Keys in mapping nodes earlier |
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// in the sequence override keys specified in later mapping nodes. |
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foreach ($parsed as $parsedItem) { |
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|
|
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $parsedItem instanceof \stdClass) { |
|
289
|
|
|
$parsedItem = (array) $parsedItem; |
|
290
|
|
|
} |
|
291
|
|
|
|
|
292
|
|
|
if (!\is_array($parsedItem)) { |
|
293
|
|
|
throw new ParseException('Merge items must be arrays.', $this->getRealCurrentLineNb() + 1, $parsedItem, $this->filename); |
|
294
|
|
|
} |
|
295
|
|
|
|
|
296
|
|
|
$data += $parsedItem; // array union |
|
297
|
|
|
} |
|
298
|
|
|
} else { |
|
299
|
|
|
// If the value associated with the key is a single mapping node, each of its key/value pairs is inserted into the |
|
300
|
|
|
// current mapping, unless the key already exists in it. |
|
301
|
|
|
$data += $parsed; // array union |
|
302
|
|
|
} |
|
303
|
|
|
} |
|
304
|
|
|
} elseif ('<<' !== $key && isset($values['value']) && '&' === $values['value'][0] && self::preg_match(self::REFERENCE_PATTERN, $values['value'], $matches)) { |
|
305
|
|
|
$isRef = $matches['ref']; |
|
306
|
|
|
$this->refsBeingParsed[] = $isRef; |
|
307
|
|
|
$values['value'] = $matches['value']; |
|
308
|
|
|
} |
|
309
|
|
|
|
|
310
|
|
|
$subTag = null; |
|
311
|
|
|
if ($mergeNode) { |
|
312
|
|
|
// Merge keys |
|
313
|
|
|
} elseif (!isset($values['value']) || '' === $values['value'] || 0 === strpos($values['value'], '#') || (null !== $subTag = $this->getLineTag($values['value'], $flags)) || '<<' === $key) { |
|
314
|
|
|
// hash |
|
315
|
|
|
// if next line is less indented or equal, then it means that the current value is null |
|
316
|
|
|
if (!$this->isNextLineIndented() && !$this->isNextLineUnIndentedCollection()) { |
|
317
|
|
|
// Spec: Keys MUST be unique; first one wins. |
|
318
|
|
|
// But overwriting is allowed when a merge node is used in current block. |
|
319
|
|
|
if ($allowOverwrite || !isset($data[$key])) { |
|
320
|
|
|
if (null !== $subTag) { |
|
321
|
|
|
$data[$key] = new TaggedValue($subTag, ''); |
|
|
|
|
|
|
322
|
|
|
} else { |
|
323
|
|
|
$data[$key] = null; |
|
324
|
|
|
} |
|
325
|
|
|
} else { |
|
326
|
|
|
throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), $this->getRealCurrentLineNb() + 1, $this->currentLine); |
|
327
|
|
|
} |
|
328
|
|
|
} else { |
|
329
|
|
|
// remember the parsed line number here in case we need it to provide some contexts in error messages below |
|
330
|
|
|
$realCurrentLineNbKey = $this->getRealCurrentLineNb(); |
|
331
|
|
|
$value = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(), $flags); |
|
332
|
|
|
if ('<<' === $key) { |
|
333
|
|
|
$this->refs[$refMatches['ref']] = $value; |
|
|
|
|
|
|
334
|
|
|
|
|
335
|
|
|
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $value instanceof \stdClass) { |
|
336
|
|
|
$value = (array) $value; |
|
337
|
|
|
} |
|
338
|
|
|
|
|
339
|
|
|
$data += $value; |
|
340
|
|
|
} elseif ($allowOverwrite || !isset($data[$key])) { |
|
341
|
|
|
// Spec: Keys MUST be unique; first one wins. |
|
342
|
|
|
// But overwriting is allowed when a merge node is used in current block. |
|
343
|
|
|
if (null !== $subTag) { |
|
344
|
|
|
$data[$key] = new TaggedValue($subTag, $value); |
|
345
|
|
|
} else { |
|
346
|
|
|
$data[$key] = $value; |
|
347
|
|
|
} |
|
348
|
|
|
} else { |
|
349
|
|
|
throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), $realCurrentLineNbKey + 1, $this->currentLine); |
|
350
|
|
|
} |
|
351
|
|
|
} |
|
352
|
|
|
} else { |
|
353
|
|
|
$value = $this->parseValue(rtrim($values['value']), $flags, $context); |
|
354
|
|
|
// Spec: Keys MUST be unique; first one wins. |
|
355
|
|
|
// But overwriting is allowed when a merge node is used in current block. |
|
356
|
|
|
if ($allowOverwrite || !isset($data[$key])) { |
|
357
|
|
|
$data[$key] = $value; |
|
358
|
|
|
} else { |
|
359
|
|
|
throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), $this->getRealCurrentLineNb() + 1, $this->currentLine); |
|
360
|
|
|
} |
|
361
|
|
|
} |
|
362
|
|
|
if ($isRef) { |
|
363
|
|
|
$this->refs[$isRef] = $data[$key]; |
|
364
|
|
|
array_pop($this->refsBeingParsed); |
|
365
|
|
|
} |
|
366
|
|
|
} elseif ('"' === $this->currentLine[0] || "'" === $this->currentLine[0]) { |
|
367
|
|
|
if (null !== $context) { |
|
368
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
369
|
|
|
} |
|
370
|
|
|
|
|
371
|
|
|
try { |
|
372
|
|
|
return Inline::parse($this->lexInlineQuotedString(), $flags, $this->refs); |
|
373
|
|
|
} catch (ParseException $e) { |
|
374
|
|
|
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
|
375
|
|
|
$e->setSnippet($this->currentLine); |
|
376
|
|
|
|
|
377
|
|
|
throw $e; |
|
378
|
|
|
} |
|
379
|
|
|
} elseif ('{' === $this->currentLine[0]) { |
|
380
|
|
|
if (null !== $context) { |
|
381
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
382
|
|
|
} |
|
383
|
|
|
|
|
384
|
|
|
try { |
|
385
|
|
|
$parsedMapping = Inline::parse($this->lexInlineMapping(), $flags, $this->refs); |
|
386
|
|
|
|
|
387
|
|
|
while ($this->moveToNextLine()) { |
|
388
|
|
|
if (!$this->isCurrentLineEmpty()) { |
|
389
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
390
|
|
|
} |
|
391
|
|
|
} |
|
392
|
|
|
|
|
393
|
|
|
return $parsedMapping; |
|
394
|
|
|
} catch (ParseException $e) { |
|
395
|
|
|
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
|
396
|
|
|
$e->setSnippet($this->currentLine); |
|
397
|
|
|
|
|
398
|
|
|
throw $e; |
|
399
|
|
|
} |
|
400
|
|
|
} elseif ('[' === $this->currentLine[0]) { |
|
401
|
|
|
if (null !== $context) { |
|
402
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
403
|
|
|
} |
|
404
|
|
|
|
|
405
|
|
|
try { |
|
406
|
|
|
$parsedSequence = Inline::parse($this->lexInlineSequence(), $flags, $this->refs); |
|
407
|
|
|
|
|
408
|
|
|
while ($this->moveToNextLine()) { |
|
409
|
|
|
if (!$this->isCurrentLineEmpty()) { |
|
410
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
411
|
|
|
} |
|
412
|
|
|
} |
|
413
|
|
|
|
|
414
|
|
|
return $parsedSequence; |
|
415
|
|
|
} catch (ParseException $e) { |
|
416
|
|
|
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
|
417
|
|
|
$e->setSnippet($this->currentLine); |
|
418
|
|
|
|
|
419
|
|
|
throw $e; |
|
420
|
|
|
} |
|
421
|
|
|
} else { |
|
422
|
|
|
// multiple documents are not supported |
|
423
|
|
|
if ('---' === $this->currentLine) { |
|
424
|
|
|
throw new ParseException('Multiple documents are not supported.', $this->currentLineNb + 1, $this->currentLine, $this->filename); |
|
425
|
|
|
} |
|
426
|
|
|
|
|
427
|
|
|
if ($deprecatedUsage = (isset($this->currentLine[1]) && '?' === $this->currentLine[0] && ' ' === $this->currentLine[1])) { |
|
428
|
|
|
throw new ParseException('Complex mappings are not supported.', $this->getRealCurrentLineNb() + 1, $this->currentLine); |
|
429
|
|
|
} |
|
430
|
|
|
|
|
431
|
|
|
// 1-liner optionally followed by newline(s) |
|
432
|
|
|
if (\is_string($value) && $this->lines[0] === trim($value)) { |
|
433
|
|
|
try { |
|
434
|
|
|
$value = Inline::parse($this->lines[0], $flags, $this->refs); |
|
435
|
|
|
} catch (ParseException $e) { |
|
436
|
|
|
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
|
437
|
|
|
$e->setSnippet($this->currentLine); |
|
438
|
|
|
|
|
439
|
|
|
throw $e; |
|
440
|
|
|
} |
|
441
|
|
|
|
|
442
|
|
|
return $value; |
|
443
|
|
|
} |
|
444
|
|
|
|
|
445
|
|
|
// try to parse the value as a multi-line string as a last resort |
|
446
|
|
|
if (0 === $this->currentLineNb) { |
|
447
|
|
|
$previousLineWasNewline = false; |
|
448
|
|
|
$previousLineWasTerminatedWithBackslash = false; |
|
449
|
|
|
$value = ''; |
|
450
|
|
|
|
|
451
|
|
|
foreach ($this->lines as $line) { |
|
452
|
|
|
$trimmedLine = trim($line); |
|
453
|
|
|
if ('#' === ($trimmedLine[0] ?? '')) { |
|
454
|
|
|
continue; |
|
455
|
|
|
} |
|
456
|
|
|
// If the indentation is not consistent at offset 0, it is to be considered as a ParseError |
|
457
|
|
|
if (0 === $this->offset && !$deprecatedUsage && isset($line[0]) && ' ' === $line[0]) { |
|
458
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
459
|
|
|
} |
|
460
|
|
|
|
|
461
|
|
|
if (false !== strpos($line, ': ')) { |
|
462
|
|
|
throw new ParseException('Mapping values are not allowed in multi-line blocks.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
463
|
|
|
} |
|
464
|
|
|
|
|
465
|
|
|
if ('' === $trimmedLine) { |
|
466
|
|
|
$value .= "\n"; |
|
467
|
|
|
} elseif (!$previousLineWasNewline && !$previousLineWasTerminatedWithBackslash) { |
|
468
|
|
|
$value .= ' '; |
|
469
|
|
|
} |
|
470
|
|
|
|
|
471
|
|
|
if ('' !== $trimmedLine && '\\' === substr($line, -1)) { |
|
472
|
|
|
$value .= ltrim(substr($line, 0, -1)); |
|
473
|
|
|
} elseif ('' !== $trimmedLine) { |
|
474
|
|
|
$value .= $trimmedLine; |
|
475
|
|
|
} |
|
476
|
|
|
|
|
477
|
|
|
if ('' === $trimmedLine) { |
|
478
|
|
|
$previousLineWasNewline = true; |
|
479
|
|
|
$previousLineWasTerminatedWithBackslash = false; |
|
480
|
|
|
} elseif ('\\' === substr($line, -1)) { |
|
481
|
|
|
$previousLineWasNewline = false; |
|
482
|
|
|
$previousLineWasTerminatedWithBackslash = true; |
|
483
|
|
|
} else { |
|
484
|
|
|
$previousLineWasNewline = false; |
|
485
|
|
|
$previousLineWasTerminatedWithBackslash = false; |
|
486
|
|
|
} |
|
487
|
|
|
} |
|
488
|
|
|
|
|
489
|
|
|
try { |
|
490
|
|
|
return Inline::parse(trim($value)); |
|
491
|
|
|
} catch (ParseException $e) { |
|
492
|
|
|
// fall-through to the ParseException thrown below |
|
493
|
|
|
} |
|
494
|
|
|
} |
|
495
|
|
|
|
|
496
|
|
|
throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
497
|
|
|
} |
|
498
|
|
|
} while ($this->moveToNextLine()); |
|
499
|
|
|
|
|
500
|
|
|
if (null !== $tag) { |
|
501
|
|
|
$data = new TaggedValue($tag, $data); |
|
502
|
|
|
} |
|
503
|
|
|
|
|
504
|
|
|
if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && 'mapping' === $context && !\is_object($data)) { |
|
505
|
|
|
$object = new \stdClass(); |
|
506
|
|
|
|
|
507
|
|
|
foreach ($data as $key => $value) { |
|
508
|
|
|
$object->$key = $value; |
|
509
|
|
|
} |
|
510
|
|
|
|
|
511
|
|
|
$data = $object; |
|
512
|
|
|
} |
|
513
|
|
|
|
|
514
|
|
|
return empty($data) ? null : $data; |
|
515
|
|
|
} |
|
516
|
|
|
|
|
517
|
|
|
private function parseBlock(int $offset, string $yaml, int $flags) |
|
518
|
|
|
{ |
|
519
|
|
|
$skippedLineNumbers = $this->skippedLineNumbers; |
|
520
|
|
|
|
|
521
|
|
|
foreach ($this->locallySkippedLineNumbers as $lineNumber) { |
|
522
|
|
|
if ($lineNumber < $offset) { |
|
523
|
|
|
continue; |
|
524
|
|
|
} |
|
525
|
|
|
|
|
526
|
|
|
$skippedLineNumbers[] = $lineNumber; |
|
527
|
|
|
} |
|
528
|
|
|
|
|
529
|
|
|
$parser = new self(); |
|
530
|
|
|
$parser->offset = $offset; |
|
531
|
|
|
$parser->totalNumberOfLines = $this->totalNumberOfLines; |
|
532
|
|
|
$parser->skippedLineNumbers = $skippedLineNumbers; |
|
533
|
|
|
$parser->refs = &$this->refs; |
|
534
|
|
|
$parser->refsBeingParsed = $this->refsBeingParsed; |
|
535
|
|
|
|
|
536
|
|
|
return $parser->doParse($yaml, $flags); |
|
537
|
|
|
} |
|
538
|
|
|
|
|
539
|
|
|
/** |
|
540
|
|
|
* Returns the current line number (takes the offset into account). |
|
541
|
|
|
* |
|
542
|
|
|
* @internal |
|
543
|
|
|
*/ |
|
544
|
|
|
public function getRealCurrentLineNb(): int |
|
545
|
|
|
{ |
|
546
|
|
|
$realCurrentLineNumber = $this->currentLineNb + $this->offset; |
|
547
|
|
|
|
|
548
|
|
|
foreach ($this->skippedLineNumbers as $skippedLineNumber) { |
|
549
|
|
|
if ($skippedLineNumber > $realCurrentLineNumber) { |
|
550
|
|
|
break; |
|
551
|
|
|
} |
|
552
|
|
|
|
|
553
|
|
|
++$realCurrentLineNumber; |
|
554
|
|
|
} |
|
555
|
|
|
|
|
556
|
|
|
return $realCurrentLineNumber; |
|
557
|
|
|
} |
|
558
|
|
|
|
|
559
|
|
|
/** |
|
560
|
|
|
* Returns the current line indentation. |
|
561
|
|
|
*/ |
|
562
|
|
|
private function getCurrentLineIndentation(): int |
|
563
|
|
|
{ |
|
564
|
|
|
if (' ' !== ($this->currentLine[0] ?? '')) { |
|
565
|
|
|
return 0; |
|
566
|
|
|
} |
|
567
|
|
|
|
|
568
|
|
|
return \strlen($this->currentLine) - \strlen(ltrim($this->currentLine, ' ')); |
|
569
|
|
|
} |
|
570
|
|
|
|
|
571
|
|
|
/** |
|
572
|
|
|
* Returns the next embed block of YAML. |
|
573
|
|
|
* |
|
574
|
|
|
* @param int|null $indentation The indent level at which the block is to be read, or null for default |
|
575
|
|
|
* @param bool $inSequence True if the enclosing data structure is a sequence |
|
576
|
|
|
* |
|
577
|
|
|
* @throws ParseException When indentation problem are detected |
|
578
|
|
|
*/ |
|
579
|
|
|
private function getNextEmbedBlock(?int $indentation = null, bool $inSequence = false): string |
|
580
|
|
|
{ |
|
581
|
|
|
$oldLineIndentation = $this->getCurrentLineIndentation(); |
|
582
|
|
|
|
|
583
|
|
|
if (!$this->moveToNextLine()) { |
|
584
|
|
|
return ''; |
|
585
|
|
|
} |
|
586
|
|
|
|
|
587
|
|
|
if (null === $indentation) { |
|
588
|
|
|
$newIndent = null; |
|
589
|
|
|
$movements = 0; |
|
590
|
|
|
|
|
591
|
|
|
do { |
|
592
|
|
|
$EOF = false; |
|
593
|
|
|
|
|
594
|
|
|
// empty and comment-like lines do not influence the indentation depth |
|
595
|
|
|
if ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) { |
|
596
|
|
|
$EOF = !$this->moveToNextLine(); |
|
597
|
|
|
|
|
598
|
|
|
if (!$EOF) { |
|
599
|
|
|
++$movements; |
|
600
|
|
|
} |
|
601
|
|
|
} else { |
|
602
|
|
|
$newIndent = $this->getCurrentLineIndentation(); |
|
603
|
|
|
} |
|
604
|
|
|
} while (!$EOF && null === $newIndent); |
|
605
|
|
|
|
|
606
|
|
|
for ($i = 0; $i < $movements; ++$i) { |
|
607
|
|
|
$this->moveToPreviousLine(); |
|
608
|
|
|
} |
|
609
|
|
|
|
|
610
|
|
|
$unindentedEmbedBlock = $this->isStringUnIndentedCollectionItem(); |
|
611
|
|
|
|
|
612
|
|
|
if (!$this->isCurrentLineEmpty() && 0 === $newIndent && !$unindentedEmbedBlock) { |
|
613
|
|
|
throw new ParseException('Indentation problem.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
614
|
|
|
} |
|
615
|
|
|
} else { |
|
616
|
|
|
$newIndent = $indentation; |
|
617
|
|
|
} |
|
618
|
|
|
|
|
619
|
|
|
$data = []; |
|
620
|
|
|
|
|
621
|
|
|
if ($this->getCurrentLineIndentation() >= $newIndent) { |
|
622
|
|
|
$data[] = substr($this->currentLine, $newIndent ?? 0); |
|
623
|
|
|
} elseif ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) { |
|
624
|
|
|
$data[] = $this->currentLine; |
|
625
|
|
|
} else { |
|
626
|
|
|
$this->moveToPreviousLine(); |
|
627
|
|
|
|
|
628
|
|
|
return ''; |
|
629
|
|
|
} |
|
630
|
|
|
|
|
631
|
|
|
if ($inSequence && $oldLineIndentation === $newIndent && isset($data[0][0]) && '-' === $data[0][0]) { |
|
632
|
|
|
// the previous line contained a dash but no item content, this line is a sequence item with the same indentation |
|
633
|
|
|
// and therefore no nested list or mapping |
|
634
|
|
|
$this->moveToPreviousLine(); |
|
635
|
|
|
|
|
636
|
|
|
return ''; |
|
637
|
|
|
} |
|
638
|
|
|
|
|
639
|
|
|
$isItUnindentedCollection = $this->isStringUnIndentedCollectionItem(); |
|
640
|
|
|
$isItComment = $this->isCurrentLineComment(); |
|
641
|
|
|
|
|
642
|
|
|
while ($this->moveToNextLine()) { |
|
643
|
|
|
if ($isItComment && !$isItUnindentedCollection) { |
|
644
|
|
|
$isItUnindentedCollection = $this->isStringUnIndentedCollectionItem(); |
|
645
|
|
|
$isItComment = $this->isCurrentLineComment(); |
|
646
|
|
|
} |
|
647
|
|
|
|
|
648
|
|
|
$indent = $this->getCurrentLineIndentation(); |
|
649
|
|
|
|
|
650
|
|
|
if ($isItUnindentedCollection && !$this->isCurrentLineEmpty() && !$this->isStringUnIndentedCollectionItem() && $newIndent === $indent) { |
|
651
|
|
|
$this->moveToPreviousLine(); |
|
652
|
|
|
break; |
|
653
|
|
|
} |
|
654
|
|
|
|
|
655
|
|
|
if ($this->isCurrentLineBlank()) { |
|
656
|
|
|
$data[] = substr($this->currentLine, $newIndent ?? 0); |
|
657
|
|
|
continue; |
|
658
|
|
|
} |
|
659
|
|
|
|
|
660
|
|
|
if ($indent >= $newIndent) { |
|
661
|
|
|
$data[] = substr($this->currentLine, $newIndent ?? 0); |
|
662
|
|
|
} elseif ($this->isCurrentLineComment()) { |
|
663
|
|
|
$data[] = $this->currentLine; |
|
664
|
|
|
} elseif (0 == $indent) { |
|
665
|
|
|
$this->moveToPreviousLine(); |
|
666
|
|
|
|
|
667
|
|
|
break; |
|
668
|
|
|
} else { |
|
669
|
|
|
throw new ParseException('Indentation problem.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename); |
|
670
|
|
|
} |
|
671
|
|
|
} |
|
672
|
|
|
|
|
673
|
|
|
return implode("\n", $data); |
|
674
|
|
|
} |
|
675
|
|
|
|
|
676
|
|
|
private function hasMoreLines(): bool |
|
677
|
|
|
{ |
|
678
|
|
|
return (\count($this->lines) - 1) > $this->currentLineNb; |
|
679
|
|
|
} |
|
680
|
|
|
|
|
681
|
|
|
/** |
|
682
|
|
|
* Moves the parser to the next line. |
|
683
|
|
|
*/ |
|
684
|
|
|
private function moveToNextLine(): bool |
|
685
|
|
|
{ |
|
686
|
|
|
if ($this->currentLineNb >= $this->numberOfParsedLines - 1) { |
|
687
|
|
|
return false; |
|
688
|
|
|
} |
|
689
|
|
|
|
|
690
|
|
|
$this->currentLine = $this->lines[++$this->currentLineNb]; |
|
691
|
|
|
|
|
692
|
|
|
return true; |
|
693
|
|
|
} |
|
694
|
|
|
|
|
695
|
|
|
/** |
|
696
|
|
|
* Moves the parser to the previous line. |
|
697
|
|
|
*/ |
|
698
|
|
|
private function moveToPreviousLine(): bool |
|
699
|
|
|
{ |
|
700
|
|
|
if ($this->currentLineNb < 1) { |
|
701
|
|
|
return false; |
|
702
|
|
|
} |
|
703
|
|
|
|
|
704
|
|
|
$this->currentLine = $this->lines[--$this->currentLineNb]; |
|
705
|
|
|
|
|
706
|
|
|
return true; |
|
707
|
|
|
} |
|
708
|
|
|
|
|
709
|
|
|
/** |
|
710
|
|
|
* Parses a YAML value. |
|
711
|
|
|
* |
|
712
|
|
|
* @param string $value A YAML value |
|
713
|
|
|
* @param int $flags A bit field of Yaml::PARSE_* constants to customize the YAML parser behavior |
|
714
|
|
|
* @param string $context The parser context (either sequence or mapping) |
|
715
|
|
|
* |
|
716
|
|
|
* @return mixed |
|
717
|
|
|
* |
|
718
|
|
|
* @throws ParseException When reference does not exist |
|
719
|
|
|
*/ |
|
720
|
|
|
private function parseValue(string $value, int $flags, string $context) |
|
721
|
|
|
{ |
|
722
|
|
|
if (0 === strpos($value, '*')) { |
|
723
|
|
|
if (false !== $pos = strpos($value, '#')) { |
|
724
|
|
|
$value = substr($value, 1, $pos - 2); |
|
725
|
|
|
} else { |
|
726
|
|
|
$value = substr($value, 1); |
|
727
|
|
|
} |
|
728
|
|
|
|
|
729
|
|
|
if (!\array_key_exists($value, $this->refs)) { |
|
730
|
|
|
if (false !== $pos = array_search($value, $this->refsBeingParsed, true)) { |
|
731
|
|
|
throw new ParseException(sprintf('Circular reference [%s] detected for reference "%s".', implode(', ', array_merge(\array_slice($this->refsBeingParsed, $pos), [$value])), $value), $this->currentLineNb + 1, $this->currentLine, $this->filename); |
|
|
|
|
|
|
732
|
|
|
} |
|
733
|
|
|
|
|
734
|
|
|
throw new ParseException(sprintf('Reference "%s" does not exist.', $value), $this->currentLineNb + 1, $this->currentLine, $this->filename); |
|
735
|
|
|
} |
|
736
|
|
|
|
|
737
|
|
|
return $this->refs[$value]; |
|
738
|
|
|
} |
|
739
|
|
|
|
|
740
|
|
|
if (\in_array($value[0], ['!', '|', '>'], true) && self::preg_match('/^(?:'.self::TAG_PATTERN.' +)?'.self::BLOCK_SCALAR_HEADER_PATTERN.'$/', $value, $matches)) { |
|
741
|
|
|
$modifiers = $matches['modifiers'] ?? ''; |
|
742
|
|
|
|
|
743
|
|
|
$data = $this->parseBlockScalar($matches['separator'], preg_replace('#\d+#', '', $modifiers), abs((int) $modifiers)); |
|
|
|
|
|
|
744
|
|
|
|
|
745
|
|
|
if ('' !== $matches['tag'] && '!' !== $matches['tag']) { |
|
746
|
|
|
if ('!!binary' === $matches['tag']) { |
|
747
|
|
|
return Inline::evaluateBinaryScalar($data); |
|
748
|
|
|
} |
|
749
|
|
|
|
|
750
|
|
|
return new TaggedValue(substr($matches['tag'], 1), $data); |
|
751
|
|
|
} |
|
752
|
|
|
|
|
753
|
|
|
return $data; |
|
754
|
|
|
} |
|
755
|
|
|
|
|
756
|
|
|
try { |
|
757
|
|
|
if ('' !== $value && '{' === $value[0]) { |
|
758
|
|
|
$cursor = \strlen(rtrim($this->currentLine)) - \strlen(rtrim($value)); |
|
759
|
|
|
|
|
760
|
|
|
return Inline::parse($this->lexInlineMapping($cursor), $flags, $this->refs); |
|
761
|
|
|
} elseif ('' !== $value && '[' === $value[0]) { |
|
762
|
|
|
$cursor = \strlen(rtrim($this->currentLine)) - \strlen(rtrim($value)); |
|
763
|
|
|
|
|
764
|
|
|
return Inline::parse($this->lexInlineSequence($cursor), $flags, $this->refs); |
|
765
|
|
|
} |
|
766
|
|
|
|
|
767
|
|
|
switch ($value[0] ?? '') { |
|
768
|
|
|
case '"': |
|
769
|
|
|
case "'": |
|
770
|
|
|
$cursor = \strlen(rtrim($this->currentLine)) - \strlen(rtrim($value)); |
|
771
|
|
|
$parsedValue = Inline::parse($this->lexInlineQuotedString($cursor), $flags, $this->refs); |
|
772
|
|
|
|
|
773
|
|
|
if (isset($this->currentLine[$cursor]) && preg_replace('/\s*(#.*)?$/A', '', substr($this->currentLine, $cursor))) { |
|
774
|
|
|
throw new ParseException(sprintf('Unexpected characters near "%s".', substr($this->currentLine, $cursor))); |
|
775
|
|
|
} |
|
776
|
|
|
|
|
777
|
|
|
return $parsedValue; |
|
778
|
|
|
default: |
|
779
|
|
|
$lines = []; |
|
780
|
|
|
|
|
781
|
|
|
while ($this->moveToNextLine()) { |
|
782
|
|
|
// unquoted strings end before the first unindented line |
|
783
|
|
|
if (0 === $this->getCurrentLineIndentation()) { |
|
784
|
|
|
$this->moveToPreviousLine(); |
|
785
|
|
|
|
|
786
|
|
|
break; |
|
787
|
|
|
} |
|
788
|
|
|
|
|
789
|
|
|
$lines[] = trim($this->currentLine); |
|
790
|
|
|
} |
|
791
|
|
|
|
|
792
|
|
|
for ($i = 0, $linesCount = \count($lines), $previousLineBlank = false; $i < $linesCount; ++$i) { |
|
793
|
|
|
if ('' === $lines[$i]) { |
|
794
|
|
|
$value .= "\n"; |
|
795
|
|
|
$previousLineBlank = true; |
|
796
|
|
|
} elseif ($previousLineBlank) { |
|
797
|
|
|
$value .= $lines[$i]; |
|
798
|
|
|
$previousLineBlank = false; |
|
799
|
|
|
} else { |
|
800
|
|
|
$value .= ' '.$lines[$i]; |
|
801
|
|
|
$previousLineBlank = false; |
|
802
|
|
|
} |
|
803
|
|
|
} |
|
804
|
|
|
|
|
805
|
|
|
Inline::$parsedLineNumber = $this->getRealCurrentLineNb(); |
|
806
|
|
|
|
|
807
|
|
|
$parsedValue = Inline::parse($value, $flags, $this->refs); |
|
808
|
|
|
|
|
809
|
|
|
if ('mapping' === $context && \is_string($parsedValue) && '"' !== $value[0] && "'" !== $value[0] && '[' !== $value[0] && '{' !== $value[0] && '!' !== $value[0] && false !== strpos($parsedValue, ': ')) { |
|
810
|
|
|
throw new ParseException('A colon cannot be used in an unquoted mapping value.', $this->getRealCurrentLineNb() + 1, $value, $this->filename); |
|
811
|
|
|
} |
|
812
|
|
|
|
|
813
|
|
|
return $parsedValue; |
|
814
|
|
|
} |
|
815
|
|
|
} catch (ParseException $e) { |
|
816
|
|
|
$e->setParsedLine($this->getRealCurrentLineNb() + 1); |
|
817
|
|
|
$e->setSnippet($this->currentLine); |
|
818
|
|
|
|
|
819
|
|
|
throw $e; |
|
820
|
|
|
} |
|
821
|
|
|
} |
|
822
|
|
|
|
|
823
|
|
|
/** |
|
824
|
|
|
* Parses a block scalar. |
|
825
|
|
|
* |
|
826
|
|
|
* @param string $style The style indicator that was used to begin this block scalar (| or >) |
|
827
|
|
|
* @param string $chomping The chomping indicator that was used to begin this block scalar (+ or -) |
|
828
|
|
|
* @param int $indentation The indentation indicator that was used to begin this block scalar |
|
829
|
|
|
*/ |
|
830
|
|
|
private function parseBlockScalar(string $style, string $chomping = '', int $indentation = 0): string |
|
831
|
|
|
{ |
|
832
|
|
|
$notEOF = $this->moveToNextLine(); |
|
833
|
|
|
if (!$notEOF) { |
|
834
|
|
|
return ''; |
|
835
|
|
|
} |
|
836
|
|
|
|
|
837
|
|
|
$isCurrentLineBlank = $this->isCurrentLineBlank(); |
|
838
|
|
|
$blockLines = []; |
|
839
|
|
|
|
|
840
|
|
|
// leading blank lines are consumed before determining indentation |
|
841
|
|
|
while ($notEOF && $isCurrentLineBlank) { |
|
842
|
|
|
// newline only if not EOF |
|
843
|
|
|
if ($notEOF = $this->moveToNextLine()) { |
|
844
|
|
|
$blockLines[] = ''; |
|
845
|
|
|
$isCurrentLineBlank = $this->isCurrentLineBlank(); |
|
846
|
|
|
} |
|
847
|
|
|
} |
|
848
|
|
|
|
|
849
|
|
|
// determine indentation if not specified |
|
850
|
|
|
if (0 === $indentation) { |
|
851
|
|
|
$currentLineLength = \strlen($this->currentLine); |
|
852
|
|
|
|
|
853
|
|
|
for ($i = 0; $i < $currentLineLength && ' ' === $this->currentLine[$i]; ++$i) { |
|
854
|
|
|
++$indentation; |
|
855
|
|
|
} |
|
856
|
|
|
} |
|
857
|
|
|
|
|
858
|
|
|
if ($indentation > 0) { |
|
859
|
|
|
$pattern = sprintf('/^ {%d}(.*)$/', $indentation); |
|
860
|
|
|
|
|
861
|
|
|
while ( |
|
862
|
|
|
$notEOF && ( |
|
863
|
|
|
$isCurrentLineBlank || |
|
864
|
|
|
self::preg_match($pattern, $this->currentLine, $matches) |
|
865
|
|
|
) |
|
866
|
|
|
) { |
|
867
|
|
|
if ($isCurrentLineBlank && \strlen($this->currentLine) > $indentation) { |
|
868
|
|
|
$blockLines[] = substr($this->currentLine, $indentation); |
|
869
|
|
|
} elseif ($isCurrentLineBlank) { |
|
870
|
|
|
$blockLines[] = ''; |
|
871
|
|
|
} else { |
|
872
|
|
|
$blockLines[] = $matches[1]; |
|
|
|
|
|
|
873
|
|
|
} |
|
874
|
|
|
|
|
875
|
|
|
// newline only if not EOF |
|
876
|
|
|
if ($notEOF = $this->moveToNextLine()) { |
|
877
|
|
|
$isCurrentLineBlank = $this->isCurrentLineBlank(); |
|
878
|
|
|
} |
|
879
|
|
|
} |
|
880
|
|
|
} elseif ($notEOF) { |
|
881
|
|
|
$blockLines[] = ''; |
|
882
|
|
|
} |
|
883
|
|
|
|
|
884
|
|
|
if ($notEOF) { |
|
885
|
|
|
$blockLines[] = ''; |
|
886
|
|
|
$this->moveToPreviousLine(); |
|
887
|
|
|
} elseif (!$notEOF && !$this->isCurrentLineLastLineInDocument()) { |
|
888
|
|
|
$blockLines[] = ''; |
|
889
|
|
|
} |
|
890
|
|
|
|
|
891
|
|
|
// folded style |
|
892
|
|
|
if ('>' === $style) { |
|
893
|
|
|
$text = ''; |
|
894
|
|
|
$previousLineIndented = false; |
|
895
|
|
|
$previousLineBlank = false; |
|
896
|
|
|
|
|
897
|
|
|
for ($i = 0, $blockLinesCount = \count($blockLines); $i < $blockLinesCount; ++$i) { |
|
898
|
|
|
if ('' === $blockLines[$i]) { |
|
899
|
|
|
$text .= "\n"; |
|
900
|
|
|
$previousLineIndented = false; |
|
901
|
|
|
$previousLineBlank = true; |
|
902
|
|
|
} elseif (' ' === $blockLines[$i][0]) { |
|
903
|
|
|
$text .= "\n".$blockLines[$i]; |
|
904
|
|
|
$previousLineIndented = true; |
|
905
|
|
|
$previousLineBlank = false; |
|
906
|
|
|
} elseif ($previousLineIndented) { |
|
907
|
|
|
$text .= "\n".$blockLines[$i]; |
|
908
|
|
|
$previousLineIndented = false; |
|
909
|
|
|
$previousLineBlank = false; |
|
910
|
|
|
} elseif ($previousLineBlank || 0 === $i) { |
|
911
|
|
|
$text .= $blockLines[$i]; |
|
912
|
|
|
$previousLineIndented = false; |
|
913
|
|
|
$previousLineBlank = false; |
|
914
|
|
|
} else { |
|
915
|
|
|
$text .= ' '.$blockLines[$i]; |
|
916
|
|
|
$previousLineIndented = false; |
|
917
|
|
|
$previousLineBlank = false; |
|
918
|
|
|
} |
|
919
|
|
|
} |
|
920
|
|
|
} else { |
|
921
|
|
|
$text = implode("\n", $blockLines); |
|
922
|
|
|
} |
|
923
|
|
|
|
|
924
|
|
|
// deal with trailing newlines |
|
925
|
|
|
if ('' === $chomping) { |
|
926
|
|
|
$text = preg_replace('/\n+$/', "\n", $text); |
|
927
|
|
|
} elseif ('-' === $chomping) { |
|
928
|
|
|
$text = preg_replace('/\n+$/', '', $text); |
|
929
|
|
|
} |
|
930
|
|
|
|
|
931
|
|
|
return $text; |
|
932
|
|
|
} |
|
933
|
|
|
|
|
934
|
|
|
/** |
|
935
|
|
|
* Returns true if the next line is indented. |
|
936
|
|
|
*/ |
|
937
|
|
|
private function isNextLineIndented(): bool |
|
938
|
|
|
{ |
|
939
|
|
|
$currentIndentation = $this->getCurrentLineIndentation(); |
|
940
|
|
|
$movements = 0; |
|
941
|
|
|
|
|
942
|
|
|
do { |
|
943
|
|
|
$EOF = !$this->moveToNextLine(); |
|
944
|
|
|
|
|
945
|
|
|
if (!$EOF) { |
|
946
|
|
|
++$movements; |
|
947
|
|
|
} |
|
948
|
|
|
} while (!$EOF && ($this->isCurrentLineEmpty() || $this->isCurrentLineComment())); |
|
949
|
|
|
|
|
950
|
|
|
if ($EOF) { |
|
951
|
|
|
for ($i = 0; $i < $movements; ++$i) { |
|
952
|
|
|
$this->moveToPreviousLine(); |
|
953
|
|
|
} |
|
954
|
|
|
|
|
955
|
|
|
return false; |
|
956
|
|
|
} |
|
957
|
|
|
|
|
958
|
|
|
$ret = $this->getCurrentLineIndentation() > $currentIndentation; |
|
959
|
|
|
|
|
960
|
|
|
for ($i = 0; $i < $movements; ++$i) { |
|
961
|
|
|
$this->moveToPreviousLine(); |
|
962
|
|
|
} |
|
963
|
|
|
|
|
964
|
|
|
return $ret; |
|
965
|
|
|
} |
|
966
|
|
|
|
|
967
|
|
|
/** |
|
968
|
|
|
* Returns true if the current line is blank or if it is a comment line. |
|
969
|
|
|
*/ |
|
970
|
|
|
private function isCurrentLineEmpty(): bool |
|
971
|
|
|
{ |
|
972
|
|
|
return $this->isCurrentLineBlank() || $this->isCurrentLineComment(); |
|
973
|
|
|
} |
|
974
|
|
|
|
|
975
|
|
|
/** |
|
976
|
|
|
* Returns true if the current line is blank. |
|
977
|
|
|
*/ |
|
978
|
|
|
private function isCurrentLineBlank(): bool |
|
979
|
|
|
{ |
|
980
|
|
|
return '' === $this->currentLine || '' === trim($this->currentLine, ' '); |
|
981
|
|
|
} |
|
982
|
|
|
|
|
983
|
|
|
/** |
|
984
|
|
|
* Returns true if the current line is a comment line. |
|
985
|
|
|
*/ |
|
986
|
|
|
private function isCurrentLineComment(): bool |
|
987
|
|
|
{ |
|
988
|
|
|
// checking explicitly the first char of the trim is faster than loops or strpos |
|
989
|
|
|
$ltrimmedLine = '' !== $this->currentLine && ' ' === $this->currentLine[0] ? ltrim($this->currentLine, ' ') : $this->currentLine; |
|
990
|
|
|
|
|
991
|
|
|
return '' !== $ltrimmedLine && '#' === $ltrimmedLine[0]; |
|
992
|
|
|
} |
|
993
|
|
|
|
|
994
|
|
|
private function isCurrentLineLastLineInDocument(): bool |
|
995
|
|
|
{ |
|
996
|
|
|
return ($this->offset + $this->currentLineNb) >= ($this->totalNumberOfLines - 1); |
|
997
|
|
|
} |
|
998
|
|
|
|
|
999
|
|
|
/** |
|
1000
|
|
|
* Cleanups a YAML string to be parsed. |
|
1001
|
|
|
* |
|
1002
|
|
|
* @param string $value The input YAML string |
|
1003
|
|
|
*/ |
|
1004
|
|
|
private function cleanup(string $value): string |
|
1005
|
|
|
{ |
|
1006
|
|
|
$value = str_replace(["\r\n", "\r"], "\n", $value); |
|
1007
|
|
|
|
|
1008
|
|
|
// strip YAML header |
|
1009
|
|
|
$count = 0; |
|
1010
|
|
|
$value = preg_replace('#^\%YAML[: ][\d\.]+.*\n#u', '', $value, -1, $count); |
|
1011
|
|
|
$this->offset += $count; |
|
1012
|
|
|
|
|
1013
|
|
|
// remove leading comments |
|
1014
|
|
|
$trimmedValue = preg_replace('#^(\#.*?\n)+#s', '', $value, -1, $count); |
|
1015
|
|
|
if (1 === $count) { |
|
1016
|
|
|
// items have been removed, update the offset |
|
1017
|
|
|
$this->offset += substr_count($value, "\n") - substr_count($trimmedValue, "\n"); |
|
1018
|
|
|
$value = $trimmedValue; |
|
1019
|
|
|
} |
|
1020
|
|
|
|
|
1021
|
|
|
// remove start of the document marker (---) |
|
1022
|
|
|
$trimmedValue = preg_replace('#^\-\-\-.*?\n#s', '', $value, -1, $count); |
|
1023
|
|
|
if (1 === $count) { |
|
1024
|
|
|
// items have been removed, update the offset |
|
1025
|
|
|
$this->offset += substr_count($value, "\n") - substr_count($trimmedValue, "\n"); |
|
1026
|
|
|
$value = $trimmedValue; |
|
1027
|
|
|
|
|
1028
|
|
|
// remove end of the document marker (...) |
|
1029
|
|
|
$value = preg_replace('#\.\.\.\s*$#', '', $value); |
|
1030
|
|
|
} |
|
1031
|
|
|
|
|
1032
|
|
|
return $value; |
|
1033
|
|
|
} |
|
1034
|
|
|
|
|
1035
|
|
|
/** |
|
1036
|
|
|
* Returns true if the next line starts unindented collection. |
|
1037
|
|
|
*/ |
|
1038
|
|
|
private function isNextLineUnIndentedCollection(): bool |
|
1039
|
|
|
{ |
|
1040
|
|
|
$currentIndentation = $this->getCurrentLineIndentation(); |
|
1041
|
|
|
$movements = 0; |
|
1042
|
|
|
|
|
1043
|
|
|
do { |
|
1044
|
|
|
$EOF = !$this->moveToNextLine(); |
|
1045
|
|
|
|
|
1046
|
|
|
if (!$EOF) { |
|
1047
|
|
|
++$movements; |
|
1048
|
|
|
} |
|
1049
|
|
|
} while (!$EOF && ($this->isCurrentLineEmpty() || $this->isCurrentLineComment())); |
|
1050
|
|
|
|
|
1051
|
|
|
if ($EOF) { |
|
1052
|
|
|
return false; |
|
1053
|
|
|
} |
|
1054
|
|
|
|
|
1055
|
|
|
$ret = $this->getCurrentLineIndentation() === $currentIndentation && $this->isStringUnIndentedCollectionItem(); |
|
1056
|
|
|
|
|
1057
|
|
|
for ($i = 0; $i < $movements; ++$i) { |
|
1058
|
|
|
$this->moveToPreviousLine(); |
|
1059
|
|
|
} |
|
1060
|
|
|
|
|
1061
|
|
|
return $ret; |
|
1062
|
|
|
} |
|
1063
|
|
|
|
|
1064
|
|
|
/** |
|
1065
|
|
|
* Returns true if the string is un-indented collection item. |
|
1066
|
|
|
*/ |
|
1067
|
|
|
private function isStringUnIndentedCollectionItem(): bool |
|
1068
|
|
|
{ |
|
1069
|
|
|
return '-' === rtrim($this->currentLine) || 0 === strpos($this->currentLine, '- '); |
|
1070
|
|
|
} |
|
1071
|
|
|
|
|
1072
|
|
|
/** |
|
1073
|
|
|
* A local wrapper for "preg_match" which will throw a ParseException if there |
|
1074
|
|
|
* is an internal error in the PCRE engine. |
|
1075
|
|
|
* |
|
1076
|
|
|
* This avoids us needing to check for "false" every time PCRE is used |
|
1077
|
|
|
* in the YAML engine |
|
1078
|
|
|
* |
|
1079
|
|
|
* @throws ParseException on a PCRE internal error |
|
1080
|
|
|
* |
|
1081
|
|
|
* @see preg_last_error() |
|
1082
|
|
|
* |
|
1083
|
|
|
* @internal |
|
1084
|
|
|
*/ |
|
1085
|
|
|
public static function preg_match(string $pattern, string $subject, ?array &$matches = null, int $flags = 0, int $offset = 0): int |
|
1086
|
|
|
{ |
|
1087
|
|
|
if (false === $ret = preg_match($pattern, $subject, $matches, $flags, $offset)) { |
|
1088
|
|
|
switch (preg_last_error()) { |
|
1089
|
|
|
case \PREG_INTERNAL_ERROR: |
|
1090
|
|
|
$error = 'Internal PCRE error.'; |
|
1091
|
|
|
break; |
|
1092
|
|
|
case \PREG_BACKTRACK_LIMIT_ERROR: |
|
1093
|
|
|
$error = 'pcre.backtrack_limit reached.'; |
|
1094
|
|
|
break; |
|
1095
|
|
|
case \PREG_RECURSION_LIMIT_ERROR: |
|
1096
|
|
|
$error = 'pcre.recursion_limit reached.'; |
|
1097
|
|
|
break; |
|
1098
|
|
|
case \PREG_BAD_UTF8_ERROR: |
|
1099
|
|
|
$error = 'Malformed UTF-8 data.'; |
|
1100
|
|
|
break; |
|
1101
|
|
|
case \PREG_BAD_UTF8_OFFSET_ERROR: |
|
1102
|
|
|
$error = 'Offset doesn\'t correspond to the begin of a valid UTF-8 code point.'; |
|
1103
|
|
|
break; |
|
1104
|
|
|
default: |
|
1105
|
|
|
$error = 'Error.'; |
|
1106
|
|
|
} |
|
1107
|
|
|
|
|
1108
|
|
|
throw new ParseException($error); |
|
1109
|
|
|
} |
|
1110
|
|
|
|
|
1111
|
|
|
return $ret; |
|
1112
|
|
|
} |
|
1113
|
|
|
|
|
1114
|
|
|
/** |
|
1115
|
|
|
* Trim the tag on top of the value. |
|
1116
|
|
|
* |
|
1117
|
|
|
* Prevent values such as "!foo {quz: bar}" to be considered as |
|
1118
|
|
|
* a mapping block. |
|
1119
|
|
|
*/ |
|
1120
|
|
|
private function trimTag(string $value): string |
|
1121
|
|
|
{ |
|
1122
|
|
|
if ('!' === $value[0]) { |
|
1123
|
|
|
return ltrim(substr($value, 1, strcspn($value, " \r\n", 1)), ' '); |
|
1124
|
|
|
} |
|
1125
|
|
|
|
|
1126
|
|
|
return $value; |
|
1127
|
|
|
} |
|
1128
|
|
|
|
|
1129
|
|
|
private function getLineTag(string $value, int $flags, bool $nextLineCheck = true): ?string |
|
1130
|
|
|
{ |
|
1131
|
|
|
if ('' === $value || '!' !== $value[0] || 1 !== self::preg_match('/^'.self::TAG_PATTERN.' *( +#.*)?$/', $value, $matches)) { |
|
1132
|
|
|
return null; |
|
1133
|
|
|
} |
|
1134
|
|
|
|
|
1135
|
|
|
if ($nextLineCheck && !$this->isNextLineIndented()) { |
|
1136
|
|
|
return null; |
|
1137
|
|
|
} |
|
1138
|
|
|
|
|
1139
|
|
|
$tag = substr($matches['tag'], 1); |
|
1140
|
|
|
|
|
1141
|
|
|
// Built-in tags |
|
1142
|
|
|
if ($tag && '!' === $tag[0]) { |
|
1143
|
|
|
throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), $this->getRealCurrentLineNb() + 1, $value, $this->filename); |
|
1144
|
|
|
} |
|
1145
|
|
|
|
|
1146
|
|
|
if (Yaml::PARSE_CUSTOM_TAGS & $flags) { |
|
1147
|
|
|
return $tag; |
|
1148
|
|
|
} |
|
1149
|
|
|
|
|
1150
|
|
|
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, $this->filename); |
|
1151
|
|
|
} |
|
1152
|
|
|
|
|
1153
|
|
|
private function lexInlineQuotedString(int &$cursor = 0): string |
|
1154
|
|
|
{ |
|
1155
|
|
|
$quotation = $this->currentLine[$cursor]; |
|
1156
|
|
|
$value = $quotation; |
|
1157
|
|
|
++$cursor; |
|
1158
|
|
|
|
|
1159
|
|
|
$previousLineWasNewline = true; |
|
1160
|
|
|
$previousLineWasTerminatedWithBackslash = false; |
|
1161
|
|
|
$lineNumber = 0; |
|
1162
|
|
|
|
|
1163
|
|
|
do { |
|
1164
|
|
|
if (++$lineNumber > 1) { |
|
1165
|
|
|
$cursor += strspn($this->currentLine, ' ', $cursor); |
|
1166
|
|
|
} |
|
1167
|
|
|
|
|
1168
|
|
|
if ($this->isCurrentLineBlank()) { |
|
1169
|
|
|
$value .= "\n"; |
|
1170
|
|
|
} elseif (!$previousLineWasNewline && !$previousLineWasTerminatedWithBackslash) { |
|
1171
|
|
|
$value .= ' '; |
|
1172
|
|
|
} |
|
1173
|
|
|
|
|
1174
|
|
|
for (; \strlen($this->currentLine) > $cursor; ++$cursor) { |
|
1175
|
|
|
switch ($this->currentLine[$cursor]) { |
|
1176
|
|
|
case '\\': |
|
1177
|
|
|
if ("'" === $quotation) { |
|
1178
|
|
|
$value .= '\\'; |
|
1179
|
|
|
} elseif (isset($this->currentLine[++$cursor])) { |
|
1180
|
|
|
$value .= '\\'.$this->currentLine[$cursor]; |
|
1181
|
|
|
} |
|
1182
|
|
|
|
|
1183
|
|
|
break; |
|
1184
|
|
|
case $quotation: |
|
1185
|
|
|
++$cursor; |
|
1186
|
|
|
|
|
1187
|
|
|
if ("'" === $quotation && isset($this->currentLine[$cursor]) && "'" === $this->currentLine[$cursor]) { |
|
1188
|
|
|
$value .= "''"; |
|
1189
|
|
|
break; |
|
1190
|
|
|
} |
|
1191
|
|
|
|
|
1192
|
|
|
return $value.$quotation; |
|
1193
|
|
|
default: |
|
1194
|
|
|
$value .= $this->currentLine[$cursor]; |
|
1195
|
|
|
} |
|
1196
|
|
|
} |
|
1197
|
|
|
|
|
1198
|
|
|
if ($this->isCurrentLineBlank()) { |
|
1199
|
|
|
$previousLineWasNewline = true; |
|
1200
|
|
|
$previousLineWasTerminatedWithBackslash = false; |
|
1201
|
|
|
} elseif ('\\' === $this->currentLine[-1]) { |
|
1202
|
|
|
$previousLineWasNewline = false; |
|
1203
|
|
|
$previousLineWasTerminatedWithBackslash = true; |
|
1204
|
|
|
} else { |
|
1205
|
|
|
$previousLineWasNewline = false; |
|
1206
|
|
|
$previousLineWasTerminatedWithBackslash = false; |
|
1207
|
|
|
} |
|
1208
|
|
|
|
|
1209
|
|
|
if ($this->hasMoreLines()) { |
|
1210
|
|
|
$cursor = 0; |
|
1211
|
|
|
} |
|
1212
|
|
|
} while ($this->moveToNextLine()); |
|
1213
|
|
|
|
|
1214
|
|
|
throw new ParseException('Malformed inline YAML string.'); |
|
1215
|
|
|
} |
|
1216
|
|
|
|
|
1217
|
|
|
private function lexUnquotedString(int &$cursor): string |
|
1218
|
|
|
{ |
|
1219
|
|
|
$offset = $cursor; |
|
1220
|
|
|
$cursor += strcspn($this->currentLine, '[]{},: ', $cursor); |
|
1221
|
|
|
|
|
1222
|
|
|
if ($cursor === $offset) { |
|
1223
|
|
|
throw new ParseException('Malformed unquoted YAML string.'); |
|
1224
|
|
|
} |
|
1225
|
|
|
|
|
1226
|
|
|
return substr($this->currentLine, $offset, $cursor - $offset); |
|
1227
|
|
|
} |
|
1228
|
|
|
|
|
1229
|
|
|
private function lexInlineMapping(int &$cursor = 0): string |
|
1230
|
|
|
{ |
|
1231
|
|
|
return $this->lexInlineStructure($cursor, '}'); |
|
1232
|
|
|
} |
|
1233
|
|
|
|
|
1234
|
|
|
private function lexInlineSequence(int &$cursor = 0): string |
|
1235
|
|
|
{ |
|
1236
|
|
|
return $this->lexInlineStructure($cursor, ']'); |
|
1237
|
|
|
} |
|
1238
|
|
|
|
|
1239
|
|
|
private function lexInlineStructure(int &$cursor, string $closingTag): string |
|
1240
|
|
|
{ |
|
1241
|
|
|
$value = $this->currentLine[$cursor]; |
|
1242
|
|
|
++$cursor; |
|
1243
|
|
|
|
|
1244
|
|
|
do { |
|
1245
|
|
|
$this->consumeWhitespaces($cursor); |
|
1246
|
|
|
|
|
1247
|
|
|
while (isset($this->currentLine[$cursor])) { |
|
1248
|
|
|
switch ($this->currentLine[$cursor]) { |
|
1249
|
|
|
case '"': |
|
1250
|
|
|
case "'": |
|
1251
|
|
|
$value .= $this->lexInlineQuotedString($cursor); |
|
1252
|
|
|
break; |
|
1253
|
|
|
case ':': |
|
1254
|
|
|
case ',': |
|
1255
|
|
|
$value .= $this->currentLine[$cursor]; |
|
1256
|
|
|
++$cursor; |
|
1257
|
|
|
break; |
|
1258
|
|
|
case '{': |
|
1259
|
|
|
$value .= $this->lexInlineMapping($cursor); |
|
1260
|
|
|
break; |
|
1261
|
|
|
case '[': |
|
1262
|
|
|
$value .= $this->lexInlineSequence($cursor); |
|
1263
|
|
|
break; |
|
1264
|
|
|
case $closingTag: |
|
1265
|
|
|
$value .= $this->currentLine[$cursor]; |
|
1266
|
|
|
++$cursor; |
|
1267
|
|
|
|
|
1268
|
|
|
return $value; |
|
1269
|
|
|
case '#': |
|
1270
|
|
|
break 2; |
|
1271
|
|
|
default: |
|
1272
|
|
|
$value .= $this->lexUnquotedString($cursor); |
|
1273
|
|
|
} |
|
1274
|
|
|
|
|
1275
|
|
|
if ($this->consumeWhitespaces($cursor)) { |
|
1276
|
|
|
$value .= ' '; |
|
1277
|
|
|
} |
|
1278
|
|
|
} |
|
1279
|
|
|
|
|
1280
|
|
|
if ($this->hasMoreLines()) { |
|
1281
|
|
|
$cursor = 0; |
|
1282
|
|
|
} |
|
1283
|
|
|
} while ($this->moveToNextLine()); |
|
1284
|
|
|
|
|
1285
|
|
|
throw new ParseException('Malformed inline YAML string.'); |
|
1286
|
|
|
} |
|
1287
|
|
|
|
|
1288
|
|
|
private function consumeWhitespaces(int &$cursor): bool |
|
1289
|
|
|
{ |
|
1290
|
|
|
$whitespacesConsumed = 0; |
|
1291
|
|
|
|
|
1292
|
|
|
do { |
|
1293
|
|
|
$whitespaceOnlyTokenLength = strspn($this->currentLine, ' ', $cursor); |
|
1294
|
|
|
$whitespacesConsumed += $whitespaceOnlyTokenLength; |
|
1295
|
|
|
$cursor += $whitespaceOnlyTokenLength; |
|
1296
|
|
|
|
|
1297
|
|
|
if (isset($this->currentLine[$cursor])) { |
|
1298
|
|
|
return 0 < $whitespacesConsumed; |
|
1299
|
|
|
} |
|
1300
|
|
|
|
|
1301
|
|
|
if ($this->hasMoreLines()) { |
|
1302
|
|
|
$cursor = 0; |
|
1303
|
|
|
} |
|
1304
|
|
|
} while ($this->moveToNextLine()); |
|
1305
|
|
|
|
|
1306
|
|
|
return 0 < $whitespacesConsumed; |
|
1307
|
|
|
} |
|
1308
|
|
|
} |
|
1309
|
|
|
|
XOOPS /
XoopsCore25
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