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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Component\Yaml;
- use Symfony\Component\Yaml\Exception\DumpException;
- use Symfony\Component\Yaml\Exception\ParseException;
- use Symfony\Component\Yaml\Tag\TaggedValue;
- /**
- * Inline implements a YAML parser/dumper for the YAML inline syntax.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @internal
- */
- class Inline
- {
- public const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
- public static $parsedLineNumber = -1;
- public static $parsedFilename;
- private static $exceptionOnInvalidType = false;
- private static $objectSupport = false;
- private static $objectForMap = false;
- private static $constantSupport = false;
- public static function initialize(int $flags, int $parsedLineNumber = null, string $parsedFilename = null)
- {
- self::$exceptionOnInvalidType = (bool) (Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE & $flags);
- self::$objectSupport = (bool) (Yaml::PARSE_OBJECT & $flags);
- self::$objectForMap = (bool) (Yaml::PARSE_OBJECT_FOR_MAP & $flags);
- self::$constantSupport = (bool) (Yaml::PARSE_CONSTANT & $flags);
- self::$parsedFilename = $parsedFilename;
- if (null !== $parsedLineNumber) {
- self::$parsedLineNumber = $parsedLineNumber;
- }
- }
- /**
- * Converts a YAML string to a PHP value.
- *
- * @param string $value A YAML string
- * @param int $flags A bit field of PARSE_* constants to customize the YAML parser behavior
- * @param array $references Mapping of variable names to values
- *
- * @return mixed A PHP value
- *
- * @throws ParseException
- */
- public static function parse(string $value = null, int $flags = 0, array $references = [])
- {
- self::initialize($flags);
- $value = trim($value);
- if ('' === $value) {
- return '';
- }
- if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
- $mbEncoding = mb_internal_encoding();
- mb_internal_encoding('ASCII');
- }
- try {
- $i = 0;
- $tag = self::parseTag($value, $i, $flags);
- switch ($value[$i]) {
- case '[':
- $result = self::parseSequence($value, $flags, $i, $references);
- ++$i;
- break;
- case '{':
- $result = self::parseMapping($value, $flags, $i, $references);
- ++$i;
- break;
- default:
- $result = self::parseScalar($value, $flags, null, $i, null === $tag, $references);
- }
- // some comments are allowed at the end
- if (preg_replace('/\s*#.*$/A', '', substr($value, $i))) {
- throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- if (null !== $tag && '' !== $tag) {
- return new TaggedValue($tag, $result);
- }
- return $result;
- } finally {
- if (isset($mbEncoding)) {
- mb_internal_encoding($mbEncoding);
- }
- }
- }
- /**
- * Dumps a given PHP variable to a YAML string.
- *
- * @param mixed $value The PHP variable to convert
- * @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
- *
- * @return string The YAML string representing the PHP value
- *
- * @throws DumpException When trying to dump PHP resource
- */
- public static function dump($value, int $flags = 0): string
- {
- switch (true) {
- case \is_resource($value):
- if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
- throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
- }
- return self::dumpNull($flags);
- case $value instanceof \DateTimeInterface:
- return $value->format('c');
- case \is_object($value):
- if ($value instanceof TaggedValue) {
- return '!'.$value->getTag().' '.self::dump($value->getValue(), $flags);
- }
- if (Yaml::DUMP_OBJECT & $flags) {
- return '!php/object '.self::dump(serialize($value));
- }
- if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \stdClass || $value instanceof \ArrayObject)) {
- $output = [];
- foreach ($value as $key => $val) {
- $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
- }
- return sprintf('{ %s }', implode(', ', $output));
- }
- if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
- throw new DumpException('Object support when dumping a YAML file has been disabled.');
- }
- return self::dumpNull($flags);
- case \is_array($value):
- return self::dumpArray($value, $flags);
- case null === $value:
- return self::dumpNull($flags);
- case true === $value:
- return 'true';
- case false === $value:
- return 'false';
- case ctype_digit($value):
- return \is_string($value) ? "'$value'" : (int) $value;
- case is_numeric($value) && false === strpos($value, "\f") && false === strpos($value, "\n") && false === strpos($value, "\r") && false === strpos($value, "\t") && false === strpos($value, "\v"):
- $locale = setlocale(\LC_NUMERIC, 0);
- if (false !== $locale) {
- setlocale(\LC_NUMERIC, 'C');
- }
- if (\is_float($value)) {
- $repr = (string) $value;
- if (is_infinite($value)) {
- $repr = str_ireplace('INF', '.Inf', $repr);
- } elseif (floor($value) == $value && $repr == $value) {
- // Preserve float data type since storing a whole number will result in integer value.
- $repr = '!!float '.$repr;
- }
- } else {
- $repr = \is_string($value) ? "'$value'" : (string) $value;
- }
- if (false !== $locale) {
- setlocale(\LC_NUMERIC, $locale);
- }
- return $repr;
- case '' == $value:
- return "''";
- case self::isBinaryString($value):
- return '!!binary '.base64_encode($value);
- case Escaper::requiresDoubleQuoting($value):
- return Escaper::escapeWithDoubleQuotes($value);
- case Escaper::requiresSingleQuoting($value):
- case Parser::preg_match('{^[0-9]+[_0-9]*$}', $value):
- case Parser::preg_match(self::getHexRegex(), $value):
- case Parser::preg_match(self::getTimestampRegex(), $value):
- return Escaper::escapeWithSingleQuotes($value);
- default:
- return $value;
- }
- }
- /**
- * Check if given array is hash or just normal indexed array.
- *
- * @param array|\ArrayObject|\stdClass $value The PHP array or array-like object to check
- *
- * @return bool true if value is hash array, false otherwise
- */
- public static function isHash($value): bool
- {
- if ($value instanceof \stdClass || $value instanceof \ArrayObject) {
- return true;
- }
- $expectedKey = 0;
- foreach ($value as $key => $val) {
- if ($key !== $expectedKey++) {
- return true;
- }
- }
- return false;
- }
- /**
- * Dumps a PHP array to a YAML string.
- *
- * @param array $value The PHP array to dump
- * @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
- *
- * @return string The YAML string representing the PHP array
- */
- private static function dumpArray(array $value, int $flags): string
- {
- // array
- if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
- $output = [];
- foreach ($value as $val) {
- $output[] = self::dump($val, $flags);
- }
- return sprintf('[%s]', implode(', ', $output));
- }
- // hash
- $output = [];
- foreach ($value as $key => $val) {
- $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
- }
- return sprintf('{ %s }', implode(', ', $output));
- }
- private static function dumpNull(int $flags): string
- {
- if (Yaml::DUMP_NULL_AS_TILDE & $flags) {
- return '~';
- }
- return 'null';
- }
- /**
- * Parses a YAML scalar.
- *
- * @return mixed
- *
- * @throws ParseException When malformed inline YAML string is parsed
- */
- public static function parseScalar(string $scalar, int $flags = 0, array $delimiters = null, int &$i = 0, bool $evaluate = true, array $references = [])
- {
- if (\in_array($scalar[$i], ['"', "'"], true)) {
- // quoted scalar
- $output = self::parseQuotedScalar($scalar, $i);
- if (null !== $delimiters) {
- $tmp = ltrim(substr($scalar, $i), " \n");
- if ('' === $tmp) {
- throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode('', $delimiters)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- if (!\in_array($tmp[0], $delimiters)) {
- throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- }
- } else {
- // "normal" string
- if (!$delimiters) {
- $output = substr($scalar, $i);
- $i += \strlen($output);
- // remove comments
- if (Parser::preg_match('/[ \t]+#/', $output, $match, \PREG_OFFSET_CAPTURE)) {
- $output = substr($output, 0, $match[0][1]);
- }
- } elseif (Parser::preg_match('/^(.*?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
- $output = $match[1];
- $i += \strlen($output);
- $output = trim($output);
- } else {
- throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
- }
- // a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
- if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0] || '%' === $output[0])) {
- throw new ParseException(sprintf('The reserved indicator "%s" cannot start a plain scalar; you need to quote the scalar.', $output[0]), self::$parsedLineNumber + 1, $output, self::$parsedFilename);
- }
- if ($evaluate) {
- $output = self::evaluateScalar($output, $flags, $references);
- }
- }
- return $output;
- }
- /**
- * Parses a YAML quoted scalar.
- *
- * @throws ParseException When malformed inline YAML string is parsed
- */
- private static function parseQuotedScalar(string $scalar, int &$i): string
- {
- if (!Parser::preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) {
- throw new ParseException(sprintf('Malformed inline YAML string: "%s".', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- $output = substr($match[0], 1, -1);
- $unescaper = new Unescaper();
- if ('"' == $scalar[$i]) {
- $output = $unescaper->unescapeDoubleQuotedString($output);
- } else {
- $output = $unescaper->unescapeSingleQuotedString($output);
- }
- $i += \strlen($match[0]);
- return $output;
- }
- /**
- * Parses a YAML sequence.
- *
- * @throws ParseException When malformed inline YAML string is parsed
- */
- private static function parseSequence(string $sequence, int $flags, int &$i = 0, array $references = []): array
- {
- $output = [];
- $len = \strlen($sequence);
- ++$i;
- // [foo, bar, ...]
- while ($i < $len) {
- if (']' === $sequence[$i]) {
- return $output;
- }
- if (',' === $sequence[$i] || ' ' === $sequence[$i]) {
- ++$i;
- continue;
- }
- $tag = self::parseTag($sequence, $i, $flags);
- switch ($sequence[$i]) {
- case '[':
- // nested sequence
- $value = self::parseSequence($sequence, $flags, $i, $references);
- break;
- case '{':
- // nested mapping
- $value = self::parseMapping($sequence, $flags, $i, $references);
- break;
- default:
- $isQuoted = \in_array($sequence[$i], ['"', "'"], true);
- $value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references);
- // the value can be an array if a reference has been resolved to an array var
- if (\is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
- // embedded mapping?
- try {
- $pos = 0;
- $value = self::parseMapping('{'.$value.'}', $flags, $pos, $references);
- } catch (\InvalidArgumentException $e) {
- // no, it's not
- }
- }
- --$i;
- }
- if (null !== $tag && '' !== $tag) {
- $value = new TaggedValue($tag, $value);
- }
- $output[] = $value;
- ++$i;
- }
- throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $sequence), self::$parsedLineNumber + 1, null, self::$parsedFilename);
- }
- /**
- * Parses a YAML mapping.
- *
- * @return array|\stdClass
- *
- * @throws ParseException When malformed inline YAML string is parsed
- */
- private static function parseMapping(string $mapping, int $flags, int &$i = 0, array $references = [])
- {
- $output = [];
- $len = \strlen($mapping);
- ++$i;
- $allowOverwrite = false;
- // {foo: bar, bar:foo, ...}
- while ($i < $len) {
- switch ($mapping[$i]) {
- case ' ':
- case ',':
- case "\n":
- ++$i;
- continue 2;
- case '}':
- if (self::$objectForMap) {
- return (object) $output;
- }
- return $output;
- }
- // key
- $offsetBeforeKeyParsing = $i;
- $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
- $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, []);
- if ($offsetBeforeKeyParsing === $i) {
- throw new ParseException('Missing mapping key.', self::$parsedLineNumber + 1, $mapping);
- }
- if ('!php/const' === $key) {
- $key .= ' '.self::parseScalar($mapping, $flags, [':'], $i, false, []);
- $key = self::evaluateScalar($key, $flags);
- }
- if (false === $i = strpos($mapping, ':', $i)) {
- break;
- }
- if (!$isKeyQuoted) {
- $evaluatedKey = self::evaluateScalar($key, $flags, $references);
- if ('' !== $key && $evaluatedKey !== $key && !\is_string($evaluatedKey) && !\is_int($evaluatedKey)) {
- throw new ParseException('Implicit casting of incompatible mapping keys to strings is not supported. Quote your evaluable mapping keys instead.', self::$parsedLineNumber + 1, $mapping);
- }
- }
- if (!$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}', "\n"], true))) {
- throw new ParseException('Colons must be followed by a space or an indication character (i.e. " ", ",", "[", "]", "{", "}").', self::$parsedLineNumber + 1, $mapping);
- }
- if ('<<' === $key) {
- $allowOverwrite = true;
- }
- while ($i < $len) {
- if (':' === $mapping[$i] || ' ' === $mapping[$i] || "\n" === $mapping[$i]) {
- ++$i;
- continue;
- }
- $tag = self::parseTag($mapping, $i, $flags);
- switch ($mapping[$i]) {
- case '[':
- // nested sequence
- $value = self::parseSequence($mapping, $flags, $i, $references);
- // Spec: Keys MUST be unique; first one wins.
- // Parser cannot abort this mapping earlier, since lines
- // are processed sequentially.
- // But overwriting is allowed when a merge node is used in current block.
- if ('<<' === $key) {
- foreach ($value as $parsedValue) {
- $output += $parsedValue;
- }
- } elseif ($allowOverwrite || !isset($output[$key])) {
- if (null !== $tag) {
- $output[$key] = new TaggedValue($tag, $value);
- } else {
- $output[$key] = $value;
- }
- } elseif (isset($output[$key])) {
- throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), self::$parsedLineNumber + 1, $mapping);
- }
- break;
- case '{':
- // nested mapping
- $value = self::parseMapping($mapping, $flags, $i, $references);
- // Spec: Keys MUST be unique; first one wins.
- // Parser cannot abort this mapping earlier, since lines
- // are processed sequentially.
- // But overwriting is allowed when a merge node is used in current block.
- if ('<<' === $key) {
- $output += $value;
- } elseif ($allowOverwrite || !isset($output[$key])) {
- if (null !== $tag) {
- $output[$key] = new TaggedValue($tag, $value);
- } else {
- $output[$key] = $value;
- }
- } elseif (isset($output[$key])) {
- throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), self::$parsedLineNumber + 1, $mapping);
- }
- break;
- default:
- $value = self::parseScalar($mapping, $flags, [',', '}', "\n"], $i, null === $tag, $references);
- // Spec: Keys MUST be unique; first one wins.
- // Parser cannot abort this mapping earlier, since lines
- // are processed sequentially.
- // But overwriting is allowed when a merge node is used in current block.
- if ('<<' === $key) {
- $output += $value;
- } elseif ($allowOverwrite || !isset($output[$key])) {
- if (null !== $tag) {
- $output[$key] = new TaggedValue($tag, $value);
- } else {
- $output[$key] = $value;
- }
- } elseif (isset($output[$key])) {
- throw new ParseException(sprintf('Duplicate key "%s" detected.', $key), self::$parsedLineNumber + 1, $mapping);
- }
- --$i;
- }
- ++$i;
- continue 2;
- }
- }
- throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $mapping), self::$parsedLineNumber + 1, null, self::$parsedFilename);
- }
- /**
- * Evaluates scalars and replaces magic values.
- *
- * @return mixed The evaluated YAML string
- *
- * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
- */
- private static function evaluateScalar(string $scalar, int $flags, array $references = [])
- {
- $scalar = trim($scalar);
- if ('*' === ($scalar[0] ?? '')) {
- if (false !== $pos = strpos($scalar, '#')) {
- $value = substr($scalar, 1, $pos - 2);
- } else {
- $value = substr($scalar, 1);
- }
- // an unquoted *
- if (false === $value || '' === $value) {
- throw new ParseException('A reference must contain at least one character.', self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- if (!\array_key_exists($value, $references)) {
- throw new ParseException(sprintf('Reference "%s" does not exist.', $value), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- return $references[$value];
- }
- $scalarLower = strtolower($scalar);
- switch (true) {
- case 'null' === $scalarLower:
- case '' === $scalar:
- case '~' === $scalar:
- return null;
- case 'true' === $scalarLower:
- return true;
- case 'false' === $scalarLower:
- return false;
- case '!' === $scalar[0]:
- switch (true) {
- case 0 === strncmp($scalar, '!!str ', 6):
- return (string) substr($scalar, 6);
- case 0 === strncmp($scalar, '! ', 2):
- return substr($scalar, 2);
- case 0 === strncmp($scalar, '!php/object', 11):
- if (self::$objectSupport) {
- if (!isset($scalar[12])) {
- trigger_deprecation('symfony/yaml', '5.1', 'Using the !php/object tag without a value is deprecated.');
- return false;
- }
- return unserialize(self::parseScalar(substr($scalar, 12)));
- }
- if (self::$exceptionOnInvalidType) {
- throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- return null;
- case 0 === strncmp($scalar, '!php/const', 10):
- if (self::$constantSupport) {
- if (!isset($scalar[11])) {
- trigger_deprecation('symfony/yaml', '5.1', 'Using the !php/const tag without a value is deprecated.');
- return '';
- }
- $i = 0;
- if (\defined($const = self::parseScalar(substr($scalar, 11), 0, null, $i, false))) {
- return \constant($const);
- }
- throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- if (self::$exceptionOnInvalidType) {
- throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Did you forget to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- return null;
- case 0 === strncmp($scalar, '!!float ', 8):
- return (float) substr($scalar, 8);
- case 0 === strncmp($scalar, '!!binary ', 9):
- return self::evaluateBinaryScalar(substr($scalar, 9));
- default:
- throw new ParseException(sprintf('The string "%s" could not be parsed as it uses an unsupported built-in tag.', $scalar), self::$parsedLineNumber, $scalar, self::$parsedFilename);
- }
- // no break
- case preg_match('/^(?:\+|-)?0o(?P<value>[0-7_]++)$/', $scalar, $matches):
- $value = str_replace('_', '', $matches['value']);
- if ('-' === $scalar[0]) {
- return -octdec($value);
- } else {
- return octdec($value);
- }
- // Optimize for returning strings.
- // no break
- case \in_array($scalar[0], ['+', '-', '.'], true) || is_numeric($scalar[0]):
- if (Parser::preg_match('{^[+-]?[0-9][0-9_]*$}', $scalar)) {
- $scalar = str_replace('_', '', (string) $scalar);
- }
- switch (true) {
- case ctype_digit($scalar):
- if (preg_match('/^0[0-7]+$/', $scalar)) {
- trigger_deprecation('symfony/yaml', '5.1', 'Support for parsing numbers prefixed with 0 as octal numbers. They will be parsed as strings as of 6.0.');
- return octdec($scalar);
- }
- $cast = (int) $scalar;
- return ($scalar === (string) $cast) ? $cast : $scalar;
- case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)):
- if (preg_match('/^-0[0-7]+$/', $scalar)) {
- trigger_deprecation('symfony/yaml', '5.1', 'Support for parsing numbers prefixed with 0 as octal numbers. They will be parsed as strings as of 6.0.');
- return -octdec(substr($scalar, 1));
- }
- $cast = (int) $scalar;
- return ($scalar === (string) $cast) ? $cast : $scalar;
- case is_numeric($scalar):
- case Parser::preg_match(self::getHexRegex(), $scalar):
- $scalar = str_replace('_', '', $scalar);
- return '0x' === $scalar[0].$scalar[1] ? hexdec($scalar) : (float) $scalar;
- case '.inf' === $scalarLower:
- case '.nan' === $scalarLower:
- return -log(0);
- case '-.inf' === $scalarLower:
- return log(0);
- case Parser::preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
- return (float) str_replace('_', '', $scalar);
- case Parser::preg_match(self::getTimestampRegex(), $scalar):
- if (Yaml::PARSE_DATETIME & $flags) {
- // When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
- return new \DateTime($scalar, new \DateTimeZone('UTC'));
- }
- $timeZone = date_default_timezone_get();
- date_default_timezone_set('UTC');
- $time = strtotime($scalar);
- date_default_timezone_set($timeZone);
- return $time;
- }
- }
- return (string) $scalar;
- }
- private static function parseTag(string $value, int &$i, int $flags): ?string
- {
- if ('!' !== $value[$i]) {
- return null;
- }
- $tagLength = strcspn($value, " \t\n[]{},", $i + 1);
- $tag = substr($value, $i + 1, $tagLength);
- $nextOffset = $i + $tagLength + 1;
- $nextOffset += strspn($value, ' ', $nextOffset);
- if ('' === $tag && (!isset($value[$nextOffset]) || \in_array($value[$nextOffset], [']', '}', ','], true))) {
- throw new ParseException(sprintf('Using the unquoted scalar value "!" is not supported. You must quote it.', $value), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- // Is followed by a scalar and is a built-in tag
- if ('' !== $tag && (!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && ('!' === $tag[0] || 'str' === $tag || 'php/const' === $tag || 'php/object' === $tag)) {
- // Manage in {@link self::evaluateScalar()}
- return null;
- }
- $i = $nextOffset;
- // Built-in tags
- if ('' !== $tag && '!' === $tag[0]) {
- throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- if ('' !== $tag && !isset($value[$i])) {
- throw new ParseException(sprintf('Missing value for tag "%s".', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- if ('' === $tag || Yaml::PARSE_CUSTOM_TAGS & $flags) {
- return $tag;
- }
- throw new ParseException(sprintf('Tags support is not enabled. Enable the "Yaml::PARSE_CUSTOM_TAGS" flag to use "!%s".', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
- }
- public static function evaluateBinaryScalar(string $scalar): string
- {
- $parsedBinaryData = self::parseScalar(preg_replace('/\s/', '', $scalar));
- if (0 !== (\strlen($parsedBinaryData) % 4)) {
- throw new ParseException(sprintf('The normalized base64 encoded data (data without whitespace characters) length must be a multiple of four (%d bytes given).', \strlen($parsedBinaryData)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- if (!Parser::preg_match('#^[A-Z0-9+/]+={0,2}$#i', $parsedBinaryData)) {
- throw new ParseException(sprintf('The base64 encoded data (%s) contains invalid characters.', $parsedBinaryData), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
- }
- return base64_decode($parsedBinaryData, true);
- }
- private static function isBinaryString(string $value): bool
- {
- return !preg_match('//u', $value) || preg_match('/[^\x00\x07-\x0d\x1B\x20-\xff]/', $value);
- }
- /**
- * Gets a regex that matches a YAML date.
- *
- * @return string The regular expression
- *
- * @see http://www.yaml.org/spec/1.2/spec.html#id2761573
- */
- private static function getTimestampRegex(): string
- {
- return <<<EOF
- ~^
- (?P<year>[0-9][0-9][0-9][0-9])
- -(?P<month>[0-9][0-9]?)
- -(?P<day>[0-9][0-9]?)
- (?:(?:[Tt]|[ \t]+)
- (?P<hour>[0-9][0-9]?)
- :(?P<minute>[0-9][0-9])
- :(?P<second>[0-9][0-9])
- (?:\.(?P<fraction>[0-9]*))?
- (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
- (?::(?P<tz_minute>[0-9][0-9]))?))?)?
- $~x
- EOF;
- }
- /**
- * Gets a regex that matches a YAML number in hexadecimal notation.
- */
- private static function getHexRegex(): string
- {
- return '~^0x[0-9a-f_]++$~i';
- }
- }
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