829 lines
34 KiB
PHP
829 lines
34 KiB
PHP
<?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 <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 Symfony\Component\Yaml;
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use Symfony\Component\Yaml\Exception\DumpException;
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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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* Inline implements a YAML parser/dumper for the YAML inline syntax.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @internal
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*/
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class Inline
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{
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public const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
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public static int $parsedLineNumber = -1;
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public static ?string $parsedFilename = null;
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private static bool $exceptionOnInvalidType = false;
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private static bool $objectSupport = false;
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private static bool $objectForMap = false;
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private static bool $constantSupport = false;
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public static function initialize(int $flags, int $parsedLineNumber = null, string $parsedFilename = null): void
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{
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self::$exceptionOnInvalidType = (bool) (Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE & $flags);
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self::$objectSupport = (bool) (Yaml::PARSE_OBJECT & $flags);
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self::$objectForMap = (bool) (Yaml::PARSE_OBJECT_FOR_MAP & $flags);
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self::$constantSupport = (bool) (Yaml::PARSE_CONSTANT & $flags);
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self::$parsedFilename = $parsedFilename;
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if (null !== $parsedLineNumber) {
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self::$parsedLineNumber = $parsedLineNumber;
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}
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}
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/**
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* Converts a YAML string to a PHP value.
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*
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* @param int $flags A bit field of Yaml::PARSE_* constants to customize the YAML parser behavior
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* @param array $references Mapping of variable names to values
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*
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* @throws ParseException
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*/
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public static function parse(string $value = null, int $flags = 0, array &$references = []): mixed
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{
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self::initialize($flags);
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$value = trim($value);
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if ('' === $value) {
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return '';
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}
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$i = 0;
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$tag = self::parseTag($value, $i, $flags);
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switch ($value[$i]) {
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case '[':
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$result = self::parseSequence($value, $flags, $i, $references);
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++$i;
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break;
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case '{':
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$result = self::parseMapping($value, $flags, $i, $references);
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++$i;
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break;
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default:
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$result = self::parseScalar($value, $flags, null, $i, true, $references);
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}
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// some comments are allowed at the end
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if (preg_replace('/\s*#.*$/A', '', substr($value, $i))) {
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throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
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}
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if (null !== $tag && '' !== $tag) {
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return new TaggedValue($tag, $result);
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}
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return $result;
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}
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/**
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* Dumps a given PHP variable to a YAML string.
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*
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* @param mixed $value The PHP variable to convert
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* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
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*
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* @throws DumpException When trying to dump PHP resource
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*/
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public static function dump(mixed $value, int $flags = 0): string
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{
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switch (true) {
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case \is_resource($value):
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if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
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throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
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}
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return self::dumpNull($flags);
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case $value instanceof \DateTimeInterface:
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return $value->format(match (true) {
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!$length = \strlen(rtrim($value->format('u'), '0')) => 'c',
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$length < 4 => 'Y-m-d\TH:i:s.vP',
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default => 'Y-m-d\TH:i:s.uP',
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});
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case $value instanceof \UnitEnum:
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return sprintf('!php/const %s::%s', $value::class, $value->name);
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case \is_object($value):
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if ($value instanceof TaggedValue) {
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return '!'.$value->getTag().' '.self::dump($value->getValue(), $flags);
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}
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if (Yaml::DUMP_OBJECT & $flags) {
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return '!php/object '.self::dump(serialize($value));
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}
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if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \stdClass || $value instanceof \ArrayObject)) {
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return self::dumpHashArray($value, $flags);
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}
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if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
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throw new DumpException('Object support when dumping a YAML file has been disabled.');
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}
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return self::dumpNull($flags);
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case \is_array($value):
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return self::dumpArray($value, $flags);
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case null === $value:
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return self::dumpNull($flags);
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case true === $value:
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return 'true';
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case false === $value:
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return 'false';
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case \is_int($value):
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return $value;
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case is_numeric($value) && false === strpbrk($value, "\f\n\r\t\v"):
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$locale = setlocale(\LC_NUMERIC, 0);
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if (false !== $locale) {
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setlocale(\LC_NUMERIC, 'C');
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}
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if (\is_float($value)) {
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$repr = (string) $value;
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if (is_infinite($value)) {
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$repr = str_ireplace('INF', '.Inf', $repr);
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} elseif (floor($value) == $value && $repr == $value) {
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// Preserve float data type since storing a whole number will result in integer value.
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if (!str_contains($repr, 'E')) {
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$repr = $repr.'.0';
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}
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}
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} else {
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$repr = \is_string($value) ? "'$value'" : (string) $value;
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}
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if (false !== $locale) {
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setlocale(\LC_NUMERIC, $locale);
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}
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return $repr;
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case '' == $value:
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return "''";
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case self::isBinaryString($value):
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return '!!binary '.base64_encode($value);
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case Escaper::requiresDoubleQuoting($value):
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return Escaper::escapeWithDoubleQuotes($value);
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case Escaper::requiresSingleQuoting($value):
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$singleQuoted = Escaper::escapeWithSingleQuotes($value);
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if (!str_contains($value, "'")) {
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return $singleQuoted;
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}
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// Attempt double-quoting the string instead to see if it's more efficient.
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$doubleQuoted = Escaper::escapeWithDoubleQuotes($value);
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return \strlen($doubleQuoted) < \strlen($singleQuoted) ? $doubleQuoted : $singleQuoted;
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case Parser::preg_match('{^[0-9]+[_0-9]*$}', $value):
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case Parser::preg_match(self::getHexRegex(), $value):
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case Parser::preg_match(self::getTimestampRegex(), $value):
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return Escaper::escapeWithSingleQuotes($value);
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default:
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return $value;
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}
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}
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/**
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* Check if given array is hash or just normal indexed array.
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*/
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public static function isHash(array|\ArrayObject|\stdClass $value): bool
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{
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if ($value instanceof \stdClass || $value instanceof \ArrayObject) {
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return true;
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}
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$expectedKey = 0;
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foreach ($value as $key => $val) {
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if ($key !== $expectedKey++) {
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return true;
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}
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}
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return false;
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}
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/**
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* Dumps a PHP array to a YAML string.
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*
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* @param array $value The PHP array to dump
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* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
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*/
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private static function dumpArray(array $value, int $flags): string
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{
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// array
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if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
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$output = [];
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foreach ($value as $val) {
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$output[] = self::dump($val, $flags);
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}
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return sprintf('[%s]', implode(', ', $output));
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}
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return self::dumpHashArray($value, $flags);
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}
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/**
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* Dumps hash array to a YAML string.
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*
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* @param array|\ArrayObject|\stdClass $value The hash array to dump
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* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
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*/
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private static function dumpHashArray(array|\ArrayObject|\stdClass $value, int $flags): string
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{
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$output = [];
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foreach ($value as $key => $val) {
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if (\is_int($key) && Yaml::DUMP_NUMERIC_KEY_AS_STRING & $flags) {
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$key = (string) $key;
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}
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$output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
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}
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return sprintf('{ %s }', implode(', ', $output));
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}
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private static function dumpNull(int $flags): string
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{
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if (Yaml::DUMP_NULL_AS_TILDE & $flags) {
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return '~';
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}
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return 'null';
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}
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/**
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* Parses a YAML scalar.
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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public static function parseScalar(string $scalar, int $flags = 0, array $delimiters = null, int &$i = 0, bool $evaluate = true, array &$references = [], bool &$isQuoted = null): mixed
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{
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if (\in_array($scalar[$i], ['"', "'"], true)) {
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// quoted scalar
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$isQuoted = true;
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$output = self::parseQuotedScalar($scalar, $i);
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if (null !== $delimiters) {
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$tmp = ltrim(substr($scalar, $i), " \n");
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if ('' === $tmp) {
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throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode('', $delimiters)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
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}
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if (!\in_array($tmp[0], $delimiters)) {
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throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
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}
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}
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} else {
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// "normal" string
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$isQuoted = false;
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if (!$delimiters) {
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$output = substr($scalar, $i);
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$i += \strlen($output);
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// remove comments
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if (Parser::preg_match('/[ \t]+#/', $output, $match, \PREG_OFFSET_CAPTURE)) {
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$output = substr($output, 0, $match[0][1]);
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}
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} elseif (Parser::preg_match('/^(.*?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
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$output = $match[1];
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$i += \strlen($output);
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$output = trim($output);
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} else {
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throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
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}
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// a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
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if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0] || '%' === $output[0])) {
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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);
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}
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if ($evaluate) {
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$output = self::evaluateScalar($output, $flags, $references, $isQuoted);
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}
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}
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return $output;
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}
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/**
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* Parses a YAML quoted scalar.
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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private static function parseQuotedScalar(string $scalar, int &$i = 0): string
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{
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if (!Parser::preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) {
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throw new ParseException(sprintf('Malformed inline YAML string: "%s".', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
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}
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$output = substr($match[0], 1, -1);
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$unescaper = new Unescaper();
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if ('"' == $scalar[$i]) {
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$output = $unescaper->unescapeDoubleQuotedString($output);
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} else {
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$output = $unescaper->unescapeSingleQuotedString($output);
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}
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$i += \strlen($match[0]);
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return $output;
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}
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/**
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* Parses a YAML sequence.
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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private static function parseSequence(string $sequence, int $flags, int &$i = 0, array &$references = []): array
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{
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$output = [];
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$len = \strlen($sequence);
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++$i;
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// [foo, bar, ...]
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while ($i < $len) {
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if (']' === $sequence[$i]) {
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return $output;
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}
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if (',' === $sequence[$i] || ' ' === $sequence[$i]) {
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++$i;
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continue;
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}
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$tag = self::parseTag($sequence, $i, $flags);
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switch ($sequence[$i]) {
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case '[':
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// nested sequence
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$value = self::parseSequence($sequence, $flags, $i, $references);
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break;
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case '{':
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// nested mapping
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$value = self::parseMapping($sequence, $flags, $i, $references);
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break;
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default:
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$value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references, $isQuoted);
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// the value can be an array if a reference has been resolved to an array var
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if (\is_string($value) && !$isQuoted && str_contains($value, ': ')) {
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// embedded mapping?
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try {
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$pos = 0;
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$value = self::parseMapping('{'.$value.'}', $flags, $pos, $references);
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} catch (\InvalidArgumentException) {
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// no, it's not
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}
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}
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if (!$isQuoted && \is_string($value) && '' !== $value && '&' === $value[0] && Parser::preg_match(Parser::REFERENCE_PATTERN, $value, $matches)) {
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$references[$matches['ref']] = $matches['value'];
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$value = $matches['value'];
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}
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--$i;
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}
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if (null !== $tag && '' !== $tag) {
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$value = new TaggedValue($tag, $value);
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}
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$output[] = $value;
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++$i;
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}
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throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $sequence), self::$parsedLineNumber + 1, null, self::$parsedFilename);
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}
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/**
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* Parses a YAML mapping.
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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private static function parseMapping(string $mapping, int $flags, int &$i = 0, array &$references = []): array|\stdClass
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{
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$output = [];
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$len = \strlen($mapping);
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++$i;
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$allowOverwrite = false;
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// {foo: bar, bar:foo, ...}
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while ($i < $len) {
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switch ($mapping[$i]) {
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case ' ':
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case ',':
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case "\n":
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++$i;
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continue 2;
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case '}':
|
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if (self::$objectForMap) {
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return (object) $output;
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}
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|
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return $output;
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}
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|
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// key
|
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$offsetBeforeKeyParsing = $i;
|
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$isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
|
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$key = self::parseScalar($mapping, $flags, [':', ' '], $i, false);
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if ($offsetBeforeKeyParsing === $i) {
|
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throw new ParseException('Missing mapping key.', self::$parsedLineNumber + 1, $mapping);
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}
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|
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if ('!php/const' === $key || '!php/enum' === $key) {
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$key .= ' '.self::parseScalar($mapping, $flags, [':'], $i, false);
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$key = self::evaluateScalar($key, $flags);
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}
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if (false === $i = strpos($mapping, ':', $i)) {
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break;
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}
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|
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if (!$isKeyQuoted) {
|
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$evaluatedKey = self::evaluateScalar($key, $flags, $references);
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|
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if ('' !== $key && $evaluatedKey !== $key && !\is_string($evaluatedKey) && !\is_int($evaluatedKey)) {
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throw new ParseException('Implicit casting of incompatible mapping keys to strings is not supported. Quote your evaluable mapping keys instead.', self::$parsedLineNumber + 1, $mapping);
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}
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}
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|
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if (!$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}', "\n"], true))) {
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throw new ParseException('Colons must be followed by a space or an indication character (i.e. " ", ",", "[", "]", "{", "}").', self::$parsedLineNumber + 1, $mapping);
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}
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if ('<<' === $key) {
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$allowOverwrite = true;
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}
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|
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while ($i < $len) {
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if (':' === $mapping[$i] || ' ' === $mapping[$i] || "\n" === $mapping[$i]) {
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++$i;
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continue;
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}
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|
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$tag = self::parseTag($mapping, $i, $flags);
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switch ($mapping[$i]) {
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case '[':
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// nested sequence
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$value = self::parseSequence($mapping, $flags, $i, $references);
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// Spec: Keys MUST be unique; first one wins.
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// Parser cannot abort this mapping earlier, since lines
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// are processed sequentially.
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// But overwriting is allowed when a merge node is used in current block.
|
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if ('<<' === $key) {
|
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foreach ($value as $parsedValue) {
|
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$output += $parsedValue;
|
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}
|
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} elseif ($allowOverwrite || !isset($output[$key])) {
|
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if (null !== $tag) {
|
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$output[$key] = new TaggedValue($tag, $value);
|
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} else {
|
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$output[$key] = $value;
|
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}
|
|
} elseif (isset($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, $isValueQuoted);
|
|
// 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 (!$isValueQuoted && \is_string($value) && '' !== $value && '&' === $value[0] && Parser::preg_match(Parser::REFERENCE_PATTERN, $value, $matches)) {
|
|
$references[$matches['ref']] = $matches['value'];
|
|
$value = $matches['value'];
|
|
}
|
|
|
|
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.
|
|
*
|
|
* @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 = [], bool &$isQuotedString = null): mixed
|
|
{
|
|
$isQuotedString = false;
|
|
$scalar = trim($scalar);
|
|
|
|
if (str_starts_with($scalar, '*')) {
|
|
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 '!' === $scalar[0]:
|
|
switch (true) {
|
|
case str_starts_with($scalar, '!!str '):
|
|
$s = (string) substr($scalar, 6);
|
|
|
|
if (\in_array($s[0] ?? '', ['"', "'"], true)) {
|
|
$isQuotedString = true;
|
|
$s = self::parseQuotedScalar($s);
|
|
}
|
|
|
|
return $s;
|
|
case str_starts_with($scalar, '! '):
|
|
return substr($scalar, 2);
|
|
case str_starts_with($scalar, '!php/object'):
|
|
if (self::$objectSupport) {
|
|
if (!isset($scalar[12])) {
|
|
throw new ParseException('Missing value for tag "!php/object".', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
|
|
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 str_starts_with($scalar, '!php/const'):
|
|
if (self::$constantSupport) {
|
|
if (!isset($scalar[11])) {
|
|
throw new ParseException('Missing value for tag "!php/const".', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
|
|
$i = 0;
|
|
if (\defined($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 str_starts_with($scalar, '!php/enum'):
|
|
if (self::$constantSupport) {
|
|
if (!isset($scalar[11])) {
|
|
throw new ParseException('Missing value for tag "!php/enum".', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
|
|
$i = 0;
|
|
$enum = self::parseScalar(substr($scalar, 10), 0, null, $i, false);
|
|
if ($useValue = str_ends_with($enum, '->value')) {
|
|
$enum = substr($enum, 0, -7);
|
|
}
|
|
if (!\defined($enum)) {
|
|
throw new ParseException(sprintf('The enum "%s" is not defined.', $enum), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
|
|
$value = \constant($enum);
|
|
|
|
if (!$value instanceof \UnitEnum) {
|
|
throw new ParseException(sprintf('The string "%s" is not the name of a valid enum.', $enum), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
if (!$useValue) {
|
|
return $value;
|
|
}
|
|
if (!$value instanceof \BackedEnum) {
|
|
throw new ParseException(sprintf('The enum "%s" defines no value next to its name.', $enum), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
|
|
return $value->value;
|
|
}
|
|
if (self::$exceptionOnInvalidType) {
|
|
throw new ParseException(sprintf('The string "%s" could not be parsed as an enum. Did you forget to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
|
|
}
|
|
|
|
return null;
|
|
case str_starts_with($scalar, '!!float '):
|
|
return (float) substr($scalar, 8);
|
|
case str_starts_with($scalar, '!!binary '):
|
|
return self::evaluateBinaryScalar(substr($scalar, 9));
|
|
}
|
|
|
|
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);
|
|
case preg_match('/^(?:\+|-)?0o(?P<value>[0-7_]++)$/', $scalar, $matches):
|
|
$value = str_replace('_', '', $matches['value']);
|
|
|
|
if ('-' === $scalar[0]) {
|
|
return -octdec($value);
|
|
}
|
|
|
|
return octdec($value);
|
|
case \in_array($scalar[0], ['+', '-', '.'], true) || is_numeric($scalar[0]):
|
|
if (Parser::preg_match('{^[+-]?[0-9][0-9_]*$}', $scalar)) {
|
|
$scalar = str_replace('_', '', $scalar);
|
|
}
|
|
|
|
switch (true) {
|
|
case ctype_digit($scalar):
|
|
case '-' === $scalar[0] && ctype_digit(substr($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):
|
|
// When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
|
|
$time = new \DateTimeImmutable($scalar, new \DateTimeZone('UTC'));
|
|
|
|
if (Yaml::PARSE_DATETIME & $flags) {
|
|
return $time;
|
|
}
|
|
|
|
if ('' !== rtrim($time->format('u'), '0')) {
|
|
return (float) $time->format('U.u');
|
|
}
|
|
|
|
try {
|
|
if (false !== $scalar = $time->getTimestamp()) {
|
|
return $scalar;
|
|
}
|
|
} catch (\ValueError) {
|
|
// no-op
|
|
}
|
|
|
|
return $time->format('U');
|
|
}
|
|
}
|
|
|
|
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[$nextOffset], [']', '}', ','], true))) {
|
|
throw new ParseException('Using the unquoted scalar value "!" is not supported. You must quote it.', self::$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)) && ('!' === $tag[0] || \in_array($tag, ['str', 'php/const', 'php/enum', 'php/object'], true))) {
|
|
// 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.
|
|
*
|
|
* @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';
|
|
}
|
|
}
|