4cec9a9e86
* 2.5: Updated generateSql tool Fix the implementation of deprecated Locale classes Fix phpdoc and coding standards Replace usages of the deprecated TypeTestCase by the new one Remove usages of deprecated constants Update functional tests to use the PSR NullLogger fix regression in form tests after pr #13027 | Q | A | ------------- | --- | Bug fix? | yes | New feature? | no | BC breaks? | no | Deprecations? | no | Tests pass? | yes | Fixed tickets | - | License | MIT | Doc PR | - Make fabbot happy Clean up testing No global state for isolated tests and other fixes No global state for isolated tests and other fixes fix #10054 - form data collector with dynamic fields [TwigBundle] Moved the setting of the default escaping strategy from the Twig engine to the Twig environment [Debug] fix checkip6 [HttpFoundation] fixed error when an IP in the X-Forwarded-For HTTP header contains a port Update the note about origins of the CssSelector component. Use the correct cssselect library name in docblocks. [DomCrawler] fixed bug #12143 Conflicts: src/Symfony/Bundle/FrameworkBundle/Templating/GlobalVariables.php src/Symfony/Component/Serializer/Normalizer/DenormalizableInterface.php
536 lines
19 KiB
PHP
536 lines
19 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\ParseException;
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use Symfony\Component\Yaml\Exception\DumpException;
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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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class Inline
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{
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const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\']*(?:\'\'[^\']*)*)\')';
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private static $exceptionOnInvalidType = false;
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private static $objectSupport = false;
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private static $objectForMap = false;
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/**
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* Converts a YAML string to a PHP array.
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*
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* @param string $value A YAML string
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* @param bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
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* @param bool $objectSupport true if object support is enabled, false otherwise
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* @param bool $objectForMap true if maps should return a stdClass instead of array()
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* @param array $references Mapping of variable names to values
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*
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* @return array A PHP array representing the YAML string
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*
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* @throws ParseException
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*/
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public static function parse($value, $exceptionOnInvalidType = false, $objectSupport = false, $objectForMap = false, $references = array())
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{
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self::$exceptionOnInvalidType = $exceptionOnInvalidType;
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self::$objectSupport = $objectSupport;
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self::$objectForMap = $objectForMap;
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$value = trim($value);
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if (0 == strlen($value)) {
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return '';
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}
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if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
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$mbEncoding = mb_internal_encoding();
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mb_internal_encoding('ASCII');
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}
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$i = 0;
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switch ($value[0]) {
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case '[':
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$result = self::parseSequence($value, $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, $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, null, array('"', "'"), $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, $i)));
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}
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if (isset($mbEncoding)) {
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mb_internal_encoding($mbEncoding);
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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 bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
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* @param bool $objectSupport true if object support is enabled, false otherwise
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*
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* @return string The YAML string representing the PHP array
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*
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* @throws DumpException When trying to dump PHP resource
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*/
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public static function dump($value, $exceptionOnInvalidType = false, $objectSupport = false)
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{
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switch (true) {
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case is_resource($value):
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if ($exceptionOnInvalidType) {
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throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
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}
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return 'null';
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case is_object($value):
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if ($objectSupport) {
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return '!!php/object:'.serialize($value);
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}
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if ($exceptionOnInvalidType) {
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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 'null';
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case is_array($value):
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return self::dumpArray($value, $exceptionOnInvalidType, $objectSupport);
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case null === $value:
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return 'null';
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case true === $value:
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return 'true';
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case false === $value:
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return 'false';
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case ctype_digit($value):
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return is_string($value) ? "'$value'" : (int) $value;
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case is_numeric($value):
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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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$repr = strval($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 == $value) {
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// Preserve float data type since storing a whole number will result in integer value.
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$repr = '!!float '.$repr;
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}
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} else {
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$repr = is_string($value) ? "'$value'" : strval($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 $repr;
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case Escaper::requiresDoubleQuoting($value):
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return Escaper::escapeWithDoubleQuotes($value);
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case Escaper::requiresSingleQuoting($value):
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return Escaper::escapeWithSingleQuotes($value);
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case '' == $value:
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return "''";
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case preg_match(self::getTimestampRegex(), $value):
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case in_array(strtolower($value), array('null', '~', 'true', 'false')):
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return "'$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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* 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 bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
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* @param bool $objectSupport true if object support is enabled, false otherwise
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*
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* @return string The YAML string representing the PHP array
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*/
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private static function dumpArray($value, $exceptionOnInvalidType, $objectSupport)
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{
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// array
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$keys = array_keys($value);
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if ((1 == count($keys) && '0' == $keys[0])
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|| (count($keys) > 1 && array_reduce($keys, function ($v, $w) { return (int) $v + $w; }, 0) == count($keys) * (count($keys) - 1) / 2)
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) {
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$output = array();
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foreach ($value as $val) {
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$output[] = self::dump($val, $exceptionOnInvalidType, $objectSupport);
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}
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return sprintf('[%s]', implode(', ', $output));
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}
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// mapping
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$output = array();
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foreach ($value as $key => $val) {
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$output[] = sprintf('%s: %s', self::dump($key, $exceptionOnInvalidType, $objectSupport), self::dump($val, $exceptionOnInvalidType, $objectSupport));
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}
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return sprintf('{ %s }', implode(', ', $output));
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}
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/**
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* Parses a scalar to a YAML string.
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*
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* @param string $scalar
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* @param string $delimiters
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* @param array $stringDelimiters
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* @param int &$i
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* @param bool $evaluate
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* @param array $references
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*
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* @return string A YAML string
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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public static function parseScalar($scalar, $delimiters = null, $stringDelimiters = array('"', "'"), &$i = 0, $evaluate = true, $references = array())
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{
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if (in_array($scalar[$i], $stringDelimiters)) {
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// quoted scalar
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$output = self::parseQuotedScalar($scalar, $i);
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if (null !== $delimiters) {
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$tmp = ltrim(substr($scalar, $i), ' ');
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if (!in_array($tmp[0], $delimiters)) {
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throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)));
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}
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}
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} else {
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// "normal" string
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if (!$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 (false !== $strpos = strpos($output, ' #')) {
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$output = rtrim(substr($output, 0, $strpos));
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}
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} elseif (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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} else {
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throw new ParseException(sprintf('Malformed inline YAML string (%s).', $scalar));
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}
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if ($evaluate) {
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$output = self::evaluateScalar($output, $references);
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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 quoted scalar to YAML.
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*
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* @param string $scalar
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* @param int &$i
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*
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* @return string A YAML string
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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($scalar, &$i)
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{
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if (!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, $i)));
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}
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$output = substr($match[0], 1, strlen($match[0]) - 2);
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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 sequence to a YAML string.
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*
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* @param string $sequence
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* @param int &$i
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* @param array $references
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*
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* @return string A YAML string
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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private static function parseSequence($sequence, &$i = 0, $references = array())
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{
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$output = array();
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$len = strlen($sequence);
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$i += 1;
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// [foo, bar, ...]
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while ($i < $len) {
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switch ($sequence[$i]) {
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case '[':
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// nested sequence
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$output[] = self::parseSequence($sequence, $i, $references);
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break;
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case '{':
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// nested mapping
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$output[] = self::parseMapping($sequence, $i, $references);
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break;
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case ']':
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return $output;
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case ',':
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case ' ':
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break;
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default:
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$isQuoted = in_array($sequence[$i], array('"', "'"));
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$value = self::parseScalar($sequence, array(',', ']'), array('"', "'"), $i, true, $references);
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// the value can be an array if a reference has been resolved to an array var
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if (!is_array($value) && !$isQuoted && false !== strpos($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.'}', $pos, $references);
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} catch (\InvalidArgumentException $e) {
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// no, it's not
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}
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}
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$output[] = $value;
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--$i;
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}
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++$i;
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}
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throw new ParseException(sprintf('Malformed inline YAML string %s', $sequence));
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}
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/**
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* Parses a mapping to a YAML string.
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*
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* @param string $mapping
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* @param int &$i
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* @param array $references
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*
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* @return string A YAML string
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*
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* @throws ParseException When malformed inline YAML string is parsed
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*/
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private static function parseMapping($mapping, &$i = 0, $references = array())
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{
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$output = array();
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$len = strlen($mapping);
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$i += 1;
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// {foo: bar, bar:foo, ...}
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while ($i < $len) {
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switch ($mapping[$i]) {
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case ' ':
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case ',':
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++$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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return $output;
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}
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// key
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$key = self::parseScalar($mapping, array(':', ' '), array('"', "'"), $i, false);
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// value
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$done = false;
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while ($i < $len) {
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switch ($mapping[$i]) {
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case '[':
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// nested sequence
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$value = self::parseSequence($mapping, $i, $references);
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// Spec: Keys MUST be unique; first one wins.
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// Parser cannot abort this mapping earlier, since lines
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// are processed sequentially.
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if (!isset($output[$key])) {
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$output[$key] = $value;
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}
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$done = true;
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break;
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case '{':
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// nested mapping
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$value = self::parseMapping($mapping, $i, $references);
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// Spec: Keys MUST be unique; first one wins.
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// Parser cannot abort this mapping earlier, since lines
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// are processed sequentially.
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if (!isset($output[$key])) {
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$output[$key] = $value;
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}
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$done = true;
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break;
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case ':':
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case ' ':
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break;
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default:
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$value = self::parseScalar($mapping, array(',', '}'), array('"', "'"), $i, true, $references);
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// Spec: Keys MUST be unique; first one wins.
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// Parser cannot abort this mapping earlier, since lines
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// are processed sequentially.
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if (!isset($output[$key])) {
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$output[$key] = $value;
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}
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$done = true;
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--$i;
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}
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++$i;
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if ($done) {
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continue 2;
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}
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}
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}
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throw new ParseException(sprintf('Malformed inline YAML string %s', $mapping));
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}
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/**
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* Evaluates scalars and replaces magic values.
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*
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* @param string $scalar
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* @param array $references
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*
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* @return string A YAML string
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*
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* @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
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*/
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private static function evaluateScalar($scalar, $references = array())
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{
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$scalar = trim($scalar);
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$scalarLower = strtolower($scalar);
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if (0 === strpos($scalar, '*')) {
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if (false !== $pos = strpos($scalar, '#')) {
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$value = substr($scalar, 1, $pos - 2);
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} else {
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$value = substr($scalar, 1);
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}
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// an unquoted *
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if (false === $value || '' === $value) {
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throw new ParseException('A reference must contain at least one character.');
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}
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if (!array_key_exists($value, $references)) {
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throw new ParseException(sprintf('Reference "%s" does not exist.', $value));
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}
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return $references[$value];
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}
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switch (true) {
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case 'null' === $scalarLower:
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case '' === $scalar:
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case '~' === $scalar:
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return;
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case 'true' === $scalarLower:
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return true;
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case 'false' === $scalarLower:
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return false;
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// Optimise for returning strings.
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case $scalar[0] === '+' || $scalar[0] === '-' || $scalar[0] === '.' || $scalar[0] === '!' || is_numeric($scalar[0]):
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switch (true) {
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case 0 === strpos($scalar, '!str'):
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return (string) substr($scalar, 5);
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case 0 === strpos($scalar, '! '):
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return intval(self::parseScalar(substr($scalar, 2)));
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case 0 === strpos($scalar, '!!php/object:'):
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if (self::$objectSupport) {
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return unserialize(substr($scalar, 13));
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}
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if (self::$exceptionOnInvalidType) {
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throw new ParseException('Object support when parsing a YAML file has been disabled.');
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}
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return;
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case 0 === strpos($scalar, '!!float '):
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return (float) substr($scalar, 8);
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case ctype_digit($scalar):
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$raw = $scalar;
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$cast = intval($scalar);
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return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
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case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)):
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$raw = $scalar;
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$cast = intval($scalar);
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return '0' == $scalar[1] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
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case is_numeric($scalar):
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return '0x' == $scalar[0].$scalar[1] ? hexdec($scalar) : floatval($scalar);
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case '.inf' === $scalarLower:
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case '.nan' === $scalarLower:
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return -log(0);
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case '-.inf' === $scalarLower:
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return log(0);
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case preg_match('/^(-|\+)?[0-9,]+(\.[0-9]+)?$/', $scalar):
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return floatval(str_replace(',', '', $scalar));
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case preg_match(self::getTimestampRegex(), $scalar):
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return strtotime($scalar);
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}
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default:
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return (string) $scalar;
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}
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}
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/**
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* Gets a regex that matches a YAML date.
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*
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* @return string The regular expression
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*
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* @see http://www.yaml.org/spec/1.2/spec.html#id2761573
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*/
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private static function getTimestampRegex()
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{
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return <<<EOF
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~^
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(?P<year>[0-9][0-9][0-9][0-9])
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-(?P<month>[0-9][0-9]?)
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-(?P<day>[0-9][0-9]?)
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(?:(?:[Tt]|[ \t]+)
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(?P<hour>[0-9][0-9]?)
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:(?P<minute>[0-9][0-9])
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:(?P<second>[0-9][0-9])
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(?:\.(?P<fraction>[0-9]*))?
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(?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
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(?::(?P<tz_minute>[0-9][0-9]))?))?)?
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$~x
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EOF;
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}
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}
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