diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/Yaml/Inline.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/vendor/symfony/src/Symfony/Component/Yaml/Inline.php Sat Sep 24 15:40:41 2011 +0200 @@ -0,0 +1,396 @@ + + * + * 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\ParseException; +use Symfony\Component\Yaml\Exception\DumpException; + +/** + * Inline implements a YAML parser/dumper for the YAML inline syntax. + * + * @author Fabien Potencier + */ +class Inline +{ + const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\']*(?:\'\'[^\']*)*)\')'; + + /** + * Converts a YAML string to a PHP array. + * + * @param string $value A YAML string + * + * @return array A PHP array representing the YAML string + */ + static public function parse($value) + { + $value = trim($value); + + if (0 == strlen($value)) { + return ''; + } + + if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) { + $mbEncoding = mb_internal_encoding(); + mb_internal_encoding('ASCII'); + } + + switch ($value[0]) { + case '[': + $result = self::parseSequence($value); + break; + case '{': + $result = self::parseMapping($value); + break; + default: + $result = self::parseScalar($value); + } + + if (isset($mbEncoding)) { + mb_internal_encoding($mbEncoding); + } + + return $result; + } + + /** + * Dumps a given PHP variable to a YAML string. + * + * @param mixed $value The PHP variable to convert + * + * @return string The YAML string representing the PHP array + * + * @throws DumpException When trying to dump PHP resource + */ + static public function dump($value) + { + switch (true) { + case is_resource($value): + throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value))); + case is_object($value): + return '!!php/object:'.serialize($value); + case is_array($value): + return self::dumpArray($value); + case null === $value: + return 'null'; + 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): + return is_string($value) ? "'$value'" : (is_infinite($value) ? str_ireplace('INF', '.Inf', strval($value)) : $value); + case Escaper::requiresDoubleQuoting($value): + return Escaper::escapeWithDoubleQuotes($value); + case Escaper::requiresSingleQuoting($value): + return Escaper::escapeWithSingleQuotes($value); + case '' == $value: + return "''"; + case preg_match(self::getTimestampRegex(), $value): + case in_array(strtolower($value), array('null', '~', 'true', 'false')): + return "'$value'"; + default: + return $value; + } + } + + /** + * Dumps a PHP array to a YAML string. + * + * @param array $value The PHP array to dump + * + * @return string The YAML string representing the PHP array + */ + static private function dumpArray($value) + { + // array + $keys = array_keys($value); + if ((1 == count($keys) && '0' == $keys[0]) + || (count($keys) > 1 && array_reduce($keys, function ($v, $w) { return (integer) $v + $w; }, 0) == count($keys) * (count($keys) - 1) / 2) + ) { + $output = array(); + foreach ($value as $val) { + $output[] = self::dump($val); + } + + return sprintf('[%s]', implode(', ', $output)); + } + + // mapping + $output = array(); + foreach ($value as $key => $val) { + $output[] = sprintf('%s: %s', self::dump($key), self::dump($val)); + } + + return sprintf('{ %s }', implode(', ', $output)); + } + + /** + * Parses a scalar to a YAML string. + * + * @param scalar $scalar + * @param string $delimiters + * @param array $stringDelimiters + * @param integer &$i + * @param Boolean $evaluate + * + * @return string A YAML string + * + * @throws ParseException When malformed inline YAML string is parsed + */ + static public function parseScalar($scalar, $delimiters = null, $stringDelimiters = array('"', "'"), &$i = 0, $evaluate = true) + { + if (in_array($scalar[$i], $stringDelimiters)) { + // quoted scalar + $output = self::parseQuotedScalar($scalar, $i); + } else { + // "normal" string + if (!$delimiters) { + $output = substr($scalar, $i); + $i += strlen($output); + + // remove comments + if (false !== $strpos = strpos($output, ' #')) { + $output = rtrim(substr($output, 0, $strpos)); + } + } else if (preg_match('/^(.+?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) { + $output = $match[1]; + $i += strlen($output); + } else { + throw new ParseException(sprintf('Malformed inline YAML string (%s).', $scalar)); + } + + $output = $evaluate ? self::evaluateScalar($output) : $output; + } + + return $output; + } + + /** + * Parses a quoted scalar to YAML. + * + * @param string $scalar + * @param integer $i + * + * @return string A YAML string + * + * @throws ParseException When malformed inline YAML string is parsed + */ + static private function parseQuotedScalar($scalar, &$i) + { + if (!preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) { + throw new ParseException(sprintf('Malformed inline YAML string (%s).', substr($scalar, $i))); + } + + $output = substr($match[0], 1, strlen($match[0]) - 2); + + $unescaper = new Unescaper(); + if ('"' == $scalar[$i]) { + $output = $unescaper->unescapeDoubleQuotedString($output); + } else { + $output = $unescaper->unescapeSingleQuotedString($output); + } + + $i += strlen($match[0]); + + return $output; + } + + /** + * Parses a sequence to a YAML string. + * + * @param string $sequence + * @param integer $i + * + * @return string A YAML string + * + * @throws ParseException When malformed inline YAML string is parsed + */ + static private function parseSequence($sequence, &$i = 0) + { + $output = array(); + $len = strlen($sequence); + $i += 1; + + // [foo, bar, ...] + while ($i < $len) { + switch ($sequence[$i]) { + case '[': + // nested sequence + $output[] = self::parseSequence($sequence, $i); + break; + case '{': + // nested mapping + $output[] = self::parseMapping($sequence, $i); + break; + case ']': + return $output; + case ',': + case ' ': + break; + default: + $isQuoted = in_array($sequence[$i], array('"', "'")); + $value = self::parseScalar($sequence, array(',', ']'), array('"', "'"), $i); + + if (!$isQuoted && false !== strpos($value, ': ')) { + // embedded mapping? + try { + $value = self::parseMapping('{'.$value.'}'); + } catch (\InvalidArgumentException $e) { + // no, it's not + } + } + + $output[] = $value; + + --$i; + } + + ++$i; + } + + throw new ParseException(sprintf('Malformed inline YAML string %s', $sequence)); + } + + /** + * Parses a mapping to a YAML string. + * + * @param string $mapping + * @param integer $i + * + * @return string A YAML string + * + * @throws ParseException When malformed inline YAML string is parsed + */ + static private function parseMapping($mapping, &$i = 0) + { + $output = array(); + $len = strlen($mapping); + $i += 1; + + // {foo: bar, bar:foo, ...} + while ($i < $len) { + switch ($mapping[$i]) { + case ' ': + case ',': + ++$i; + continue 2; + case '}': + return $output; + } + + // key + $key = self::parseScalar($mapping, array(':', ' '), array('"', "'"), $i, false); + + // value + $done = false; + while ($i < $len) { + switch ($mapping[$i]) { + case '[': + // nested sequence + $output[$key] = self::parseSequence($mapping, $i); + $done = true; + break; + case '{': + // nested mapping + $output[$key] = self::parseMapping($mapping, $i); + $done = true; + break; + case ':': + case ' ': + break; + default: + $output[$key] = self::parseScalar($mapping, array(',', '}'), array('"', "'"), $i); + $done = true; + --$i; + } + + ++$i; + + if ($done) { + continue 2; + } + } + } + + throw new ParseException(sprintf('Malformed inline YAML string %s', $mapping)); + } + + /** + * Evaluates scalars and replaces magic values. + * + * @param string $scalar + * + * @return string A YAML string + */ + static private function evaluateScalar($scalar) + { + $scalar = trim($scalar); + + switch (true) { + case 'null' == strtolower($scalar): + case '' == $scalar: + case '~' == $scalar: + return null; + case 0 === strpos($scalar, '!str'): + return (string) substr($scalar, 5); + case 0 === strpos($scalar, '! '): + return intval(self::parseScalar(substr($scalar, 2))); + case 0 === strpos($scalar, '!!php/object:'): + return unserialize(substr($scalar, 13)); + case ctype_digit($scalar): + $raw = $scalar; + $cast = intval($scalar); + + return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw); + case 'true' === strtolower($scalar): + return true; + case 'false' === strtolower($scalar): + return false; + case is_numeric($scalar): + return '0x' == $scalar[0].$scalar[1] ? hexdec($scalar) : floatval($scalar); + case 0 == strcasecmp($scalar, '.inf'): + case 0 == strcasecmp($scalar, '.NaN'): + return -log(0); + case 0 == strcasecmp($scalar, '-.inf'): + return log(0); + case preg_match('/^(-|\+)?[0-9,]+(\.[0-9]+)?$/', $scalar): + return floatval(str_replace(',', '', $scalar)); + case preg_match(self::getTimestampRegex(), $scalar): + return strtotime($scalar); + default: + return (string) $scalar; + } + } + + /** + * Gets a regex that matches an unix timestamp + * + * @return string The regular expression + */ + static private function getTimestampRegex() + { + return <<[0-9][0-9][0-9][0-9]) + -(?P[0-9][0-9]?) + -(?P[0-9][0-9]?) + (?:(?:[Tt]|[ \t]+) + (?P[0-9][0-9]?) + :(?P[0-9][0-9]) + :(?P[0-9][0-9]) + (?:\.(?P[0-9]*))? + (?:[ \t]*(?PZ|(?P[-+])(?P[0-9][0-9]?) + (?::(?P[0-9][0-9]))?))?)? + $~x +EOF; + } +}