/**
* Sets the YAML specification version to use.
*
* @param string $version The YAML specification version
*/
public static function setSpecVersion($version)
{
if (!in_array($version, array('1.1', '1.2'))) {
throw new InvalidArgumentException(sprintf('Version %s of the YAML specifications is not supported', $version));
}
self::$spec = $version;
}
protected function parseYamlFile($file)
{
$yml = lmbYaml::load($file);
return new lmbObject($yml);
}
/**
* Evaluates scalars and replaces magic values.
*
* @param string $scalar
*
* @return string A YAML string
*/
protected static function evaluateScalar($scalar)
{
$scalar = trim($scalar);
if ('1.1' === lmbYaml::getSpecVersion()) {
$trueValues = array('true', 'on', '+', 'yes', 'y');
$falseValues = array('false', 'off', '-', 'no', 'n');
} else {
$trueValues = array('true');
$falseValues = array('false');
}
switch (true) {
case 'null' == strtolower($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 : $raw);
case in_array(strtolower($scalar), $trueValues):
return true;
case in_array(strtolower($scalar), $falseValues):
return false;
case is_numeric($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;
}
}
