openrat-cms

Spyc.class.php (34654B)

---

 <?php
 /**
  * Spyc -- A Simple PHP YAML Class
  * @version 0.6.2
  * @author Vlad Andersen <vlad.andersen@gmail.com>
  * @author Chris Wanstrath <chris@ozmm.org>
  * @link https://github.com/mustangostang/spyc/
  * @copyright Copyright 2005-2006 Chris Wanstrath, 2006-2011 Vlad Andersen
  * @license http://www.opensource.org/licenses/mit-license.php MIT License
  * @package Spyc
  */
 
 if (!function_exists('spyc_load')) {
 	/**
 	 * Parses YAML to array.
 	 * @param string $string YAML string.
 	 * @return array
 	 */
 	function spyc_load ($string) {
 		return Spyc::YAMLLoadString($string);
 	}
 }
 
 if (!function_exists('spyc_load_file')) {
 	/**
 	 * Parses YAML to array.
 	 * @param string $file Path to YAML file.
 	 * @return array
 	 */
 	function spyc_load_file ($file) {
 		return Spyc::YAMLLoad($file);
 	}
 }
 
 if (!function_exists('spyc_dump')) {
 	/**
 	 * Dumps array to YAML.
 	 * @param array $data Array.
 	 * @return string
 	 */
 	function spyc_dump ($data) {
 		return Spyc::YAMLDump($data, false, false, true);
 	}
 }
 
 if (!class_exists('Spyc')) {
 
 	/**
 	 * The Simple PHP YAML Class.
 	 *
 	 * This class can be used to read a YAML file and convert its contents
 	 * into a PHP array.  It currently supports a very limited subsection of
 	 * the YAML spec.
 	 *
 	 * Usage:
 	 * <code>
 	 *   $Spyc  = new Spyc;
 	 *   $array = $Spyc->load($file);
 	 * </code>
 	 * or:
 	 * <code>
 	 *   $array = Spyc::YAMLLoad($file);
 	 * </code>
 	 * or:
 	 * <code>
 	 *   $array = spyc_load_file($file);
 	 * </code>
 	 * @package Spyc
 	 */
 	class Spyc {
 
 		// SETTINGS
 
 		const REMPTY = "\0\0\0\0\0";
 
 		/**
 		 * Setting this to true will force YAMLDump to enclose any string value in
 		 * quotes.  False by default.
 		 *
 		 * @var bool
 		 */
 		public $setting_dump_force_quotes = false;
 
 		/**
 		 * Setting this to true will forse YAMLLoad to use syck_load function when
 		 * possible. False by default.
 		 * @var bool
 		 */
 		public $setting_use_syck_is_possible = false;
 
 		/**
 		 * Setting this to true will forse YAMLLoad to use syck_load function when
 		 * possible. False by default.
 		 * @var bool
 		 */
 		public $setting_empty_hash_as_object = false;
 
 
 		/**#@+
 		 * @access private
 		 * @var mixed
 		 */
 		private $_dumpIndent;
 		private $_dumpWordWrap;
 		private $_containsGroupAnchor = false;
 		private $_containsGroupAlias = false;
 		private $path;
 		private $result;
 		private $LiteralPlaceHolder = '___YAML_Literal_Block___';
 		private $SavedGroups = array();
 		private $indent;
 		/**
 		 * Path modifier that should be applied after adding current element.
 		 * @var array
 		 */
 		private $delayedPath = array();
 
 		/**#@+
 		 * @access public
 		 * @var mixed
 		 */
 		public $_nodeId;
 
 		/**
 		 * Load a valid YAML string to Spyc.
 		 * @param string $input
 		 * @return array
 		 */
 		public function load ($input) {
 			return $this->_loadString($input);
 		}
 
 		/**
 		 * Load a valid YAML file to Spyc.
 		 * @param string $file
 		 * @return array
 		 */
 		public function loadFile ($file) {
 			return $this->_load($file);
 		}
 
 		/**
 		 * Load YAML into a PHP array statically
 		 *
 		 * The load method, when supplied with a YAML stream (string or file),
 		 * will do its best to convert YAML in a file into a PHP array.  Pretty
 		 * simple.
 		 *  Usage:
 		 *  <code>
 		 *   $array = Spyc::YAMLLoad('lucky.yaml');
 		 *   print_r($array);
 		 *  </code>
 		 * @access public
 		 * @return array
 		 * @param string $input Path of YAML file or string containing YAML
 		 * @param array set options
 		 */
 		public static function YAMLLoad($input, $options = []) {
 			$Spyc = new Spyc;
 			foreach ($options as $key => $value) {
 				if (property_exists($Spyc, $key)) {
 					$Spyc->$key = $value;
 				}
 			}
 			return $Spyc->_load($input);
 		}
 
 		/**
 		 * Load a string of YAML into a PHP array statically
 		 *
 		 * The load method, when supplied with a YAML string, will do its best
 		 * to convert YAML in a string into a PHP array.  Pretty simple.
 		 *
 		 * Note: use this function if you don't want files from the file system
 		 * loaded and processed as YAML.  This is of interest to people concerned
 		 * about security whose input is from a string.
 		 *
 		 *  Usage:
 		 *  <code>
 		 *   $array = Spyc::YAMLLoadString("---\n0: hello world\n");
 		 *   print_r($array);
 		 *  </code>
 		 * @access public
 		 * @return array
 		 * @param string $input String containing YAML
 		 * @param array set options
 		 */
 		public static function YAMLLoadString($input, $options = []) {
 			$Spyc = new Spyc;
 			foreach ($options as $key => $value) {
 				if (property_exists($Spyc, $key)) {
 					$Spyc->$key = $value;
 				}
 			}
 			return $Spyc->_loadString($input);
 		}
 
 		/**
 		 * Dump YAML from PHP array statically
 		 *
 		 * The dump method, when supplied with an array, will do its best
 		 * to convert the array into friendly YAML.  Pretty simple.  Feel free to
 		 * save the returned string as nothing.yaml and pass it around.
 		 *
 		 * Oh, and you can decide how big the indent is and what the wordwrap
 		 * for folding is.  Pretty cool -- just pass in 'false' for either if
 		 * you want to use the default.
 		 *
 		 * Indent's default is 2 spaces, wordwrap's default is 40 characters.  And
 		 * you can turn off wordwrap by passing in 0.
 		 *
 		 * @access public
 		 * @return string
 		 * @param array|\stdClass $array PHP array
 		 * @param int $indent Pass in false to use the default, which is 2
 		 * @param int $wordwrap Pass in 0 for no wordwrap, false for default (40)
 		 * @param bool $no_opening_dashes Do not start YAML file with "---\n"
 		 */
 		public static function YAMLDump($array, $indent = false, $wordwrap = false, $no_opening_dashes = false) {
 			$spyc = new Spyc;
 			return $spyc->dump($array, $indent, $wordwrap, $no_opening_dashes);
 		}
 
 
 		/**
 		 * Dump PHP array to YAML
 		 *
 		 * The dump method, when supplied with an array, will do its best
 		 * to convert the array into friendly YAML.  Pretty simple.  Feel free to
 		 * save the returned string as tasteful.yaml and pass it around.
 		 *
 		 * Oh, and you can decide how big the indent is and what the wordwrap
 		 * for folding is.  Pretty cool -- just pass in 'false' for either if
 		 * you want to use the default.
 		 *
 		 * Indent's default is 2 spaces, wordwrap's default is 40 characters.  And
 		 * you can turn off wordwrap by passing in 0.
 		 *
 		 * @access public
 		 * @return string
 		 * @param array $array PHP array
 		 * @param int $indent Pass in false to use the default, which is 2
 		 * @param int $wordwrap Pass in 0 for no wordwrap, false for default (40)
 		 */
 		public function dump($array,$indent = false,$wordwrap = false, $no_opening_dashes = false) {
 			// Dumps to some very clean YAML.  We'll have to add some more features
 			// and options soon.  And better support for folding.
 
 			// New features and options.
 			if ($indent === false or !is_numeric($indent)) {
 				$this->_dumpIndent = 2;
 			} else {
 				$this->_dumpIndent = $indent;
 			}
 
 			if ($wordwrap === false or !is_numeric($wordwrap)) {
 				$this->_dumpWordWrap = 40;
 			} else {
 				$this->_dumpWordWrap = $wordwrap;
 			}
 
 			// New YAML document
 			$string = "";
 			if (!$no_opening_dashes) $string = "---\n";
 
 			// Start at the base of the array and move through it.
 			if ($array) {
 				$array = (array)$array;
 				$previous_key = -1;
 				foreach ($array as $key => $value) {
 					if (!isset($first_key)) $first_key = $key;
 					$string .= $this->_yamlize($key,$value,0,$previous_key, $first_key, $array);
 					$previous_key = $key;
 				}
 			}
 			return $string;
 		}
 
 		/**
 		 * Attempts to convert a key / value array item to YAML
 		 * @access private
 		 * @return string
 		 * @param $key The name of the key
 		 * @param $value The value of the item
 		 * @param $indent The indent of the current node
 		 */
 		private function _yamlize($key,$value,$indent, $previous_key = -1, $first_key = 0, $source_array = null) {
 			if(is_object($value)) $value = (array)$value;
 			if (is_array($value)) {
 				if (empty ($value))
 					return $this->_dumpNode($key, array(), $indent, $previous_key, $first_key, $source_array);
 				// It has children.  What to do?
 				// Make it the right kind of item
 				$string = $this->_dumpNode($key, self::REMPTY, $indent, $previous_key, $first_key, $source_array);
 				// Add the indent
 				$indent += $this->_dumpIndent;
 				// Yamlize the array
 				$string .= $this->_yamlizeArray($value,$indent);
 			} elseif (!is_array($value)) {
 				// It doesn't have children.  Yip.
 				$string = $this->_dumpNode($key, $value, $indent, $previous_key, $first_key, $source_array);
 			}
 			return $string;
 		}
 
 		/**
 		 * Attempts to convert an array to YAML
 		 * @access private
 		 * @return string
 		 * @param $array The array you want to convert
 		 * @param $indent The indent of the current level
 		 */
 		private function _yamlizeArray($array,$indent) {
 			if (is_array($array)) {
 				$string = '';
 				$previous_key = -1;
 				foreach ($array as $key => $value) {
 					if (!isset($first_key)) $first_key = $key;
 					$string .= $this->_yamlize($key, $value, $indent, $previous_key, $first_key, $array);
 					$previous_key = $key;
 				}
 				return $string;
 			} else {
 				return false;
 			}
 		}
 
 		/**
 		 * Returns YAML from a key and a value
 		 * @access private
 		 * @return string
 		 * @param $key The name of the key
 		 * @param $value The value of the item
 		 * @param $indent The indent of the current node
 		 */
 		private function _dumpNode($key, $value, $indent, $previous_key = -1, $first_key = 0, $source_array = null) {
 			// do some folding here, for blocks
 			if (is_string ($value) && ((strpos($value,"\n") !== false || strpos($value,": ") !== false || strpos($value,"- ") !== false ||
 						strpos($value,"*") !== false || strpos($value,"#") !== false || strpos($value,"<") !== false || strpos($value,">") !== false || strpos ($value, '%') !== false || strpos ($value, '  ') !== false ||
 						strpos($value,"[") !== false || strpos($value,"]") !== false || strpos($value,"{") !== false || strpos($value,"}") !== false) || strpos($value,"&") !== false || strpos($value, "'") !== false || strpos($value, "!") === 0 ||
 					substr ($value, -1, 1) == ':')
 			) {
 				$value = $this->_doLiteralBlock($value,$indent);
 			} else {
 				$value  = $this->_doFolding($value,$indent);
 			}
 
 			if ($value === array()) $value = '[ ]';
 			if ($value === "") $value = '""';
 			if (self::isTranslationWord($value)) {
 				$value = $this->_doLiteralBlock($value, $indent);
 			}
 			if (trim ($value) != $value)
 				$value = $this->_doLiteralBlock($value,$indent);
 
 			if (is_bool($value)) {
 				$value = $value ? "true" : "false";
 			}
 
 			if ($value === null) $value = 'null';
 			if ($value === "'" . self::REMPTY . "'") $value = null;
 
 			$spaces = str_repeat(' ',$indent);
 
 			//if (is_int($key) && $key - 1 == $previous_key && $first_key===0) {
 			if (is_array ($source_array) && array_keys($source_array) === range(0, count($source_array) - 1)) {
 				// It's a sequence
 				$string = $spaces.'- '.$value."\n";
 			} else {
 				// if ($first_key===0)  throw new Exception('Keys are all screwy.  The first one was zero, now it\'s "'. $key .'"');
 				// It's mapped
 				if (strpos($key, ":") !== false || strpos($key, "#") !== false) { $key = '"' . $key . '"'; }
 				$string = rtrim ($spaces.$key.': '.$value)."\n";
 			}
 			return $string;
 		}
 
 		/**
 		 * Creates a literal block for dumping
 		 * @access private
 		 * @return string
 		 * @param $value
 		 * @param $indent int The value of the indent
 		 */
 		private function _doLiteralBlock($value,$indent) {
 			if ($value === "\n") return '\n';
 			if (strpos($value, "\n") === false && strpos($value, "'") === false) {
 				return sprintf ("'%s'", $value);
 			}
 			if (strpos($value, "\n") === false && strpos($value, '"') === false) {
 				return sprintf ('"%s"', $value);
 			}
 			$exploded = explode("\n",$value);
 			$newValue = '|';
 			if (isset($exploded[0]) && ($exploded[0] == "|" || $exploded[0] == "|-" || $exploded[0] == ">")) {
 				$newValue = $exploded[0];
 				unset($exploded[0]);
 			}
 			$indent += $this->_dumpIndent;
 			$spaces   = str_repeat(' ',$indent);
 			foreach ($exploded as $line) {
 				$line = trim($line);
 				if (strpos($line, '"') === 0 && strrpos($line, '"') == (strlen($line)-1) || strpos($line, "'") === 0 && strrpos($line, "'") == (strlen($line)-1)) {
 					$line = substr($line, 1, -1);
 				}
 				$newValue .= "\n" . $spaces . ($line);
 			}
 			return $newValue;
 		}
 
 		/**
 		 * Folds a string of text, if necessary
 		 * @access private
 		 * @return string
 		 * @param $value The string you wish to fold
 		 */
 		private function _doFolding($value,$indent) {
 			// Don't do anything if wordwrap is set to 0
 
 			if ($this->_dumpWordWrap !== 0 && is_string ($value) && strlen($value) > $this->_dumpWordWrap) {
 				$indent += $this->_dumpIndent;
 				$indent = str_repeat(' ',$indent);
 				$wrapped = wordwrap($value,$this->_dumpWordWrap,"\n$indent");
 				$value   = ">\n".$indent.$wrapped;
 			} else {
 				if ($this->setting_dump_force_quotes && is_string ($value) && $value !== self::REMPTY)
 					$value = '"' . $value . '"';
 				if (is_numeric($value) && is_string($value))
 					$value = '"' . $value . '"';
 			}
 
 
 			return $value;
 		}
 
 		private function isTrueWord($value) {
 			$words = self::getTranslations(array('true', 'on', 'yes', 'y'));
 			return in_array($value, $words, true);
 		}
 
 		private function isFalseWord($value) {
 			$words = self::getTranslations(array('false', 'off', 'no', 'n'));
 			return in_array($value, $words, true);
 		}
 
 		private function isNullWord($value) {
 			$words = self::getTranslations(array('null', '~'));
 			return in_array($value, $words, true);
 		}
 
 		private function isTranslationWord($value) {
 			return (
 				self::isTrueWord($value)  ||
 				self::isFalseWord($value) ||
 				self::isNullWord($value)
 			);
 		}
 
 		/**
 		 * Coerce a string into a native type
 		 * Reference: http://yaml.org/type/bool.html
 		 * TODO: Use only words from the YAML spec.
 		 * @access private
 		 * @param $value The value to coerce
 		 */
 		private function coerceValue(&$value) {
 			if (self::isTrueWord($value)) {
 				$value = true;
 			} else if (self::isFalseWord($value)) {
 				$value = false;
 			} else if (self::isNullWord($value)) {
 				$value = null;
 			}
 		}
 
 		/**
 		 * Given a set of words, perform the appropriate translations on them to
 		 * match the YAML 1.1 specification for type coercing.
 		 * @param $words The words to translate
 		 * @access private
 		 */
 		private static function getTranslations(array $words) {
 			$result = array();
 			foreach ($words as $i) {
 				$result = array_merge($result, array(ucfirst($i), strtoupper($i), strtolower($i)));
 			}
 			return $result;
 		}
 
 // LOADING FUNCTIONS
 
 		private function _load($input) {
 			$Source = $this->loadFromSource($input);
 			return $this->loadWithSource($Source);
 		}
 
 		private function _loadString($input) {
 			$Source = $this->loadFromString($input);
 			return $this->loadWithSource($Source);
 		}
 
 		private function loadWithSource($Source) {
 			if (empty ($Source)) return array();
 			if ($this->setting_use_syck_is_possible && function_exists ('syck_load')) {
 				$array = syck_load (implode ("\n", $Source));
 				return is_array($array) ? $array : array();
 			}
 
 			$this->path = array();
 			$this->result = array();
 
 			$cnt = count($Source);
 			for ($i = 0; $i < $cnt; $i++) {
 				$line = $Source[$i];
 
 				$this->indent = strlen($line) - strlen(ltrim($line));
 				$tempPath = $this->getParentPathByIndent($this->indent);
 				$line = self::stripIndent($line, $this->indent);
 				if (self::isComment($line)) continue;
 				if (self::isEmpty($line)) continue;
 				$this->path = $tempPath;
 
 				$literalBlockStyle = self::startsLiteralBlock($line);
 				if ($literalBlockStyle) {
 					$line = rtrim ($line, $literalBlockStyle . " \n");
 					$literalBlock = '';
 					$line .= ' '.$this->LiteralPlaceHolder;
 					$literal_block_indent = strlen($Source[$i+1]) - strlen(ltrim($Source[$i+1]));
 					while (++$i < $cnt && $this->literalBlockContinues($Source[$i], $this->indent)) {
 						$literalBlock = $this->addLiteralLine($literalBlock, $Source[$i], $literalBlockStyle, $literal_block_indent);
 					}
 					$i--;
 				}
 
 				// Strip out comments
 				if (strpos ($line, '#')) {
 					$line = preg_replace('/\s*#([^"\']+)$/','',$line);
 				}
 
 				while (++$i < $cnt && self::greedilyNeedNextLine($line)) {
 					$line = rtrim ($line, " \n\t\r") . ' ' . ltrim ($Source[$i], " \t");
 				}
 				$i--;
 
 				$lineArray = $this->_parseLine($line);
 
 				if ($literalBlockStyle)
 					$lineArray = $this->revertLiteralPlaceHolder ($lineArray, $literalBlock);
 
 				$this->addArray($lineArray, $this->indent);
 
 				foreach ($this->delayedPath as $indent => $delayedPath)
 					$this->path[$indent] = $delayedPath;
 
 				$this->delayedPath = array();
 
 			}
 			return $this->result;
 		}
 
 		private function loadFromSource ($input) {
 			if (!empty($input) && strpos($input, "\n") === false && file_exists($input))
 				$input = file_get_contents($input);
 
 			return $this->loadFromString($input);
 		}
 
 		private function loadFromString ($input) {
 			$lines = explode("\n",$input);
 			foreach ($lines as $k => $_) {
 				$lines[$k] = rtrim ($_, "\r");
 			}
 			return $lines;
 		}
 
 		/**
 		 * Parses YAML code and returns an array for a node
 		 * @access private
 		 * @return array
 		 * @param string $line A line from the YAML file
 		 */
 		private function _parseLine($line) {
 			if (!$line) return array();
 			$line = trim($line);
 			if (!$line) return array();
 
 			$array = array();
 
 			$group = $this->nodeContainsGroup($line);
 			if ($group) {
 				$this->addGroup($line, $group);
 				$line = $this->stripGroup ($line, $group);
 			}
 
 			if ($this->startsMappedSequence($line)) {
 				return $this->returnMappedSequence($line);
 			}
 
 			if ($this->startsMappedValue($line)) {
 				return $this->returnMappedValue($line);
 			}
 
 			if ($this->isArrayElement($line))
 				return $this->returnArrayElement($line);
 
 			if ($this->isPlainArray($line))
 				return $this->returnPlainArray($line);
 
 			return $this->returnKeyValuePair($line);
 
 		}
 
 		/**
 		 * Finds the type of the passed value, returns the value as the new type.
 		 * @access private
 		 * @param string $value
 		 * @return mixed
 		 */
 		private function _toType($value) {
 			if ($value === '') return "";
 
 			if ($this->setting_empty_hash_as_object && $value === '{}') {
 				return new stdClass();
 			}
 
 			$first_character = $value[0];
 			$last_character = substr($value, -1, 1);
 
 			$is_quoted = false;
 			do {
 				if (!$value) break;
 				if ($first_character != '"' && $first_character != "'") break;
 				if ($last_character != '"' && $last_character != "'") break;
 				$is_quoted = true;
 			} while (0);
 
 			if ($is_quoted) {
 				$value = str_replace('\n', "\n", $value);
 				if ($first_character == "'")
 					return strtr(substr ($value, 1, -1), array ('\'\'' => '\'', '\\\''=> '\''));
 				return strtr(substr ($value, 1, -1), array ('\\"' => '"', '\\\''=> '\''));
 			}
 
 			if (strpos($value, ' #') !== false && !$is_quoted)
 				$value = preg_replace('/\s+#(.+)$/','',$value);
 
 			if ($first_character == '[' && $last_character == ']') {
 				// Take out strings sequences and mappings
 				$innerValue = trim(substr ($value, 1, -1));
 				if ($innerValue === '') return array();
 				$explode = $this->_inlineEscape($innerValue);
 				// Propagate value array
 				$value  = array();
 				foreach ($explode as $v) {
 					$value[] = $this->_toType($v);
 				}
 				return $value;
 			}
 
 			if (strpos($value,': ')!==false && $first_character != '{') {
 				$array = explode(': ',$value);
 				$key   = trim($array[0]);
 				array_shift($array);
 				$value = trim(implode(': ',$array));
 				$value = $this->_toType($value);
 				return array($key => $value);
 			}
 
 			if ($first_character == '{' && $last_character == '}') {
 				$innerValue = trim(substr ($value, 1, -1));
 				if ($innerValue === '') return array();
 				// Inline Mapping
 				// Take out strings sequences and mappings
 				$explode = $this->_inlineEscape($innerValue);
 				// Propagate value array
 				$array = array();
 				foreach ($explode as $v) {
 					$SubArr = $this->_toType($v);
 					if (empty($SubArr)) continue;
 					if (is_array ($SubArr)) {
 						$array[key($SubArr)] = $SubArr[key($SubArr)]; continue;
 					}
 					$array[] = $SubArr;
 				}
 				return $array;
 			}
 
 			if ($value == 'null' || $value == 'NULL' || $value == 'Null' || $value == '' || $value == '~') {
 				return null;
 			}
 
 			if ( is_numeric($value) && preg_match ('/^(-|)[1-9]+[0-9]*$/', $value) ){
 				$intvalue = (int)$value;
 				if ($intvalue != PHP_INT_MAX && $intvalue != ~PHP_INT_MAX)
 					$value = $intvalue;
 				return $value;
 			}
 
 			if ( is_string($value) && preg_match('/^0[xX][0-9a-fA-F]+$/', $value)) {
 				// Hexadecimal value.
 				return hexdec($value);
 			}
 
 			$this->coerceValue($value);
 
 			if (is_numeric($value)) {
 				if ($value === '0') return 0;
 				if (rtrim ($value, 0) === $value)
 					$value = (float)$value;
 				return $value;
 			}
 
 			return $value;
 		}
 
 		/**
 		 * Used in inlines to check for more inlines or quoted strings
 		 * @access private
 		 * @return array
 		 */
 		private function _inlineEscape($inline) {
 			// There's gotta be a cleaner way to do this...
 			// While pure sequences seem to be nesting just fine,
 			// pure mappings and mappings with sequences inside can't go very
 			// deep.  This needs to be fixed.
 
 			$seqs = array();
 			$maps = array();
 			$saved_strings = array();
 			$saved_empties = array();
 
 			// Check for empty strings
 			$regex = '/("")|(\'\')/';
 			if (preg_match_all($regex,$inline,$strings)) {
 				$saved_empties = $strings[0];
 				$inline  = preg_replace($regex,'YAMLEmpty',$inline);
 			}
 			unset($regex);
 
 			// Check for strings
 			$regex = '/(?:(")|(?:\'))((?(1)[^"]+|[^\']+))(?(1)"|\')/';
 			if (preg_match_all($regex,$inline,$strings)) {
 				$saved_strings = $strings[0];
 				$inline  = preg_replace($regex,'YAMLString',$inline);
 			}
 			unset($regex);
 
 			// echo $inline;
 
 			$i = 0;
 			do {
 
 				// Check for sequences
 				while (preg_match('/\[([^{}\[\]]+)\]/U',$inline,$matchseqs)) {
 					$seqs[] = $matchseqs[0];
 					$inline = preg_replace('/\[([^{}\[\]]+)\]/U', ('YAMLSeq' . (count($seqs) - 1) . 's'), $inline, 1);
 				}
 
 				// Check for mappings
 				while (preg_match('/{([^\[\]{}]+)}/U',$inline,$matchmaps)) {
 					$maps[] = $matchmaps[0];
 					$inline = preg_replace('/{([^\[\]{}]+)}/U', ('YAMLMap' . (count($maps) - 1) . 's'), $inline, 1);
 				}
 
 				if ($i++ >= 10) break;
 
 			} while (strpos ($inline, '[') !== false || strpos ($inline, '{') !== false);
 
 			$explode = explode(',',$inline);
 			$explode = array_map('trim', $explode);
 			$stringi = 0; $i = 0;
 
 			while (1) {
 
 				// Re-add the sequences
 				if (!empty($seqs)) {
 					foreach ($explode as $key => $value) {
 						if (strpos($value,'YAMLSeq') !== false) {
 							foreach ($seqs as $seqk => $seq) {
 								$explode[$key] = str_replace(('YAMLSeq'.$seqk.'s'),$seq,$value);
 								$value = $explode[$key];
 							}
 						}
 					}
 				}
 
 				// Re-add the mappings
 				if (!empty($maps)) {
 					foreach ($explode as $key => $value) {
 						if (strpos($value,'YAMLMap') !== false) {
 							foreach ($maps as $mapk => $map) {
 								$explode[$key] = str_replace(('YAMLMap'.$mapk.'s'), $map, $value);
 								$value = $explode[$key];
 							}
 						}
 					}
 				}
 
 
 				// Re-add the strings
 				if (!empty($saved_strings)) {
 					foreach ($explode as $key => $value) {
 						while (strpos($value,'YAMLString') !== false) {
 							$explode[$key] = preg_replace('/YAMLString/',$saved_strings[$stringi],$value, 1);
 							unset($saved_strings[$stringi]);
 							++$stringi;
 							$value = $explode[$key];
 						}
 					}
 				}
 
 
 				// Re-add the empties
 				if (!empty($saved_empties)) {
 					foreach ($explode as $key => $value) {
 						while (strpos($value,'YAMLEmpty') !== false) {
 							$explode[$key] = preg_replace('/YAMLEmpty/', '', $value, 1);
 							$value = $explode[$key];
 						}
 					}
 				}
 
 				$finished = true;
 				foreach ($explode as $key => $value) {
 					if (strpos($value,'YAMLSeq') !== false) {
 						$finished = false; break;
 					}
 					if (strpos($value,'YAMLMap') !== false) {
 						$finished = false; break;
 					}
 					if (strpos($value,'YAMLString') !== false) {
 						$finished = false; break;
 					}
 					if (strpos($value,'YAMLEmpty') !== false) {
 						$finished = false; break;
 					}
 				}
 				if ($finished) break;
 
 				$i++;
 				if ($i > 10)
 					break; // Prevent infinite loops.
 			}
 
 
 			return $explode;
 		}
 
 		private function literalBlockContinues ($line, $lineIndent) {
 			if (!trim($line)) return true;
 			if (strlen($line) - strlen(ltrim($line)) > $lineIndent) return true;
 			return false;
 		}
 
 		private function referenceContentsByAlias ($alias) {
 			do {
 				if (!isset($this->SavedGroups[$alias])) { echo "Bad group name: $alias."; break; }
 				$groupPath = $this->SavedGroups[$alias];
 				$value = $this->result;
 				foreach ($groupPath as $k) {
 					$value = $value[$k];
 				}
 			} while (false);
 			return $value;
 		}
 
 		private function addArrayInline ($array, $indent) {
 			$CommonGroupPath = $this->path;
 			if (empty ($array)) return false;
 
 			foreach ($array as $k => $_) {
 				$this->addArray(array($k => $_), $indent);
 				$this->path = $CommonGroupPath;
 			}
 			return true;
 		}
 
 		private function addArray ($incoming_data, $incoming_indent) {
 
 			// print_r ($incoming_data);
 
 			if (count ($incoming_data) > 1)
 				return $this->addArrayInline ($incoming_data, $incoming_indent);
 
 			$key = key ($incoming_data);
 			$value = isset($incoming_data[$key]) ? $incoming_data[$key] : null;
 			if ($key === '__!YAMLZero') $key = '0';
 
 			if ($incoming_indent == 0 && !$this->_containsGroupAlias && !$this->_containsGroupAnchor) { // Shortcut for root-level values.
 				if ($key || $key === '' || $key === '0') {
 					$this->result[$key] = $value;
 				} else {
 					$this->result[] = $value; end ($this->result); $key = key ($this->result);
 				}
 				$this->path[$incoming_indent] = $key;
 				return;
 			}
 
 
 
 			$history = array();
 			// Unfolding inner array tree.
 			$history[] = $_arr = $this->result;
 			foreach ($this->path as $k) {
 				$history[] = $_arr = $_arr[$k];
 			}
 
 			if ($this->_containsGroupAlias) {
 				$value = $this->referenceContentsByAlias($this->_containsGroupAlias);
 				$this->_containsGroupAlias = false;
 			}
 
 
 			// Adding string or numeric key to the innermost level or $this->arr.
 			if (is_string($key) && $key == '<<') {
 				if (!is_array ($_arr)) { $_arr = array (); }
 
 				$_arr = array_merge ($_arr, $value);
 			} else if ($key || $key === '' || $key === '0') {
 				if (!is_array ($_arr))
 					$_arr = array ($key=>$value);
 				else
 					$_arr[$key] = $value;
 			} else {
 				if (!is_array ($_arr)) { $_arr = array ($value); $key = 0; }
 				else { $_arr[] = $value; end ($_arr); $key = key ($_arr); }
 			}
 
 			$reverse_path = array_reverse($this->path);
 			$reverse_history = array_reverse ($history);
 			$reverse_history[0] = $_arr;
 			$cnt = count($reverse_history) - 1;
 			for ($i = 0; $i < $cnt; $i++) {
 				$reverse_history[$i+1][$reverse_path[$i]] = $reverse_history[$i];
 			}
 			$this->result = $reverse_history[$cnt];
 
 			$this->path[$incoming_indent] = $key;
 
 			if ($this->_containsGroupAnchor) {
 				$this->SavedGroups[$this->_containsGroupAnchor] = $this->path;
 				if (is_array ($value)) {
 					$k = key ($value);
 					if (!is_int ($k)) {
 						$this->SavedGroups[$this->_containsGroupAnchor][$incoming_indent + 2] = $k;
 					}
 				}
 				$this->_containsGroupAnchor = false;
 			}
 
 		}
 
 		private static function startsLiteralBlock ($line) {
 			$lastChar = substr (trim($line), -1);
 			if ($lastChar != '>' && $lastChar != '|') return false;
 			if ($lastChar == '|') return $lastChar;
 			// HTML tags should not be counted as literal blocks.
 			if (preg_match ('#<.*?>$#', $line)) return false;
 			return $lastChar;
 		}
 
 		private static function greedilyNeedNextLine($line) {
 			$line = trim ($line);
 			if (!strlen($line)) return false;
 			if (substr ($line, -1, 1) == ']') return false;
 			if ($line[0] == '[') return true;
 			if (preg_match ('#^[^:]+?:\s*\[#', $line)) return true;
 			return false;
 		}
 
 		private function addLiteralLine ($literalBlock, $line, $literalBlockStyle, $indent = -1) {
 			$line = self::stripIndent($line, $indent);
 			if ($literalBlockStyle !== '|') {
 				$line = self::stripIndent($line);
 			}
 			$line = rtrim ($line, "\r\n\t ") . "\n";
 			if ($literalBlockStyle == '|') {
 				return $literalBlock . $line;
 			}
 			if (strlen($line) == 0)
 				return rtrim($literalBlock, ' ') . "\n";
 			if ($line == "\n" && $literalBlockStyle == '>') {
 				return rtrim ($literalBlock, " \t") . "\n";
 			}
 			if ($line != "\n")
 				$line = trim ($line, "\r\n ") . " ";
 			return $literalBlock . $line;
 		}
 
 		function revertLiteralPlaceHolder ($lineArray, $literalBlock) {
 			foreach ($lineArray as $k => $_) {
 				if (is_array($_))
 					$lineArray[$k] = $this->revertLiteralPlaceHolder ($_, $literalBlock);
 				else if (substr($_, -1 * strlen ($this->LiteralPlaceHolder)) == $this->LiteralPlaceHolder)
 					$lineArray[$k] = rtrim ($literalBlock, " \r\n");
 			}
 			return $lineArray;
 		}
 
 		private static function stripIndent ($line, $indent = -1) {
 			if ($indent == -1) $indent = strlen($line) - strlen(ltrim($line));
 			return substr ($line, $indent);
 		}
 
 		private function getParentPathByIndent ($indent) {
 			if ($indent == 0) return array();
 			$linePath = $this->path;
 			do {
 				end($linePath); $lastIndentInParentPath = key($linePath);
 				if ($indent <= $lastIndentInParentPath) array_pop ($linePath);
 			} while ($indent <= $lastIndentInParentPath);
 			return $linePath;
 		}
 
 
 		private function clearBiggerPathValues ($indent) {
 
 
 			if ($indent == 0) $this->path = array();
 			if (empty ($this->path)) return true;
 
 			foreach ($this->path as $k => $_) {
 				if ($k > $indent) unset ($this->path[$k]);
 			}
 
 			return true;
 		}
 
 
 		private static function isComment ($line) {
 			if (!$line) return false;
 			if ($line[0] == '#') return true;
 			if (trim($line, " \r\n\t") == '---') return true;
 			return false;
 		}
 
 		private static function isEmpty ($line) {
 			return (trim ($line) === '');
 		}
 
 
 		private function isArrayElement ($line) {
 			if (!$line || !is_scalar($line)) return false;
 			if (substr($line, 0, 2) != '- ') return false;
 			if (strlen ($line) > 3)
 				if (substr($line,0,3) == '---') return false;
 
 			return true;
 		}
 
 		private function isHashElement ($line) {
 			return strpos($line, ':');
 		}
 
 		private function isLiteral ($line) {
 			if ($this->isArrayElement($line)) return false;
 			if ($this->isHashElement($line)) return false;
 			return true;
 		}
 
 
 		private static function unquote ($value) {
 			if (!$value) return $value;
 			if (!is_string($value)) return $value;
 			if ($value[0] == '\'') return trim ($value, '\'');
 			if ($value[0] == '"') return trim ($value, '"');
 			return $value;
 		}
 
 		private function startsMappedSequence ($line) {
 			return (substr($line, 0, 2) == '- ' && substr ($line, -1, 1) == ':');
 		}
 
 		private function returnMappedSequence ($line) {
 			$array = array();
 			$key         = self::unquote(trim(substr($line,1,-1)));
 			$array[$key] = array();
 			$this->delayedPath = array(strpos ($line, $key) + $this->indent => $key);
 			return array($array);
 		}
 
 		private function checkKeysInValue($value) {
 			if (strchr('[{"\'', $value[0]) === false) {
 				if (strchr($value, ': ') !== false) {
 					throw new Exception('Too many keys: '.$value);
 				}
 			}
 		}
 
 		private function returnMappedValue ($line) {
 			$this->checkKeysInValue($line);
 			$array = array();
 			$key         = self::unquote (trim(substr($line,0,-1)));
 			$array[$key] = '';
 			return $array;
 		}
 
 		private function startsMappedValue ($line) {
 			return (substr ($line, -1, 1) == ':');
 		}
 
 		private function isPlainArray ($line) {
 			return ($line[0] == '[' && substr ($line, -1, 1) == ']');
 		}
 
 		private function returnPlainArray ($line) {
 			return $this->_toType($line);
 		}
 
 		private function returnKeyValuePair ($line) {
 			$array = array();
 			$key = '';
 			if (strpos ($line, ': ')) {
 				// It's a key/value pair most likely
 				// If the key is in double quotes pull it out
 				if (($line[0] == '"' || $line[0] == "'") && preg_match('/^(["\'](.*)["\'](\s)*:)/',$line,$matches)) {
 					$value = trim(str_replace($matches[1],'',$line));
 					$key   = $matches[2];
 				} else {
 					// Do some guesswork as to the key and the value
 					$explode = explode(': ', $line);
 					$key     = trim(array_shift($explode));
 					$value   = trim(implode(': ', $explode));
 					$this->checkKeysInValue($value);
 				}
 				// Set the type of the value.  Int, string, etc
 				$value = $this->_toType($value);
 
 				if ($key === '0') $key = '__!YAMLZero';
 				$array[$key] = $value;
 			} else {
 				$array = array ($line);
 			}
 			return $array;
 
 		}
 
 
 		private function returnArrayElement ($line) {
 			if (strlen($line) <= 1) return array(array()); // Weird %)
 			$array = array();
 			$value   = trim(substr($line,1));
 			$value   = $this->_toType($value);
 			if ($this->isArrayElement($value)) {
 				$value = $this->returnArrayElement($value);
 			}
 			$array[] = $value;
 			return $array;
 		}
 
 
 		private function nodeContainsGroup ($line) {
 			$symbolsForReference = 'A-z0-9_\-';
 			if (strpos($line, '&') === false && strpos($line, '*') === false) return false; // Please die fast ;-)
 			if ($line[0] == '&' && preg_match('/^(&['.$symbolsForReference.']+)/', $line, $matches)) return $matches[1];
 			if ($line[0] == '*' && preg_match('/^(\*['.$symbolsForReference.']+)/', $line, $matches)) return $matches[1];
 			if (preg_match('/(&['.$symbolsForReference.']+)$/', $line, $matches)) return $matches[1];
 			if (preg_match('/(\*['.$symbolsForReference.']+$)/', $line, $matches)) return $matches[1];
 			if (preg_match ('#^\s*<<\s*:\s*(\*[^\s]+).*$#', $line, $matches)) return $matches[1];
 			return false;
 
 		}
 
 		private function addGroup ($line, $group) {
 			if ($group[0] == '&') $this->_containsGroupAnchor = substr ($group, 1);
 			if ($group[0] == '*') $this->_containsGroupAlias = substr ($group, 1);
 			//print_r ($this->path);
 		}
 
 		private function stripGroup ($line, $group) {
 			$line = trim(str_replace($group, '', $line));
 			return $line;
 		}
 	}
 }
 
 // Enable use of Spyc from command line
 // The syntax is the following: php Spyc.php spyc.yaml
 
 do {
 	if (PHP_SAPI != 'cli') break;
 	if (empty ($_SERVER['argc']) || $_SERVER['argc'] < 2) break;
 	if (empty ($_SERVER['PHP_SELF']) || FALSE === strpos ($_SERVER['PHP_SELF'], 'Spyc.php') ) break;
 	$file = $argv[1];
 	echo json_encode (spyc_load_file ($file));
 } while (0);