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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 /** * 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; /**#@+ * @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 $input Path of YAML file or string containing YAML */ public static function YAMLLoad($input) { $Spyc = new Spyc; 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 $input String containing YAML */ public static function YAMLLoadString($input) { $Spyc = new Spyc; 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 $array PHP array * @param int $indent Pass in false to use the default, which is 2 * @param int $wordwrap Pass in 0 for no wordwrap, false for default (40) */ public static function YAMLDump($array,$indent = false,$wordwrap = false) { $spyc = new Spyc; return $spyc->dump($array,$indent,$wordwrap); } /** * 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) { // 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 $string = "---\n"; // Start at the base of the array and move through it. if ($array) { $array = (array)$array; $first_key = key($array); $previous_key = -1; foreach ($array as $key => $value) { $string .= $this->_yamlize($key,$value,0,$previous_key, $first_key); $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, $first_key = 0) { if (is_array($value)) { if (empty ($value)) return $this->_dumpNode($key, array(), $indent, $previous_key, $first_key); // It has children. What to do? // Make it the right kind of item $string = $this->_dumpNode($key, NULL, $indent, $previous_key, $first_key); // 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); } 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; $first_key = key($array); foreach ($array as $key => $value) { $string .= $this->_yamlize($key, $value, $indent, $previous_key, $first_key); $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, $first_key = 0) { // do some folding here, for blocks if (is_string ($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($value,"}") !== false) || substr ($value, -1, 1) == ':')) { $value = $this->_doLiteralBlock($value,$indent); } else { $value = $this->_doFolding($value,$indent); if (is_bool($value)) { $value = ($value) ? "true" : "false"; } } if ($value === array()) $value = '[ ]'; $spaces = str_repeat(' ',$indent); if (is_int($key) && $key - 1 == $previous_key && $first_key===0) { // 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) { $key = '"' . $key . '"'; } $string = $spaces.$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,$indent) { if (strpos($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 = '|'; $indent += $this->_dumpIndent; $spaces = str_repeat(' ',$indent); foreach ($exploded as $line) { $newValue .= "\n" . $spaces . trim($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 = '"' . $value . '"'; } return $value; } // LOADING FUNCTIONS private function __load($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 ('', $Source)); return is_array($array) ? $array : array(); } $this->path = array(); |