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PocketMine-MP/classes/Spyc.class.php
Shoghi Cervantes Pueyo 618e9c58c7 Added YAML configuration handling, and info getting methods
2012-12-26 03:02:16 +01:00

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<?php
/**
The MIT License
Copyright (c) 2011 Vladimir Andersen
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
* Spyc -- A Simple PHP YAML Class
* @version 0.5
* @author Vlad Andersen <vlad.andersen@gmail.com>
* @author Chris Wanstrath <chris@ozmm.org>
* @link http://code.google.com/p/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);
}
}
/**
* 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;
/**#@+
* @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;
$previous_key = -1;
foreach ($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, $source_array = null) {
if (is_array($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($value, "!") === 0 ||
substr ($value, -1, 1) == ':')
) {
$value = $this->_doLiteralBlock($value,$indent);
} else {
$value = $this->_doFolding($value,$indent);
}
if ($value === array()) $value = '[ ]';
if (in_array ($value, array ('true', 'TRUE', 'false', 'FALSE', 'y', 'Y', 'n', 'N', 'null', 'NULL'), true)) {
$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 = '|';
$indent += $this->_dumpIndent;
$spaces = str_repeat(' ',$indent);
foreach ($exploded as $line) {
$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 . '"';
}
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();
$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);
}
$i--;
}
while (++$i < $cnt && self::greedilyNeedNextLine($line)) {
$line = rtrim ($line, " \n\t\r") . ' ' . ltrim ($Source[$i], " \t");
}
$i--;
if (strpos ($line, '#')) {
if (strpos ($line, '"') === false && strpos ($line, "'") === false)
$line = preg_replace('/\s+#(.+)$/','',$line);
}
$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($input))
return file($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 null;
$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)
return strtr(substr ($value, 1, -1), array ('\\"' => '"', '\'\'' => '\'', '\\\'' => '\''));
if (strpos($value, ' #') !== false && !$is_quoted)
$value = preg_replace('/\s+#(.+)$/','',$value);
if (!$is_quoted) $value = str_replace('\n', "\n", $value);
if ($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)
$value = $intvalue;
return $value;
}
if (in_array($value,
array('true', 'on', '+', 'yes', 'y', 'True', 'TRUE', 'On', 'ON', 'YES', 'Yes', 'Y'))) {
return true;
}
if (in_array(strtolower($value),
array('false', 'off', '-', 'no', 'n'))) {
return false;
}
if (is_numeric($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();
// 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);
$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);
$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];
}
}
}
$finished = true;
foreach ($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) {
$finished = false; break;
}
}
if ($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 (!$line) return false;
if ($line[0] != '-') 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 ($line[0] == '-' && substr ($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 returnMappedValue ($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);
$key = trim($explode[0]);
array_shift($explode);
$value = trim(implode(':',$explode));
}
// 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);
$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;
}
}
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