Файл: system/libs/spyc.class.php
Строк: 1153
<?php
/**
* Spyc -- A Simple PHP YAML Class
* @version 0.5
* @author Vlad Andersen <vlad.andersen@gmail.com>
* @author Chris Wanstrath <chris@ozmm.org>
* @modifed InstantCMS Team
* @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
*/
/**
* 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:
* @package Spyc
*/
class Spyc {
const REMPTY = " ";
/**
* 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>
* $array = Spyc::YAMLLoadString("---n0: hello worldn");
* print_r($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 $value;
}
private function __load($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, " ntr") . ' ' . 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) {
$line = trim($line);
if (!$line){ return 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 && $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) $value;
if (is_infinite($__value)) {
$value = (string) $value;
} else {
$value = $__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, $incoming_indent) {
if (count($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, "rnt ") . "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, "rn ") . " ";
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, " rn");
}
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($line, " rnt") == '---')
return true;
return false;
}
private static function isEmpty($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);
}
private function stripGroup($line, $group) {
$line = trim(str_replace($group, '', $line));
return $line;
}
}