* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
- /**
- * A node, used by Spyc for parsing YAML.
- * @ingroup API
- */
- class YAMLNode {
- /**#@+
- * @access public
- * @var string
- */
- var $parent;
- var $id;
- /**#@-*/
- /**
- * @access public
- * @var mixed
- */
- var $data;
- /**
- * @access public
- * @var int
- */
- var $indent;
- /**
- * @access public
- * @var bool
- */
- var $children = false;
-
- /**
- * The constructor assigns the node a unique ID.
- * @access public
- * @return void
- */
- function YAMLNode() {
- $this->id = uniqid('');
- }
- }
-
/**
* The Simple PHP YAML Class.
*
*/
class Spyc {
- /**
- * 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>
- * $array = Spyc::YAMLLoad('lucky.yml');
- * print_r($array);
- * </code>
- * @access public
- * @return array
- * @param string $input Path of YAML file or string containing YAML
- */
- function YAMLLoad($input) {
- $spyc = new Spyc;
- return $spyc->load($input);
- }
-
/**
* Dump YAML from PHP array statically
*
return $spyc->dump($array,$indent,$wordwrap);
}
- /**
- * Load YAML into a PHP array from an instantiated object
- *
- * The load method, when supplied with a YAML stream (string or file path),
- * will do its best to convert the YAML into a PHP array. Pretty simple.
- * Usage:
- * <code>
- * $parser = new Spyc;
- * $array = $parser->load('lucky.yml');
- * print_r($array);
- * </code>
- * @access public
- * @return array
- * @param string $input Path of YAML file or string containing YAML
- */
- function load($input) {
- // See what type of input we're talking about
- // If it's not a file, assume it's a string
- if (!empty($input) && (strpos($input, "\n") === false)
- && file_exists($input)) {
- $yaml = file($input);
- } else {
- $yaml = explode("\n",$input);
- }
- // Initiate some objects and values
- $base = new YAMLNode;
- $base->indent = 0;
- $this->_lastIndent = 0;
- $this->_lastNode = $base->id;
- $this->_inBlock = false;
- $this->_isInline = false;
-
- foreach ($yaml as $linenum => $line) {
- $ifchk = trim($line);
-
- // If the line starts with a tab (instead of a space), throw a fit.
- if (preg_match('/^(\t)+(\w+)/', $line)) {
- $err = 'ERROR: Line '. ($linenum + 1) .' in your input YAML begins'.
- ' with a tab. YAML only recognizes spaces. Please reformat.';
- die($err);
- }
-
- if ($this->_inBlock === false && empty($ifchk)) {
- continue;
- } elseif ($this->_inBlock == true && empty($ifchk)) {
- $last =& $this->_allNodes[$this->_lastNode];
- $last->data[key($last->data)] .= "\n";
- } elseif ($ifchk{0} != '#' && substr($ifchk,0,3) != '---') {
- // Create a new node and get its indent
- $node = new YAMLNode;
- $node->indent = $this->_getIndent($line);
-
- // Check where the node lies in the hierarchy
- if ($this->_lastIndent == $node->indent) {
- // If we're in a block, add the text to the parent's data
- if ($this->_inBlock === true) {
- $parent =& $this->_allNodes[$this->_lastNode];
- $parent->data[key($parent->data)] .= trim($line).$this->_blockEnd;
- } else {
- // The current node's parent is the same as the previous node's
- if (isset($this->_allNodes[$this->_lastNode])) {
- $node->parent = $this->_allNodes[$this->_lastNode]->parent;
- }
- }
- } elseif ($this->_lastIndent < $node->indent) {
- if ($this->_inBlock === true) {
- $parent =& $this->_allNodes[$this->_lastNode];
- $parent->data[key($parent->data)] .= trim($line).$this->_blockEnd;
- } elseif ($this->_inBlock === false) {
- // The current node's parent is the previous node
- $node->parent = $this->_lastNode;
-
- // If the value of the last node's data was > or | we need to
- // start blocking i.e. taking in all lines as a text value until
- // we drop our indent.
- $parent =& $this->_allNodes[$node->parent];
- $this->_allNodes[$node->parent]->children = true;
- if (is_array($parent->data)) {
- $chk = $parent->data[key($parent->data)];
- if ($chk === '>') {
- $this->_inBlock = true;
- $this->_blockEnd = ' ';
- $parent->data[key($parent->data)] =
- str_replace('>','',$parent->data[key($parent->data)]);
- $parent->data[key($parent->data)] .= trim($line).' ';
- $this->_allNodes[$node->parent]->children = false;
- $this->_lastIndent = $node->indent;
- } elseif ($chk === '|') {
- $this->_inBlock = true;
- $this->_blockEnd = "\n";
- $parent->data[key($parent->data)] =
- str_replace('|','',$parent->data[key($parent->data)]);
- $parent->data[key($parent->data)] .= trim($line)."\n";
- $this->_allNodes[$node->parent]->children = false;
- $this->_lastIndent = $node->indent;
- }
- }
- }
- } elseif ($this->_lastIndent > $node->indent) {
- // Any block we had going is dead now
- if ($this->_inBlock === true) {
- $this->_inBlock = false;
- if ($this->_blockEnd = "\n") {
- $last =& $this->_allNodes[$this->_lastNode];
- $last->data[key($last->data)] =
- trim($last->data[key($last->data)]);
- }
- }
-
- // We don't know the parent of the node so we have to find it
- // foreach ($this->_allNodes as $n) {
- foreach ($this->_indentSort[$node->indent] as $n) {
- if ($n->indent == $node->indent) {
- $node->parent = $n->parent;
- }
- }
- }
-
- if ($this->_inBlock === false) {
- // Set these properties with information from our current node
- $this->_lastIndent = $node->indent;
- // Set the last node
- $this->_lastNode = $node->id;
- // Parse the YAML line and return its data
- $node->data = $this->_parseLine($line);
- // Add the node to the master list
- $this->_allNodes[$node->id] = $node;
- // Add a reference to the node in an indent array
- $this->_indentSort[$node->indent][] =& $this->_allNodes[$node->id];
- // Add a reference to the node in a References array if this node
- // has a YAML reference in it.
- if (
- ( (is_array($node->data)) &&
- isset($node->data[key($node->data)]) &&
- (!is_array($node->data[key($node->data)])) )
- &&
- ( (preg_match('/^&([^ ]+)/',$node->data[key($node->data)]))
- ||
- (preg_match('/^\*([^ ]+)/',$node->data[key($node->data)])) )
- ) {
- $this->_haveRefs[] =& $this->_allNodes[$node->id];
- } elseif (
- ( (is_array($node->data)) &&
- isset($node->data[key($node->data)]) &&
- (is_array($node->data[key($node->data)])) )
- ) {
- // Incomplete reference making code. Ugly, needs cleaned up.
- foreach ($node->data[key($node->data)] as $d) {
- if ( !is_array($d) &&
- ( (preg_match('/^&([^ ]+)/',$d))
- ||
- (preg_match('/^\*([^ ]+)/',$d)) )
- ) {
- $this->_haveRefs[] =& $this->_allNodes[$node->id];
- }
- }
- }
- }
- }
- }
- unset($node);
-
- // Here we travel through node-space and pick out references (& and *)
- $this->_linkReferences();
-
- // Build the PHP array out of node-space
- $trunk = $this->_buildArray();
- return $trunk;
- }
-
/**
* Dump PHP array to YAML
*
}
return $value;
}
-
- /* Methods used in loading */
-
- /**
- * Finds and returns the indentation of a YAML line
- * @access private
- * @return int
- * @param string $line A line from the YAML file
- */
- function _getIndent($line) {
- $match = array();
- preg_match('/^\s{1,}/',$line,$match);
- if (!empty($match[0])) {
- $indent = substr_count($match[0],' ');
- } else {
- $indent = 0;
- }
- return $indent;
- }
-
- /**
- * Parses YAML code and returns an array for a node
- * @access private
- * @return array
- * @param string $line A line from the YAML file
- */
- function _parseLine($line) {
- $line = trim($line);
-
- $array = array();
-
- if (preg_match('/^-(.*):$/',$line)) {
- // It's a mapped sequence
- $key = trim(substr(substr($line,1),0,-1));
- $array[$key] = '';
- } elseif ($line[0] == '-' && substr($line,0,3) != '---') {
- // It's a list item but not a new stream
- if (strlen($line) > 1) {
- $value = trim(substr($line,1));
- // Set the type of the value. Int, string, etc
- $value = $this->_toType($value);
- $array[] = $value;
- } else {
- $array[] = array();
- }
- } elseif (preg_match('/^(.+):/',$line,$key)) {
- // It's a key/value pair most likely
- // If the key is in double quotes pull it out
- $matches = array();
- if (preg_match('/^(["\'](.*)["\'](\s)*:)/',$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 (empty($key)) {
- $array[] = $value;
- } else {
- $array[$key] = $value;
- }
- }
- return $array;
- }
-
- /**
- * Finds the type of the passed value, returns the value as the new type.
- * @access private
- * @param string $value
- * @return mixed
- */
- function _toType($value) {
- $matches = array();
- if (preg_match('/^("(.*)"|\'(.*)\')/',$value,$matches)) {
- $value = (string)preg_replace('/(\'\'|\\\\\')/',"'",end($matches));
- $value = preg_replace('/\\\\"/','"',$value);
- } elseif (preg_match('/^\\[(.+)\\]$/',$value,$matches)) {
- // Inline Sequence
-
- // Take out strings sequences and mappings
- $explode = $this->_inlineEscape($matches[1]);
-
- // Propogate value array
- $value = array();
- foreach ($explode as $v) {
- $value[] = $this->_toType($v);
- }
- } elseif (strpos($value,': ')!==false && !preg_match('/^{(.+)/',$value)) {
- // It's a map
- $array = explode(': ',$value);
- $key = trim($array[0]);
- array_shift($array);
- $value = trim(implode(': ',$array));
- $value = $this->_toType($value);
- $value = array($key => $value);
- } elseif (preg_match("/{(.+)}$/",$value,$matches)) {
- // Inline Mapping
-
- // Take out strings sequences and mappings
- $explode = $this->_inlineEscape($matches[1]);
-
- // Propogate value array
- $array = array();
- foreach ($explode as $v) {
- $array = $array + $this->_toType($v);
- }
- $value = $array;
- } elseif (strtolower($value) == 'null' or $value === '' or $value == '~') {
- $value = NULL;
- } elseif (ctype_digit($value)) {
- $value = (int)$value;
- } elseif (in_array(strtolower($value),
- array('true', 'on', '+', 'yes', 'y'))) {
- $value = TRUE;
- } elseif (in_array(strtolower($value),
- array('false', 'off', '-', 'no', 'n'))) {
- $value = FALSE;
- } elseif (is_numeric($value)) {
- $value = (float)$value;
- } else {
- // Just a normal string, right?
- $value = trim(preg_replace('/#(.+)$/','',$value));
- }
-
- return $value;
- }
-
- /**
- * Used in inlines to check for more inlines or quoted strings
- * @access private
- * @return array
- */
- function _inlineEscape($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.
-
- // Check for strings
- $regex = '/(?:(")|(?:\'))((?(1)[^"]+|[^\']+))(?(1)"|\')/';
- $strings = array();
- if (preg_match_all($regex,$inline,$strings)) {
- $saved_strings[] = $strings[0][0];
- $inline = preg_replace($regex,'YAMLString',$inline);
- }
- unset($regex);
-
- // Check for sequences
- $seqs = array();
- if (preg_match_all('/\[(.+)\]/U',$inline,$seqs)) {
- $inline = preg_replace('/\[(.+)\]/U','YAMLSeq',$inline);
- $seqs = $seqs[0];
- }
-
- // Check for mappings
- $maps = array();
- if (preg_match_all('/{(.+)}/U',$inline,$maps)) {
- $inline = preg_replace('/{(.+)}/U','YAMLMap',$inline);
- $maps = $maps[0];
- }
-
- $explode = explode(', ',$inline);
-
- // Re-add the strings
- if (!empty($saved_strings)) {
- $i = 0;
- foreach ($explode as $key => $value) {
- if (strpos($value,'YAMLString')) {
- $explode[$key] = str_replace('YAMLString',$saved_strings[$i],$value);
- ++$i;
- }
- }
- }
-
- // Re-add the sequences
- if (!empty($seqs)) {
- $i = 0;
- foreach ($explode as $key => $value) {
- if (strpos($value,'YAMLSeq') !== false) {
- $explode[$key] = str_replace('YAMLSeq',$seqs[$i],$value);
- ++$i;
- }
- }
- }
-
- // Re-add the mappings
- if (!empty($maps)) {
- $i = 0;
- foreach ($explode as $key => $value) {
- if (strpos($value,'YAMLMap') !== false) {
- $explode[$key] = str_replace('YAMLMap',$maps[$i],$value);
- ++$i;
- }
- }
- }
-
- return $explode;
- }
-
- /**
- * Builds the PHP array from all the YAML nodes we've gathered
- * @access private
- * @return array
- */
- function _buildArray() {
- $trunk = array();
-
- if (!isset($this->_indentSort[0])) {
- return $trunk;
- }
-
- foreach ($this->_indentSort[0] as $n) {
- if (empty($n->parent)) {
- $this->_nodeArrayizeData($n);
- // Check for references and copy the needed data to complete them.
- $this->_makeReferences($n);
- // Merge our data with the big array we're building
- $trunk = $this->_array_kmerge($trunk,$n->data);
- }
- }
-
- return $trunk;
- }
-
- /**
- * Traverses node-space and sets references (& and *) accordingly
- * @access private
- * @return bool
- */
- function _linkReferences() {
- if (is_array($this->_haveRefs)) {
- foreach ($this->_haveRefs as $node) {
- if (!empty($node->data)) {
- $key = key($node->data);
- // If it's an array, don't check.
- if (is_array($node->data[$key])) {
- foreach ($node->data[$key] as $k => $v) {
- $this->_linkRef($node,$key,$k,$v);
- }
- } else {
- $this->_linkRef($node,$key);
- }
- }
- }
- }
- return true;
- }
-
- function _linkRef(&$n,$key,$k = NULL,$v = NULL) {
- if (empty($k) && empty($v)) {
- // Look for &refs
- $matches = array();
- if (preg_match('/^&([^ ]+)/',$n->data[$key],$matches)) {
- // Flag the node so we know it's a reference
- $this->_allNodes[$n->id]->ref = substr($matches[0],1);
- $this->_allNodes[$n->id]->data[$key] =
- substr($n->data[$key],strlen($matches[0])+1);
- // Look for *refs
- } elseif (preg_match('/^\*([^ ]+)/',$n->data[$key],$matches)) {
- $ref = substr($matches[0],1);
- // Flag the node as having a reference
- $this->_allNodes[$n->id]->refKey = $ref;
- }
- } elseif (!empty($k) && !empty($v)) {
- if (preg_match('/^&([^ ]+)/',$v,$matches)) {
- // Flag the node so we know it's a reference
- $this->_allNodes[$n->id]->ref = substr($matches[0],1);
- $this->_allNodes[$n->id]->data[$key][$k] =
- substr($v,strlen($matches[0])+1);
- // Look for *refs
- } elseif (preg_match('/^\*([^ ]+)/',$v,$matches)) {
- $ref = substr($matches[0],1);
- // Flag the node as having a reference
- $this->_allNodes[$n->id]->refKey = $ref;
- }
- }
- }
-
- /**
- * Finds the children of a node and aids in the building of the PHP array
- * @access private
- * @param int $nid The id of the node whose children we're gathering
- * @return array
- */
- function _gatherChildren($nid) {
- $return = array();
- $node =& $this->_allNodes[$nid];
- foreach ($this->_allNodes as $z) {
- if ($z->parent == $node->id) {
- // We found a child
- $this->_nodeArrayizeData($z);
- // Check for references
- $this->_makeReferences($z);
- // Merge with the big array we're returning
- // The big array being all the data of the children of our parent node
- $return = $this->_array_kmerge($return,$z->data);
- }
- }
- return $return;
- }
-
- /**
- * Turns a node's data and its children's data into a PHP array
- *
- * @access private
- * @param array $node The node which you want to arrayize
- * @return boolean
- */
- function _nodeArrayizeData(&$node) {
- if (is_array($node->data) && $node->children == true) {
- // This node has children, so we need to find them
- $childs = $this->_gatherChildren($node->id);
- // We've gathered all our children's data and are ready to use it
- $key = key($node->data);
- $key = empty($key) ? 0 : $key;
- // If it's an array, add to it of course
- if (is_array($node->data[$key])) {
- $node->data[$key] = $this->_array_kmerge($node->data[$key],$childs);
- } else {
- $node->data[$key] = $childs;
- }
- } elseif (!is_array($node->data) && $node->children == true) {
- // Same as above, find the children of this node
- $childs = $this->_gatherChildren($node->id);
- $node->data = array();
- $node->data[] = $childs;
- }
-
- // We edited $node by reference, so just return true
- return true;
- }
-
- /**
- * Traverses node-space and copies references to / from this object.
- * @access private
- * @param object $z A node whose references we wish to make real
- * @return bool
- */
- function _makeReferences(&$z) {
- // It is a reference
- if (isset($z->ref)) {
- $key = key($z->data);
- // Copy the data to this object for easy retrieval later
- $this->ref[$z->ref] =& $z->data[$key];
- // It has a reference
- } elseif (isset($z->refKey)) {
- if (isset($this->ref[$z->refKey])) {
- $key = key($z->data);
- // Copy the data from this object to make the node a real reference
- $z->data[$key] =& $this->ref[$z->refKey];
- }
- }
- return true;
- }
-
-
- /**
- * Merges arrays and maintains numeric keys.
- *
- * An ever-so-slightly modified version of the array_kmerge() function posted
- * to php.net by mail at nospam dot iaindooley dot com on 2004-04-08.
- *
- * http://www.php.net/manual/en/function.array-merge.php#41394
- *
- * @access private
- * @param array $arr1
- * @param array $arr2
- * @return array
- */
- function _array_kmerge($arr1,$arr2) {
- if(!is_array($arr1))
- $arr1 = array();
-
- if(!is_array($arr2))
- $arr2 = array();
-
- $keys1 = array_keys($arr1);
- $keys2 = array_keys($arr2);
- $keys = array_merge($keys1,$keys2);
- $vals1 = array_values($arr1);
- $vals2 = array_values($arr2);
- $vals = array_merge($vals1,$vals2);
- $ret = array();
-
- foreach($keys as $key) {
- list( /* unused */ ,$val) = each($vals);
- // This is the good part! If a key already exists, but it's part of a
- // sequence (an int), just keep addin numbers until we find a fresh one.
- if (isset($ret[$key]) and is_int($key)) {
- while (array_key_exists($key, $ret)) {
- $key++;
- }
- }
- $ret[$key] = $val;
- }
-
- return $ret;
- }
}
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