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<?php |
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namespace Dallgoot\Yaml; |
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use Dallgoot\Yaml\Yaml as Y; |
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use Dallgoot\Yaml\Regex as R; |
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/** |
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* TODO |
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* @category tag in class comment |
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* @package tag in class comment |
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* @author tag in class comment |
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* @license tag in class comment |
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*/ |
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final class Node |
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{ |
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/** @var int */ |
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public $indent = -1; |
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/** @var int */ |
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public $line; |
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/** @var int */ |
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public $type; |
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/** @var null|string|boolean */ |
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public $identifier; |
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/** @var Node|NodeList|null|string */ |
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public $value; |
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/** @var null|Node */ |
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private $parent; |
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public function __construct($nodeString = null, $line = null) |
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{ |
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$this->line = $line; |
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if (is_null($nodeString)) { |
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$this->type = Y::ROOT; |
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} else { |
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$this->parse($nodeString); |
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} |
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} |
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/** |
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* Sets the parent of the current Node |
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* @param Node $node The node |
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* |
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* @return Node|self The currentNode |
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*/ |
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public function setParent(Node $node):Node |
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{ |
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$this->parent = $node; |
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return $this; |
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} |
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/** |
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* Gets the ancestor with specified $indent or the direct $parent OR the current Node itself |
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* |
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* @param int|null $indent The indent |
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* |
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* @return Node|self The parent. |
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*/ |
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public function getParent(int $indent = null):Node |
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{ |
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if (!is_int($indent)) return $this->parent ?? $this; |
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$cursor = $this; |
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while ($cursor instanceof Node && $cursor->indent >= $indent) { |
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$cursor = $cursor->parent; |
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} |
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return $cursor; |
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} |
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/** |
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* Set the value for the current Node : |
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* - if value is null , then value = $child (Node) |
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* - if value is Node, then value is a NodeList with (previous value AND $child) |
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* - if value is a NodeList, simply push $child into |
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* |
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* @param Node $child The child |
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*/ |
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public function add(Node $child):void |
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{ |
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$child->setParent($this); |
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$current = $this->value; |
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if (is_null($current)) { |
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$this->value = $child; |
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} else { |
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if ($current instanceof Node) { |
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$this->value = new NodeList(); |
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$this->value->push($current); |
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} |
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$this->value->push($child); |
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//modify type according to child |
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if ($child->type & (Y::COMMENT | Y::KEY)) $this->value->type = Y::MAPPING; |
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if ($child->type & Y::ITEM) $this->value->type = Y::SEQUENCE; |
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if ($this->type & Y::LITTERALS) $this->value->type = $this->type; |
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} |
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} |
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public function getDeepestNode():Node |
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{ |
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$cursor = $this; |
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while ($cursor->value instanceof Node) { |
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$cursor = $cursor->value; |
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} |
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return $cursor; |
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} |
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/** |
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* Parses the string (assumed to be a line from a valid YAML) |
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* |
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* @param string $nodeString The node string |
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* |
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* @return Node|self ( description_of_the_return_value ) |
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*/ |
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public function parse(string $nodeString):Node |
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{ |
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$nodeValue = preg_replace("/^\t+/m", " ", $nodeString); //permissive to tabs but replacement |
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$this->indent = strspn($nodeValue, ' '); |
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$nodeValue = ltrim($nodeValue); |
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if ($nodeValue === '') { |
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$this->type = Y::BLANK; |
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// $this->indent = 0; // remove if no bugs |
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} elseif (substr($nodeValue, 0, 3) === '...') {//TODO: can have something on same line ? |
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$this->type = Y::DOC_END; |
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} elseif (preg_match(R::KEY, $nodeValue, $matches)) { |
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$this->onKey($matches); |
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} else {//NOTE: can be of another type according to parent |
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list($this->type, $value) = $this->define($nodeValue); |
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is_object($value) ? $this->add($value) : $this->value = $value; |
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} |
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return $this; |
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} |
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/** |
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* Set the type and value according to first character |
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* |
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* @param string $nodeValue The node value |
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* @return array contains [node->type, node->value] |
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*/ |
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private function define($nodeValue):array |
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{ |
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$v = substr($nodeValue, 1); |
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$first = $nodeValue[0]; |
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if (in_array($first, ['"', "'"])) { |
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$type = R::isProperlyQuoted($nodeValue) ? Y::QUOTED : Y::PARTIAL; |
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return [$type, $nodeValue]; |
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} |
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if (in_array($first, ['{', '['])) return $this->onObject($nodeValue); |
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if (in_array($first, ['!', '&', '*'])) return $this->onNodeAction($nodeValue); |
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// Note : php don't like '?' as an array key -_- |
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if($first === '?') return [Y::SET_KEY, empty($v) ? null : new Node(ltrim($v), $this->line)]; |
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$characters = [ '#' => [Y::COMMENT, ltrim($v)], |
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"-" => $this->onHyphen($nodeValue), |
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'%' => [Y::DIRECTIVE, ltrim($v)], |
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':' => [Y::SET_VALUE, empty($v) ? null : new Node(ltrim($v), $this->line)], |
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'>' => [Y::LITT_FOLDED, null], |
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'|' => [Y::LITT, null] |
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]; |
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if (array_key_exists($first, $characters)) { |
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return $characters[$first]; |
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} |
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return [Y::SCALAR, $nodeValue]; |
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} |
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/** |
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* Process when a "key: value" syntax is found in the parsed string |
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* Note : key is match 1, value is match 2 as per regex from R::KEY |
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* @param array $matches The matches provided by 'preg_match' function |
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*/ |
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private function onKey(array $matches):void |
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{ |
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$this->type = Y::KEY; |
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$this->identifier = trim($matches[1]); |
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$value = isset($matches[2]) ? trim($matches[2]) : null; |
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if (!empty($value)) { |
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$n = new Node($value, $this->line); |
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$hasComment = strpos($value, ' #'); |
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if (!is_bool($hasComment)) { |
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$tmpNode = new Node(trim(substr($value, 0, $hasComment)), $this->line); |
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if ($tmpNode->type !== Y::PARTIAL) { |
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$comment = new Node(trim(substr($value, $hasComment + 1)), $this->line); |
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$comment->identifier = true; //to specify it is NOT a fullline comment |
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$this->add($comment); |
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$n = $tmpNode; |
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} |
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} |
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$n->indent = $this->indent + strlen($this->identifier); |
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$this->add($n); |
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} |
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} |
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/** |
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* Determines the correct type and value when a short object/array syntax is found |
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* |
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* @param string $value The value assumed to start with { or ( or characters |
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* |
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* @return array array with the type and $value (unchanged for now) |
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* @see self:define |
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*/ |
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private function onObject($value):array |
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{ |
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json_decode($value, false, 512, JSON_PARTIAL_OUTPUT_ON_ERROR|JSON_UNESCAPED_SLASHES); |
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if (json_last_error() === JSON_ERROR_NONE) return [Y::JSON, $value]; |
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if (preg_match(R::MAPPING, $value)) return [Y::COMPACT_MAPPING, $value]; |
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if (preg_match(R::SEQUENCE, $value)) return [Y::COMPACT_SEQUENCE, $value]; |
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return [Y::PARTIAL, $value]; |
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} |
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/** |
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* Determines type and value when an hyphen "-" is found |
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* |
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* @param string $nodeValue The node value |
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* |
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* @return array array with the type and $value |
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*/ |
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private function onHyphen($nodeValue):array |
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{ |
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if (substr($nodeValue, 0, 3) === '---') { |
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$rest = trim(substr($nodeValue, 3)); |
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if (empty($rest)) return [Y::DOC_START, null]; |
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$n = new Node($rest, $this->line); |
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$n->indent = $this->indent + 4; |
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return [Y::DOC_START, $n->setParent($this)]; |
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} |
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if (preg_match(R::ITEM, $nodeValue, $matches)) { |
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if (isset($matches[1]) && !empty(trim($matches[1]))) { |
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$n = new Node(trim($matches[1]), $this->line); |
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return [Y::ITEM, $n->setParent($this)]; |
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} |
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return [Y::ITEM, null]; |
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} |
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return [Y::SCALAR, $nodeValue]; |
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} |
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/** |
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* Determines the type and value according to $nodeValue when one of these characters is found : !,&,* |
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* |
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* @param string $nodeValue The node value |
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* |
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* @return array array with the type and $value |
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* @see self::define |
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*/ |
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private function onNodeAction($nodeValue):array |
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{ |
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// TODO: handle tags like <tag:clarkevans.com,2002:invoice> |
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$v = substr($nodeValue, 1); |
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$type = ['!' => Y::TAG, '&' => Y::REF_DEF, '*' => Y::REF_CALL][$nodeValue[0]]; |
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$pos = strpos($v, ' '); |
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$this->identifier = is_bool($pos) ? $v : strstr($v, ' ', true); |
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$n = is_bool($pos) ? null : (new Node(trim(substr($nodeValue, $pos + 1)), $this->line))->setParent($this); |
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return [$type, $n]; |
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} |
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/** |
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* Returns the correct PHP datatype for the value of the current Node |
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* |
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* @return mixed The value as PHP type : scalar, array or Compact, DateTime |
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*/ |
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public function getPhpValue() |
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{ |
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$v = &$this->value; |
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if (is_null($v)) return null; |
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if ($this->type & (Y::REF_CALL | Y::SCALAR)) return self::getScalar($v); |
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if ($this->type & (Y::COMPACT_MAPPING | Y::COMPACT_SEQUENCE)) return self::getCompact(substr($v, 1, -1), $this->type); |
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263
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$expected = [Y::JSON => json_decode($v, false, 512, JSON_PARTIAL_OUTPUT_ON_ERROR), |
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Y::QUOTED => substr($v, 1, -1), |
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Y::RAW => strval($v)]; |
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if (isset($expected[$this->type])) { |
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return $expected[$this->type]; |
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} |
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trigger_error("Error can not get PHP type for ".Y::getName($this->type), E_USER_WARNING); |
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return null; |
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} |
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/** |
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* Returns the correct PHP type according to the string value |
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* |
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* @param string $v a string value |
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* |
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* @return mixed The value with appropriate PHP type |
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*/ |
|
280
|
|
|
private static function getScalar(string $v) |
|
|
|
|
|
|
281
|
|
|
{ |
|
282
|
|
|
$types = ['yes' => true, |
|
283
|
|
|
'no' => false, |
|
284
|
|
|
'true' => true, |
|
285
|
|
|
'false' => false, |
|
286
|
|
|
'null' => null, |
|
287
|
|
|
'.inf' => INF, |
|
288
|
|
|
'-.inf' => -INF, |
|
289
|
|
|
'.nan' => NAN |
|
290
|
|
|
]; |
|
291
|
|
|
if (isset($types[strtolower($v)])) return $types[strtolower($v)]; |
|
292
|
|
|
if (R::isDate($v)) return date_create($v); |
|
293
|
|
|
if (R::isNumber($v)) return self::getNumber($v); |
|
294
|
|
|
return strval($v); |
|
295
|
|
|
} |
|
296
|
|
|
|
|
297
|
|
|
/** |
|
298
|
|
|
* Returns the correct PHP type according to the string value |
|
299
|
|
|
* |
|
300
|
|
|
* @param string $v a string value |
|
|
|
|
|
|
301
|
|
|
* |
|
302
|
|
|
* @return int|float The scalar value with appropriate PHP type |
|
|
|
|
|
|
303
|
|
|
*/ |
|
304
|
|
|
private static function getNumber(string $v) |
|
|
|
|
|
|
305
|
|
|
{ |
|
306
|
|
|
if (preg_match("/^(0o\d+)$/i", $v)) return intval(base_convert($v, 8, 10)); |
|
307
|
|
|
if (preg_match("/^(0x[\da-f]+)$/i", $v)) return intval(base_convert($v, 16, 10)); |
|
308
|
|
|
return is_bool(strpos($v, '.')) ? intval($v) : floatval($v); |
|
|
|
|
|
|
309
|
|
|
} |
|
310
|
|
|
|
|
311
|
|
|
private static function getCompact(string $mappingOrSeqString, int $type):object |
|
|
|
|
|
|
312
|
|
|
{ |
|
313
|
|
|
$out = new Compact(); |
|
314
|
|
|
if ($type === Y::COMPACT_SEQUENCE) { |
|
315
|
|
|
$f = function ($e) { return self::getScalar(trim($e));}; |
|
|
|
|
|
|
316
|
|
|
//TODO : that's not robust enough, improve it |
|
317
|
|
|
foreach (array_map($f, explode(",", $mappingOrSeqString)) as $key => $value) { |
|
318
|
|
|
$out[$key] = $value; |
|
319
|
|
|
} |
|
320
|
|
|
} |
|
321
|
|
|
if ($type === Y::COMPACT_MAPPING) { |
|
322
|
|
|
//TODO : that's not robust enough, improve it |
|
323
|
|
|
foreach (explode(',', $mappingOrSeqString) as $value) { |
|
324
|
|
|
list($keyName, $keyValue) = explode(':', $value); |
|
325
|
|
|
$out->{trim($keyName)} = self::getScalar(trim($keyValue)); |
|
326
|
|
|
} |
|
327
|
|
|
} |
|
328
|
|
|
return $out; |
|
329
|
|
|
} |
|
330
|
|
|
|
|
331
|
|
|
/** |
|
332
|
|
|
* PHP internal function for debugging purpose : simplify output provided by 'var_dump' |
|
333
|
|
|
* |
|
334
|
|
|
* @return array the Node properties and respective values displayed by 'var_dump' |
|
|
|
|
|
|
335
|
|
|
*/ |
|
336
|
|
|
public function __debugInfo():array |
|
337
|
|
|
{ |
|
338
|
|
|
return ['line' => $this->line, |
|
339
|
|
|
'indent'=> $this->indent, |
|
340
|
|
|
'type' => Y::getName($this->type).($this->identifier ? "($this->identifier)" : ''), |
|
341
|
|
|
'value' => $this->value]; |
|
342
|
|
|
} |
|
343
|
|
|
} |
|
344
|
|
|
|
dallgoot /
yaml
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