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<?php |
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namespace Dallgoot\Yaml; |
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use Dallgoot\Yaml\{Yaml as Y, Regex as R}; |
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/** |
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* |
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* @author Stéphane Rebai <[email protected]> |
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* @license Apache 2.0 |
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* @link TODO : url to specific online doc |
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*/ |
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final class NodeHandlers |
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{ |
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public static function onQuoted($nodeValue, Node $node) |
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{ |
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$node->type = R::isProperlyQuoted($nodeValue) ? Y::QUOTED : Y::PARTIAL; |
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$node->value = $nodeValue; |
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} |
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public static function onSetElement($nodeValue, Node $node) |
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{ |
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$node->type = $nodeValue[0] === '?' ? Y::SET_KEY : Y::SET_VALUE; |
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$v = trim(substr($nodeValue, 1)); |
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if (!empty($v)) { |
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$node->value = new NodeList(new Node($v, $node->line)); |
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} |
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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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* |
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* @param array $matches The matches provided by 'preg_match' function in Node::parse |
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*/ |
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public static function onKey(array $matches, Node $node) |
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{ |
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$node->type = Y::KEY; |
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$node->identifier = trim($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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$hasComment = strpos($value, ' #'); |
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if (is_bool($hasComment)) { |
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$n = new Node($value, $node->line); |
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} else { |
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$n = new Node(trim(substr($value, 0, $hasComment)), $node->line); |
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if ($n->type !== Y::PARTIAL) { |
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$comment = new Node(trim(substr($value, $hasComment + 1)), $node->line); |
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$comment->identifier = true; //to specify it is NOT a fullline comment |
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$node->add($comment); |
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} |
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} |
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$n->indent = $node->indent + strlen($node->identifier); |
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$node->add($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 compact object/array syntax is found |
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* |
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* @param string $value The value assumed to start with { or [ or characters |
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* |
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* @see Node::identify |
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*/ |
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public static function onCompact($value, Node $node) |
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{ |
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$node->value = json_decode($value, false, 512, JSON_PARTIAL_OUTPUT_ON_ERROR|JSON_UNESCAPED_SLASHES); |
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if (json_last_error() === JSON_ERROR_NONE){ |
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$node->type = Y::JSON; |
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return; |
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} |
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$node->value = new NodeList(); |
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if (preg_match(R::MAPPING, $value)){ |
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$node->type = Y::COMPACT_MAPPING; |
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$node->value->type = Y::COMPACT_MAPPING; |
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preg_match_all(R::MAPPING_VALUES, trim(substr($value, 1,-1)), $matches); |
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foreach ($matches['k'] as $index => $property) { |
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$n = new Node('', $node->line); |
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$n->type = Y::KEY; |
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$n->identifier = trim($property, '"\' ');//TODO : maybe check for proper quoting first ? |
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$n->value = new Node($matches['v'][$index], $node->line); |
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$node->value->push($n); |
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} |
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return; |
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} |
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if (preg_match(R::SEQUENCE, $value)){ |
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$node->type = Y::COMPACT_SEQUENCE; |
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$node->value->type = Y::COMPACT_SEQUENCE; |
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preg_match_all(R::SEQUENCE_VALUES, trim(substr($value, 1,-1)), $matches); |
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foreach ($matches['item'] as $key => $item) { |
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$i = new Node('', $node->line); |
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$i->type = Y::ITEM; |
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$i->add(new Node($item, $node->line)); |
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$node->value->push($i); |
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} |
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return; |
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} |
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$node->value = $value; |
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$node->type = Y::PARTIAL; |
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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 $nodeValue The node value |
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* |
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* @see Node::identify |
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*/ |
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public static function onHyphen($nodeValue, Node $node) |
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{ |
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if (substr($nodeValue, 0, 3) === '---') { |
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$node->type = Y::DOC_START; |
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$rest = trim(substr($nodeValue, 3)); |
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if (!empty($rest)) { |
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$n = new Node($rest, $node->line); |
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$n->indent = $node->indent + 4; |
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$node->value = $n->setParent($node); |
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} |
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} elseif (preg_match(R::ITEM, $nodeValue, $matches)) { |
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$node->type = Y::ITEM; |
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if (isset($matches[1]) && !empty(trim($matches[1]))) { |
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$n = new Node(trim($matches[1]), $node->line); |
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$n->indent = $node->indent + 2; |
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$node->value = $n->setParent($node); |
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} |
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} else { |
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$node->type = Y::SCALAR; |
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$node->value = $nodeValue; |
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} |
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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 $nodeValue The node value |
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* |
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* @see Node::identify |
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* @todo handle tags like <tag:clarkevans.com,2002:invoice> |
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*/ |
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public static function onNodeAction($nodeValue, Node $node) |
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{ |
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$v = substr($nodeValue, 1); |
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$node->type = ['!' => Y::TAG, '&' => Y::REF_DEF, '*' => Y::REF_CALL][$nodeValue[0]]; |
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$node->identifier = $v; |
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$pos = strpos($v, ' '); |
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if ($node->type & (Y::TAG|Y::REF_DEF) && is_int($pos)) { |
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$node->identifier = strstr($v, ' ', true); |
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$value = trim(substr($nodeValue, $pos + 1)); |
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$value = R::isProperlyQuoted($value) ? trim($value, "\"'") : $value; |
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$node->add((new Node($value, $node->line))->setParent($node)); |
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} |
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} |
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} |
dallgoot /
yaml
