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<?php |
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namespace Dallgoot\Yaml; |
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use Dallgoot\Yaml\Dumper; |
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/** |
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* Convert PHP datatypes to a YAML string syntax |
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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 https://github.com/dallgoot/yaml |
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*/ |
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class DumperHandlers |
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{ |
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private $dumper; |
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public function __construct(Dumper $dumper) |
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{ |
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$this->dumper = $dumper; |
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} |
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public function dumpScalar($dataType):string |
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{ |
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if ($dataType === \INF) return '.inf'; |
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if ($dataType === -\INF) return '-.inf'; |
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$precision = "%.".$this->dumper->floatPrecision."F"; |
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switch (gettype($dataType)) { |
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case 'boolean': return $dataType ? 'true' : 'false'; |
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case 'float': //fall through |
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case 'double': return is_nan((double) $dataType) ? '.nan' : sprintf($precision, $dataType); |
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} |
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return $this->dumpString($dataType); |
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} |
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public function dumpCompound($compound, int $indent):string |
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{ |
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if ($this->dumper->_compactMode) { |
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return $this->dumpCompact($compound, $indent); |
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} else { |
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if (is_array($compound)) { |
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$iterator = new \ArrayIterator($compound); |
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$keyMask = '-'; |
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$refKeys = range(0, count($compound) - 1); |
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if (array_keys($compound) !== $refKeys) { |
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$keyMask = '%s:'; |
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} |
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return $this->dumper->iteratorToString($iterator, $keyMask, "\n", $indent); |
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} elseif (is_object($compound) && !is_callable($compound)) { |
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return $this->dumpObject($compound, $indent); |
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} |
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} |
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throw new \Exception("Dumping Callable|Resource is not currently supported", 1); |
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} |
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private function dumpObject(object $object, int $indent):string |
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{ |
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if ($object instanceof YamlObject) { |
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return $this->dumper->dumpYamlObject($object); |
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} elseif ($object instanceof Compact) { |
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return $this->dumpCompact($object, $indent); |
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} elseif ($object instanceof Tagged) { |
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return $this->dumpTagged($object, $indent); |
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} elseif ($object instanceof \DateTime) { |
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return $object->format($this->dumper::DATE_FORMAT); |
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} elseif (is_iterable($object)) { |
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$iterator = $object; |
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} else { |
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$iterator = new \ArrayIterator(get_object_vars($object)); |
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} |
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return $this->dumper->iteratorToString($iterator, '%s:', "\n", $indent); |
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} |
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/** |
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* Dumps a Compact|mixed (representing an array or object) as the single-line format representation. |
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* All values inside are assumed single-line as well. |
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* Note: can NOT use JSON_encode because of possible reference calls or definitions as : '&abc 123', '*fre' |
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* which would be quoted by json_encode |
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* |
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* @param mixed $subject The subject |
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* @param integer $indent The indent |
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* |
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* @return string the string representation (JSON like) of the value |
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*/ |
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public function dumpCompact($subject, int $indent):string |
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{ |
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$structureFormat = '{%s}'; |
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$keyMask = "%s: "; |
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if (!is_array($subject) && !($subject instanceof \ArrayIterator)) { |
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$source = get_object_vars($subject); |
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} else { |
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$max = count($subject); |
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$objectAsArray = is_array($subject) ? $subject : $subject->getArrayCopy(); |
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$source = $objectAsArray; |
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if (array_keys($objectAsArray) === range(0, $max - 1)) { |
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$structureFormat = '[%s]'; |
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$keyMask = ''; |
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} |
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} |
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$previousCompactMode = $this->dumper->_compactMode; |
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$this->dumper->_compactMode = true; |
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$result = $this->dumper->iteratorToString(new \ArrayIterator($source), $keyMask, ', ', $indent); |
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$this->dumper->_compactMode = $previousCompactMode; |
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return sprintf($structureFormat, $result); |
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} |
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/** |
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* Dumps a string. Protects it if needed |
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* |
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* @param string $str The string |
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* |
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* @return string ( description_of_the_return_value ) |
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* @todo implements checking and protection function |
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*/ |
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public function dumpString(string $str):string |
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{ |
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//those characters must be escaped : - : ? { } [ ] # , & * ! > | ' " % |
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// The “@” (#x40, at) and “`” (#x60, grave accent) are reserved for future use. |
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// 5.4. Line Break Characters |
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// Example 5.13. Escaped Characters |
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$str = json_encode(ltrim($str)); |
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return strspn(substr($str,1,-1), "-:?{}[]#,&*!>|'\"%") > 0 ? $str : trim($str, '"'); |
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} |
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public function dumpTagged(Tagged $obj, int $indent):string |
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{ |
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$separator = ' '; |
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$valueIndent = 0; |
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if (!is_scalar($obj->value) && !$this->dumper->_compactMode) { |
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$separator = "\n"; |
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$valueIndent = $indent + $this->dumper::INDENT; |
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} |
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return $obj->tagName.$separator.$this->dumper->dump($obj->value, $valueIndent); |
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} |
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} |
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dallgoot /
yaml
