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<?php |
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namespace Sausin\XmlConstruct; |
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use XMLWriter; |
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use JsonSerializable; |
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use BadFunctionCallException; |
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/** |
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* Credit goes to the commenters on php.net for the basic structure of this. |
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* @see http://php.net/manual/en/ref.xmlwriter.php |
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*/ |
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class XmlConstruct extends XMLWriter |
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{ |
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protected $separator; |
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/** |
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* Constructor. |
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* |
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* @param string $rootElementName |
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* @param string $separator |
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*/ |
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public function __construct(string $rootElementName, string $separator = '|') |
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{ |
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$this->openMemory(); |
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$this->setIndent(true); |
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$this->setIndentString(' '); |
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$this->startDocument('1.0', 'UTF-8'); |
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$this->startElement($rootElementName); |
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$this->separator = $separator; |
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} |
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/** |
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* Construct elements and texts from an array. The array should contain an |
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* attribute's name in index part and a attribute's text in value part. |
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* |
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* @param array $prmArray Contains values |
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* @return XmlConstruct |
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*/ |
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public function fromArray(array $prmArray): XmlConstruct |
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{ |
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foreach ($prmArray as $key => $val) { |
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if (is_array($val)) { |
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if (is_numeric($key)) { |
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// numeric keys aren't allowed so we'll skip the key |
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$this->fromArray($val); |
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} else { |
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$this->writeKey($key); |
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$this->fromArray($val); |
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$this->endElement(); |
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} |
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} else { |
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$this->setElement($key, $val); |
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} |
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} |
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return $this; |
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} |
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/** |
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* Construct elements and texts from a json string. |
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* |
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* @param string $jsonString |
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* @return XmlConstruct |
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*/ |
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public function fromJson(string $jsonString): XmlConstruct |
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{ |
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if (! $this->isJson($jsonString)) { |
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throw new UnexpectedValueException('Invalid string provided'); |
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} |
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return $this->fromArray(json_decode($jsonString, true)); |
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} |
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/** |
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* Construct elements and texts from a json string. |
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* |
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* @param JsonSerializable $jsonObject |
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* @return XmlConstruct |
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*/ |
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public function fromJsonSerializable(JsonSerializable $jsonObject): XmlConstruct |
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{ |
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return $this->fromArray(json_decode(json_encode($jsonObject), true)); |
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} |
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/** |
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* Return the content of a current xml document. |
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* |
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* @return string XML document |
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*/ |
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public function getDocument(): string |
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{ |
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$this->endElement(); |
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$this->endDocument(); |
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return $this->outputMemory(); |
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} |
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/** |
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* Write a key. |
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* |
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* @param string $key |
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* @return void|BadFunctionCallException |
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*/ |
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protected function writeKey(string $key) |
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{ |
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if (mb_strpos($key, $this->separator)) { |
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$pieces = explode($this->separator, $key); |
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// begin the element |
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$this->startElement(array_shift($pieces)); |
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if (count($pieces) % 2 === 1) { |
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throw new BadFunctionCallException('Invalid attribute pair at '.end($pieces)); |
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} |
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// write the attributes |
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foreach (array_chunk($pieces, 2) as list($attr, $val)) { |
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$this->writeAttribute($attr, $val); |
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} |
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} else { |
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// info($key); |
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$this->startElement($key); |
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} |
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} |
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/** |
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* Set an element with a text to a current xml document. |
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* |
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* @param string $name An element's name |
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* @param string $text An element's text |
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* @return void|BadFunctionCallException |
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*/ |
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protected function setElement(string $name, string $text) |
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{ |
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$this->writeKey($name); |
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$this->text($text); |
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$this->endElement(); |
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} |
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/** |
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* Check if provided string is Json string. |
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* |
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* @param string $string |
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* @return boolean |
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*/ |
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protected function isJson(string $string): bool |
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{ |
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json_decode($string); |
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return (json_last_error() == JSON_ERROR_NONE); |
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} |
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} |
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sausin /
xml-construct
