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| 1 | <?php |
| 2 | namespace XMLParser; |
| 3 | use Exception; |
| 4 | use InvalidArgumentException; |
| 5 | use SimpleXMLElement; |
| 6 | class XMLParser { |
| 7 | private static $_defaultRootNode = 'root'; |
| 8 | private static $_defaultListNode = 'list'; |
| 9 | private static $_defaultItemNode = 'item'; |
| 10 | private static $_defaultEncoding = 'UTF-8'; |
| 11 | private static $_defaultVersion = '1.0'; |
| 12 | private static $_defaultAttrTag = 'attr:'; |
| 13 | public static function encode ($data, $root = null) |
| 14 | { |
| 15 | if ($data instanceof SimpleXMLElement) { |
| 16 | return $data; |
| 17 | } |
| 18 | try { |
| 19 | $data = self::_validateEncodeData($data); |
| 20 | $version = self::$_defaultVersion; |
| 21 | $encoding = self::$_defaultEncoding; |
| 22 | $xml_string = "<?xml version=\"{$version}\" encoding=\"{$encoding}\" ?>"; |
| 23 | $node = self::_formatName( is_null($root) ? |
| 24 | self::$_defaultRootNode : |
| 25 | $root); |
| 26 | $value = ($is_array = is_array($data)) ? NULL : self::_formatValue($data); |
| 27 | $xml_string .= "<$node>$value</$node>"; |
| 28 | $xml = new SimpleXMLElement($xml_string); |
| 29 | if ($is_array) { |
| 30 | $xml = self::_addChildren($xml,$data); |
| 31 | } |
| 32 | } |
| 33 | catch (Exception $e) { |
| 34 | trigger_error($e->getMessage(), E_USER_ERROR); |
| 35 | } |
| 36 | return isset($xml) ? $xml : null; // isset() essentially to make editor happy. |
| 37 | } |
| 38 | public static function objectToArray($std) { |
| 39 | if (is_object($std)) { |
| 40 | $std = get_object_vars($std); |
| 41 | } |
| 42 | if (is_array($std)) { |
| 43 | return array_map(['self','objectToArray'], $std); |
| 44 | } |
| 45 | else { |
| 46 | return $std; |
| 47 | } |
| 48 | } |
| 49 | private static function _validateEncodeData ($data) |
| 50 | { |
| 51 | if(is_object($data)){ // Try conversion |
| 52 | $data = self::objectToArray($data); |
| 53 | } |
| 54 | if (is_object($data)) { // If it's still an object throw exception |
| 55 | throw new InvalidArgumentException( |
| 56 | "Invalid data type supplied for XMLParser::encode" |
| 57 | ); |
| 58 | } |
| 59 | return $data; |
| 60 | } |
| 61 | private static function _addChildren (SimpleXMLElement $element, $data) |
| 62 | { |
| 63 | foreach ($data as $key => $value) { |
| 64 | $regex = '/^'.self::$_defaultAttrTag.'([a-z0-9\._-]*)/'; |
| 65 | $is_attr = preg_match($regex, $key, $attr); |
| 66 | if ($is_attr) { |
| 67 | if (is_array($value)) { |
| 68 | foreach( $value as $k=>$v ) { |
| 69 | $element->addAttribute( |
| 70 | self::_formatName($k), |
| 71 | self::_formatValue($v)); |
| 72 | } |
| 73 | } else { |
| 74 | $element->addAttribute( |
| 75 | self::_formatName($attr[1]), |
| 76 | self::_formatValue($value) |
| 77 | ); |
| 78 | } |
| 79 | continue; |
| 80 | } |
| 81 | $node = self::_formatName( |
| 82 | is_numeric($key) ? |
| 83 | (is_array($value) ? |
| 84 | self::$_defaultListNode : |
| 85 | self::$_defaultItemNode) : $key |
| 86 | ); |
| 87 | if (is_array($value)) { |
| 88 | $child = $element->addChild($node); |
| 89 | self::_addChildren($child,$value); |
| 90 | continue; |
| 91 | } |
| 92 | $element->addChild($node, $value); |
| 93 | } |
| 94 | return $element; |
| 95 | } |
| 96 | private static function _formatName ($string) |
| 97 | { |
| 98 | $p = [ |
| 99 | '/[^a-z0-9\._ -]/i' => '', |
| 100 | '/(?=^[[0-9]\.\-\:^xml])/i' => self::$_defaultItemNode.'_', |
| 101 | '/ /' => '_' |
| 102 | ]; |
| 103 | $string = preg_replace(array_keys($p), array_values($p), $string); |
| 104 | return strtolower($string); |
| 105 | } |
| 106 | private static function _formatValue ($string) |
| 107 | { |
| 108 | $string = is_null($string) ? 'NULL' : $string; |
| 109 | return is_bool($string) ? self::_bool($string) : $string; |
| 110 | } |
| 111 | private static function _bool ($bool) |
| 112 | { |
| 113 | return $bool ? 'TRUE' : 'FALSE'; |
| 114 | } |
| 115 | public static function decode ($xml) |
| 116 | { |
| 117 | if (!$xml instanceof SimpleXMLElement) |
| 118 | { |
| 119 | $xml = new SimpleXMLElement($xml); |
| 120 | } |
| 121 | return json_decode(json_encode($xml),false); |
| 122 | } |
| 123 | } |