SHOW:
|
|
- or go back to the newest paste.
| 1 | <?php | |
| 2 | - | abstract class Fw_Recursive_Array_Helper {
|
| 2 | + | final class Fw_Recursive_Array_Helper {
|
| 3 | const ESCAPE = '\\'; | |
| 4 | const SEPARATOR = '.'; | |
| 5 | ||
| 6 | /** | |
| 7 | * @param mixed $array | |
| 8 | * @param string $path | |
| 9 | * @param mixed $default | |
| 10 | * @throws InvalidArgumentException | |
| 11 | * @return mixed | |
| 12 | */ | |
| 13 | static public function get($array, $path, $default = null) {
| |
| 14 | if (!assert_string($path)) {
| |
| 15 | throw new InvalidArgumentException('Path must be a string');
| |
| 16 | } | |
| 17 | ||
| 18 | $parts = self::separate($path); | |
| 19 | $value = $array; | |
| 20 | ||
| 21 | if (!self::has($array, $path)) {
| |
| 22 | return $default; | |
| 23 | } | |
| 24 | ||
| 25 | while (count($parts)) {
| |
| 26 | $part = array_shift($parts); | |
| 27 | ||
| 28 | if (array_key_exists($part, $value)) {
| |
| 29 | $value = $value[$part]; | |
| 30 | } | |
| 31 | } | |
| 32 | ||
| 33 | return $value; | |
| 34 | } | |
| 35 | ||
| 36 | /** | |
| 37 | * Determines if $path exists in $array | |
| 38 | * | |
| 39 | * @param mixed $array | |
| 40 | * @param string $path | |
| 41 | * @return unknown | |
| 42 | */ | |
| 43 | static public function has($array, $path) {
| |
| 44 | if (!assert_string($path)) {
| |
| 45 | return false; | |
| 46 | } | |
| 47 | ||
| 48 | $parts = explode(self::SEPARATOR, $path); | |
| 49 | ||
| 50 | while (count($parts)) {
| |
| 51 | $part = array_shift($parts); | |
| 52 | ||
| 53 | if (self::isAcceptedArrayType($array) && array_key_exists($part, $array)) {
| |
| 54 | $array = $array[$part]; | |
| 55 | } else {
| |
| 56 | return false; | |
| 57 | } | |
| 58 | } | |
| 59 | ||
| 60 | return true; | |
| 61 | } | |
| 62 | ||
| 63 | /** | |
| 64 | * Sets $value in $array where $path is the recursive Path inside $array | |
| 65 | * | |
| 66 | * @param mixed $array | |
| 67 | * @param string $path | |
| 68 | * @param mixed $value | |
| 69 | * @throws InvalidArgumentException | |
| 70 | * @return array | |
| 71 | */ | |
| 72 | static public function set(&$array, $path, $value) {
| |
| 73 | if (!assert_string($path)) {
| |
| 74 | throw new InvalidArgumentException('Path must be a string');
| |
| 75 | } | |
| 76 | ||
| 77 | if (!self::isAcceptedArrayType($array)) {
| |
| 78 | $array = array(); | |
| 79 | } | |
| 80 | ||
| 81 | $parts = self::separate($path); | |
| 82 | ||
| 83 | if (count($parts) > 1) {
| |
| 84 | $part = array_shift($parts); | |
| 85 | ||
| 86 | if (!self::isAcceptedArrayType($array)) {
| |
| 87 | $array = array(); | |
| 88 | } | |
| 89 | ||
| 90 | if (!array_key_exists($part, $array)) {
| |
| 91 | $array[$part] = null; | |
| 92 | } | |
| 93 | ||
| 94 | $array[$part] = self::set($array[$part], join(self::SEPARATOR, $parts), $value); | |
| 95 | } else {
| |
| 96 | $array[$path] = $value; | |
| 97 | } | |
| 98 | ||
| 99 | return $array; | |
| 100 | } | |
| 101 | ||
| 102 | /** | |
| 103 | * @param string $array | |
| 104 | * @param string $path | |
| 105 | * @return array | |
| 106 | */ | |
| 107 | static public function clear(array &$array, $path) {
| |
| 108 | $path = self::separate($path); | |
| 109 | self::clearKey($array, $path); | |
| 110 | return $array; | |
| 111 | } | |
| 112 | ||
| 113 | /** | |
| 114 | * @param array $array | |
| 115 | * @param array $path | |
| 116 | * @return array | |
| 117 | */ | |
| 118 | static private function clearKey(array &$array, array $path) {
| |
| 119 | if (count($path)) {
| |
| 120 | $key = array_shift($path); | |
| 121 | if (array_key_exists($key, $array)) {
| |
| 122 | if (count($path)) {
| |
| 123 | return self::clearKey($array[$key], $path); | |
| 124 | } | |
| 125 | unset($array[$key]); | |
| 126 | } | |
| 127 | } | |
| 128 | return $array; | |
| 129 | } | |
| 130 | ||
| 131 | /** | |
| 132 | * Returns parts of $path that are separated by an escape-char | |
| 133 | * Example: | |
| 134 | * escape = \ | |
| 135 | * separator = . | |
| 136 | * $path = 'a.bb.ccc.bb...a\.\.' | |
| 137 | * result = array('a', 'bb', 'ccc', 'bb', '', '', 'a..')
| |
| 138 | * | |
| 139 | * @param string $path | |
| 140 | * @return array | |
| 141 | */ | |
| 142 | static private function separate($path) {
| |
| 143 | $res = array(); | |
| 144 | $idx = 0; | |
| 145 | ||
| 146 | for ($i = 0; $i < strlen($path); $i++) {
| |
| 147 | $char = $path[$i]; | |
| 148 | ||
| 149 | if ($char == self::ESCAPE) {
| |
| 150 | $i++; | |
| 151 | } elseif ($char == self::SEPARATOR) {
| |
| 152 | $idx++; | |
| 153 | ||
| 154 | if (!array_key_exists($idx, $res)) {
| |
| 155 | $res[$idx] = ''; | |
| 156 | } | |
| 157 | } else {
| |
| 158 | if (!array_key_exists($idx, $res)) {
| |
| 159 | $res[$idx] = ''; | |
| 160 | } | |
| 161 | ||
| 162 | $res[$idx] .= $char; | |
| 163 | } | |
| 164 | } | |
| 165 | ||
| 166 | return $res; | |
| 167 | } | |
| 168 | ||
| 169 | /** | |
| 170 | * Returns true when $array is an array or an ArrayObject | |
| 171 | * | |
| 172 | * @param mixed $array | |
| 173 | * @return bool | |
| 174 | */ | |
| 175 | static private function isAcceptedArrayType($array) {
| |
| 176 | return is_array($array) || $array instanceof ArrayObject; | |
| 177 | } | |
| 178 | } |
