95 lines
1.9 KiB
PHP
Executable File
95 lines
1.9 KiB
PHP
Executable File
<?php
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namespace BenBot;
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final class PersistentArray implements \ArrayAccess, \Iterator
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{
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protected $data;
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protected $filepath;
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public function __construct($filepath)
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{
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$this->filepath = $filepath;
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if (!is_file($this->filepath)) {
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throw new Exception('Invalid filepath');
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}
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$rawfiledata = file_get_contents($this->filepath);
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if (strlen($rawfiledata) > 3) {
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$this->data = msgpack_unpack($rawfiledata);
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}
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}
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public function __debugInfo()
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{
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return print_r($this->data, true);
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}
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public function __call($func, $argv)
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{
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if (!is_callable($func) || substr($func, 0, 6) !== 'array_') {
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throw new \BadMethodCallException(__CLASS__."->$func");
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}
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$copy = $this->data;
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return call_user_func_array($func, array_merge([$copy], $argv));
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}
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// array access methods
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public function offsetGet($offset)
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{
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return $this->data[$offset] ?? null;
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}
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public function offsetSet($offset, $value)
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{
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if (is_null($offset)) {
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$this->data[] = $value;
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} else {
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$this->data[$offset] = $value;
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}
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$this->save();
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}
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public function offsetExists($offset)
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{
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return isset($this->data[$offset]);
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}
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public function offsetUnset($offset)
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{
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unset($this->data[$offset]);
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$this->save();
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}
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// iterator methods
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public function rewind()
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{
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return reset($this->data);
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}
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public function current()
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{
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return current($this->data);
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}
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public function key()
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{
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return key($this->data);
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}
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public function next()
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{
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return next($this->data);
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}
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public function valid()
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{
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return key($this->data) !== null;
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}
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private function save()
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{
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file_put_contents($this->filepath, msgpack_pack($this->data));
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}
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}
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