64 lines
1.6 KiB
PHP
64 lines
1.6 KiB
PHP
<?php
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final class Freezer
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{
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protected $key_delimeter = '%%%';
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private $length = 99999;
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private $nodes_location = '';
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private $nodes = array();
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public static function clean($directory, $suffix) {
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$loc = $directory . '/' . $suffix;
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file_exists($loc) && unlink($loc);
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}
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public function __construct($directory, $suffix) {
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$this->nodes_location = $directory . '/' . $suffix;
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touch($this->nodes_location);
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$nodes_file = fopen($this->nodes_location, 'r');
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$this->_readFromFile($nodes_file);
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fclose($nodes_file);
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}
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public function __destruct() {
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$this->flush();
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}
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private function _readFromFile($nodes_file) {
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while (!feof($nodes_file)) {
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$line = stream_get_line($nodes_file, $this->length, "\n");
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list($key, $value) = explode($this->key_delimeter, $line);
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if (trim($key)) {
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$this->nodes[$key] = $value;
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}
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}
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}
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public function ids($flush = TRUE) {
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return array_keys($this->nodes);
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}
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public function open($key, $default) {
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if(array_key_exists($key, $this->nodes)){
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return unserialize(str_replace("\\n", "\n", $this->nodes[$key]));
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}
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return $default;
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}
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public function save($key, $content) {
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$this->nodes[$key] = str_replace("\n", "\\n", serialize($content));
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}
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private function flush() {
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$tmp = fopen($this->nodes_location . '_tmp', 'w');
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foreach ($this->nodes as $key => $value) {
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fwrite($tmp, $key . $this->key_delimeter . $value . "\n");
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}
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fclose($tmp);
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unlink($this->nodes_location);
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rename($this->nodes_location . '_tmp', $this->nodes_location);
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}
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}
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