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<?php
/**
* Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
class OC_FileChunking {
protected $info;
protected $cache;
static public function decodeName($name) {
preg_match('/(?P<name>.*)-chunking-(?P<transferid>\d+)-(?P<chunkcount>\d+)-(?P<index>\d+)/', $name, $matches);
return $matches;
}
public function __construct($info) {
$this->info = $info;
}
public function getPrefix() {
$name = $this->info['name'];
$transferid = $this->info['transferid'];
$chunkcount = $this->info['chunkcount'];
return $name.'-chunking-'.$transferid.'-'.$chunkcount.'-';
}
protected function getCache() {
if (!isset($this->cache)) {
$this->cache = new OC_Cache_File();
}
return $this->cache;
}
public function store($index, $data) {
$cache = $this->getCache();
$name = $this->getPrefix().$index;
$cache->set($name, $data);
}
public function isComplete() {
$prefix = $this->getPrefix();
$parts = 0;
$cache = $this->getCache();
for($i=0; $i < $this->info['chunkcount']; $i++) {
if ($cache->hasKey($prefix.$i)) {
$parts ++;
}
}
return $parts == $this->info['chunkcount'];
}
public function assemble($f) {
$cache = $this->getCache();
$prefix = $this->getPrefix();
for($i=0; $i < $this->info['chunkcount']; $i++) {
$chunk = $cache->get($prefix.$i);
$cache->remove($prefix.$i);
fwrite($f,$chunk);
}
fclose($f);
}
}
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