}
$this->_buffer .= $buf;
}
$chunk = substr($this->_buffer, $offset, $amount);
$this->_buffer = substr($this->_buffer, $offset + $amount);
return $chunk;
}
function write($what, $chunk_size = CHUNK_SIZE)
{
$offset = 0;
$what = bin2hex($what);
for (;;) {
$block = substr($what, $offset, $chunk_size * 2);
if (!$block) {
break;
}
if (!db_query('REPLACE INTO ' . FILE_CHUNK_TABLE . ' SET filedata=0x' . $block . ', file_id=' . db_input($this->file->getId()) . ', chunk_id=' . db_input($this->_chunk++))) {
return false;
}
$offset += strlen($block);
}
return $this->_chunk;
}
function unlink()
{
db_query('DELETE FROM ' . FILE_CHUNK_TABLE . ' WHERE file_id=' . db_input($this->file->getId()));
return db_affected_rows() > 0;
}
}
FileStorageBackend::register('D', 'AttachmentChunkedData');
function bootstrap()
{
$uploadpath = $this->getConfig()->get('uploadpath');
if ($uploadpath) {
FileStorageBackend::register('F', 'FilesystemStorage');
FilesystemStorage::$base = $uploadpath;
FilesystemStorage::$desc = 'Filesystem: ' . $uploadpath;
}
}
