/**
* Replace GDocs with .url files
*/
private void PlaceUrlFiles(Metadata metadata)
{
if (metadata.gdocs_link != null && !metadata.is_dir)
{
metadata.path = metadata.path + ".url";
metadata.bytes = 24 + (ulong)metadata.gdocs_link.Length;
metadataCache[stripLeadingSlash(metadata.path)] = metadata;
}
if (metadata.content != null)
{
foreach (var item in metadata.content)
{
PlaceUrlFiles(item);
}
}
}
private bool ReadFromCache(String filename, Byte[] buffer, ref int readBytes,
long offset, int offset_buf, Metadata meta)
{
// get block number
int block = (int)(offset / precache_bytes);
// get cache buffer
byte[] cbuf = fileCaches[meta.path][block.ToString()];
if (cbuf != null)
{
// block is cached, no need to make expensive network calls
Debug.WriteLine("CacheHit! ReadFile {0} {1}", filename, offset);
// calculate how many bytes can be read from cache
int toCopy = cbuf.Length - (int)(offset % precache_bytes);
if ((buffer.Length-offset_buf) < toCopy)
{
toCopy = (buffer.Length - offset_buf);
}
// read bytes from cache
Buffer.BlockCopy(cbuf, (int)(offset % precache_bytes), buffer, offset_buf, toCopy);
readBytes = toCopy;
if (offset_buf + toCopy < buffer.Length && cbuf.Length == precache_bytes)
{
// still have data to read
return false;
}
else
{
// done!
return true;
}
}
readBytes = 0;
return false;
}
