/// <summary>
/// Read all the packs and indexes from the source stream and return a <see cref="PackAndIndex"/> for each pack
/// and index. Caller must consume pack stream fully before the index stream.
/// </summary>
public IEnumerable <PackAndIndex> EnumeratePacks()
{
this.ValidateHeader();
// Start reading objects
byte[] buffer = new byte[NumPackHeaderBytes];
int packCount = this.ReadPackCount(buffer);
for (int i = 0; i < packCount; i++)
{
long timestamp;
long packLength;
long indexLength;
this.ReadPackHeader(buffer, out timestamp, out packLength, out indexLength);
using (Stream packData = new RestrictedStream(this.source, 0, packLength, leaveOpen: true))
using (Stream indexData = indexLength > 0 ? new RestrictedStream(this.source, 0, indexLength, leaveOpen: true) : null)
{
yield return(new PackAndIndex(packData, indexData, timestamp));
}
}
}
/// <summary>
/// Read all the objects from the source stream and call <see cref="OnLooseObject"/> for each.
/// </summary>
/// <returns>The total number of objects read</returns>
public int ProcessObjects()
{
this.ValidateHeader();
// Start reading objects
int numObjectsRead = 0;
byte[] curObjectHeader = new byte[NumObjectHeaderBytes];
while (true)
{
bool keepReading = this.ShouldContinueReading(curObjectHeader);
if (!keepReading)
{
break;
}
// Get the length
long curLength = BitConverter.ToInt64(curObjectHeader, NumObjectIdBytes);
// Handle the loose object
using (Stream rawObjectData = new RestrictedStream(this.source, 0, curLength, leaveOpen: true))
{
string objectId = SHA1Util.HexStringFromBytes(curObjectHeader, NumObjectIdBytes);
if (objectId.Equals(GVFSConstants.AllZeroSha))
{
throw new RetryableException("Received all-zero SHA before end of stream");
}
this.onLooseObject(rawObjectData, objectId);
numObjectsRead++;
}
}
return(numObjectsRead);
}