/// <summary>Detect index changes.</summary>
/// <remarks>Detect index changes.</remarks>
private void DetectIndexChanges()
{
if (IsBare)
{
return;
}
FilePath indexFile = GetIndexFile();
if (snapshot == null)
{
snapshot = FileSnapshot.Save(indexFile);
}
else
{
if (snapshot.IsModified(indexFile))
{
NotifyIndexChanged();
}
}
}
/// <returns>
/// returns true if the currently loaded configuration file is older
/// than the file on disk
/// </returns>
public virtual bool IsOutdated()
{
return(snapshot.IsModified(GetFile()));
}
/// <exception cref="System.IO.IOException"></exception>
private RefDirectory.LooseRef ScanRef(RefDirectory.LooseRef @ref, string name)
{
FilePath path = FileFor(name);
FileSnapshot currentSnapshot = null;
if (@ref != null)
{
currentSnapshot = @ref.GetSnapShot();
if (!currentSnapshot.IsModified(path))
{
return(@ref);
}
name = @ref.GetName();
}
int limit = 4096;
byte[] buf;
FileSnapshot otherSnapshot = FileSnapshot.Save(path);
try
{
buf = IOUtil.ReadSome(path, limit);
}
catch (FileNotFoundException)
{
return(null);
}
// doesn't exist; not a reference.
int n = buf.Length;
if (n == 0)
{
return(null);
}
// empty file; not a reference.
if (IsSymRef(buf, n))
{
if (n == limit)
{
return(null);
}
// possibly truncated ref
// trim trailing whitespace
while (0 < n && char.IsWhiteSpace((char)buf[n - 1]))
{
n--;
}
if (n < 6)
{
string content = RawParseUtils.Decode(buf, 0, n);
throw new IOException(MessageFormat.Format(JGitText.Get().notARef, name, content)
);
}
string target = RawParseUtils.Decode(buf, 5, n);
if (@ref != null && @ref.IsSymbolic() && @ref.GetTarget().GetName().Equals(target
))
{
currentSnapshot.SetClean(otherSnapshot);
return(@ref);
}
return(NewSymbolicRef(otherSnapshot, name, target));
}
if (n < Constants.OBJECT_ID_STRING_LENGTH)
{
return(null);
}
// impossibly short object identifier; not a reference.
ObjectId id;
try
{
id = ObjectId.FromString(buf, 0);
if (@ref != null && [email protected]() && @ref.GetTarget().GetObjectId().Equals(id
))
{
currentSnapshot.SetClean(otherSnapshot);
return(@ref);
}
}
catch (ArgumentException)
{
while (0 < n && char.IsWhiteSpace((char)buf[n - 1]))
{
n--;
}
string content = RawParseUtils.Decode(buf, 0, n);
throw new IOException(MessageFormat.Format(JGitText.Get().notARef, name, content)
);
}
return(new RefDirectory.LooseUnpeeled(otherSnapshot, name, id));
}
