private static void ReadTree(Stream s, GitObject go, ObjectHeader header)
{
var sb = new StringBuilder();
// The counter is increased inside the loop
// with every read operation.
for (int i = 0; i < header.Size;)
{
var leading = ReadLeadingBytes(s);
sb.Append(leading);
sb.Append(' ');
i += 7;
var filename = ReadFileName(s);
sb.Append(filename);
sb.Append(' ');
i += filename.Length + 1;
var hash = ReadHash(s);
sb.AppendLine(hash);
i += 20;
go.AddReference(hash, filename);
}
go.Body = sb.ToString();
}
private static void ReadPackInfo(Stream s, GitObject go)
{
using (var sr = new StreamReader(s))
{
go.Body = sr.ReadToEnd();
}
var packs = new Regex(@"P (?<id>.*)");
foreach (Match pack in packs.Matches(go.Body))
{
go.AddReference(pack.Groups["id"].Value);
}
}
private static GitObject ReadObject(FileInfo fi, ref Stream s)
{
s = new Ionic.Zlib.ZlibStream(s, Ionic.Zlib.CompressionMode.Decompress);
var go = new GitObject();
var header = ReadHeader(s);
go.ObjectType = header.Type;
ReadBody(s, go, header);
go.Id = fi.Directory.Name + fi.Name;
return(go);
}
private static GitObject ReadRef(FileInfo fi, Stream s)
{
using (var sr = new StreamReader(s))
{
var go = new GitObject
{
Id = fi.Name,
ObjectType = ObjectType.Branch,
Body = sr.ReadToEnd().Trim()
};
go.AddReference(go.Body);
return(go);
}
}
private static GitObject ReadInfo(FileInfo fi, Stream s)
{
GitObject result = new GitObject
{
Id = fi.Name,
ObjectType = ObjectType.Info
};
if (fi.Name == "packs")
{
ReadPackInfo(s, result);
}
return(result);
}
private static GitObject ReadPack(FileInfo fi)
{
var go = new GitObject
{
Id = fi.Name,
ObjectType = ObjectType.Pack
};
if (fi.Extension == ".idx")
{
go.AddReference(Path.ChangeExtension(fi.Name, ".pack"));
}
return(go);
}
private static void ReadBody(Stream s, GitObject go, ObjectHeader header)
{
switch (header.Type)
{
case ObjectType.Tree:
ReadTree(s, go, header);
break;
case ObjectType.Commit:
ReadCommit(s, go);
break;
default:
go.Body = ReadFile(s);
break;
}
}
private static void ReadCommit(Stream s, GitObject go)
{
go.Body = ReadFile(s);
Regex parents = new Regex(@"parent (?<id>\w*)");
foreach (Match match in parents.Matches(go.Body))
{
go.AddReference(match.Groups["id"].Value);
}
var tree = Regex.Match(go.Body, @"tree (?<id>\w*)");
if (tree.Success)
{
go.AddReference(tree.Groups["id"].Value);
}
}
private static void ReadTree(Stream s, GitObject go, ObjectHeader header)
{
var sb = new StringBuilder();
// The counter is increased inside the loop
// with every read operation.
for (int i = 0; i < header.Size; )
{
var leading = ReadLeadingBytes(s);
sb.Append(leading);
sb.Append(' ');
i += 7;
var filename = ReadFileName(s);
sb.Append(filename);
sb.Append(' ');
i += filename.Length + 1;
var hash = ReadHash(s);
sb.AppendLine(hash);
i += 20;
go.AddReference(hash, filename);
}
go.Body = sb.ToString();
}
private static void ReadPackInfo(Stream s, GitObject go)
{
using (var sr = new StreamReader(s))
{
go.Body = sr.ReadToEnd();
}
var packs = new Regex(@"P (?<id>.*)");
foreach (Match pack in packs.Matches(go.Body))
{
go.AddReference(pack.Groups["id"].Value);
}
}
private static GitObject ReadRef(FileInfo fi, Stream s)
{
using (var sr = new StreamReader(s))
{
var go = new GitObject
{
Id = fi.Name,
ObjectType = ObjectType.Branch,
Body = sr.ReadToEnd().Trim()
};
go.AddReference(go.Body);
return go;
}
}
private static GitObject ReadPack(FileInfo fi)
{
var go = new GitObject
{
Id = fi.Name,
ObjectType = ObjectType.Pack
};
if (fi.Extension == ".idx")
{
go.AddReference(Path.ChangeExtension(fi.Name, ".pack"));
}
return go;
}
private static GitObject ReadObject(FileInfo fi, ref Stream s)
{
s = new Ionic.Zlib.ZlibStream(s, Ionic.Zlib.CompressionMode.Decompress);
var go = new GitObject();
var header = ReadHeader(s);
go.ObjectType = header.Type;
ReadBody(s, go, header);
go.Id = fi.Directory.Name + fi.Name;
return go;
}
private static GitObject ReadInfo(FileInfo fi, Stream s)
{
GitObject result = new GitObject
{
Id = fi.Name,
ObjectType = ObjectType.Info
};
if (fi.Name == "packs")
{
ReadPackInfo(s, result);
}
return result;
}
private static void ReadCommit(Stream s, GitObject go)
{
go.Body = ReadFile(s);
Regex parents = new Regex(@"parent (?<id>\w*)");
foreach (Match match in parents.Matches(go.Body))
{
go.AddReference(match.Groups["id"].Value);
}
var tree = Regex.Match(go.Body, @"tree (?<id>\w*)");
if (tree.Success)
{
go.AddReference(tree.Groups["id"].Value);
}
}
private static void ReadBody(Stream s, GitObject go, ObjectHeader header)
{
switch (header.Type)
{
case ObjectType.Tree:
ReadTree(s, go, header);
break;
case ObjectType.Commit:
ReadCommit(s, go);
break;
default:
go.Body = ReadFile(s);
break;
}
}
