ToFile() public method

Construct a filename where the loose object having a specified SHA-1 should be stored. If the object is stored in a shared repository the path to the alternative repo will be returned. If the object is not yet store a usable path in this repo will be returned. It is assumed that callers will look for objects in a pack first.
public ToFile ( AnyObjectId objectId ) : FileInfo
objectId AnyObjectId
return FileInfo
Repository Class Documentation
Example #1
0
        internal ObjectId WriteObject(ObjectType type, long len, Stream input, bool store)
        {
            FileInfo             info;
            DeflaterOutputStream stream;
            FileStream           stream2;
            ObjectId             objectId = null;

            if (store)
            {
                info    = _r.ObjectsDirectory.CreateTempFile("noz");
                stream2 = info.OpenWrite();
            }
            else
            {
                info    = null;
                stream2 = null;
            }

            _md.Reset();
            if (store)
            {
                _def.Reset();
                stream = new DeflaterOutputStream(stream2, _def);
            }
            else
            {
                stream = null;
            }

            try
            {
                int    num;
                byte[] bytes = Codec.EncodedTypeString(type);
                _md.Update(bytes);
                if (stream != null)
                {
                    stream.Write(bytes, 0, bytes.Length);
                }

                _md.Update(0x20);
                if (stream != null)
                {
                    stream.WriteByte(0x20);
                }

                bytes = Constants.encodeASCII(len.ToString());
                _md.Update(bytes);
                if (stream != null)
                {
                    stream.Write(bytes, 0, bytes.Length);
                }

                _md.Update(0);
                if (stream != null)
                {
                    stream.WriteByte(0);
                }
                while ((len > 0L) && ((num = input.Read(_buf, 0, (int)Math.Min(len, _buf.Length))) > 0))
                {
                    _md.Update(_buf, 0, num);
                    if (stream != null)
                    {
                        stream.Write(_buf, 0, num);
                    }
                    len -= num;
                }

                if (len != 0L)
                {
                    throw new IOException("Input did not match supplied Length. " + len + " bytes are missing.");
                }

                if (stream != null)
                {
                    stream.Close();
                    if (info != null)
                    {
                        info.IsReadOnly = true;
                    }
                }
                objectId = ObjectId.FromRaw(_md.Digest());
            }
            finally
            {
                if ((objectId == null) && (stream != null))
                {
                    try
                    {
                        stream.Close();
                    }
                    finally
                    {
                        info.DeleteFile();
                    }
                }
            }
            if (info != null)
            {
                if (_r.HasObject(objectId))
                {
                    // Object is already in the repository so remove
                    // the temporary file.
                    //
                    info.DeleteFile();
                }
                else
                {
                    FileInfo info2 = _r.ToFile(objectId);
                    if (!info.RenameTo(info2.FullName))
                    {
                        // Maybe the directory doesn't exist yet as the object
                        // directories are always lazily created. Note that we
                        // try the rename first as the directory likely does exist.
                        //
                        if (info2.Directory != null)
                        {
                            info2.Directory.Create();
                        }
                        if (!info.RenameTo(info2.FullName) && !_r.HasObject(objectId))
                        {
                            // The object failed to be renamed into its proper
                            // location and it doesn't exist in the repository
                            // either. We really don't know what went wrong, so
                            // fail.
                            //
                            info.DeleteFile();
                            throw new ObjectWritingException("Unable to create new object: " + info2);
                        }
                    }
                }
            }
            return(objectId);
        }