public IEnumerable <Record> ReadRecordsFromDecompressedStream(Stream decompressedStream)
        {
            var wrapper = new WrapperStream(decompressedStream);

            var binaryReader = new BinaryReader(wrapper);

            int fileFormatVersion = binaryReader.ReadInt32();

            // the log file is written using a newer version of file format
            // that we don't know how to read
            if (fileFormatVersion > BinaryLogger.FileFormatVersion)
            {
                var text = $"Unsupported log file format. Latest supported version is {BinaryLogger.FileFormatVersion}, the log file has version {fileFormatVersion}.";
                throw new NotSupportedException(text);
            }

            long lengthOfBlobsAddedLastTime = 0;

            List <Record> blobs = new List <Record>();

            using var reader = new BuildEventArgsReader(binaryReader, fileFormatVersion);

            // forward the events from the reader to the subscribers of this class
            reader.OnBlobRead += OnBlobRead;

            long start = 0;

            reader.OnBlobRead += (kind, blob) =>
            {
                start = wrapper.Position;

                var record = new Record
                {
                    Bytes  = blob,
                    Args   = null,
                    Start  = start - blob.Length, // TODO: check if this is accurate
                    Length = blob.Length
                };

                blobs.Add(record);
                lengthOfBlobsAddedLastTime += blob.Length;
            };

            reader.OnStringRead += text =>
            {
                long length = wrapper.Position - start;

                // re-read the current position as we're just about to start reading
                // the actual BuildEventArgs record
                start = wrapper.Position;

                OnStringRead?.Invoke(text, length);
            };

            reader.OnNameValueListRead += list =>
            {
                long length = wrapper.Position - start;
                start = wrapper.Position;
                OnNameValueListRead?.Invoke(list, length);
            };

            while (true)
            {
                BuildEventArgs instance = null;

                start = wrapper.Position;

                instance = reader.Read();
                if (instance == null)
                {
                    break;
                }

                var record = new Record
                {
                    Bytes  = null, // probably can reconstruct this from the Args if necessary
                    Args   = instance,
                    Start  = start,
                    Length = wrapper.Position - start
                };

                yield return(record);

                lengthOfBlobsAddedLastTime = 0;
            }

            foreach (var blob in blobs)
            {
                yield return(blob);
            }
        }
Ejemplo n.º 2
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        public IEnumerable <Record> ReadRecordsFromDecompressedStream(Stream decompressedStream)
        {
            var wrapper = new WrapperStream(decompressedStream);

            var binaryReader = new BinaryReader(wrapper);

            int fileFormatVersion = binaryReader.ReadInt32();

            // the log file is written using a newer version of file format
            // that we don't know how to read
            if (fileFormatVersion > BinaryLogger.FileFormatVersion)
            {
                var text = $"Unsupported log file format. Latest supported version is {BinaryLogger.FileFormatVersion}, the log file has version {fileFormatVersion}.";
                throw new NotSupportedException(text);
            }

            long lengthOfBlobsAddedLastTime = 0;

            List <Record> blobs = new List <Record>();

            var reader = new BuildEventArgsReader(binaryReader, fileFormatVersion);

            reader.OnBlobRead += (kind, blob) =>
            {
                var record = new Record
                {
                    Bytes  = blob,
                    Args   = null,
                    Start  = 0, // TODO: see if we can re-add that
                    Length = blob.Length
                };

                blobs.Add(record);
                lengthOfBlobsAddedLastTime += blob.Length;
            };

            while (true)
            {
                BuildEventArgs instance = null;

                long start = wrapper.Position;

                instance = reader.Read();
                if (instance == null)
                {
                    break;
                }

                var record = new Record
                {
                    Bytes  = null, // probably can reconstruct this from the Args if necessary
                    Args   = instance,
                    Start  = start,
                    Length = wrapper.Position - start
                };

                yield return(record);

                lengthOfBlobsAddedLastTime = 0;
            }

            foreach (var blob in blobs)
            {
                yield return(blob);
            }
        }