private SegmentInfo ReadUpgradedSegmentInfo(string name, Directory dir, IndexInput input)
        {
            CodecUtil.CheckHeader(input, Lucene3xSegmentInfoFormat.UPGRADED_SI_CODEC_NAME, Lucene3xSegmentInfoFormat.UPGRADED_SI_VERSION_START, Lucene3xSegmentInfoFormat.UPGRADED_SI_VERSION_CURRENT);
            string version = input.ReadString();

            int docCount = input.ReadInt();

            IDictionary <string, string> attributes = input.ReadStringStringMap();

            bool isCompoundFile = input.ReadByte() == SegmentInfo.YES;

            IDictionary <string, string> diagnostics = input.ReadStringStringMap();

            ISet <string> files = input.ReadStringSet();

            SegmentInfo info = new SegmentInfo(dir, version, name, docCount, isCompoundFile, null, diagnostics, CollectionsHelper.UnmodifiableMap(attributes));

            info.Files = files;
            return(info);
        }
        public override SegmentInfo Read(Directory dir, string segment, IOContext context)
        {
            string     fileName = IndexFileNames.SegmentFileName(segment, "", Lucene40SegmentInfoFormat.SI_EXTENSION);
            IndexInput input    = dir.OpenInput(fileName, context);
            bool       success  = false;

            try
            {
                CodecUtil.CheckHeader(input, Lucene40SegmentInfoFormat.CODEC_NAME, Lucene40SegmentInfoFormat.VERSION_START, Lucene40SegmentInfoFormat.VERSION_CURRENT);
                string version  = input.ReadString();
                int    docCount = input.ReadInt32();
                if (docCount < 0)
                {
                    throw new CorruptIndexException("invalid docCount: " + docCount + " (resource=" + input + ")");
                }
                bool isCompoundFile = input.ReadByte() == SegmentInfo.YES;
                IDictionary <string, string> diagnostics = input.ReadStringStringMap();
                input.ReadStringStringMap(); // read deprecated attributes
                ISet <string> files = input.ReadStringSet();

                CodecUtil.CheckEOF(input);

                SegmentInfo si = new SegmentInfo(dir, version, segment, docCount, isCompoundFile, null, diagnostics);
                si.SetFiles(files);

                success = true;

                return(si);
            }
            finally
            {
                if (!success)
                {
                    IOUtils.CloseWhileHandlingException(input);
                }
                else
                {
                    input.Dispose();
                }
            }
        }
        private SegmentInfo ReadUpgradedSegmentInfo(string name, Directory dir, IndexInput input)
        {
            CodecUtil.CheckHeader(input, Lucene3xSegmentInfoFormat.UPGRADED_SI_CODEC_NAME, Lucene3xSegmentInfoFormat.UPGRADED_SI_VERSION_START, Lucene3xSegmentInfoFormat.UPGRADED_SI_VERSION_CURRENT);
            string version = input.ReadString();

            int docCount = input.ReadInt();

            IDictionary<string, string> attributes = input.ReadStringStringMap();

            bool isCompoundFile = input.ReadByte() == SegmentInfo.YES;

            IDictionary<string, string> diagnostics = input.ReadStringStringMap();

            ISet<string> files = input.ReadStringSet();

            SegmentInfo info = new SegmentInfo(dir, version, name, docCount, isCompoundFile, null, diagnostics, CollectionsHelper.UnmodifiableMap(attributes));
            info.Files = files;
            return info;
        }