//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: @Override public void write(store.Directory directory, String segmentName, String segmentSuffix, index.FieldInfos infos, store.IOContext context) throws java.io.IOException
        public override void write(Directory directory, string segmentName, string segmentSuffix, FieldInfos infos, IOContext context)
        {
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final String fileName = index.IndexFileNames.segmentFileName(segmentName, segmentSuffix, FIELD_INFOS_EXTENSION);
            string      fileName = IndexFileNames.segmentFileName(segmentName, segmentSuffix, FIELD_INFOS_EXTENSION);
            IndexOutput @out     = directory.createOutput(fileName, context);
            BytesRef    scratch  = new BytesRef();
            bool        success  = false;

            try
            {
                SimpleTextUtil.write(@out, NUMFIELDS);
                SimpleTextUtil.write(@out, Convert.ToString(infos.size()), scratch);
                SimpleTextUtil.WriteNewline(@out);

                foreach (FieldInfo fi in infos)
                {
                    SimpleTextUtil.write(@out, NAME);
                    SimpleTextUtil.write(@out, fi.name, scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, NUMBER);
                    SimpleTextUtil.write(@out, Convert.ToString(fi.number), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, ISINDEXED);
                    SimpleTextUtil.write(@out, Convert.ToString(fi.Indexed), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    if (fi.Indexed)
                    {
                        Debug.Assert(fi.IndexOptions.compareTo(FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) >= 0 || !fi.hasPayloads());
                        SimpleTextUtil.write(@out, INDEXOPTIONS);
                        SimpleTextUtil.write(@out, fi.IndexOptions.ToString(), scratch);
                        SimpleTextUtil.WriteNewline(@out);
                    }

                    SimpleTextUtil.write(@out, STORETV);
                    SimpleTextUtil.write(@out, Convert.ToString(fi.hasVectors()), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, PAYLOADS);
                    SimpleTextUtil.write(@out, Convert.ToString(fi.hasPayloads()), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, NORMS);
                    SimpleTextUtil.write(@out, Convert.ToString(!fi.omitsNorms()), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, NORMS_TYPE);
                    SimpleTextUtil.write(@out, getDocValuesType(fi.NormType), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, DOCVALUES);
                    SimpleTextUtil.write(@out, getDocValuesType(fi.DocValuesType), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    SimpleTextUtil.write(@out, DOCVALUES_GEN);
                    SimpleTextUtil.write(@out, Convert.ToString(fi.DocValuesGen), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    IDictionary <string, string> atts = fi.attributes();
                    int numAtts = atts == null ? 0 : atts.Count;
                    SimpleTextUtil.write(@out, NUM_ATTS);
                    SimpleTextUtil.write(@out, Convert.ToString(numAtts), scratch);
                    SimpleTextUtil.WriteNewline(@out);

                    if (numAtts > 0)
                    {
                        foreach (KeyValuePair <string, string> entry in atts.SetOfKeyValuePairs())
                        {
                            SimpleTextUtil.write(@out, ATT_KEY);
                            SimpleTextUtil.write(@out, entry.Key, scratch);
                            SimpleTextUtil.WriteNewline(@out);

                            SimpleTextUtil.write(@out, ATT_VALUE);
                            SimpleTextUtil.write(@out, entry.Value, scratch);
                            SimpleTextUtil.WriteNewline(@out);
                        }
                    }
                }
                SimpleTextUtil.WriteChecksum(@out, scratch);
                success = true;
            }
            finally
            {
                if (success)
                {
                    @out.close();
                }
                else
                {
                    IOUtils.closeWhileHandlingException(@out);
                }
            }
        }