| using J2N.Text; |
| using System; |
| using System.Text; |
| |
| namespace Lucene.Net.Benchmarks.ByTask.Feeds |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /// <summary> |
| /// Parser for the FR94 docs in trec disks 4+5 collection format |
| /// </summary> |
| public class TrecFR94Parser : TrecDocParser |
| { |
| private const string TEXT = "<TEXT>"; |
| private static readonly int TEXT_LENGTH = TEXT.Length; |
| private const string TEXT_END = "</TEXT>"; |
| |
| private const string DATE = "<DATE>"; |
| private static readonly string[] DATE_NOISE_PREFIXES = { |
| "DATE:", |
| "date:", //TODO improve date extraction for this format |
| "t.c.", |
| }; |
| private const string DATE_END = "</DATE>"; |
| |
| //TODO can we also extract title for this format? |
| |
| public override DocData Parse(DocData docData, string name, TrecContentSource trecSrc, |
| StringBuilder docBuf, ParsePathType pathType) |
| { |
| int mark = 0; // that much is skipped |
| // optionally skip some of the text, set date (no title?) |
| DateTime? date = null; |
| int h1 = docBuf.IndexOf(TEXT, StringComparison.Ordinal); |
| if (h1 >= 0) |
| { |
| int h2 = docBuf.IndexOf(TEXT_END, h1, StringComparison.Ordinal); |
| mark = h1 + TEXT_LENGTH; |
| // date... |
| string dateStr = Extract(docBuf, DATE, DATE_END, h2, DATE_NOISE_PREFIXES); |
| if (dateStr != null) |
| { |
| dateStr = StripTags(dateStr, 0).ToString(); |
| date = trecSrc.ParseDate(dateStr.Trim()); |
| } |
| } |
| docData.Clear(); |
| docData.Name = name; |
| docData.SetDate(date); |
| docData.Body = StripTags(docBuf, mark).ToString(); |
| return docData; |
| } |
| } |
| } |