| using J2N.Text; |
| using Lucene.Net.Diagnostics; |
| using System.Globalization; |
| using System.IO; |
| using System.Text; |
| using System.Text.RegularExpressions; |
| |
| namespace Lucene.Net.Analysis.Ja.Util |
| { |
| /* |
| * 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. |
| */ |
| |
| public class ConnectionCostsBuilder |
| { |
| private static readonly Regex whiteSpaceRegex = new Regex("\\s+", RegexOptions.Compiled); |
| |
| private ConnectionCostsBuilder() |
| { |
| } |
| |
| public static ConnectionCostsWriter Build(string filename) |
| { |
| using (Stream inputStream = new FileStream(filename, FileMode.Open, FileAccess.Read)) |
| { |
| StreamReader streamReader = new StreamReader(inputStream, Encoding.ASCII); |
| |
| string line = streamReader.ReadLine(); |
| string[] dimensions = whiteSpaceRegex.Split(line).TrimEnd(); |
| |
| if (Debugging.AssertsEnabled) Debugging.Assert(dimensions.Length == 2); |
| |
| int forwardSize = int.Parse(dimensions[0], CultureInfo.InvariantCulture); |
| int backwardSize = int.Parse(dimensions[1], CultureInfo.InvariantCulture); |
| |
| if (Debugging.AssertsEnabled) Debugging.Assert(forwardSize > 0 && backwardSize > 0); |
| |
| ConnectionCostsWriter costs = new ConnectionCostsWriter(forwardSize, backwardSize); |
| |
| while ((line = streamReader.ReadLine()) != null) |
| { |
| string[] fields = whiteSpaceRegex.Split(line).TrimEnd(); |
| |
| if (Debugging.AssertsEnabled) Debugging.Assert(fields.Length == 3); |
| |
| int forwardId = int.Parse(fields[0], CultureInfo.InvariantCulture); |
| int backwardId = int.Parse(fields[1], CultureInfo.InvariantCulture); |
| int cost = int.Parse(fields[2], CultureInfo.InvariantCulture); |
| |
| costs.Add(forwardId, backwardId, cost); |
| } |
| return costs; |
| } |
| } |
| } |
| } |