Question

所以我有Text文件我读过，在这个文件中我有这样的表：

My data Statistics:
=============================================================
Bla bla                                           : 120
Bla bla bla bla                                   : 1
Number of files                                   : 1
Size                                              : 1
Total                                             : 1

这个表在Text内多次出现，我这样读了这个表：

StreamReader reader...
string text = reader.ReadToEnd();
MatchCollection matches = Regex.Matches(text, "My data Statistics:");

现在我想将Last表放在文件中：

int count = matches.Count;
Match match = matches[count - 1];

从这里我需要你的帮助：

根据字符串和值读取表并解析表的最佳方法是什么，例如：

第一行中的字符串为Bla bla，值为120

Answer 1

我创建了一个简单的演示程序来解释如何执行此操作的可能性。首先，我认为您的演示代码中存在一些错误。当你说，你需要找到文本中的最后一个表。我不明白你如何使用正则表达式找到这个位置。

我试图通过评论解释代码。玩得开心。

using System;
using System.Linq;
using System.Collections.Generic;

public class Program
{
  // Text as member here
  private static readonly string Text = "My data Statistics:\n" +
                                        "=============================================================\n" +
                                        "Bla bla                                           : 120\n" +
                                        "Bla bla bla bla                                   : 1\n" +
                                        "Number of files                                   : 1\n" +
                                        "Size                                              : 1\n" +
                                        "Total                                             : 1\n" + "\n";

  // Define how to now when a table starts and when it ends


  // Table starts when line is "My data Statistics:"
  private static readonly string TableStartMarker = "My data Statistics:";
  // Table ends when line is empty??? Not specified in question
  private static readonly string TableEndMarker = "";

  public static void Main()
  {
    //  Split text by \n to get lines
    var lines = new List<string>(Text.Split('\n'));
    // Find last line where content is the TableStartMarker (My data statistics... 
    var lastTableStart = lines.FindLastIndex(x => x == TableStartMarker);

    //Iterate over all lines starting from last table header
    foreach (var line in lines.Skip(lastTableStart))
    {
      // if line is empty -> table has endend
      if (line == TableEndMarker)
        return;

      //now we have content -> split by :
      var split = line.Split(':');
      if (split.Length < 2)
        continue;

      //remove whitespaces and there you go: key and value
      var key = split[0].TrimEnd();
      var value = split[1].TrimStart();
      Console.WriteLine(string.Format("Key: {0}, Value: {1}", key, value));
    }

  }

}

c＃regex：从文本文件中解析最后一个表

1 个答案: