Question

给定目录树，根文件夹名称为“rootuploaded”，我需要使用以下规则将此树中的文件组合成一些组：

无法对不同子文件夹中的文件进行分组。
组中的文件可能具有相同或不同的扩展名。
每个组必须至少有2个文件，最多5个文件。
根据6种命名约定（自上而下优先级）对文件进行分组：
1. FileName.ext，FileName_anything.ext，FileName_anythingelse.ext，...
2. FileName.ext，FileName-anything.ext，FileName-anythingelse.ext，...
3. FileName_1.ext，FileName_2.ext，...，FileName_N.ext（可能不连续）
4. FileName-1.ext，FileName-2.ext，...，FileName-N.ext（可能不连续）
5. FileName 1.ext，FileName 2.ext，...，FileName N.ext（可能不连续）
6. FileName1.ext，FileName2.ext，...，FileNameN.ext（可能不连续）

以下是程序输入和输出的简单示例：

输入是一个目录树，如下所示：

rootuploaded \ samplefolder的\ 1232_2342.jpg
rootuploaded \ samplefolder的\ 1232_234234_1.jpg
rootuploaded \ samplefolder的\ 1232_234234_2.bmp
rootuploaded \文件5.txt
rootuploaded \文件-67.txt
rootuploaded \文件A.TXT
rootuploaded \ FILE1.TXT
rootuploaded \ FILE2.TXT
rootuploaded \ file5.txt
rootuploaded \ filea.txt
rootuploaded \ file_sample.txt
rootuploaded \ file_sample_a.txt

输出：

第1组

rootuploaded\samplefolder\1232_234234_1.jpg
rootuploaded\samplefolder\1232_234234_2.bmp

第2组

rootuploaded\file1.txt
rootuploaded\file2.txt
rootuploaded\file5.txt

第3组

rootuploaded\file-5.txt
rootuploaded\file-67.txt

第4组

rootuploaded\file_sample.txt
rootuploaded\file_sample_a.txt

无法分组

rootuploaded\samplefolder\1232_2342.jpg
rootuploaded\file-a.txt
rootuploaded\filea.txt

Answer 1

使用正则表达式进行分组。 Linq的方法GroupBy和Take可能对其他方法有所帮助。

Answer 2

以下是一些不使用Linq的示例代码。 CreateGroups将返回列表列表。每个外部列表都匹配特定的正则表达式。内部列表中的项是与正则表达式匹配的输入。

using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;

public class Test
{
    public string[] TestInput = new string[]
    {
        @"rootuploaded\samplefolder\1232_234234_1.jpg",
        @"rootuploaded\samplefolder\1232_234234_2.bmp",
        @"rootuploaded\file-5.txt",
        @"rootuploaded\file-67.txt",
        @"rootuploaded\file-a.txt",
        @"rootuploaded\file1.txt",
        @"rootuploaded\file2.txt",
        @"rootuploaded\file5.txt",
        @"rootuploaded\filea.txt",
        @"rootuploaded\file_sample.txt",
        @"rootuploaded\file_sample_a.txt"
    };

    public string[] RegularExpressions = new string[]
    {
        "[A-Za-z_]+",
        "[A-Za-z-]+",
        "[A-Za-z]+_[0-9]+",
        "[A-Za-z]+-[0-9]+",
        "[A-Za-z]+ [0-9]+",
        "[A-Za-z]+[0-9]+"
    };

    public List<List<string>> CreateGroups(string[] inputs)
    {
        List<List<string>> output = new List<List<string>>(RegularExpressions.Length);

        for (int i = 0; i < RegularExpressions.Length; ++i)
            output.Add(new List<string>());

        foreach (string input in inputs)
        {
            string filename = Path.GetFileNameWithoutExtension(input);

            for (int i = 0; i < RegularExpressions.Length; ++i)
            {
                Match match = Regex.Match(filename, RegularExpressions[i]);

                if (match.Success && match.Length == filename.Length)
                {
                    output[i].Add(input);
                    break;
                }
            }
        }

        return output;
    }
}

显示结果的示例：

Test test = new Test();
var output = test.CreateGroups(test.TestInput);

foreach (List<string> list in output)
{
    string group = "Group:\r\n";

    foreach (string item in list)
        group += "\t" + item + "\r\n";

    Console.WriteLine(group);
}

如何根据文件夹

2 个答案: