如何遞歸搜索具有多個通配符的目錄？

Question

使用 C# (.NET)，如何在給定目錄搜索掩碼的情況下搜索文件系統，如下所示：(?)

\\server\Scanner\images\*Images\*\*_*

例如，我需要先找到所有頂級目錄：

\\server\Scanner\images\Job1Images
\\server\Scanner\images\Job2Images

...然后我需要進一步處理搜索掩碼：

\\server\Scanner\images\Job1Images\*\*_*
\\server\Scanner\images\Job2Images\*\*_*

這似乎並不太復雜，但我一生都無法弄清楚......

如上所述，我使用的是 C# 和 .NET。 搜索可以嘗試定位目錄或文件。 （即 *.txt 或 <*目錄>）

Answer 1

像這樣：

頂級目錄：

  //get Top level
   string[] TopLevel = Directory.GetDirectories(path);

然后，您將必須使用通配符模式對該文件夾執行遞歸功能，例如：

 // Only get subdirectories that begin with the letter "p." 
            string pattern = "p*";
            string[] dirs = folder.GetDirectories(path, pattern);

我建議您使用通配符來獲取數組輸出，如果使用遞歸函數或直接查詢路徑，則將找出哪種方法是最佳方法。

Answer 2

編輯 ：啊，.NET 4的新功能，因此您不必執行遞歸功能（感謝Matthew Brubaker）

IEnumerable<String> matchingFilePaths2 = System.IO.Directory.EnumerateFiles(@"C:\some folder to start in", filePatternToMatchOn, System.IO.SearchOption.AllDirectories);

第一答案：

//get all files that have an underscore - searches all folders under the start folder
List<String> matchingFilePaths = new List<string>();
String filePatternToMatchOn = "*_*";
FileUtilities.GetAllFilesMatchingPattern(@"C:\some folder to start in", ref matchingFilePaths, filePatternToMatchOn);

...

public static void GetAllFilesMatchingPattern(String pathToGetFilesIn, ref List<String> fullFilePaths, String searchPattern)
{
    //get all files in current directory that match the pattern
    String[] filePathsInCurrentDir = Directory.GetFiles(pathToGetFilesIn, searchPattern);
    foreach (String fullPath in filePathsInCurrentDir)
    {
        fullFilePaths.Add(fullPath);
    }

    //call this method recursively for all directories
    String[] directories = Directory.GetDirectories(pathToGetFilesIn);
    foreach (String path in directories)
    {
        GetAllFilesMatchingPattern(path, ref fullFilePaths, searchPattern);
    }
}

Answer 3

    public static IEnumerable<string> GetImages()
{    
    //For each "*Image" directory
    foreach (var jobFolder in Directory.EnumerateDirectories(@"\\server\Scanner\images", "*Images"))
    {
        //For each first level subdirectory
        foreach (var jobSubFolder in Directory.EnumerateDirectories(jobFolder))
        {
            //Enumerate each file containing a '_'
            foreach (var filePath in Directory.EnumerateFiles(jobSubFolder, "*_*", SearchOption.TopDirectoryOnly))
            {                               
                yield return filePath;
            }
        }
    }
}

僅枚舉每個“ * Image”目錄的第一級子目錄中的文件。

最后，您可以將其用於：

foreach (var path in GetImages())
            {
                Console.WriteLine(path);
            }

Answer 4

有一個 C# 過程，您可以在其中按路徑模式搜索文件夾，並使用 * 和 ? 等通配符。

例如，如果將路徑模式 C:\\Folder?*\\Folder2 傳遞給程序，則將返回文件夾路徑列表

C:\\文件夾 1\\A\\文件夾 2

C:\\文件夾A\\B\\文件夾2

...

等等

static List<string> GetFoldersByPathPattern(string folderPathPattern)
{
    List<string> directories = new List<string>();
    directories.Add("");

    string[] folderParts = folderPathPattern.Split(new char[] { '\\' }, StringSplitOptions.None);
    foreach (string folderPart in folderParts)
    {

        if (folderPart.Contains('*') || folderPart.Contains('?'))
        {
            List<string> newDirectories = new List<string>();

            foreach (string directory in directories)
            {
                foreach (string newDirectory in Directory.GetDirectories(directory, folderPart))
                {
                    newDirectories.Add(newDirectory);
                }
            }

            directories = newDirectories;
        }
        else
        {
            for (int i = 0; i < directories.Count(); i++)
            {
                directories[i] = directories[i] + folderPart + "\\";
            }
        }
    }

    return directories;
}