How i can Extract zip file to flatten files only ? if file exist rename it?

Question

How i can Extract zip file to flatten files only ? if file exist rename it?

Dani_S 4,501

Hi,

How i can Extract zip file to flatten files only ? if file exist rename it?

Thanks,

Dani_S 4,501 Reputation points

2023-10-20T14:50:22.0533333+00:00

if file exist in target rename it?
Dani_S 4,501 Reputation points

2023-10-22T00:13:58.9366667+00:00

if i extract the same zip file cupule of times the rename file will start from 1 if exists all-time and not continue from last number.
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2023-10-24T01:47:33.5333333+00:00

May I know whether your issue has been solved or not? If you're still having problems, please explain in detail what is still going wrong and what you need help with.
Dani_S 4,501 Reputation points

2023-10-24T08:38:39.93+00:00

You rename it for one operation of extract.

But i can extract this zip file couple of times and i want the in this case to rename its files like in windows.

For example:

If I have temp.zip contain file1.txt + file2.txt

and i extract it first time i expected to get file1.txt + file2.txt

and when I extract it second time i expected to get file1(copy).txt + file2(copy).txt
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2023-10-27T09:40:16.1766667+00:00

Do you mean that after the same compressed file needs to be extracted multiple times, all the files will not be overwritten?
Dani_S 4,501 Reputation points

2023-10-27T10:51:28.5533333+00:00

I meant to make implementation of

System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath, extractionPath, true); instead of override to make rename?

Is it clear ?
Dani_S 4,501 Reputation points

2023-10-27T11:51:46.7433333+00:00

only the files that exist not override rename them.

For new files/subfolders copy them.

Is it clear ?

Accepted answer

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Your answer

Dani_S 4,501 Reputation points

2023-10-20T14:50:22.0533333+00:00

if file exist in target rename it?
Dani_S 4,501 Reputation points

2023-10-22T00:13:58.9366667+00:00

if i extract the same zip file cupule of times the rename file will start from 1 if exists all-time and not continue from last number.
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2023-10-24T01:47:33.5333333+00:00

May I know whether your issue has been solved or not? If you're still having problems, please explain in detail what is still going wrong and what you need help with.
Dani_S 4,501 Reputation points

2023-10-24T08:38:39.93+00:00

You rename it for one operation of extract.

But i can extract this zip file couple of times and i want the in this case to rename its files like in windows.

For example:

If I have temp.zip contain file1.txt + file2.txt

and i extract it first time i expected to get file1.txt + file2.txt

and when I extract it second time i expected to get file1(copy).txt + file2(copy).txt
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff

2023-10-27T09:40:16.1766667+00:00

Do you mean that after the same compressed file needs to be extracted multiple times, all the files will not be overwritten?
Dani_S 4,501 Reputation points

2023-10-27T10:51:28.5533333+00:00

I meant to make implementation of

System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath, extractionPath, true); instead of override to make rename?

Is it clear ?
Dani_S 4,501 Reputation points

2023-10-27T11:51:46.7433333+00:00

only the files that exist not override rename them.

For new files/subfolders copy them.

Is it clear ?

Answer 1

Trevor Lacey 85

When you use ZipArchive and ZipArchiveEntry, you control the folder destination for each file. For example:

string zipFilePath = "path/to/your/zipfile.zip";
string extractionPath = "path/to/extract/folder";

using ZipArchive archive = ZipFile.OpenRead(zipFilePath);
foreach (ZipArchiveEntry entry in archive.Entries)
{
    string entryFileName = Path.GetFileName(entry.FullName);

    // Handle duplicated file names by adding a unique suffix
    string destFileName = Path.Combine(extractionPath, entryFileName);
    int count = 1;
    while (File.Exists(destFileName))
    {
        string fileNameWithoutExtension = Path.GetFileNameWithoutExtension(entryFileName);
        string fileExtension = Path.GetExtension(entryFileName); 
        destFileName = Path.Combine(extractionPath, $"{fileNameWithoutExtension}_{count}{fileExtension}");
        count++;
    }

    // Extract the entry while preserving the file name
    entry.ExtractToFile(destFileName, overwrite: true);
}

Dani_S 4,501 Reputation points

2023-10-24T13:14:54.62+00:00

It works as you wrote.
Dani_S 4,501 Reputation points

2023-10-24T13:52:22.4366667+00:00

If the input file zip file with folder of files the app is crash

Dani_S 4,501

The solution to add this check before

string entryFileName = Path.GetFileName(entry.FullName);

if (entry.FullName.EndsWith('/'))//Library
                                             {
                                                 continue;
                                             }

Dani_S 4,501 Reputation points

2023-10-25T10:07:08.9133333+00:00

Please test zip file contain folder of files is not work!!!
Dani_S 4,501 Reputation points

2023-10-25T13:23:19.98+00:00

I fixed my comments it works only add the check for library.
Dani_S 4,501 Reputation points

2023-10-25T15:47:06.56+00:00

Please I need another functuality.

Extract zip file that contain folder in it not flatten the files.

if file exists rename it, is subfolder not exists create it with her files.
Dani_S 4,501 Reputation points

2023-10-25T16:38:34.9033333+00:00
i,e implement it with rename not override

System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath, extractionPath);// no ovreride
Dani_S 4,501 Reputation points

2023-10-26T06:07:46.9633333+00:00

Can you please answer my last comments ?
Dani_S 4,501 Reputation points

2023-10-27T09:35:21.8366667+00:00

Can you please answer this scenario?
Dani_S 4,501 Reputation points

2023-10-27T10:47:36.72+00:00

I meant to make implementation of

System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath, extractionPath, true); instead of override to make rename?

Is it clear ?
Rob Caplan - MSFT 6,037 Reputation points Microsoft Employee Moderator

2023-10-27T17:34:48.82+00:00

@Trevor Lacey 's sample code demonstrates how to rename on collision. If you need more in depth help you can open a support case to work with somebody 1:1 through the methods at .Net Support - Get Help

Please note that your question is not directly related to Maui but is a general .Net System.IO question.

Dani_S 4,501

Hi Rob,

1.@Trevor Lacey 's sample code was great , it solved the first problem of extracting zip file to flatten files with rename.

2.I have another problem of making implementation of

System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath, extractionPath, true); instead of override to make rename.

i tried to first extract the zip file to temp extraction path.

Later to traverse recursively the files and folder.

In process folder function i have problem to find the path

of the gaped sub folder in order to create it .

Help will be appreciated.

string zipFilePath = zipPathForFolderOrPathForFile;
string extractionPath = SelectedItem.Path;
string guid = Guid.NewGuid().ToString();
 string tempExtractionPath = Path.Combine(extractionPath, guid);
                                         System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath,tempExtractionPath);// no override

                                         ProcessDirectory(tempExtractionPath, guid);

 // Process all files in the directory passed in, recurse on any directories 
// that are found, and process the files they contain.
private void ProcessDirectory(string sourceDirectory, string guid)
        {
// Process the list of files found in the directory.
string[] fileEntries = Directory.GetFiles(sourceDirectory);
            foreach (string fileName in fileEntries)
                ProcessFile(fileName, guid);

            // Recurse into subdirectories of this directory.
            string[] subdirectoryEntries = Directory.GetDirectories(sourceDirectory);
            foreach (string subdirectory in subdirectoryEntries)
            {
// I have problem  with creating the new subfolder that not exists.
             //   var newSubDirectory = subdirectory.Substring(0, subdirectory.LastIndexOf(Path.DirectorySeparatorChar));
             //   if(!Directory.Exists(newSubDirectory))
              //  {
                   // Directory.CreateDirectory(newSubDirectory);
              //  }
                
                ProcessDirectory(subdirectory, guid);
            }
        }

        // Insert logic for processing found files here.
        private void ProcessFile(string path, string guid)
        {
           
            var newFile = path.Substring(0, path.LastIndexOf(Path.DirectorySeparatorChar));
            newFile = newFile.Replace(Path.Combine(Path.DirectorySeparatorChar.ToString(),guid), string.Empty);
            newFile = Path.Combine(newFile,Path.GetFileName(path));

            int count = 1;
            while (File.Exists(newFile))
            {
                string fileNameWithoutExtension = Path.GetFileNameWithoutExtension(newFile);
                string fileExtension = Path.GetExtension(newFile);
                newFile = Path.Combine(Path.GetDirectoryName(newFile),$"{fileNameWithoutExtension}_Copy{count}{fileExtension}");
                count++;
            }

            File.Create(newFile);
        }

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How i can Extract zip file to flatten files only ? if file exist rename it?

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