A SearchPattern contain multiple search pattern in SevenZipSharp

Question

I use SevenZipSharp to compress my files and directories.

I use the following code and it works well:

var searchPattern = "*.txt";
compressor.CompressDirectory(directory, archiveName, password, searchPattern, recursion);

Now, i want filter the directory files by a more complicated SearchPattern like this:

var searchPattern = "*.txt && *.xml";
compressor.CompressDirectory(directory, archiveName, password, searchPattern, recursion);

In this case i get:

Index was outside the bounds of the array

Is there a way to do this by SearchPattern? If NO, How can i do this?

Answer 1

The answer is no, you can't do this with SearchPattern.

---

As you can see in the source code here:

public void CompressDirectory(
            string directory, Stream archiveStream,
            string password = "", string searchPattern = "*", bool recursion = true)
        {
        ...
#if CS4
            files.AddRange((new DirectoryInfo(directory)).GetFiles(searchPattern).Select(fi => fi.FullName));
#else
            foreach (FileInfo fi in (new DirectoryInfo(directory)).GetFiles(searchPattern))
            {
                files.Add(fi.FullName);
            }
#endif
        ...
        }

Internally, SevenZipSharp calls Directory.GetFiles, which doesn't support multiple masks.

---

So you have several alternatives:

• Compress the extensions one by one (creating the archive the first time, and then adding the files to the directory)
• Create another overload managing several extensions (regex?) and contribute to the project