File Scanner

FileScanner is a tool that scans directories recursively searching for files. It uses concurrent threads.

FileScanner fileScanner = new FileScanner();

It needs to be populated with filters, such as wildcard pattern with .AddFilename(string).

fileScanner.AddFilename("*.zip");

Or regular expressions.

fileScanner.AddRegex(".", new Regex(@".*\.zip"));

Or glob pattern.

fileScanner.AddGlobPattern(".", "**.zip");

Search is started when IEnumerator<string> is taken from the scanner.

foreach (string filepath in fileScanner)
{
    Console.WriteLine(filepath);
}

Exceptions that occur at real-time can be captured into concurrent collection.

fileScanner.errors = new ConcurrentBag<Exception>();

Glob Pattern

Glob pattern is a file matching pattern, an alternatite to wildcard pattern.

Glob pattern uses the following notation:

• "*" matches to string of characters within the same directory.
• "?" matches to any character except directory separator.
• "**" matches to any characters, including directory separators.

Regex globPattern = new GlobPattern("**/*.dll/**.resources");

Test matching. "somefile.zip/" is excluded because of the separator in the pattern.

string[] files = new[]
{
    "somefile.zip",
    "somefile.zip/somefile.ext",
    "somefile.zip/somefile.ext/someresource",
    "somefile.zip/somelib.dll",
    "somefile.zip/somelib.dll/someresource.resources",
    "somelib.dll",
    "somelib.dll/someresource.resources",
};

foreach (string filename in files.Where(fn => globPattern.IsMatch(fn)))
    Console.WriteLine(filename);

The result.

somefile.zip/somelib.dll/someresource.resources