public string GetCurrentDirectory(string path = null)
{
string volume = path == null ? lastVolume : extendedFileService.GetCanonicalRoot(fileService, path);
string directory;
if (this.volumeDirectories.TryGetValue(volume, out directory))
{
AddEntry(directory, volume);
return(directory);
}
else
{
// Try to get the hidden environment variable (e.g. "=C:") for the given drive if available
string driveLetter = extendedFileService.GetDriveLetter(fileService, path);
if (driveLetter != null)
{
string environmentPath = NativeMethods.GetEnvironmentVariable("=" + driveLetter.Substring(0, 2));
if (environmentPath != null)
{
AddEntry(environmentPath);
return(environmentPath);
}
}
// Nothing is set yet, assume the root
string root = Paths.GetRoot(path);
AddEntry(root);
return(root);
}
}
/// <summary>
/// Get the current directory for the volume of the given path. If no path is given, returns the volume for the last
/// set current directory.
/// </summary>
public string GetCurrentDirectory(string path = null)
{
// Find the path's volume or use the last set volume if there is no path
string volume = path == null ? _lastVolume : _extendedFileService.GetCanonicalRoot(_fileService, path);
string directory;
if (_volumeDirectories.TryGetValue(volume, out directory))
{
// We have a current directory from this volume
AddEntry(directory, volume);
return(directory);
}
else
{
// No current directory yet for this volume
// Try to get the hidden environment variable (e.g. "=C:") for the given drive if available
string driveLetter = _extendedFileService.GetDriveLetter(_fileService, path);
if (!string.IsNullOrEmpty(driveLetter))
{
string environmentPath = Processes.GetEnvironmentVariable("=" + driveLetter.Substring(0, 2));
if (environmentPath != null)
{
AddEntry(environmentPath);
return(environmentPath);
}
}
// No stashed environment variable, add the root of the path as our current directory
string root = Paths.GetRoot(path);
AddEntry(root);
return(root);
}
}