internal PscxSevenZipReader(PscxCmdlet command, FileInfo file, ArchiveFormat format) :
base(command, file, format)
{
command.WriteDebug(String.Format("Created {0} reader for {1}.", format, file));
}
public int GetStream(uint index, out ISequentialOutStream outStream, AskMode askExtractMode)
{
//return 0x80004004L; // E_ABORT
// S_FALSE = 1
// S_OK = 0
// todo: check if index matches an entry in _entries, setup the stream.
Debug.WriteLine(String.Format("Mode: {0}; ArchiveCallback->GetStream {1}", askExtractMode, index));
_currentIndex = index;
if (askExtractMode == AskMode.kSkip)
{
var stream = new OutStreamWrapper(new MemoryStream());
outStream = stream;
return(0);
}
string _transform_pattern = null;
string _transform_text = null;
// if transform is specified, make sure it is well formed
if (_transform != null)
{
// substitute pattern specified in _transform
// _transform is split by "/", i.e. "regex/replacement"
string[] transform_data = _transform.Split('/');
if (transform_data.Length == 2)
{
_transform_pattern = transform_data[0];
_transform_text = transform_data[1];
// remove any escape chars from the text
_transform_text = Regex.Unescape(_transform_text);
_command.WriteDebug("ArchiveCallback->GetStream transform_pattern: " + _transform_pattern);
_command.WriteDebug("ArchiveCallback->GetStream transform_text: " + _transform_text);
}
else
{
// bad transform, error...
_command.WriteWarning("Transform must be in the form regex/text!");
outStream = null;
return(1); // S_FALSE
}
}
try
{
if ((_entries.ContainsKey(index)) && (askExtractMode == AskMode.kExtract))
{
// ensure output directory is base
_currentEntry = _entries[index];
if (_transform_pattern != null)
{
// substitute pattern specified in _transform_pattern with _transform_text
Regex transformer = new Regex(_transform_pattern);
// only run through replacement if there is a match for this entry
if (transformer.IsMatch(_currentEntry))
{
string newFilename = transformer.Replace(_currentEntry, _transform_text);
_command.WriteVerbose("Transform: " + _currentEntry + " to: " + newFilename);
_currentFileName = Path.Combine(_outputPath, newFilename);
}
else
{
_currentFileName = Path.Combine(_outputPath, _entries[index]);
}
}
else
{
_currentFileName = Path.Combine(_outputPath, _entries[index]);
}
string fileDir = Path.GetDirectoryName(_currentFileName);
if (!string.IsNullOrEmpty(fileDir))
{
Directory.CreateDirectory(fileDir);
}
_fileStream = new OutStreamWrapper(File.Create(_currentFileName));
outStream = _fileStream;
}
else
{
outStream = null;
}
}
catch (PipelineStoppedException)
{
throw;
}
catch (Exception ex)
{
_command.WriteWarning("ArchiveCallBack->GetStream error: " + ex.ToString());
outStream = null;
return(1); // S_FALSE
}
return(0); // S_OK
}