public IExtractor ExtractFile(ulong index, string outputDirectory)
{
if (index >= (ulong)_Files.LongLength)
{
throw new ArgumentOutOfRangeException($"Index `{index}` is out of range.");
}
SevenZipArchiveFile file = _Files[index];
if (!preProcessFile(outputDirectory, file))
{
string fullPath = Path.Combine(outputDirectory, PreserveDirectoryStructure ? file.Name : Path.GetFileName(file.Name));
// progress provider
SevenZipProgressProvider szpp = null;
if (ProgressDelegate != null)
{
szpp = new SevenZipProgressProvider(_Files, new[] { index }, ProgressDelegate);
}
// extraction
//Trace.TraceInformation($"Filename: `{file.Name}`, file size: `{file.Size} bytes`.");
var sx = new SevenZipStreamsExtractor(stream, header.RawHeader.MainStreamsInfo, Password);
using (Stream fileStream = File.Create(fullPath))
sx.Extract((ulong)file.UnPackIndex, fileStream, szpp);
if (file.Time != null)
{
File.SetLastWriteTimeUtc(fullPath, (DateTime)file.Time);
}
}
return(this);
}
public IExtractor ExtractFile(ulong index, Stream outputStream)
{
if (index >= (ulong)_Files.LongLength)
{
throw new ArgumentOutOfRangeException($"Index `{index}` is out of range.");
}
if (outputStream == null || !outputStream.CanWrite)
{
throw new ArgumentException($"Stream `{nameof(outputStream)}` is invalid or cannot be written to.");
}
SevenZipArchiveFile file = _Files[index];
if (file.IsEmpty)
{
//Trace.TraceWarning($"Filename: {file.Name} is a directory, empty file or anti file, nothing to output to stream.");
}
else
{
// progress provider
SevenZipProgressProvider szpp = null;
if (ProgressDelegate != null)
{
szpp = new SevenZipProgressProvider(_Files, new[] { index }, ProgressDelegate);
}
// extraction
//Trace.TraceInformation($"Filename: `{file.Name}`, file size: `{file.Size} bytes`.");
//Trace.TraceInformation("Extracting...");
var sx = new SevenZipStreamsExtractor(stream, header.RawHeader.MainStreamsInfo, Password);
sx.Extract((ulong)file.UnPackIndex, outputStream, szpp);
}
return(this);
}
public IExtractor ExtractFiles(ulong[] indices, Func <ArchiveFile, Stream> onStreamRequest, Action <ArchiveFile, Stream> onStreamClose = null)
{
if (indices.Any(index => index >= (ulong)_Files.LongLength))
{
throw new ArgumentOutOfRangeException("An index given in `indices[]` array is out of range.");
}
// preprocess files and keep track of streams to decompress
var streamToFileIndex = new Dictionary <ulong, ulong>();
var streamIndices = new List <ulong>();
ulong streamIndex = 0;
for (ulong i = 0; i < (ulong)_Files.LongLength; ++i)
{
if (!indices.Any() || Array.IndexOf(indices, i) != -1)
{
if (_Files[i].IsEmpty)
{
using (Stream s = onStreamRequest(_Files[i]))
if (s != null)
{
onStreamClose?.Invoke(_Files[i], s);
}
}
else if (indices.Any())
{
streamIndices.Add(streamIndex);
}
}
if (!_Files[i].IsEmpty)
{
streamToFileIndex[streamIndex++] = i;
}
}
// no file to decompress
if (!streamToFileIndex.Any())
{
//Trace.TraceWarning("ExtractFiles: No decoding required.");
return(this);
}
// progress provider
SevenZipProgressProvider szpp = null;
if (ProgressDelegate != null)
{
szpp = new SevenZipProgressProvider(_Files, indices, ProgressDelegate);
}
// extraction
//Trace.TraceInformation("Extracting...");
var sx = new SevenZipStreamsExtractor(stream, header.RawHeader.MainStreamsInfo, Password);
sx.ExtractMultiple(
streamIndices.ToArray(),
(ulong index) => onStreamRequest(_Files[streamToFileIndex[index]]),
(ulong index, Stream stream) => onStreamClose?.Invoke(_Files[streamToFileIndex[index]], stream),
szpp);
return(this);
}
public IExtractor ExtractFiles(ulong[] indices, string outputDirectory)
{
if (indices.Any(index => index >= (ulong)_Files.LongLength))
{
throw new ArgumentOutOfRangeException("An index given in `indices[]` array is out of range.");
}
// preprocess files and keep track of streams to decompress
var streamToFileIndex = new Dictionary <ulong, ulong>();
var streamIndices = new List <ulong>();
ulong streamIndex = 0;
for (ulong i = 0; i < (ulong)_Files.LongLength; ++i)
{
if (!indices.Any() || Array.IndexOf(indices, i) != -1)
{
if (!preProcessFile(outputDirectory, _Files[i]))
{
streamIndices.Add(streamIndex);
}
}
if (!_Files[i].IsEmpty)
{
streamToFileIndex[streamIndex++] = i;
}
}
// no file to decompress
if (!streamIndices.Any())
{
//Trace.TraceWarning("ExtractFiles: No decoding required.");
return(this);
}
// progress provider
SevenZipProgressProvider szpp = null;
if (ProgressDelegate != null)
{
szpp = new SevenZipProgressProvider(_Files, indices, ProgressDelegate);
}
// extraction
//Trace.TraceInformation("Extracting...");
var sx = new SevenZipStreamsExtractor(stream, header.RawHeader.MainStreamsInfo, Password);
sx.ExtractMultiple(
streamIndices.ToArray(),
(ulong index) => {
SevenZipArchiveFile file = _Files[streamToFileIndex[index]];
string fullPath = Path.Combine(outputDirectory, PreserveDirectoryStructure ? file.Name : Path.GetFileName(file.Name));
//Trace.TraceInformation($"File index {index}, filename: {file.Name}, file size: {file.Size}");
return(new FileStream(fullPath,
FileMode.Create,
FileAccess.Write,
FileShare.None,
bufferSize));
},
(ulong index, Stream stream) => {
stream.Close();
SevenZipArchiveFile file = _Files[streamToFileIndex[index]];
string fullPath = Path.Combine(outputDirectory, PreserveDirectoryStructure ? file.Name : Path.GetFileName(file.Name));
if (file.Time != null)
{
File.SetLastWriteTimeUtc(fullPath, (DateTime)file.Time);
}
},
szpp);
return(this);
}
