/// Extracts an BZip2 file contained in fileEntry.
/// </summary>
/// <param name="fileEntry"> FileEntry to extract </param>
/// <returns> Extracted files </returns>
public IEnumerable <FileEntry> Extract(FileEntry fileEntry, ExtractorOptions options, ResourceGovernor governor)
{
BZip2Stream?bzip2Stream = null;
try
{
bzip2Stream = new BZip2Stream(fileEntry.Content, SharpCompress.Compressors.CompressionMode.Decompress, false);
governor.CheckResourceGovernor(bzip2Stream.Length);
}
catch (Exception e)
{
Logger.Debug(Extractor.DEBUG_STRING, ArchiveFileType.BZIP2, fileEntry.FullPath, string.Empty, e.GetType());
}
if (bzip2Stream != null)
{
var newFilename = Path.GetFileNameWithoutExtension(fileEntry.Name);
var entryStream = bzip2Stream.Length > options.MemoryStreamCutoff ?
new FileStream(Path.GetTempFileName(), FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite, 4096, FileOptions.DeleteOnClose) :
(Stream) new MemoryStream((int)bzip2Stream.Length);
var newFileEntry = new FileEntry(newFilename, bzip2Stream, fileEntry);
if (Extractor.IsQuine(newFileEntry))
{
Logger.Info(Extractor.IS_QUINE_STRING, fileEntry.Name, fileEntry.FullPath);
bzip2Stream.Dispose();
throw new OverflowException();
}
foreach (var extractedFile in Context.Extract(newFileEntry, options, governor))
{
yield return(extractedFile);
}
bzip2Stream.Dispose();
}
else
{
if (options.ExtractSelfOnFail)
{
yield return(fileEntry);
}
}
}
/// <summary>
/// Extracts an BZip2 file contained in fileEntry.
/// </summary>
/// <param name="fileEntry"> FileEntry to extract </param>
/// <returns> Extracted files </returns>
public async IAsyncEnumerable <FileEntry> ExtractAsync(FileEntry fileEntry, ExtractorOptions options, ResourceGovernor governor)
{
BZip2Stream?bzip2Stream = null;
try
{
bzip2Stream = new BZip2Stream(fileEntry.Content, SharpCompress.Compressors.CompressionMode.Decompress, false);
governor.CheckResourceGovernor(bzip2Stream.Length);
}
catch (Exception e)
{
Logger.Debug(Extractor.DEBUG_STRING, ArchiveFileType.BZIP2, fileEntry.FullPath, string.Empty, e.GetType());
}
if (bzip2Stream != null)
{
var newFilename = Path.GetFileNameWithoutExtension(fileEntry.Name);
var newFileEntry = await FileEntry.FromStreamAsync(newFilename, bzip2Stream, fileEntry);
if (Extractor.IsQuine(newFileEntry))
{
Logger.Info(Extractor.IS_QUINE_STRING, fileEntry.Name, fileEntry.FullPath);
bzip2Stream.Dispose();
throw new OverflowException();
}
await foreach (var extractedFile in Context.ExtractAsync(newFileEntry, options, governor))
{
yield return(extractedFile);
}
bzip2Stream.Dispose();
}
else
{
if (options.ExtractSelfOnFail)
{
yield return(fileEntry);
}
}
}
public static string DecompressString(byte[] byteArray)
{
MemoryStream ms = new MemoryStream(byteArray);
BZip2Stream gzip = new BZip2Stream(ms, SharpCompress.Compressor.CompressionMode.Decompress, true);
byte[] buffer = StreamToByteArray(gzip);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < buffer.Length; i++)
{
sb.Append((char)buffer[i]);
}
gzip.Flush();
gzip.Dispose();
ms.Dispose();
return(sb.ToString());
}
