public UnzipReadStream(UnzipArchive archive, CompressionOption compressionLevel)
{
Archive = archive;
Archive.FileActive = true;
CompressionLevel = compressionLevel;
length = NativeUnzip.CurrentFileLength(Archive.Handle);
}
static void GoToFirstFile(UnzipHandle handle)
{
if (NativeUnzip.unzGoToFirstFile(handle) != 0)
{
throw new Exception("Zip file is invalid");
}
}
public Stream GetStream(string name)
{
foreach (string file in Files)
{
if (name.Equals(file, StringComparison.OrdinalIgnoreCase))
{
System.IO.Packaging.CompressionOption option;
NativeUnzip.OpenFile(Handle, name, out option);
return(new UnzipReadStream(this, option));
}
}
throw new Exception("The file doesn't exist in the zip archive");
}
private static string[] GetFiles(UnzipHandle handle, Func <UnzipHandle, string> getCurrentFileName)
{
GoToFirstFile(handle);
var files = new List <string> ();
string name;
while ((name = getCurrentFileName(handle)) != null)
{
files.Add(name);
if (!NativeUnzip.GoToNextFile(handle))
{
break;
}
}
return(files.ToArray());
}
public static string[] GetFiles(UnzipHandle handle)
{
List <string> files = new List <string> ();
GoToFirstFile(handle);
string name;
while ((name = GetCurrentFileName(handle)) != null)
{
files.Add(name);
if (!NativeUnzip.GoToNextFile(handle))
{
break;
}
}
return(files.ToArray());
}
public override int Read(byte[] buffer, int offset, int count)
{
return(NativeUnzip.Read(Archive.Handle, buffer, offset, count));
}
public override void Close()
{
Archive.FileActive = false;
NativeUnzip.CloseCurrentFile(Archive.Handle);
}
public void Dispose()
{
NativeUnzip.CloseArchive(Handle);
Stream.Close();
}
public UnzipArchive(Stream stream, bool ownsStream)
{
Stream = new ZipStream(stream, ownsStream);
Handle = NativeUnzip.OpenArchive(Stream.IOFunctions);
}
public UnzipArchive(Stream stream, bool ownsStream)
{
Stream = new ZipStream(stream, ownsStream);
Handle = NativeVersion.Use32Bit ? NativeUnzip.OpenArchive32(Stream.IOFunctions32) : NativeUnzip.OpenArchive64(Stream.IOFunctions64);
}
protected override bool ReleaseHandle()
{
NativeUnzip.CloseArchive(this);
return(true);
}
