private bool IsValidFirstVolume(RarArchive archive) => archive.IsFirstVolume() && archive.IsComplete && archive.IsMultipartVolume();
protected override void UnpackImpl()
{
var firstFile = InputFilePaths.FirstOrDefault(); //*.rar or *.r01
if (firstFile == null)
{
return;
}
//Path.GetDirectoryName(firstFile) ;
var options = new ExtractionOptions()
{
ExtractFullPath = true, Overwrite = true
};
using (var archive = ArchiveFactory.Open(firstFile))
{
if (archive is RarArchive)
{
RarArchive rar = archive as RarArchive;
if (rar.IsMultipartVolume() && !rar.IsFirstVolume())
{
var path = rar.Volumes.FirstOrDefault();
CurrentProgressDescription = "Please Unpack from the 1st volume";
OnUnpackFinished(false);
return;
}
}
else //Zip or 7z
{
}
if (!archive.IsComplete)
{
CurrentProgressDescription = "Incomplete files: some files are missing.";
OnUnpackFinished(false);
return;
}
bytesUnpacked = 0;
archive.EntryExtractionBegin += OnEntryExtractionBegin;
archive.EntryExtractionEnd += OnEntryExtractionEnd;
archive.CompressedBytesRead += OnBytesRead;
bool bSingleChildFolderExists = CheckSingleSubFolderExists(archive);
if (bSingleChildFolderExists)
{
single_child_folder_to_unpack_to = Path.Combine(TargetExtractionFolder, single_child_folder_to_unpack_to);
}
bool bShouldExtractHere = bSingleChildFolderExists || archive.Entries.Count() == 1;
if (!bShouldExtractHere)
{
TargetExtractionFolder = Path.Combine(TargetExtractionFolder, Title);
}
foreach (var entry in archive.Entries)
{
if (!entry.IsDirectory)
{
entry.WriteToDirectory(TargetExtractionFolder, options);
}
}
}
}