public void Extract(ref Dictionary <string, FileStream> streamCache, string destinationFolder, bool extractAsRaw)
{
string destinationFile = Path.Combine(Path.Combine(destinationFolder, this.ParentDirectoryName), this.FileName);
if (!streamCache.ContainsKey(this.SourceFilePath))
{
streamCache[this.SourceFilePath] = File.OpenRead(this.SourceFilePath);
}
//-----------------------------------------------------------
// ExeFS
//-----------------------------------------------------------
if (this.FileSystem == Nintendo3dsCtr.FileSystemType.ExeFS)
{
// write file while calculating hash
HashAlgorithm cryptoHash = SHA256.Create();
byte[] outputHash = ParseFile.ExtractChunkToFile64ReturningHash(streamCache[this.SourceFilePath], (ulong)this.Offset, (ulong)this.Size,
destinationFile, cryptoHash, false, false);
if (!ParseFile.CompareSegment(outputHash, 0, this.Sha256Hash))
{
// @TODO: only show error once per file
//if (!sha1ErrorDisplayed)
{
MessageBox.Show(String.Format("Warning: '{0},' failed SHA256 verification in ExeFS at offset 0x{1} during extraction.{2}",
Path.GetFileName(destinationFile), this.Offset, Environment.NewLine), "Warning - SHA256 Failure");
}
}
}
//---------------
// RomFS
//---------------
else
{
// @TODO: Modify to verify on extraction
ParseFile.ExtractChunkToFile64(streamCache[this.SourceFilePath], (ulong)this.Offset,
(ulong)this.Size, destinationFile, false, false);
}
}
