public Stream CreateReadStream()
{
FileStream fs = null;
try
{
fs = File.OpenRead(fpkPath);
fs.Seek(offset, SeekOrigin.Begin);
fpkSubfileFormat format = fpkSubfileFormat.GetFormat(fs, size);
return(format.ReadStream(fs));
}
catch (Exception e)
{
if (fs != null)
{
fs.Close();
}
throw e;
}
}
void writeArchiveWorker_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = (BackgroundWorker)sender;
string backup = null;
string dirName = Path.GetDirectoryName(destPath);
if (dirName == String.Empty)
{
dirName = @".\";
}
DirectoryInfo dir = new DirectoryInfo(dirName);
if (!dir.Exists)
{
dir.Create();
}
if (File.Exists(destPath))
{
backup = Utility.GetDestFile(dir, Path.GetFileNameWithoutExtension(destPath) + ".bak", Path.GetExtension(destPath));
File.Move(destPath, backup);
if (destPath.Equals(this.FilePath, StringComparison.InvariantCultureIgnoreCase))
{
for (int i = 0; i < Subfiles.Count; i++)
{
fpkSubfile subfile = Subfiles[i] as fpkSubfile;
if ((subfile != null) && subfile.fpkPath.Equals(this.FilePath, StringComparison.InvariantCultureIgnoreCase))
{
subfile.fpkPath = backup;
}
}
}
}
try
{
using (BinaryWriter writer = new BinaryWriter(File.Create(destPath)))
{
this.DirFormat.WriteHeader(writer.BaseStream, this.Subfiles);
int offset = (int)writer.BaseStream.Position;
int[] sizes = new int[Subfiles.Count];
int[] CRCs = new int[Subfiles.Count];
for (int i = 0; i < Subfiles.Count; i++)
{
if (worker.CancellationPending)
{
e.Cancel = true;
break;
}
worker.ReportProgress(i * 100 / Subfiles.Count);
fpkSubfile subfile = Subfiles[i] as fpkSubfile;
if (subfile != null)
{
using (BinaryReader reader = new BinaryReader(File.OpenRead(subfile.fpkPath)))
{
reader.BaseStream.Seek(subfile.offset, SeekOrigin.Begin);
uint readSteps = subfile.size / Utility.BufSize;
for (int j = 0; j < readSteps; j++)
{
writer.Write(reader.ReadBytes(Utility.BufSize));
}
writer.Write(reader.ReadBytes(subfile.size % Utility.BufSize));
}
CRCs[i] = this.DirFormat is fpkDirFormat_Style2 && subfile.crc == 0 ?
fpkDirFormat_Style2.Hash(Utility.EncodingShiftJIS.GetBytes(Subfiles[i].Name)) : subfile.crc;
}
else
{
fpkSubfileFormat format = compress ? (fpkSubfileFormat) new fpkSubfileFormat_ZLC2() : (fpkSubfileFormat) new fpkSubfileFormat_Uncompressed();
Stream stream = format.WriteStream(writer.BaseStream);
Subfiles[i].WriteTo(stream);
format.FinishWriteTo(stream);
CRCs[i] = this.DirFormat is fpkDirFormat_Style2?
fpkDirFormat_Style2.Hash(Utility.EncodingShiftJIS.GetBytes(Subfiles[i].Name)) : 0;
}
int pos = (int)writer.BaseStream.Position;
sizes[i] = pos - offset;
offset = pos;
}
if (!e.Cancel)
{
this.DirFormat.WriteFooter(writer.BaseStream, this.Subfiles, sizes, CRCs);
}
}
if (e.Cancel)
{
RestoreBackup(destPath, backup);
}
else
{
this.FilePath = destPath;
if ((backup != null) && !keepBackup)
{
File.Delete(backup);
}
}
}
catch (Exception ex)
{
RestoreBackup(destPath, backup);
Utility.ReportException(ex);
}
}