static void Unpack(PackerSettings settings)
{
Console.WriteLine("-- Unpack Files in " + settings.target + " --");
FileStream stream = new FileStream(settings.target, FileMode.Open);
BinaryReader r = new BinaryReader(stream);
DiskArchiveHeader header = new DiskArchiveHeader();
header.Read(r);
if (header.HasValidMagicValue() == false)
{
Console.WriteLine("Error: " + settings.target + " is not a P.A.C.K file");
return;
}
Console.WriteLine("Files: " + header.numFiles);
Console.WriteLine("Manifest position: " + header.fileListOffset);
string outputDir = "output\\" + Path.GetFileNameWithoutExtension(settings.target);
Console.WriteLine("Writing contents to " + outputDir);
Directory.CreateDirectory(outputDir);
r.BaseStream.Seek(header.fileListOffset, SeekOrigin.Begin);
for (int i = 0; i < header.numFiles; ++i)
{
DiskArchiveFile file = new DiskArchiveFile();
uint manifestReadPosition = file.Read(r);
r.BaseStream.Seek(file.offset, SeekOrigin.Begin);
byte[] bytes = r.ReadBytes((int)file.numBytes);
// remember seek back to manifest position
r.BaseStream.Seek(manifestReadPosition, SeekOrigin.Begin);
string fileName = outputDir + file.fileName.Trim('\0');
Console.WriteLine("Writing " + fileName + ": Size: " + bytes.Length);
// Make sure directory exists
Directory.CreateDirectory(Path.GetDirectoryName(fileName));
File.WriteAllBytes(fileName, bytes);
}
}
static void ListContents(PackerSettings settings)
{
Console.WriteLine("-- List Files in " + settings.target + " --");
FileStream stream = new FileStream(settings.target, FileMode.Open);
BinaryReader r = new BinaryReader(stream);
DiskArchiveHeader header = new DiskArchiveHeader();
header.Read(r);
if (header.HasValidMagicValue() == false)
{
Console.WriteLine("Error: " + settings.target + " is not a P.A.C.K file");
return;
}
Console.WriteLine("Files: " + header.numFiles);
Console.WriteLine("Manifest position: " + header.fileListOffset);
r.BaseStream.Seek(header.fileListOffset, SeekOrigin.Begin);
for (int i = 0; i < header.numFiles; ++i)
{
DiskArchiveFile file = new DiskArchiveFile();
file.Read(r);
Console.WriteLine(file.fileName + ": Size: " + file.numBytes + " offset: " + file.offset + " type: " + file.info[0]);
}
}
static void Pack(PackerSettings settings)
{
string outputFile = settings.target + ".dat";
List <string> list = new List <string>(100);
GetRecursiveFileList(settings.target, list);
if (list.Count == 0)
{
throw new Exception("No files found in directory '" + settings.target + "'");
}
int memSizeOfFileList = DiskArchiveFile.SIZE_IN_BYTES * list.Count;
Console.WriteLine("Size of file table: " + memSizeOfFileList + " bytes, or 64 * " + list.Count + " files");
//////////////////////////////////////////////////////////////////////
// Build manifest
// headers are stored in memory until write is finished, then appended to the end.
//////////////////////////////////////////////////////////////////////
List <DiskArchiveFile> fileHeaders = new List <DiskArchiveFile>(list.Count);
foreach (string path in list)
{
int properStart = path.IndexOf('\\');
string output;
if (properStart >= 0)
{
output = path.Remove(0, properStart);
}
else
{
output = path;
}
// validate filename
if (output.Length > MAX_ARCHIVE_FILE_NAME_SIZE)
{
throw new Exception("File path " + output + " is too long. Must be 51 chars or lower");
}
foreach (char c in output)
{
if (c > 255)
{
throw new Exception("File path " + output + " contains non-ascii characters");
}
}
DiskArchiveFile file = new DiskArchiveFile();
file.SetFileName(path);
file.numBytes = (uint)GetFileSize(path);
file.offset = 0;
fileHeaders.Add(file);
}
//////////////////////////////////////////////////////////////////////
// Write files
//////////////////////////////////////////////////////////////////////
// open streams
FileStream stream = new FileStream(outputFile, FileMode.Create);
BinaryWriter writer = new BinaryWriter(stream);
DiskArchiveHeader header = new DiskArchiveHeader();
header.numFiles = (uint)fileHeaders.Count;
writer.Seek(DiskArchiveHeader.SIZE_IN_BYTES, SeekOrigin.Begin);
Console.WriteLine("Writing files:");
// Build the actual file, updating the manifest
foreach (DiskArchiveFile file in fileHeaders)
{
Console.WriteLine("Writing " + file.fullFilePath + " at " + writer.BaseStream.Position);
file.offset = (uint)writer.BaseStream.Position;
file.numBytes = (uint)GetFileSize(file.fullFilePath);
writer.Write(File.ReadAllBytes(file.fullFilePath));
}
Console.WriteLine("Writing manifest:");
// Note the position of the file table in the header
header.fileListOffset = (uint)writer.BaseStream.Position;
// Write the manifest table
foreach (DiskArchiveFile file in fileHeaders)
{
file.Write(writer);
}
// Write header now that manifest is completed
writer.Seek(0, SeekOrigin.Begin);
header.Write(writer);
// cleanup
writer.Close();
stream.Close();
long outputSize = GetFileSize(outputFile);
string sizeStr;
if (outputSize >= (1024 * 1024))
{
sizeStr = (outputSize / (1024 * 1024)).ToString() + " MB (" + outputSize + " bytes)";
}
else if (outputSize > 1024)
{
sizeStr = (outputSize / 1024).ToString() + " KB (" + outputSize + " bytes)";
}
else
{
sizeStr = outputSize.ToString() + " B";
}
Console.Write("Wrote \"" + outputFile + "\": " + sizeStr);
}
