/// <summary>
/// Moves the current location within the stream to the specified location.
/// </summary>
/// <param name="offset">The offset relative to the seek origin.</param>
/// <param name="origin">The seek origin.</param>
/// <returns>The new position in the file.</returns>
public override long Seek(long offset, SeekOrigin origin)
{
long newPos = LateBoundStormDllApi.SFileSetFilePointer(m_hFile, offset, origin);
m_pos = newPos;
return(m_pos);
}
/// <summary>
/// Reads data from the underlying stream into the specified buffer.
/// </summary>
/// <param name="buffer">The buffer that will receive the data.</param>
/// <param name="offset">The starting location in the buffer to get the data.</param>
/// <param name="count">The amount of data to be read.</param>
/// <remarks>
/// <para>Rather than throwing an exception, if the buffer is too small to return the requested amount of
/// data, only as much data as the buffer can hold is returned.</para>
/// </remarks>
/// <returns>The number of bytes read.</returns>
public override int Read(byte[] buffer, int offset, int count)
{
checkDisposed();
if (buffer == null)
{
throw new ArgumentNullException("buffer", "The read buffer cannot be null.");
}
int maxLen = count - offset;
if (maxLen > buffer.Length)
{
maxLen = buffer.Length;
}
int bytesToCopy = (int)(Length - Position);
if (bytesToCopy > maxLen)
{
bytesToCopy = maxLen;
}
byte[] tmpBuffer = new byte[maxLen];
int amount = LateBoundStormDllApi.SFileReadFile(m_hFile, tmpBuffer, bytesToCopy);
Buffer.BlockCopy(tmpBuffer, 0, buffer, offset, amount);
m_pos += amount;
return(amount);
}
private MpqServices()
{
m_path = Path.GetTempFileName();
//Console.WriteLine(m_path);
FileStream fs = new FileStream(m_path, FileMode.Open, FileAccess.Write, FileShare.None);
byte[] storm_dll;
if (NativeMethods.Is64BitProcess)
{
storm_dll = Resources.StormLib64;
}
else
{
storm_dll = Resources.StormLib32;
}
fs.Write(storm_dll, 0, storm_dll.Length);
fs.Close();
m_hMod = NativeMethods.LoadLibrary(m_path);
if (m_hMod == IntPtr.Zero)
{
int win32err = Marshal.GetLastWin32Error();
File.Delete(m_path);
throw new Win32Exception(win32err);
}
LateBoundStormDllApi.Initialize(m_hMod);
m_archives = new List <MpqArchive>();
}
/// <summary>
/// Cleans up unmanaged resources used by this archive.
/// </summary>
/// <param name="disposing"><c>true</c> if the object is being disposed; <c>false</c> if it is being finalized.</param>
protected virtual void Dispose(bool disposing)
{
if (m_disposed)
{
return;
}
if (disposing)
{
foreach (MpqFileStream mfs in m_files)
{
mfs.Dispose();
}
m_files.Clear();
m_files = null;
}
if (m_hMPQ != IntPtr.Zero)
{
LateBoundStormDllApi.SFileCloseArchive(m_hMPQ);
}
m_disposed = true;
MpqServices.NotifyArchiveDisposed(this);
}
internal MpqFileStream(string internalPath, MpqArchive parent)
{
m_owner = parent;
IntPtr hFile = LateBoundStormDllApi.SFileOpenFileEx(parent.Handle, internalPath, SearchType.CurrentOnly);
m_path = internalPath;
m_hFile = hFile;
}
internal MpqArchive(string path)
{
m_files = new List <MpqFileStream>();
if (!File.Exists(path))
{
throw new FileNotFoundException(Resources.fileNotFound, path);
}
m_hMPQ = LateBoundStormDllApi.SFileOpenArchive(path, 1, 0);
}
/// <summary>
/// Cleans up unmanaged resources in use.
/// </summary>
/// <param name="disposing"><c>true</c> if the object is being disposed; <c>false</c> if it is being finalized.</param>
protected override void Dispose(bool disposing)
{
if (m_disposed)
{
return;
}
if (m_hFile != IntPtr.Zero)
{
LateBoundStormDllApi.SFileCloseFile(m_hFile);
m_hFile = IntPtr.Zero;
m_owner.FileIsDisposed(this);
m_owner = null;
m_path = null;
}
m_disposed = true;
}
/// <summary>
/// Determines whether the archive contains the specified file.
/// </summary>
/// <param name="fileName">The path to the file relative to the MPQ root.</param>
/// <returns><b>True</b> if the file is contained within the MPQ; otherwise <b>false</b>.</returns>
public bool ContainsFile(string fileName)
{
return(LateBoundStormDllApi.SFileHasFile(m_hMPQ, fileName));
}
