/// <summary>
/// Reads bytes from a file.
/// </summary>
/// <param name="hf">The file handle from which to read.</param>
/// <param name="buffer">The buffer where read bytes are placed.</param>
/// <param name="cb">Size of the read buffer.</param>
/// <param name="err">Error return value.</param>
/// <param name="pUserData">User data object.</param>
/// <returns>Returns the number of bytes read.</returns>
/// <remarks>The File Compression Interface (FCI) calls this function to read from a file.</remarks>
protected virtual int FileRead(IntPtr hf, byte[] buffer, int cb,
ref int err, IntPtr pUserData)
{
Trace.WriteLine(string.Format("FileRead {0}", hf));
int bytesRead = CabIO.FileRead(hf, buffer, cb, ref err, ((GCHandle)pUserData).Target);
Trace.WriteLine(string.Format("Returning {0}", bytesRead));
return(bytesRead);
}
/// <summary>
/// Reads bytes from a file.
/// </summary>
/// <param name="hf">The file handle from which to read.</param>
/// <param name="buffer">The buffer where read bytes are placed.</param>
/// <param name="cb">Size of the read buffer.</param>
/// <returns>Returns the number of bytes read.</returns>
/// <remarks>The File Decompression Interface (FDI) calls this function to read from a file.</remarks>
protected virtual int FileRead(IntPtr hf, byte[] buffer, int cb)
{
Trace.WriteLine(string.Format("FileRead {0}", hf));
int err = 0;
try
{
return(CabIO.FileRead(hf, buffer, cb, ref err, userData));
}
finally
{
erf.ErrorType = err;
}
}
