CnC_Remastered_Collection/REDALERT/CRCPIPE.CPP

88 lines
6.2 KiB
C++

//
// Copyright 2020 Electronic Arts Inc.
//
// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
// software: you can redistribute it and/or modify it under the terms of
// the GNU General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
// in the hope that it will be useful, but with permitted additional restrictions
// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
// distributed with this program. You should have received a copy of the
// GNU General Public License along with permitted additional restrictions
// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
/* $Header: /CounterStrike/CRCPIPE.CPP 1 3/03/97 10:24a Joe_bostic $ */
/***********************************************************************************************
*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
***********************************************************************************************
* *
* Project Name : Command & Conquer *
* *
* File Name : CRCPIPE.CPP *
* *
* Programmer : Joe L. Bostic *
* *
* Start Date : 06/30/96 *
* *
* Last Update : July 3, 1996 [JLB] *
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* CRCPipe::Result -- Fetches the current CRC of the data. *
* CRCPipe::Put -- Retrieves the data bytes specified and calculates CRC on it. *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "crcpipe.h"
/***********************************************************************************************
* CRCPipe::Put -- Retrieves the data bytes specified and calculates CRC on it. *
* *
* This routine will fetch the number of bytes requested from the straw. The data is *
* not modified by this straw segment, but it is examined by the CRC engine in order to *
* keep an accurate CRC of the data that passes through this routine. *
* *
* INPUT: source -- Pointer to the buffer that will hold the data requested. *
* *
* length -- The number of bytes requested. *
* *
* OUTPUT: Returns with the actual number of bytes stored into the buffer. If this number is *
* less than the number requested, then this indicates that the data stream has been *
* exhausted. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
int CRCPipe::Put(void const * source, int slen)
{
CRC(source, slen);
return(Pipe::Put(source, slen));
}
/***********************************************************************************************
* CRCPipe::Result -- Fetches the current CRC of the data. *
* *
* This routine will return the CRC of the data that has passed through the pipe up to *
* this time. *
* *
* INPUT: none *
* *
* OUTPUT: Returns with the CRC value. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
long CRCPipe::Result(void) const
{
return(CRC());
}