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Initial commit of Command & Conquer Red Alert source code.

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2025-02-27 16:15:05 +00:00
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/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program 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.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* $Header: /CounterStrike/STRAW.CPP 1 3/03/97 10:25a 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 : STRAW.CPP *
* *
* Programmer : Joe L. Bostic *
* *
* Start Date : 07/02/96 *
* *
* Last Update : July 3, 1996 [JLB] *
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* Straw::Get_From -- Connect one straw segment to another. *
* Straw::Get -- Fetch some data from the straw chain. *
* Straw::~Straw -- Destructor for a straw segment. *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "straw.h"
#include <stddef.h>
#include <string.h>
/***********************************************************************************************
* Straw::~Straw -- Destructor for a straw segment. *
* *
* This destructor will remove this segment from the straw chain. If there were any *
* connected segments to either side, they will be joined so that the straw chain will *
* still remain linked. *
* *
* INPUT: none *
* *
* OUTPUT: none *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
Straw::~Straw(void)
{
if (ChainTo != NULL) {
ChainTo->ChainFrom = ChainFrom;
}
if (ChainFrom != NULL) {
ChainFrom->Get_From(ChainTo);
}
ChainFrom = NULL;
ChainTo = NULL;
}
/***********************************************************************************************
* Straw::Get_From -- Connect one straw segment to another. *
* *
* Use this routine to connect straw segments together. The straw segment specified as the *
* parameter will be linked to the chain such that when data is requested, it will be *
* fetched from the specified link before being processed by this link. *
* *
* INPUT: straw -- Pointer to the straw segment that data will be fetched from. *
* *
* OUTPUT: none *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
void Straw::Get_From(Straw * straw)
{
if (ChainTo != straw) {
if (straw != NULL && straw->ChainFrom != NULL) {
straw->ChainFrom->Get_From(NULL);
straw->ChainFrom = NULL;
}
if (ChainTo != NULL) {
ChainTo->ChainFrom = NULL;
}
ChainTo = straw;
if (ChainTo != NULL) {
ChainTo->ChainFrom = this;
}
}
}
/***********************************************************************************************
* Straw::Get -- Fetch some data from the straw chain. *
* *
* Use this routine to fetch some data from the straw. It is presumed that this routine *
* will be overridden to provide some useful functionality. At this level, the straw chain *
* merely passes the request on to the next straw in the chain. *
* *
* INPUT: source -- Pointer to the buffer to hold the requested data. *
* *
* length -- The number of bytes requested. *
* *
* OUTPUT: Returns with the number of bytes stored into the buffer. If the number returned *
* is less than the number requested, then this indicates that the straw data has *
* been exhausted. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
int Straw::Get(void * source, int slen)
{
if (ChainTo != NULL) {
return(ChainTo->Get(source, slen));
}
return(0);
}