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Initial commit of original Tiberian Dawn and Red Alert source code converted to build as DLLs, and compatible with the release version of Command & Conquer Remastered.
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PG-SteveT 2020-05-27 12:16:20 -07:00
parent ea8ecc76fa
commit 03416d24e1
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//
// 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/XSTRAW.CPP 1 3/03/97 10:26a 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 : XSTRAW.CPP *
* *
* Programmer : Joe L. Bostic *
* *
* Start Date : 07/04/96 *
* *
* Last Update : July 4, 1996 [JLB] *
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* BufferStraw::Get -- Fetch data from the straw's buffer holding tank. *
* FileStraw::Get -- Fetch data from the file. *
* FileStraw::~FileStraw -- The destructor for the file straw. *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "FUNCTION.H"
#include "xstraw.h"
#include <stddef.h>
#include <string.h>
//---------------------------------------------------------------------------------------------------------
// BufferStraw
//---------------------------------------------------------------------------------------------------------
/***********************************************************************************************
* BufferStraw::Get -- Fetch data from the straw's buffer holding tank. *
* *
* This routine will copy the requested number of bytes from the buffer holding tank (as *
* set up by the straw's constructor) to the buffer specified. *
* *
* INPUT: source -- Pointer to the buffer to be filled with data. *
* *
* length -- The number of bytes requested. *
* *
* OUTPUT: Returns with the number of bytes copied to the buffer. If this is less than *
* requested, then it indicates that the data holding tank buffer is exhausted. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
int BufferStraw::Get(void * source, int slen)
{
int total = 0;
if (Is_Valid() && source != NULL && slen > 0) {
int len = slen;
if (BufferPtr.Get_Size() != 0) {
int theoretical_max = BufferPtr.Get_Size() - Index;
len = (slen < theoretical_max) ? slen : theoretical_max;
}
if (len > 0) {
memmove(source, ((char*)BufferPtr.Get_Buffer()) + Index, len);
}
Index += len;
// Length -= len;
// BufferPtr = ((char *)BufferPtr) + len;
total += len;
}
return(total);
}
//---------------------------------------------------------------------------------------------------------
// FileStraw
//---------------------------------------------------------------------------------------------------------
/***********************************************************************************************
* FileStraw::Get -- Fetch data from the file. *
* *
* This routine will read data from the file (as specified in the straw's constructor) into *
* the buffer indicated. *
* *
* INPUT: source -- Pointer to the buffer to hold the data. *
* *
* length -- The number of bytes requested. *
* *
* OUTPUT: Returns with the number of bytes stored into the buffer. If this number is less *
* than the number requested, then this indicates that the file is exhausted. *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
int FileStraw::Get(void * source, int slen)
{
if (Valid_File() && source != NULL && slen > 0) {
if (!File->Is_Open()) {
HasOpened = true;
if (!File->Is_Available()) return(0);
if (!File->Open(READ)) return(0);
}
return(File->Read(source, slen));
}
return(0);
}
/***********************************************************************************************
* FileStraw::~FileStraw -- The destructor for the file straw. *
* *
* This destructor only needs to close the file if it was the one to open it. *
* *
* INPUT: none *
* *
* OUTPUT: none *
* *
* WARNINGS: none *
* *
* HISTORY: *
* 07/03/1996 JLB : Created. *
*=============================================================================================*/
FileStraw::~FileStraw(void)
{
if (Valid_File() && HasOpened) {
File->Close();
HasOpened = false;
File = NULL;
}
}