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CnC_Renegade/Code/wwlib/rcfile.cpp

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/*
** Command & Conquer Renegade(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/>.
*/
/***********************************************************************************************
*** 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 : wwlib *
* *
* $Archive:: /Commando/Code/wwlib/rcfile.cpp $*
* *
* Author:: Greg Hjelstrom *
* *
* $Modtime:: 7/09/99 1:37p $*
* *
* $Revision:: 5 $*
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "rcfile.h"
#include <stdlib.h>
const char * RESOURCE_FILE_TYPE_NAME = "File";
ResourceFileClass::ResourceFileClass(HMODULE hmodule, char const *filename) :
ResourceName(NULL),
hModule(NULL),
FileBytes(NULL),
FilePtr(NULL),
EndOfFile(NULL)
{
Set_Name(filename);
HRSRC hresource = FindResource(hmodule,ResourceName,RESOURCE_FILE_TYPE_NAME);
if (hresource) {
HGLOBAL hglob = LoadResource(hmodule,hresource);
if (hglob) {
FileBytes = (unsigned char *)LockResource(hglob);
if (FileBytes) {
FilePtr = FileBytes;
EndOfFile = FileBytes + SizeofResource(hmodule,hresource);
}
}
}
}
ResourceFileClass::~ResourceFileClass(void)
{
if (ResourceName)
free(ResourceName);
}
char const * ResourceFileClass::Set_Name(char const *filename)
{
if (ResourceName) {
free(ResourceName);
ResourceName = NULL;
}
if (filename) {
ResourceName = strdup(filename);
}
return ResourceName;
}
int ResourceFileClass::Read(void *buffer, int size)
{
if (!FilePtr) return 0;
if (FilePtr + size > EndOfFile) {
size = EndOfFile - FilePtr;
}
memcpy(buffer,FilePtr,size);
FilePtr += size;
return size;
}
int ResourceFileClass::Seek(int pos, int dir)
{
switch (dir) {
case SEEK_SET:
FilePtr = FileBytes + pos;
break;
case SEEK_CUR:
FilePtr = FilePtr + pos;
break;
case SEEK_END:
FilePtr = EndOfFile + pos;
break;
}
if (FilePtr > EndOfFile) {
FilePtr = EndOfFile;
}
if (FilePtr < FileBytes) {
FilePtr = FileBytes;
}
return FilePtr - FileBytes;
}
int ResourceFileClass::Size(void)
{
return EndOfFile - FileBytes;
}
void ResourceFileClass::Error(int /*error*/, int /*canretry*/, char const * /*filename*/)
{
}