fileops.cpp

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/*
**  Command & Conquer Generals Zero Hour(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/>.
*/
 
//
// fileops.cpp
//
 
#include "stdAfx.h"
#include "fileops.h"
 
 
 
 
int                         FileExists ( const char *filename )
{
    int fa = FileAttribs ( filename );
 
    return ! ( (fa == FA_NOFILE) || (fa & FA_DIRECTORY ));
}
 
 
int                         FileAttribs ( const char *filename )
{
    WIN32_FIND_DATA     fi;
    HANDLE handle;
    int fa = FA_NOFILE;
 
    handle = FindFirstFile ( filename, &fi );
 
    if ( handle != INVALID_HANDLE_VALUE )
    {
        if ( fi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
        {
            fa |= FA_DIRECTORY;
        }
        if ( fi.dwFileAttributes & FILE_ATTRIBUTE_READONLY )
        {
            fa |= FA_READONLY;
        }
        else
        {
            fa |= FA_WRITEABLE;
        }
 
        FindClose ( handle );
    }
 
    return fa;
}
 
static void make_bk_name ( char *bkname, const char *filename )
{
    char *ext, *ext1;
 
    strcpy ( bkname, filename );
    
    ext = strchr ( filename, '.' );
    ext1 = strchr ( bkname, '.' );
 
    if ( ext )
    {
        strcpy ( ext1, "_back_up" );
        strcat ( ext1, ext );
    }
    else
    {
        strcat ( bkname, "_back_up" );
    }
 
}
 
void    MakeBackupFile ( const char *filename )
{
    char bkname[256];
    
    make_bk_name ( bkname, filename );
 
    CopyFile ( filename, bkname, FALSE );
 
}
 
void    RestoreBackupFile ( const char *filename )
{
    char bkname[256];
    
    make_bk_name ( bkname, filename );
 
    if ( FileExists ( bkname ))
    {
        CopyFile ( bkname, filename, FALSE );
    }
 
}