153 lines
3.6 KiB
C++
153 lines
3.6 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2002 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/****************************************************************/
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/* FCE Ultra */
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/* */
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/* This file contains routines for reading/writing the */
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/* configuration file. */
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/* */
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/****************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../../types.h"
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#include "config.h"
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static int FReadString(FILE *fp, char *str, int n)
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{
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int x=0,z;
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for(;;)
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{
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z=fgetc(fp);
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str[x]=z;
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x++;
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if(z<=0) break;
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if(x>=n) return 0;
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}
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if(z<0) return 0;
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return 1;
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}
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static void GetValueR(FILE *fp, char *str, void *v, int c)
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{
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char buf[256];
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int s;
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while(FReadString(fp,buf,256))
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{
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fread(&s,1,4,fp);
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if(!strcmp(str, buf))
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{
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if(!c) // String, allocate some memory.
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{
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if(!(*(char **)v=(char*)malloc(s)))
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goto gogl;
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fread(*(char **)v,1,s,fp);
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continue;
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}
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else if(s>c || s<c)
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{
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gogl:
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fseek(fp,s,SEEK_CUR);
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continue;
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}
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fread((uint8*)v,1,c,fp);
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}
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else
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fseek(fp,s,SEEK_CUR);
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}
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fseek(fp,4,SEEK_SET);
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}
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static void SetValueR(FILE *fp, char *str, void *v, int c)
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{
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fwrite(str,1,strlen(str)+1,fp);
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fwrite((uint8*)&c,1,4,fp);
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fwrite((uint8*)v,1,c,fp);
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}
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static void SaveParse(CFGSTRUCT *cfgst, FILE *fp)
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{
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int x=0;
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while(cfgst[x].ptr)
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{
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if(!cfgst[x].name) // Link to new config structure
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{
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SaveParse((CFGSTRUCT*)cfgst[x].ptr,fp); // Recursion is sexy. I could
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// save a little stack space if I made
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// the file pointer a non-local
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// variable...
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x++;
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continue;
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}
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if(cfgst[x].len) // Plain data
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SetValueR(fp,cfgst[x].name,cfgst[x].ptr,cfgst[x].len);
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else // String
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if(*(char **)cfgst[x].ptr) // Only save it if there IS a string.
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SetValueR(fp,cfgst[x].name,*(char **)cfgst[x].ptr,
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strlen(*(char **)cfgst[x].ptr)+1);
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x++;
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}
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}
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void SaveFCEUConfig(char *filename, CFGSTRUCT *cfgst)
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{
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FILE *fp;
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fp=fopen(filename,"wb");
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if(fp==NULL) return;
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SaveParse(cfgst,fp);
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fclose(fp);
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}
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static void LoadParse(CFGSTRUCT *cfgst, FILE *fp)
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{
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int x=0;
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while(cfgst[x].ptr)
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{
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if(!cfgst[x].name) // Link to new config structure
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{
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LoadParse((CFGSTRUCT*)cfgst[x].ptr,fp);
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x++;
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continue;
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}
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GetValueR(fp,cfgst[x].name,cfgst[x].ptr,cfgst[x].len);
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x++;
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}
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}
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void LoadFCEUConfig(char *filename, CFGSTRUCT *cfgst)
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{
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FILE *fp;
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fp=fopen(filename,"rb");
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if(fp==NULL) return;
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LoadParse(cfgst,fp);
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fclose(fp);
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}
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