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general.c

/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2002 Xodnizel
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include "types.h"
#include "fceu.h"

#include "general.h"
#include "state.h"
#include "movie.h"

#include "driver.h"

#include "md5.h"

static char BaseDirectory[2048];
static char FileBase[2048];
static char FileExt[2048];    /* Includes the . character, as in ".nes" */

static char FileBaseDirectory[2048];

void FCEUI_SetBaseDirectory(char *dir)
{
 strncpy(BaseDirectory,dir,2047);
 BaseDirectory[2047]=0;
}

static char *odirs[FCEUIOD__COUNT]={0,0,0,0,0,0};     // odirs, odors. ^_^

void FCEUI_SetDirOverride(int which, char *n)
{
 odirs[which]=n;

 if(FCEUGameInfo)  /* Rebuild cache of present states/movies. */
 {
  if(which==FCEUIOD_STATE)
   FCEUSS_CheckStates();
  else if(which == FCEUIOD_MOVIE)
   FCEUMOV_CheckMovies();
 }
}

#ifndef HAVE_ASPRINTF
static int asprintf(char **strp, const char *fmt, ...)
{
 va_list ap;
 int ret;

 va_start(ap,fmt);
 if(!(*strp=malloc(2048)))
  return(0);
 ret=vsnprintf(*strp,2048,fmt,ap);
 va_end(ap);
 return(ret);
}
#endif

char *FCEU_MakeFName(int type, int id1, char *cd1)
{
 char *ret=0;
 struct stat tmpstat;

 switch(type)
 {
  case FCEUMKF_NPTEMP: asprintf(&ret,"%s"PSS"m590plqd94fo.tmp",BaseDirectory);break;
  case FCEUMKF_MOVIE:if(odirs[FCEUIOD_STATE])
                      asprintf(&ret,"%s"PSS"%s.%d.fcm",odirs[FCEUIOD_STATE],FileBase,id1);
                     else
                      asprintf(&ret,"%s"PSS"fcs"PSS"%s.%d.fcm",BaseDirectory,FileBase,id1);
                     if(stat(ret,&tmpstat)==-1)
                     {  
                      if(odirs[FCEUIOD_STATE])
                       asprintf(&ret,"%s"PSS"%s.%s.%d.fcm",odirs[FCEUIOD_STATE],FileBase,md5_asciistr(FCEUGameInfo->MD5),id1);
                      else
                       asprintf(&ret,"%s"PSS"fcs"PSS"%s.%s.%d.fcm",BaseDirectory,FileBase,md5_asciistr(FCEUGameInfo->MD5),id1);
                     }
                 break;
  case FCEUMKF_STATE:if(odirs[FCEUIOD_STATE])
                      asprintf(&ret,"%s"PSS"%s.fc%d",odirs[FCEUIOD_STATE],FileBase,id1);
                     else
                      asprintf(&ret,"%s"PSS"fcs"PSS"%s.fc%d",BaseDirectory,FileBase,id1);
                 if(stat(ret,&tmpstat)==-1)
                 {
                  if(odirs[FCEUIOD_STATE])                                  
                       asprintf(&ret,"%s"PSS"%s.%s.fc%d",odirs[FCEUIOD_STATE],FileBase,md5_asciistr(FCEUGameInfo->MD5),id1);
                      else
                       asprintf(&ret,"%s"PSS"fcs"PSS"%s.%s.fc%d",BaseDirectory,FileBase,md5_asciistr(FCEUGameInfo->MD5),id1);
                 }
                     break;
  case FCEUMKF_SNAP:
                if(FSettings.SnapName)
                {
                     if(odirs[FCEUIOD_SNAPS])
                      asprintf(&ret,"%s"PSS"%s-%d.%s",odirs[FCEUIOD_SNAPS],FileBase,id1,cd1);
                     else
                      asprintf(&ret,"%s"PSS"snaps"PSS"%s-%d.%s",BaseDirectory,FileBase,id1,cd1);
                }
                else
                {
                 if(odirs[FCEUIOD_SNAPS])
                      asprintf(&ret,"%s"PSS"%d.%s",odirs[FCEUIOD_SNAPS],id1,cd1);
                     else
                      asprintf(&ret,"%s"PSS"snaps"PSS"%d.%s",BaseDirectory,id1,cd1);
                }
                    break;
  case FCEUMKF_FDS:if(odirs[FCEUIOD_NV])
                asprintf(&ret,"%s"PSS"%s.%s.fds",odirs[FCEUIOD_NV],FileBase,md5_asciistr(FCEUGameInfo->MD5));
               else
                asprintf(&ret,"%s"PSS"sav"PSS"%s.%s.fds",BaseDirectory,FileBase,md5_asciistr(FCEUGameInfo->MD5));
               break;
  case FCEUMKF_SAV:if(odirs[FCEUIOD_NV])
                    asprintf(&ret,"%s"PSS"%s.%s",odirs[FCEUIOD_NV],FileBase,cd1);
                 else
                    asprintf(&ret,"%s"PSS"sav"PSS"%s.%s",BaseDirectory,FileBase,cd1);
                   if(stat(ret,&tmpstat)==-1)
                   {     
                    if(odirs[FCEUIOD_NV])
                     asprintf(&ret,"%s"PSS"%s.%s.%s",odirs[FCEUIOD_NV],FileBase,md5_asciistr(FCEUGameInfo->MD5),cd1);
                    else
                     asprintf(&ret,"%s"PSS"sav"PSS"%s.%s.%s",BaseDirectory,FileBase,md5_asciistr(FCEUGameInfo->MD5),cd1);
                   }
                   break;
  case FCEUMKF_CHEAT:
                     if(odirs[FCEUIOD_CHEATS])
                      asprintf(&ret,"%s"PSS"%s.cht",odirs[FCEUIOD_CHEATS],FileBase);
                     else
                      asprintf(&ret,"%s"PSS"cheats"PSS"%s.cht",BaseDirectory,FileBase);
                     break;
  case FCEUMKF_IPS:  asprintf(&ret,"%s"PSS"%s%s.ips",FileBaseDirectory,FileBase,FileExt);
                     break;
  case FCEUMKF_GGROM:asprintf(&ret,"%s"PSS"gg.rom",BaseDirectory);break;
  case FCEUMKF_FDSROM:asprintf(&ret,"%s"PSS"disksys.rom",BaseDirectory);break;
  case FCEUMKF_PALETTE:
                       if(odirs[FCEUIOD_MISC])
                        asprintf(&ret,"%s"PSS"%s.pal",odirs[FCEUIOD_MISC],FileBase);
                       else
                        asprintf(&ret,"%s"PSS"gameinfo"PSS"%s.pal",BaseDirectory,FileBase);
                       break;
 }
 return(ret);
}

void GetFileBase(const char *f)
{
        const char *tp1,*tp3;

 #if PSS_STYLE==4
     tp1=((char *)strrchr(f,':'));
 #elif PSS_STYLE==1
     tp1=((char *)strrchr(f,'/'));
 #else
     tp1=((char *)strrchr(f,'\\'));
  #if PSS_STYLE!=3
     tp3=((char *)strrchr(f,'/'));
     if(tp1<tp3) tp1=tp3;
  #endif
 #endif
     if(!tp1)
     {
      tp1=f;
      strcpy(FileBaseDirectory,".");
     }
     else
     {
      memcpy(FileBaseDirectory,f,tp1-f);
      FileBaseDirectory[tp1-f]=0;
      tp1++;
     }

     if(((tp3=strrchr(f,'.'))!=NULL) && (tp3>tp1))
     {
      memcpy(FileBase,tp1,tp3-tp1);
      FileBase[tp3-tp1]=0;
      strcpy(FileExt,tp3);
     }
     else
     {
      strcpy(FileBase,tp1);
      FileExt[0]=0;
     }
}

uint32 uppow2(uint32 n)
{
 int x;

 for(x=31;x>=0;x--)
  if(n&(1<<x))
  {
   if((1<<x)!=n)
    return(1<<(x+1));
   break;
  }
 return n;
}


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