Fossil

  if(zFilename[0]=='-' && zFilename[1]==0){
    return stdout;
  }else{
    FILE * p;
    file_mkfolder(zFilename, ExtFILE, 1, 0);
    p = fossil_fopen(zFilename, "wb");
    if( p==0 ){
#if defined(_WIN32)
      const char *zReserved = file_is_win_reserved(zFilename);
      if( zReserved ){
        fossil_fatal("cannot open \"%s\" because \"%s\" is "
                     "a reserved name on Windows", zFilename,
                     zReserved);
      }
#endif