示例#1
0
static int
write_snapshot( libspectrum_snap *snap, const char *filename )
{
  unsigned char *buffer = NULL; size_t length = 0;
  int error, flags;
  libspectrum_id_t type;
  libspectrum_class_t class;

  error = libspectrum_identify_file_with_class( &type, &class, filename, NULL,
						0 );
  if( error ) return error;

  if( class != LIBSPECTRUM_CLASS_SNAPSHOT || type == LIBSPECTRUM_ID_UNKNOWN )
    type = LIBSPECTRUM_ID_SNAPSHOT_SZX;

  error = libspectrum_snap_write( &buffer, &length, &flags, snap, type,
				  creator, 0 );
  if( error ) return error;

  error = write_file( buffer, length, filename );
  if( error ) { free( buffer ); return error; }

  free( buffer );

  return 0;
}
示例#2
0
int snapshot_write( const char *filename )
{
  libspectrum_id_t type;
  libspectrum_class_t class;
  libspectrum_snap *snap;
  unsigned char *buffer; size_t length;
  int flags;

  int error;

  /* Work out what sort of file we want from the filename; default to
     .szx if we couldn't guess */
  error = libspectrum_identify_file_with_class( &type, &class, filename, NULL,
						0 );
  if( error ) return error;

  if( class != LIBSPECTRUM_CLASS_SNAPSHOT || type == LIBSPECTRUM_ID_UNKNOWN )
    type = LIBSPECTRUM_ID_SNAPSHOT_SZX;

  snap = libspectrum_snap_alloc();

  error = snapshot_copy_to( snap );
  if( error ) { libspectrum_snap_free( snap ); return error; }

  flags = 0;
  length = 0;
  buffer = NULL;
  error = libspectrum_snap_write( &buffer, &length, &flags, snap, type,
				  fuse_creator, 0 );
  if( error ) { libspectrum_snap_free( snap ); return error; }

  if( flags & LIBSPECTRUM_FLAG_SNAPSHOT_MAJOR_INFO_LOSS ) {
    ui_error(
      UI_ERROR_WARNING,
      "A large amount of information has been lost in conversion; the snapshot probably won't work"
    );
  } else if( flags & LIBSPECTRUM_FLAG_SNAPSHOT_MINOR_INFO_LOSS ) {
    ui_error(
      UI_ERROR_WARNING,
      "Some information has been lost in conversion; the snapshot may not work"
    );
  }

  error = libspectrum_snap_free( snap );
  if( error ) { libspectrum_free( buffer ); return 1; }

  error = utils_write_file( filename, buffer, length );
  if( error ) { libspectrum_free( buffer ); return error; }

  libspectrum_free( buffer );

  return 0;

}
示例#3
0
文件: rzx.c 项目: CiaranG/ZXdroid
static libspectrum_error
rzx_write_snapshot( libspectrum_byte **buffer, libspectrum_byte **ptr,
		    size_t *length, libspectrum_snap *snap,
		    libspectrum_id_t snap_format,
		    libspectrum_creator *creator, int compress )
{
  libspectrum_error error;
  libspectrum_byte *snap_buffer = NULL; size_t snap_length;
  libspectrum_byte *gzsnap = NULL; size_t gzlength = 0;
  int flags, done;
  snapshot_string_t *type;

  snap_length = 0;

  if( snap_format == LIBSPECTRUM_ID_UNKNOWN ) {
    /* If not given a snap format, try using .z80. If that would result
       in major information loss, use .szx instead */
    snap_format = LIBSPECTRUM_ID_SNAPSHOT_Z80;
    error = libspectrum_snap_write( &snap_buffer, &snap_length, &flags, snap,
				    snap_format, creator, 0 );
    if( error ) return error;

    if( flags & LIBSPECTRUM_FLAG_SNAPSHOT_MAJOR_INFO_LOSS ) {
      libspectrum_free( snap_buffer ); snap_length = 0;
      snap_format = LIBSPECTRUM_ID_SNAPSHOT_SZX;
      error = libspectrum_snap_write( &snap_buffer, &snap_length, &flags, snap,
				      snap_format, creator, 0 );
      if( error ) return error;
    }

  } else {
    error = libspectrum_snap_write( &snap_buffer, &snap_length, &flags, snap,
				    snap_format, creator, 0 );
    if( error ) return error;
  }

  if( flags & LIBSPECTRUM_FLAG_SNAPSHOT_MAJOR_INFO_LOSS ) {
    libspectrum_print_error( LIBSPECTRUM_ERROR_WARNING,
			     "%s:rzx_write_snapshot: embedded snapshot has lost a significant amount of information",
			     __FILE__ );
  }

  if( compress ) {

#ifdef HAVE_ZLIB_H

    error = libspectrum_zlib_compress( snap_buffer, snap_length,
				       &gzsnap, &gzlength );
    if( error != LIBSPECTRUM_ERROR_NONE ) {
      libspectrum_free( snap_buffer );
      return error;
    }

    libspectrum_make_room( buffer, 17 + gzlength, ptr, length );

#else				/* #ifdef HAVE_ZLIB_H */

    libspectrum_print_error( LIBSPECTRUM_ERROR_UNKNOWN,
			     "rzx_write_snapshot: compression needs zlib" );
    return LIBSPECTRUM_ERROR_UNKNOWN;

#endif				/* #ifdef HAVE_ZLIB_H */

  } else {
    libspectrum_make_room( buffer, 17 + snap_length, ptr, length );
  }

  *(*ptr)++ = LIBSPECTRUM_RZX_SNAPSHOT_BLOCK;
  if( compress ) {			/* Block length and flags */
    libspectrum_write_dword( ptr, 17 + gzlength );
    libspectrum_write_dword( ptr, 2 );
  } else {
    libspectrum_write_dword( ptr, 17 + snap_length );
    libspectrum_write_dword( ptr, 0 );
  }

  for( type = snapshot_strings, done = 0; type->format; type++ ) {
    if( type->format == snap_format ) {
      memcpy( *ptr, type->string, 4 ); *ptr += 4;
      done = 1;
      break;
    }
  }

  if( !done ) {
    libspectrum_print_error(
      LIBSPECTRUM_ERROR_UNKNOWN,
      "%s:rzx_write_snapshot: unexpected snap type %d", __FILE__, snap_format
    );
    return LIBSPECTRUM_ERROR_UNKNOWN;
  }

  libspectrum_write_dword( ptr, snap_length );	/* Snapshot length */

  if( compress ) {
    memcpy( *ptr, gzsnap, gzlength ); (*ptr) += gzlength;
    libspectrum_free( gzsnap );
  } else {
    memcpy( *ptr, snap_buffer, snap_length ); (*ptr) += snap_length;
  }

  libspectrum_free( snap_buffer );

  return LIBSPECTRUM_ERROR_NONE;
}
示例#4
0
libspectrum_error fuse_libspectrum_snap_write( libspectrum_byte **buffer, size_t *length, int *out_flags, libspectrum_snap *snap, libspectrum_id_t type, libspectrum_creator *creator, int in_flags )
{
   return libspectrum_snap_write( buffer, length, out_flags, snap, type, creator, in_flags | LIBSPECTRUM_FLAG_SNAPSHOT_NO_COMPRESSION );
}
int
main( int argc, char **argv )
{
  libspectrum_snap *snap;
  libspectrum_id_t type; libspectrum_class_t class;
  unsigned char *buffer; size_t length;
  libspectrum_creator *creator;
  int flags;
  int compress = 0;
  int fix = 0;
  FILE *f;

  int error = 0;
  int c;

  struct option long_options[] = {
    { "help", 0, NULL, 'h' },
    { "version", 0, NULL, 'V' },
    { 0, 0, 0, 0 }
  };

  progname = argv[0];

  while( ( c = getopt_long( argc, argv, "cnfhV", long_options, NULL ) ) != -1 ) {

    switch( c ) {

    case 'c': compress = LIBSPECTRUM_FLAG_SNAPSHOT_ALWAYS_COMPRESS;
      break;

    case 'n': compress = LIBSPECTRUM_FLAG_SNAPSHOT_NO_COMPRESSION;
      break;

    case 'f': fix = 1;
      break;

    case 'h': show_help(); return 0;

    case 'V': show_version(); return 0;

    case '?':
      /* getopt prints an error message to stderr */
      error = 1;
      break;

    default:
      error = 1;
      fprintf( stderr, "%s: unknown option `%c'\n", progname, (char) c );
      break;

    }
  }
  argc -= optind;
  argv += optind;

  if( error ) {
    fprintf( stderr, "Try `%s --help' for more information.\n", progname );
    return error;
  }

  if( argc < 2 ) {
    fprintf( stderr, "%s: usage: %s [-c] [-n] [-f] <infile> <outfile>\n", progname,
	     progname );
    fprintf( stderr, "Try `%s --help' for more information.\n", progname );
    return 1;
  }

  error = init_libspectrum(); if( error ) return error;

  snap = libspectrum_snap_alloc();

  if( read_file( argv[0], &buffer, &length ) ) {
    libspectrum_snap_free( snap );
    return 1;
  }

  error = libspectrum_snap_read( snap, buffer, length, LIBSPECTRUM_ID_UNKNOWN,
				 argv[0] );
  if( error ) {
    libspectrum_snap_free( snap ); free( buffer );
    return error;
  }

  free( buffer );

  if( fix ) fix_snapshot( snap );

  error = libspectrum_identify_file_with_class( &type, &class, argv[1], NULL,
                                                0 );
  if( error ) { libspectrum_snap_free( snap ); return error; }

  if( class != LIBSPECTRUM_CLASS_SNAPSHOT ) {
    fprintf( stderr, "%s: '%s' is not a snapshot file\n", progname, argv[1] );
    libspectrum_snap_free( snap );
    return 1;
  }

  error = get_creator( &creator, "snapconv" );
  if( error ) { libspectrum_snap_free( snap ); return error; }

  length = 0;
  error = libspectrum_snap_write( &buffer, &length, &flags, snap, type,
                                  creator, compress );
  if( error ) {
    libspectrum_creator_free( creator ); libspectrum_snap_free( snap );
    return error;
  }

  if( flags & LIBSPECTRUM_FLAG_SNAPSHOT_MAJOR_INFO_LOSS ) {
    fprintf( stderr,
	     "%s: warning: major information loss during conversion\n",
	     progname );
  } else if( flags & LIBSPECTRUM_FLAG_SNAPSHOT_MINOR_INFO_LOSS ) {
    fprintf( stderr,
	     "%s: warning: minor information loss during conversion\n",
	     progname );
  }
  error = libspectrum_creator_free( creator );
  if( error ) { free( buffer ); libspectrum_snap_free( snap ); return error; }

  error = libspectrum_snap_free( snap );
  if( error ) { free( buffer ); return error; }

  f = fopen( argv[1], "wb" );
  if( !f ) {
    fprintf( stderr, "%s: couldn't open '%s': %s\n", progname, argv[1],
	     strerror( errno ) );
    free( buffer );
    return 1;
  }
    
  if( fwrite( buffer, 1, length, f ) != length ) {
    fprintf( stderr, "%s: error writing to '%s'\n", progname, argv[1] );
    free( buffer );
    fclose( f );
    return 1;
  }

  free( buffer );
  fclose( f );

  return 0;
}