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/* snapconv.c: Convert snapshot formats
Copyright (c) 2003-2005 Philip Kendall
$Id: snapconv.c 4168 2010-10-03 01:14:09Z fredm $
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <libspectrum.h>
#include "compat.h"
#include "utils.h"
char *progname;
static void
fix_snapshot( libspectrum_snap *snap )
{
libspectrum_byte a = libspectrum_snap_a( snap );
libspectrum_byte f = libspectrum_snap_f( snap );
libspectrum_snap_set_a( snap, f );
libspectrum_snap_set_f( snap, a );
a = libspectrum_snap_a_( snap );
f = libspectrum_snap_f_( snap );
libspectrum_snap_set_a_( snap, f );
libspectrum_snap_set_f_( snap, a );
}
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;
int c;
progname = argv[0];
while( ( c = getopt( argc, argv, "cnf" ) ) != -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;
}
}
argc -= optind;
argv += optind;
if( argc < 2 ) {
fprintf( stderr, "%s: usage: %s [-c] [-n] [-f] <infile> <outfile>\n", progname,
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 );
return 1;
}
free( buffer );
return 0;
}
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