/*
** bd v1.0
**
** Binary diff
**
** Copyright (C) 20.11.96 by Andreas Ley <ley@rz.uni-karlsruhe.de>
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** This program has been tested on a HP9000/715 with HP-UX A.09.07
** In this environment, neither lint -u nor gcc -Wall -fsyntax-only produce
** any messages. If you encounter any errors or need to make any changes to
** port it to another platform, please contact me.
**
** Version history
**
** Version 1.0 - 20.11.96
**	Initial version
*/

static char copyright[] = "@(#)Copyright (C) 1996 by Andreas Ley (ley@rz.uni-karlsruhe.de)";
static char sccsid[] = "@(#)bd v1.0 - Binary diff";


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

#ifndef FALSE
#define	FALSE	(0)		/* This is the naked Truth */
#define	TRUE	(1)		/* and this is the Light */
#endif


char	*image;
int	debug=0;


static void bd(src)
FILE	*src;
{
	char	line[8*1024],*ptr;

	if (debug)
		(void)fprintf(stderr,"bd(0x%08lx)\n",src);
	while (fgets(line,sizeof(line),src)) {
		ptr=strchr(line,'\0');
		if (*(ptr-1)=='\n')
			ptr--;
		if (*(ptr-1)=='\r')
			ptr--;
		while (ptr>line && *(ptr-1)==' ')
			ptr--;
		*ptr='\0';
	}
}



static void usage()
{
	(void)fprintf(stderr,"Usage: %s [-h] [-v] [filename...]\n",image);
	exit(1);
}


int main(argc,argv)
int	argc;
char	*argv[];
{
	int		c;
	extern char	*optarg;
	extern int	optind;
	FILE		*src;

	if ((image=strrchr(argv[0],'/')))
		image++;
	else
		image=argv[0];

	while ((c=getopt(argc,argv,"Dvh?"))!=EOF)
		switch ((char)c) {
		case 'D':
			debug++;
			break;
		case 'v':
			(void)fprintf(stderr,"%s\n",sccsid+4);
			(void)fprintf(stderr,"%s\n",copyright+4);
			exit(0);
		case 'h':
			(void)fprintf(stderr,"%s\n",sccsid+4);
			(void)fprintf(stderr,"%s\n",copyright+4);
		case '?':
			usage();
		}

	if (optind<argc)
		for (;optind<argc;optind++)
			if (strcmp(argv[optind],"-"))
				if ((src=fopen(argv[optind],"r"))) {
					bd(src);
					(void)fclose(src);
				}
				else {
					(void)fprintf(stderr,"%s: cannot open ",image);
					perror(argv[optind]);
				}
			else
				bd(stdin);
	else
		bd(stdin);

	return(0);
}