1/*	$OpenBSD: diff.h,v 1.35 2024/05/21 05:00:48 jsg Exp $	 */
2
3/*
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)diff.h	8.1 (Berkeley) 6/6/93
32 */
33
34#include <sys/types.h>
35#include <regex.h>
36
37/*
38 * Output format options
39 */
40#define	D_NORMAL	0	/* Normal output */
41#define	D_EDIT		-1	/* Editor script out */
42#define	D_REVERSE	1	/* Reverse editor script */
43#define	D_CONTEXT	2	/* Diff with context */
44#define	D_UNIFIED	3	/* Unified context diff */
45#define	D_IFDEF		4	/* Diff with merged #ifdef's */
46#define	D_NREVERSE	5	/* Reverse ed script with numbered
47				   lines and no trailing . */
48#define	D_BRIEF		6	/* Say if the files differ */
49
50/*
51 * Output flags
52 */
53#define	D_HEADER	0x001	/* Print a header/footer between files */
54#define	D_EMPTY1	0x002	/* Treat first file as empty (/dev/null) */
55#define	D_EMPTY2	0x004	/* Treat second file as empty (/dev/null) */
56
57/*
58 * Command line flags
59 */
60#define D_FORCEASCII	0x008	/* Treat file as ascii regardless of content */
61#define D_FOLDBLANKS	0x010	/* Treat all white space as equal */
62#define D_MINIMAL	0x020	/* Make diff as small as possible */
63#define D_IGNORECASE	0x040	/* Case-insensitive matching */
64#define D_PROTOTYPE	0x080	/* Display C function prototype */
65#define D_EXPANDTABS	0x100	/* Expand tabs to spaces */
66#define D_IGNOREBLANKS	0x200	/* Ignore white space changes */
67
68/*
69 * Status values for print_status() and diffreg() return values
70 */
71#define	D_SAME		0	/* Files are the same */
72#define	D_DIFFER	1	/* Files are different */
73#define	D_BINARY	2	/* Binary files are different */
74#define	D_MISMATCH1	3	/* path1 was a dir, path2 a file */
75#define	D_MISMATCH2	4	/* path1 was a file, path2 a dir */
76#define	D_SKIPPED1	5	/* path1 was a special file */
77#define	D_SKIPPED2	6	/* path2 was a special file */
78
79struct excludes {
80	char *pattern;
81	struct excludes *next;
82};
83
84extern int	Nflag, Pflag, rflag, sflag, Tflag;
85extern int	diff_format, diff_context, status;
86extern char	*start, *ifdefname, *diffargs, *label[2], *ignore_pats;
87extern struct	stat stb1, stb2;
88extern struct	excludes *excludes_list;
89extern regex_t	ignore_re;
90
91char	*splice(char *, char *);
92int	diffreg(char *, char *, int);
93void	diffdir(char *, char *, int);
94void	print_only(const char *, size_t, const char *);
95void	print_status(int, char *, char *, char *);
96