1 /*	$OpenBSD: vis.h,v 1.15 2015/07/20 01:52:27 millert Exp $	*/
2 /*	$NetBSD: vis.h,v 1.4 1994/10/26 00:56:41 cgd Exp $	*/
3 
4 /*-
5  * Copyright (c) 1990 The Regents of the University of California.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  *	@(#)vis.h	5.9 (Berkeley) 4/3/91
33  */
34 
35 #ifndef _VIS_H_
36 #define	_VIS_H_
37 
38 /*
39  * to select alternate encoding format
40  */
41 #define	VIS_OCTAL	0x01	/* use octal \ddd format */
42 #define	VIS_CSTYLE	0x02	/* use \[nrft0..] where appropriate */
43 
44 /*
45  * to alter set of characters encoded (default is to encode all
46  * non-graphic except space, tab, and newline).
47  */
48 #define	VIS_SP		0x04	/* also encode space */
49 #define	VIS_TAB		0x08	/* also encode tab */
50 #define	VIS_NL		0x10	/* also encode newline */
51 #define	VIS_WHITE	(VIS_SP | VIS_TAB | VIS_NL)
52 #define	VIS_SAFE	0x20	/* only encode "unsafe" characters */
53 #define	VIS_DQ		0x200	/* backslash-escape double quotes */
54 #define	VIS_ALL		0x400	/* encode all characters */
55 
56 /*
57  * other
58  */
59 #define	VIS_NOSLASH	0x40	/* inhibit printing '\' */
60 #define	VIS_GLOB	0x100	/* encode glob(3) magics and '#' */
61 
62 /*
63  * unvis return codes
64  */
65 #define	UNVIS_VALID	 1	/* character valid */
66 #define	UNVIS_VALIDPUSH	 2	/* character valid, push back passed char */
67 #define	UNVIS_NOCHAR	 3	/* valid sequence, no character produced */
68 #define	UNVIS_SYNBAD	-1	/* unrecognized escape sequence */
69 #define	UNVIS_ERROR	-2	/* decoder in unknown state (unrecoverable) */
70 
71 /*
72  * unvis flags
73  */
74 #define	UNVIS_END	1	/* no more characters */
75 
76 char	*vis(char *, int, int, int);
77 int	strvis(char *, const char *, int);
78 int	stravis(char **, const char *, int);
79 int	strnvis(char *, const char *, size_t, int);
80 int	strvisx(char *, const char *, size_t, int);
81 int	strunvis(char *, const char *);
82 int	unvis(char *, char, int *, int);
83 ssize_t strnunvis(char *, const char *, size_t);
84 
85 #endif /* !_VIS_H_ */