xref: /netbsd/include/vis.h (revision bf9ec67e)
1 /*	$NetBSD: vis.h,v 1.12 2002/03/23 17:39:05 christos Exp $	*/
2 
3 /*-
4  * Copyright (c) 1990, 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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  *	@(#)vis.h	8.1 (Berkeley) 6/2/93
36  */
37 
38 #ifndef _VIS_H_
39 #define	_VIS_H_
40 
41 /*
42  * to select alternate encoding format
43  */
44 #define	VIS_OCTAL	0x01	/* use octal \ddd format */
45 #define	VIS_CSTYLE	0x02	/* use \[nrft0..] where appropiate */
46 
47 /*
48  * to alter set of characters encoded (default is to encode all
49  * non-graphic except space, tab, and newline).
50  */
51 #define	VIS_SP		0x04	/* also encode space */
52 #define	VIS_TAB		0x08	/* also encode tab */
53 #define	VIS_NL		0x10	/* also encode newline */
54 #define	VIS_WHITE	(VIS_SP | VIS_TAB | VIS_NL)
55 #define	VIS_SAFE	0x20	/* only encode "unsafe" characters */
56 
57 /*
58  * other
59  */
60 #define	VIS_NOSLASH	0x40	/* inhibit printing '\' */
61 #define	VIS_HTTPSTYLE	0x80	/* http-style escape % HEX HEX */
62 
63 /*
64  * unvis return codes
65  */
66 #define	UNVIS_VALID	 1	/* character valid */
67 #define	UNVIS_VALIDPUSH	 2	/* character valid, push back passed char */
68 #define	UNVIS_NOCHAR	 3	/* valid sequence, no character produced */
69 #define	UNVIS_SYNBAD	-1	/* unrecognized escape sequence */
70 #define	UNVIS_ERROR	-2	/* decoder in unknown state (unrecoverable) */
71 
72 /*
73  * unvis flags
74  */
75 #define	UNVIS_END	1	/* no more characters */
76 
77 #include <sys/cdefs.h>
78 
79 __BEGIN_DECLS
80 char	*vis __P((char *, int, int, int));
81 char	*svis __P((char *, int, int, int, const char *));
82 int	strvis __P((char *, const char *, int));
83 int	strsvis __P((char *, const char *, int, const char *));
84 int	strvisx __P((char *, const char *, size_t, int));
85 int	strsvisx __P((char *, const char *, size_t, int, const char *));
86 int	strunvis __P((char *, const char *));
87 int	strunvisx __P((char *, const char *, int));
88 #ifdef __LIBC12_SOURCE__
89 int	unvis __P((char *, int, int *, int));
90 int	__unvis13 __P((char *, int, int *, int));
91 #else
92 int	unvis __P((char *, int, int *, int))	__RENAME(__unvis13);
93 #endif
94 __END_DECLS
95 
96 #endif /* !_VIS_H_ */
97