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/* $NetBSD: vis.h,v 1.25 2017/04/23 01:57:36 christos Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)vis.h 8.1 (Berkeley) 6/2/93
*/
#ifndef LIBBSD_VIS_H
#define LIBBSD_VIS_H
#include <sys/types.h>
/*
* to select alternate encoding format
*/
#define VIS_OCTAL 0x0001 /* use octal \ddd format */
#define VIS_CSTYLE 0x0002 /* use \[nrft0..] where appropriate */
/*
* to alter set of characters encoded (default is to encode all
* non-graphic except space, tab, and newline).
*/
#define VIS_SP 0x0004 /* also encode space */
#define VIS_TAB 0x0008 /* also encode tab */
#define VIS_NL 0x0010 /* also encode newline */
#define VIS_WHITE (VIS_SP | VIS_TAB | VIS_NL)
#define VIS_SAFE 0x0020 /* only encode "unsafe" characters */
#define VIS_DQ 0x8000 /* also encode double quotes */
/*
* other
*/
#define VIS_NOSLASH 0x0040 /* inhibit printing '\' */
#define VIS_HTTP1808 0x0080 /* http-style escape % hex hex */
#define VIS_HTTPSTYLE 0x0080 /* http-style escape % hex hex */
#define VIS_MIMESTYLE 0x0100 /* mime-style escape = HEX HEX */
#define VIS_HTTP1866 0x0200 /* http-style &#num; or &string; */
#define VIS_NOESCAPE 0x0400 /* don't decode `\' */
#define _VIS_END 0x0800 /* for unvis */
#define VIS_GLOB 0x1000 /* encode glob(3) magic characters */
#define VIS_SHELL 0x2000 /* encode shell special characters [not glob] */
#define VIS_META (VIS_WHITE | VIS_GLOB | VIS_SHELL)
#define VIS_NOLOCALE 0x4000 /* encode using the C locale */
/*
* unvis return codes
*/
#define UNVIS_VALID 1 /* character valid */
#define UNVIS_VALIDPUSH 2 /* character valid, push back passed char */
#define UNVIS_NOCHAR 3 /* valid sequence, no character produced */
#define UNVIS_SYNBAD -1 /* unrecognized escape sequence */
#define UNVIS_ERROR -2 /* decoder in unknown state (unrecoverable) */
/*
* unvis flags
*/
#define UNVIS_END _VIS_END /* no more characters */
#ifdef LIBBSD_OVERLAY
#include <sys/cdefs.h>
#else
#include <bsd/sys/cdefs.h>
#endif
/*
* NetBSD added an strnvis and unfortunately made it incompatible with the
* existing one in OpenBSD and Freedesktop's libbsd (the former having existed
* for over ten years). Despite this incompatibility being reported during
* development (see http://gnats.netbsd.org/44977) they still shipped it.
* Even more unfortunately FreeBSD and later macOS picked up this incompatible
* implementation.
*
* Provide both implementations and default for now on the historical one to
* avoid breakage, we will switch to the NetBSD one in libbsd 0.10.0 or so.
* Define LIBBSD_NETBSD_VIS to switch to the NetBSD one now.
* Define LIBBSD_OPENBSD_VIS to keep using the OpenBSD one.
*/
#if defined(LIBBSD_OPENBSD_VIS)
#undef LIBBSD_NETBSD_VIS
#elif !defined(LIBBSD_NETBSD_VIS)
#warning "NetBSD added incompatible strnvis() and strnunvis(), please see <bsd/vis.h> for more detils."
#endif
__BEGIN_DECLS
char *vis(char *, int, int, int);
char *nvis(char *, size_t, int, int, int);
char *svis(char *, int, int, int, const char *);
char *snvis(char *, size_t, int, int, int, const char *);
int strvis(char *, const char *, int);
int stravis(char **, const char *, int);
#ifdef LIBBSD_NETBSD_VIS
/* NetBSD prototype. */
int LIBBSD_REDIRECT(strnvis, (char *, size_t, const char *, int),
strnvis_netbsd);
#else
/* OpenBSD prototype (current default). */
int strnvis(char *, const char *, size_t, int);
#endif
int strsvis(char *, const char *, int, const char *);
int strsnvis(char *, size_t, const char *, int, const char *);
int strvisx(char *, const char *, size_t, int);
int strnvisx(char *, size_t, const char *, size_t, int);
int strenvisx(char *, size_t, const char *, size_t, int, int *);
int strsvisx(char *, const char *, size_t, int, const char *);
int strsnvisx(char *, size_t, const char *, size_t, int, const char *);
int strsenvisx(char *, size_t, const char *, size_t , int, const char *,
int *);
int strunvis(char *, const char *);
#ifdef LIBBSD_NETBSD_VIS
/* NetBSD prototype. */
int LIBBSD_REDIRECT(strnunvis, (char *, size_t, const char *),
strnunvis_netbsd);
#else
/* OpenBSD prototype (current default). */
ssize_t strnunvis(char *, const char *, size_t);
#endif
int strunvisx(char *, const char *, int);
int strnunvisx(char *, size_t, const char *, int);
int unvis(char *, int, int *, int);
__END_DECLS
#endif /* !LIBBSD_VIS_H */