00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/* $NetBSD: region.h,v 1.6 2014/12/10 04:38:00 christos Exp $ */
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/*
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* Copyright (C) 2004-2007, 2013 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1998-2002 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: region.h,v 1.25 2007/06/19 23:47:18 tbox Exp */
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#ifndef ISC_REGION_H
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#define ISC_REGION_H 1
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/*! \file isc/region.h */
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#include <isc/types.h>
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#include <isc/lang.h>
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struct isc_region {
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unsigned char * base;
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unsigned int length;
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};
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struct isc_textregion {
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char * base;
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unsigned int length;
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};
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/* XXXDCL questionable ... bears discussion. we have been putting off
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* discussing the region api.
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*/
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struct isc_constregion {
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const void * base;
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unsigned int length;
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};
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struct isc_consttextregion {
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const char * base;
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unsigned int length;
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};
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/*@{*/
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/*!
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* The region structure is not opaque, and is usually directly manipulated.
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* Some macros are defined below for convenience.
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*/
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#define isc_region_consume(r,l) \
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do { \
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isc_region_t *_r = (r); \
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unsigned int _l = (l); \
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INSIST(_r->length >= _l); \
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_r->base += _l; \
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_r->length -= _l; \
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} while (/*CONSTCOND*/0)
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#define isc_textregion_consume(r,l) \
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do { \
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isc_textregion_t *_r = (r); \
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unsigned int _l = (l); \
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INSIST(_r->length >= _l); \
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_r->base += _l; \
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_r->length -= _l; \
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} while (/*CONSTCOND*/0)
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#define isc_constregion_consume(r,l) \
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do { \
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isc_constregion_t *_r = (r); \
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unsigned int _l = (l); \
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INSIST(_r->length >= _l); \
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_r->base += _l; \
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_r->length -= _l; \
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} while (/*CONSTCOND*/0)
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/*@}*/
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ISC_LANG_BEGINDECLS
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int
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isc_region_compare(isc_region_t *r1, isc_region_t *r2);
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/*%<
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* Compares the contents of two regions
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*
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* Requires:
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*\li 'r1' is a valid region
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*\li 'r2' is a valid region
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*
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* Returns:
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*\li < 0 if r1 is lexicographically less than r2
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*\li = 0 if r1 is lexicographically identical to r2
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*\li > 0 if r1 is lexicographically greater than r2
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*/
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ISC_LANG_ENDDECLS
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#endif /* ISC_REGION_H */
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