src/regex/regfronts.c

/*
 * regcomp and regexec - front ends to re_ routines
 *
 * Mostly for implementation of backward-compatibility kludges.  Note
 * that these routines exist ONLY in char versions.
 *
 * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
 *
 * Development of this software was funded, in part, by Cray Research Inc.,
 * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
 * Corporation, none of whom are responsible for the results.  The author
 * thanks all of them.
 *
 * Redistribution and use in source and binary forms -- with or without
 * modification -- are permitted for any purpose, provided that
 * redistributions in source form retain this entire copyright notice and
 * indicate the origin and nature of any modifications.
 *
 * I'd appreciate being given credit for this package in the documentation
 * of software which uses it, but that is not a requirement.
 *
 * THIS SOFTWARE IS PROVIDED ``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
 * HENRY SPENCER 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.
 *
 */

#include "regguts.h"

/*
 - regcomp - compile regular expression
 */
int
regcomp(re, str, flags)
regex_t *re;
CONST char *str;
int flags;
{
	size_t len;
	int f = flags;

	if (f&REG_PEND) {
		len = re->re_endp - str;
		f &= ~REG_PEND;
	} else
		len = strlen(str);

	return re_comp(re, str, len, f);
}

/*
 - regexec - execute regular expression
 */
int
regexec(re, str, nmatch, pmatch, flags)
regex_t *re;
CONST char *str;
size_t nmatch;
regmatch_t pmatch[];
int flags;
{
	CONST char *start;
	size_t len;
	int f = flags;

	if (f&REG_STARTEND) {
		start = str + pmatch[0].rm_so;
		len = pmatch[0].rm_eo - pmatch[0].rm_so;
		f &= ~REG_STARTEND;
	} else {
		start = str;
		len = strlen(str);
	}

	return re_exec(re, start, len, nmatch, pmatch, f);
}
Commit	Line	Data
	1	/*
	2	* regcomp and regexec - front ends to re_ routines
	3	*
	4	* Mostly for implementation of backward-compatibility kludges. Note
	5	* that these routines exist ONLY in char versions.
	6	*
	7	* Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
	8	*
	9	* Development of this software was funded, in part, by Cray Research Inc.,
	10	* UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
	11	* Corporation, none of whom are responsible for the results. The author
	12	* thanks all of them.
	13	*
	14	* Redistribution and use in source and binary forms -- with or without
	15	* modification -- are permitted for any purpose, provided that
	16	* redistributions in source form retain this entire copyright notice and
	17	* indicate the origin and nature of any modifications.
	18	*
	19	* I'd appreciate being given credit for this package in the documentation
	20	* of software which uses it, but that is not a requirement.
	21	*
	22	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	23	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	24	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
	25	* HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	26	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	27	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
	28	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	29	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	30	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	31	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	32	*
	33	*/
	34
	35	#include "regguts.h"
	36
	37	/*
	38	- regcomp - compile regular expression
	39	*/
	40	int
	41	regcomp(re, str, flags)
	42	regex_t *re;
	43	CONST char *str;
	44	int flags;
	45	{
	46	size_t len;
	47	int f = flags;
	48
	49	if (f&REG_PEND) {
	50	len = re->re_endp - str;
	51	f &= ~REG_PEND;
	52	} else
	53	len = strlen(str);
	54
	55	return re_comp(re, str, len, f);
	56	}
	57
	58	/*
	59	- regexec - execute regular expression
	60	*/
	61	int
	62	regexec(re, str, nmatch, pmatch, flags)
	63	regex_t *re;
	64	CONST char *str;
	65	size_t nmatch;
	66	regmatch_t pmatch[];
	67	int flags;
	68	{
	69	CONST char *start;
	70	size_t len;
	71	int f = flags;
	72
	73	if (f&REG_STARTEND) {
	74	start = str + pmatch[0].rm_so;
	75	len = pmatch[0].rm_eo - pmatch[0].rm_so;
	76	f &= ~REG_STARTEND;
	77	} else {
	78	start = str;
	79	len = strlen(str);
	80	}
	81
	82	return re_exec(re, start, len, nmatch, pmatch, f);
	83	}