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 */
40int
41regcomp(re, str, flags)
42regex_t *re;
43CONST char *str;
44int 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 */
61int
62regexec(re, str, nmatch, pmatch, flags)
63regex_t *re;
64CONST char *str;
65size_t nmatch;
66regmatch_t pmatch[];
67int 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}
84