1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin * *
3da2e3ebdSchin * This software is part of the ast package *
4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2012 AT&T Intellectual Property *
5da2e3ebdSchin * and is licensed under the *
6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 *
77c2fbfb3SApril Chin * by AT&T Intellectual Property *
8da2e3ebdSchin * *
9da2e3ebdSchin * A copy of the License is available at *
10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html *
11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12da2e3ebdSchin * *
13da2e3ebdSchin * Information and Software Systems Research *
14da2e3ebdSchin * AT&T Research *
15da2e3ebdSchin * Florham Park NJ *
16da2e3ebdSchin * *
17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> *
18da2e3ebdSchin * David Korn <dgk@research.att.com> *
19da2e3ebdSchin * Phong Vo <kpv@research.att.com> *
20da2e3ebdSchin * *
21da2e3ebdSchin ***********************************************************************/
22da2e3ebdSchin #pragma prototyped
23da2e3ebdSchin
24da2e3ebdSchin /*
25da2e3ebdSchin * posix regex executor
26da2e3ebdSchin * single unsized-string interface
27da2e3ebdSchin */
28da2e3ebdSchin
29da2e3ebdSchin #include "reglib.h"
30da2e3ebdSchin
31da2e3ebdSchin /*
32da2e3ebdSchin * standard wrapper for the sized-record interface
33da2e3ebdSchin */
34da2e3ebdSchin
35da2e3ebdSchin int
regexec(const regex_t * p,const char * s,size_t nmatch,regmatch_t * match,regflags_t flags)36da2e3ebdSchin regexec(const regex_t* p, const char* s, size_t nmatch, regmatch_t* match, regflags_t flags)
37da2e3ebdSchin {
38da2e3ebdSchin if (flags & REG_STARTEND)
39da2e3ebdSchin {
40da2e3ebdSchin int r;
41da2e3ebdSchin int m = match->rm_so;
42da2e3ebdSchin regmatch_t* e;
43da2e3ebdSchin
44da2e3ebdSchin if (!(r = regnexec(p, s + m, match->rm_eo - m, nmatch, match, flags)) && m > 0)
45da2e3ebdSchin for (e = match + nmatch; match < e; match++)
46da2e3ebdSchin if (match->rm_so >= 0)
47da2e3ebdSchin {
48da2e3ebdSchin match->rm_so += m;
49da2e3ebdSchin match->rm_eo += m;
50da2e3ebdSchin }
51da2e3ebdSchin return r;
52da2e3ebdSchin }
53da2e3ebdSchin return regnexec(p, s, s ? strlen(s) : 0, nmatch, match, flags);
54da2e3ebdSchin }
55*b30d1939SAndy Fiddaman
56*b30d1939SAndy Fiddaman /*
57*b30d1939SAndy Fiddaman * 20120528: regoff_t changed from int to ssize_t
58*b30d1939SAndy Fiddaman */
59*b30d1939SAndy Fiddaman
60*b30d1939SAndy Fiddaman #if defined(__EXPORT__)
61*b30d1939SAndy Fiddaman #define extern __EXPORT__
62*b30d1939SAndy Fiddaman #endif
63*b30d1939SAndy Fiddaman
64*b30d1939SAndy Fiddaman #undef regexec
65*b30d1939SAndy Fiddaman #if _map_libc
66*b30d1939SAndy Fiddaman #define regexec _ast_regexec
67*b30d1939SAndy Fiddaman #endif
68*b30d1939SAndy Fiddaman
69*b30d1939SAndy Fiddaman extern int
regexec(const regex_t * p,const char * s,size_t nmatch,oldregmatch_t * oldmatch,regflags_t flags)70*b30d1939SAndy Fiddaman regexec(const regex_t* p, const char* s, size_t nmatch, oldregmatch_t* oldmatch, regflags_t flags)
71*b30d1939SAndy Fiddaman {
72*b30d1939SAndy Fiddaman if (oldmatch)
73*b30d1939SAndy Fiddaman {
74*b30d1939SAndy Fiddaman regmatch_t* match;
75*b30d1939SAndy Fiddaman size_t i;
76*b30d1939SAndy Fiddaman int r;
77*b30d1939SAndy Fiddaman
78*b30d1939SAndy Fiddaman if (!(match = oldof(0, regmatch_t, nmatch, 0)))
79*b30d1939SAndy Fiddaman return -1;
80*b30d1939SAndy Fiddaman if (!(r = regexec_20120528(p, s, nmatch, match, flags)))
81*b30d1939SAndy Fiddaman for (i = 0; i < nmatch; i++)
82*b30d1939SAndy Fiddaman {
83*b30d1939SAndy Fiddaman oldmatch[i].rm_so = match[i].rm_so;
84*b30d1939SAndy Fiddaman oldmatch[i].rm_eo = match[i].rm_eo;
85*b30d1939SAndy Fiddaman }
86*b30d1939SAndy Fiddaman free(match);
87*b30d1939SAndy Fiddaman return r;
88*b30d1939SAndy Fiddaman }
89*b30d1939SAndy Fiddaman return regexec_20120528(p, s, 0, NiL, flags);
90*b30d1939SAndy Fiddaman }
91