2
* shmatch.c -- shell interface to posix regular expression matching.
5
/* Copyright (C) 2003 Free Software Foundation, Inc.
7
This file is part of GNU Bash, the Bourne Again SHell.
9
Bash is free software: you can redistribute it and/or modify
10
it under the terms of the GNU General Public License as published by
11
the Free Software Foundation, either version 3 of the License, or
12
(at your option) any later version.
14
Bash is distributed in the hope that it will be useful,
15
but WITHOUT ANY WARRANTY; without even the implied warranty of
16
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17
GNU General Public License for more details.
19
You should have received a copy of the GNU General Public License
20
along with Bash. If not, see <http://www.gnu.org/licenses/>.
27
#if defined (HAVE_POSIX_REGEXP)
39
#include "variables.h"
42
extern int glob_ignore_case, match_ignore_case;
45
sh_regmatch (string, pattern, flags)
50
regex_t regex = { 0 };
53
#if defined (ARRAY_VARS)
62
#if defined (ARRAY_VARS)
63
rematch = (SHELL_VAR *)NULL;
66
rflags = REG_EXTENDED;
67
if (glob_ignore_case || match_ignore_case)
69
#if !defined (ARRAY_VARS)
73
if (regcomp (®ex, pattern, rflags))
74
return 2; /* flag for printing a warning here. */
76
#if defined (ARRAY_VARS)
77
matches = (regmatch_t *)malloc (sizeof (regmatch_t) * (regex.re_nsub + 1));
82
if (regexec (®ex, string, regex.re_nsub + 1, matches, 0))
83
result = EXECUTION_FAILURE;
85
result = EXECUTION_SUCCESS; /* match */
87
#if defined (ARRAY_VARS)
88
subexp_len = strlen (string) + 10;
89
subexp_str = malloc (subexp_len + 1);
91
/* Store the parenthesized subexpressions in the array BASH_REMATCH.
92
Element 0 is the portion that matched the entire regexp. Element 1
93
is the part that matched the first subexpression, and so on. */
94
unbind_variable ("BASH_REMATCH");
95
rematch = make_new_array_variable ("BASH_REMATCH");
96
amatch = array_cell (rematch);
98
if ((flags & SHMAT_SUBEXP) && result == EXECUTION_SUCCESS && subexp_str)
100
for (subexp_ind = 0; subexp_ind <= regex.re_nsub; subexp_ind++)
102
memset (subexp_str, 0, subexp_len);
103
strncpy (subexp_str, string + matches[subexp_ind].rm_so,
104
matches[subexp_ind].rm_eo - matches[subexp_ind].rm_so);
105
array_insert (amatch, subexp_ind, subexp_str);
109
VSETATTR (rematch, att_readonly);
113
#endif /* ARRAY_VARS */
120
#endif /* HAVE_POSIX_REGEXP */