1 /* Test of constructing a regular expression from a literal string.
2 Copyright (C) 2010-2021 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */
18
19 #include <config.h>
20
21 #include "regex-quote.h"
22
23 #include <string.h>
24
25 #include "regex.h"
26 #include "xalloc.h"
27 #include "macros.h"
28
29 static void
check(const char * literal,int cflags,const char * expected)30 check (const char *literal, int cflags, const char *expected)
31 {
32 struct regex_quote_spec spec;
33 char *result;
34 size_t length;
35
36 spec = regex_quote_spec_posix (cflags, false);
37 result = regex_quote (literal, &spec);
38 ASSERT (strcmp (result, expected) == 0);
39 length = regex_quote_length (literal, &spec);
40 ASSERT (length == strlen (result));
41 free (result);
42
43 result = (char *) xmalloc (1 + length + 1 + 1);
44 result[0] = '^';
45 strcpy (regex_quote_copy (result + 1, literal, &spec), "$");
46 {
47 regex_t regex;
48 regmatch_t match[1];
49
50 ASSERT (regcomp (®ex, result, cflags) == 0);
51
52 ASSERT (regexec (®ex, literal, 1, match, 0) == 0);
53 ASSERT (match[0].rm_so == 0);
54 ASSERT (match[0].rm_eo == strlen (literal));
55 regfree (®ex);
56 }
57 free (result);
58
59 spec = regex_quote_spec_posix (cflags, true);
60 result = regex_quote (literal, &spec);
61 length = regex_quote_length (literal, &spec);
62 ASSERT (length == strlen (result));
63 {
64 regex_t regex;
65 regmatch_t match[1];
66
67 ASSERT (regcomp (®ex, result, cflags) == 0);
68
69 ASSERT (regexec (®ex, literal, 1, match, 0) == 0);
70 ASSERT (match[0].rm_so == 0);
71 ASSERT (match[0].rm_eo == strlen (literal));
72 regfree (®ex);
73 }
74 free (result);
75 }
76
77 static void
test_bre(void)78 test_bre (void)
79 {
80 check ("aBc", 0, "aBc");
81 check ("(foo[$HOME])", 0, "(foo\\[\\$HOME\\])");
82 }
83
84 static void
test_ere(void)85 test_ere (void)
86 {
87 check ("aBc", REG_EXTENDED, "aBc");
88 check ("(foo[$HOME])", REG_EXTENDED, "\\(foo\\[\\$HOME\\]\\)");
89 }
90
91 int
main()92 main ()
93 {
94 test_bre ();
95 test_ere ();
96 return 0;
97 }
98