1 /* Regular expression tests.
2    Copyright (C) 2002-2022 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #include <sys/types.h>
20 #include <mcheck.h>
21 #include <regex.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 
26 static struct
27 {
28   int syntax;
29   const char *pattern;
30   const char *string;
31   int start;
32 } tests[] = {
33   {RE_BACKSLASH_ESCAPE_IN_LISTS, "[0\\-9]", "1", -1}, /* It should not match.  */
34   {RE_BACKSLASH_ESCAPE_IN_LISTS, "[0\\-9]", "-", 0}, /* It should match.  */
35   {RE_SYNTAX_POSIX_BASIC, "s1\n.*\ns3", "s1\ns2\ns3", 0},
36   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "ac", 0},
37   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "abc", -1},
38   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "abbc", -1},
39   /* Nested duplication.  */
40   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "ac", -1},
41   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "abc", 0},
42   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "abbc", -1},
43   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "ac", -1},
44   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbc", -1},
45   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbbbc", 0},
46   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbbbbc", -1},
47   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "ac", 0},
48   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "abc", -1},
49   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "abbc", -1},
50   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "ac", 0},
51   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "abc", -1},
52   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "abbc", -1},
53   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "ac", 0},
54   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "abc", -1},
55   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "abbc", -1},
56   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "ac", 0},
57   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "abc", -1},
58   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "abbc", -1},
59   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "ac", 0},
60   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "abc", -1},
61   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "abbc", -1},
62 };
63 
64 int
main(void)65 main (void)
66 {
67   struct re_pattern_buffer regbuf;
68   const char *err;
69   size_t i;
70   int ret = 0;
71 
72   mtrace ();
73 
74   for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
75     {
76       int start;
77       re_set_syntax (tests[i].syntax);
78       memset (&regbuf, '\0', sizeof (regbuf));
79       err = re_compile_pattern (tests[i].pattern, strlen (tests[i].pattern),
80                                 &regbuf);
81       if (err != NULL)
82 	{
83 	  printf ("re_compile_pattern failed: %s\n", err);
84 	  ret = 1;
85 	  continue;
86 	}
87 
88       start = re_search (&regbuf, tests[i].string, strlen (tests[i].string),
89                          0, strlen (tests[i].string), NULL);
90       if (start != tests[i].start)
91 	{
92 	  printf ("re_search failed %d\n", start);
93 	  ret = 1;
94 	  regfree (&regbuf);
95 	  continue;
96 	}
97       regfree (&regbuf);
98     }
99 
100   return ret;
101 }
102