1 /* Regular expression tests.
2 Copyright (C) 2003-2023 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 void
27 frob_escapes (char *src, int pattern)
28 {
29 char *dst;
30
31 for (dst = src; *src != '\0'; dst++, src++)
32 {
33 if (*src == '\\')
34 {
35 switch (src[1])
36 {
37 case 't':
38 src++;
39 *dst = '\t';
40 continue;
41 case 'n':
42 src++;
43 *dst = '\n';
44 continue;
45 case 'r':
46 src++;
47 *dst = '\r';
48 continue;
49 case '\\':
50 case '^':
51 case '{':
52 case '|':
53 case '}':
54 if (!pattern)
55 {
56 src++;
57 *dst = *src;
58 continue;
59 }
60 break;
61 }
62 }
63 if (src != dst)
64 *dst = *src;
65 }
66 *dst = '\0';
67 }
68
69 int
70 main (int argc, char **argv)
71 {
72 int ret = 0, n;
73 char *line = NULL;
74 size_t line_len = 0;
75 ssize_t len;
76 FILE *f;
77 char *pattern, *string;
78 int flags = REG_EXTENDED;
79 int eflags = 0;
80 regex_t re;
81 regmatch_t rm[20];
82
83 mtrace ();
84
85 if (argc < 2)
86 {
87 fprintf (stderr, "Missing test filename\n");
88 return 1;
89 }
90
91 f = fopen (argv[1], "r");
92 if (f == NULL)
93 {
94 fprintf (stderr, "Couldn't open %s\n", argv[1]);
95 return 1;
96 }
97
98 while ((len = getline (&line, &line_len, f)) > 0)
99 {
100 char *p, *q;
101 int i;
102
103 if (line[len - 1] == '\n')
104 line[--len] = '\0';
105
106 puts (line);
107
108 if (line[0] == ';')
109 continue;
110
111 if (line[0] == '\0')
112 continue;
113
114 if (line[0] == '-')
115 {
116 if (strstr (line, "REG_BASIC"))
117 flags = 0;
118 else
119 flags = REG_EXTENDED;
120 if (strstr (line, "REG_ICASE"))
121 flags |= REG_ICASE;
122 if (strstr (line, "REG_NEWLINE"))
123 flags |= REG_NEWLINE;
124 eflags = 0;
125 if (strstr (line, "REG_NOTBOL"))
126 eflags |= REG_NOTBOL;
127 if (strstr (line, "REG_NOTEOL"))
128 eflags |= REG_NOTEOL;
129 continue;
130 }
131
132 pattern = line + strspn (line, " \t");
133 if (*pattern == '\0')
134 continue;
135 p = pattern + strcspn (pattern, " \t");
136 if (*p == '\0')
137 continue;
138 *p++ = '\0';
139
140 string = p + strspn (p, " \t");
141 if (*string == '\0')
142 continue;
143 if (*string == '"')
144 {
145 string++;
146 p = strchr (string, '"');
147 if (p == NULL)
148 continue;
149 *p++ = '\0';
150 }
151 else
152 {
153 p = string + strcspn (string, " \t");
154 if (*string == '!')
155 string = NULL;
156 else if (*p == '\0')
157 continue;
158 else
159 *p++ = '\0';
160 }
161
162 frob_escapes (pattern, 1);
163 if (string != NULL)
164 frob_escapes (string, 0);
165
166 n = regcomp (&re, pattern, flags);
167 if (n != 0)
168 {
169 if (string != NULL)
170 {
171 char buf[500];
172 regerror (n, &re, buf, sizeof (buf));
173 printf ("FAIL regcomp unexpectedly failed: %s\n",
174 buf);
175 ret = 1;
176 }
177 continue;
178 }
179 else if (string == NULL)
180 {
181 regfree (&re);
182 puts ("FAIL regcomp unpexpectedly succeeded");
183 ret = 1;
184 continue;
185 }
186
187 if (regexec (&re, string, 20, rm, eflags))
188 {
189 for (i = 0; i < 20; ++i)
190 {
191 rm[i].rm_so = -1;
192 rm[i].rm_eo = -1;
193 }
194 }
195
196 regfree (&re);
197
198 for (i = 0; i < 20 && *p != '\0'; ++i)
199 {
200 int rm_so, rm_eo;
201
202 rm_so = strtol (p, &q, 10);
203 if (p == q)
204 break;
205 p = q;
206
207 rm_eo = strtol (p, &q, 10);
208 if (p == q)
209 break;
210 p = q;
211
212 if (rm[i].rm_so != rm_so || rm[i].rm_eo != rm_eo)
213 {
214 printf ("FAIL rm[%d] %d..%d != expected %d..%d\n",
215 i, rm[i].rm_so, rm[i].rm_eo, rm_so, rm_eo);
216 ret = 1;
217 break;
218 }
219 }
220 }
221
222 free (line);
223 fclose (f);
224 return ret;
225 }