1 /* Test and measure strcasestr functions.
2 Copyright (C) 2010-2021 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 #define TEST_MAIN
20 #define TEST_NAME "strcasestr"
21 #include "test-string.h"
22
23
24 #define STRCASESTR simple_strcasestr
25 #define NO_ALIAS
26 #define __strncasecmp strncasecmp
27 #define __strnlen strnlen
28 #include "strcasestr.c"
29
30
31 static char *
stupid_strcasestr(const char * s1,const char * s2)32 stupid_strcasestr (const char *s1, const char *s2)
33 {
34 ssize_t s1len = strlen (s1);
35 ssize_t s2len = strlen (s2);
36
37 if (s2len > s1len)
38 return NULL;
39
40 for (ssize_t i = 0; i <= s1len - s2len; ++i)
41 {
42 size_t j;
43 for (j = 0; j < s2len; ++j)
44 if (tolower (s1[i + j]) != tolower (s2[j]))
45 break;
46 if (j == s2len)
47 return (char *) s1 + i;
48 }
49
50 return NULL;
51 }
52
53
54 typedef char *(*proto_t) (const char *, const char *);
55
56 IMPL (stupid_strcasestr, 0)
57 IMPL (simple_strcasestr, 0)
58 IMPL (strcasestr, 1)
59
60
61 static int
check_result(impl_t * impl,const char * s1,const char * s2,char * exp_result)62 check_result (impl_t *impl, const char *s1, const char *s2,
63 char *exp_result)
64 {
65 char *result = CALL (impl, s1, s2);
66 if (result != exp_result)
67 {
68 error (0, 0, "Wrong result in function %s %s %s", impl->name,
69 (result == NULL) ? "(null)" : result,
70 (exp_result == NULL) ? "(null)" : exp_result);
71 ret = 1;
72 return -1;
73 }
74 return 0;
75 }
76
77 static void
do_one_test(impl_t * impl,const char * s1,const char * s2,char * exp_result)78 do_one_test (impl_t *impl, const char *s1, const char *s2, char *exp_result)
79 {
80 if (check_result (impl, s1, s2, exp_result) < 0)
81 return;
82 }
83
84
85 static void
do_test(size_t align1,size_t align2,size_t len1,size_t len2,int fail)86 do_test (size_t align1, size_t align2, size_t len1, size_t len2,
87 int fail)
88 {
89 char *s1 = (char *) (buf1 + align1);
90 char *s2 = (char *) (buf2 + align2);
91
92 static const char d[] = "1234567890abcxyz";
93 #define dl (sizeof (d) - 1)
94 char *ss2 = s2;
95 for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
96 {
97 size_t t = l > dl ? dl : l;
98 ss2 = mempcpy (ss2, d, t);
99 }
100 s2[len2] = '\0';
101
102 if (fail)
103 {
104 char *ss1 = s1;
105 for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0)
106 {
107 size_t t = l > dl ? dl : l;
108 memcpy (ss1, d, t);
109 ++ss1[len2 > 7 ? 7 : len2 - 1];
110 ss1 += t;
111 }
112 }
113 else
114 {
115 memset (s1, '0', len1);
116 for (size_t i = 0; i < len2; ++i)
117 s1[len1 - len2 + i] = toupper (s2[i]);
118 }
119 s1[len1] = '\0';
120
121 FOR_EACH_IMPL (impl, 0)
122 do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2);
123 }
124
125 static void
check1(void)126 check1 (void)
127 {
128 const char s1[] = "AOKB";
129 const char s2[] = "OK";
130 char *exp_result;
131
132 exp_result = stupid_strcasestr (s1, s2);
133 FOR_EACH_IMPL (impl, 0)
134 check_result (impl, s1, s2, exp_result);
135 }
136
137 static int
test_main(void)138 test_main (void)
139 {
140 test_init ();
141
142 check1 ();
143
144 printf ("%23s", "");
145 FOR_EACH_IMPL (impl, 0)
146 printf ("\t%s", impl->name);
147 putchar ('\n');
148
149 for (size_t klen = 2; klen < 32; ++klen)
150 for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen)
151 {
152 do_test (0, 0, hlen, klen, 0);
153 do_test (0, 0, hlen, klen, 1);
154 do_test (0, 3, hlen, klen, 0);
155 do_test (0, 3, hlen, klen, 1);
156 do_test (0, 9, hlen, klen, 0);
157 do_test (0, 9, hlen, klen, 1);
158 do_test (0, 15, hlen, klen, 0);
159 do_test (0, 15, hlen, klen, 1);
160
161 do_test (3, 0, hlen, klen, 0);
162 do_test (3, 0, hlen, klen, 1);
163 do_test (3, 3, hlen, klen, 0);
164 do_test (3, 3, hlen, klen, 1);
165 do_test (3, 9, hlen, klen, 0);
166 do_test (3, 9, hlen, klen, 1);
167 do_test (3, 15, hlen, klen, 0);
168 do_test (3, 15, hlen, klen, 1);
169
170 do_test (9, 0, hlen, klen, 0);
171 do_test (9, 0, hlen, klen, 1);
172 do_test (9, 3, hlen, klen, 0);
173 do_test (9, 3, hlen, klen, 1);
174 do_test (9, 9, hlen, klen, 0);
175 do_test (9, 9, hlen, klen, 1);
176 do_test (9, 15, hlen, klen, 0);
177 do_test (9, 15, hlen, klen, 1);
178
179 do_test (15, 0, hlen, klen, 0);
180 do_test (15, 0, hlen, klen, 1);
181 do_test (15, 3, hlen, klen, 0);
182 do_test (15, 3, hlen, klen, 1);
183 do_test (15, 9, hlen, klen, 0);
184 do_test (15, 9, hlen, klen, 1);
185 do_test (15, 15, hlen, klen, 0);
186 do_test (15, 15, hlen, klen, 1);
187 }
188
189 do_test (0, 0, page_size - 1, 16, 0);
190 do_test (0, 0, page_size - 1, 16, 1);
191
192 return ret;
193 }
194
195 #include <support/test-driver.c>
196