1 /* Copyright (C) 2008-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library 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 GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <stdarg.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <wchar.h>
23
24 #if __GLIBC_USE_DEPRECATED_SCANF
25 # error "This file should not be compiled with deprecated scanf"
26 #endif
27
28 #define FAIL() \
29 do { \
30 result = 1; \
31 printf ("test at line %d failed\n", __LINE__); \
32 } while (0)
33
34 static int __attribute__ ((format (scanf, 2, 3)))
35 xsscanf (const char *str, const char *fmt, ...)
36 {
37 va_list ap;
38 va_start (ap, fmt);
39 int ret = vsscanf (str, fmt, ap);
40 va_end (ap);
41 return ret;
42 }
43
44 static int __attribute__ ((format (scanf, 1, 2)))
45 xscanf (const char *fmt, ...)
46 {
47 va_list ap;
48 va_start (ap, fmt);
49 int ret = vscanf (fmt, ap);
50 va_end (ap);
51 return ret;
52 }
53
54 static int __attribute__ ((format (scanf, 2, 3)))
55 xfscanf (FILE *f, const char *fmt, ...)
56 {
57 va_list ap;
58 va_start (ap, fmt);
59 int ret = vfscanf (f, fmt, ap);
60 va_end (ap);
61 return ret;
62 }
63
64 int
65 main (void)
66 {
67 wchar_t *lsp;
68 char *sp;
69 float f;
70 double d;
71 char c[8];
72 int result = 0;
73
74 if (xsscanf (" 0.25s x", "%e%3c", &f, c) != 2)
75 FAIL ();
76 else if (f != 0.25 || memcmp (c, "s x", 3) != 0)
77 FAIL ();
78 if (xsscanf (" 1.25s x", "%ms%2c", &sp, c) != 2)
79 FAIL ();
80 else
81 {
82 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
83 FAIL ();
84 memset (sp, 'x', sizeof "1.25s");
85 free (sp);
86 }
87 if (xsscanf (" 2.25s x", "%las%2c", &d, c) != 2)
88 FAIL ();
89 else if (d != 2.25 || memcmp (c, " x", 2) != 0)
90 FAIL ();
91 if (xsscanf (" 3.25S x", "%4mS%3c", &lsp, c) != 2)
92 FAIL ();
93 else
94 {
95 if (wcscmp (lsp, L"3.25") != 0 || memcmp (c, "S x", 3) != 0)
96 FAIL ();
97 memset (lsp, 'x', sizeof L"3.25");
98 free (lsp);
99 }
100 if (xsscanf ("4.25[0-9.] x", "%m[0-9.]%8c", &sp, c) != 2)
101 FAIL ();
102 else
103 {
104 if (strcmp (sp, "4.25") != 0 || memcmp (c, "[0-9.] x", 8) != 0)
105 FAIL ();
106 memset (sp, 'x', sizeof "4.25");
107 free (sp);
108 }
109 if (xsscanf ("5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2)
110 FAIL ();
111 else if (d != 5.25 || memcmp (c, " x", 2) != 0)
112 FAIL ();
113
114 const char *tmpdir = getenv ("TMPDIR");
115 if (tmpdir == NULL || tmpdir[0] == '\0')
116 tmpdir = "/tmp";
117
118 char fname[strlen (tmpdir) + sizeof "/tst-scanf16.XXXXXX"];
119 sprintf (fname, "%s/tst-scanf16.XXXXXX", tmpdir);
120
121 /* Create a temporary file. */
122 int fd = mkstemp (fname);
123 if (fd == -1)
124 FAIL ();
125
126 FILE *fp = fdopen (fd, "w+");
127 if (fp == NULL)
128 FAIL ();
129 else
130 {
131 if (fputs (" 1.25s x", fp) == EOF)
132 FAIL ();
133 if (fseek (fp, 0, SEEK_SET) != 0)
134 FAIL ();
135 if (xfscanf (fp, "%ms%2c", &sp, c) != 2)
136 FAIL ();
137 else
138 {
139 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
140 FAIL ();
141 memset (sp, 'x', sizeof "1.25s");
142 free (sp);
143 }
144
145 if (freopen (fname, "r", stdin) == NULL)
146 FAIL ();
147 else
148 {
149 if (xscanf ("%ms%2c", &sp, c) != 2)
150 FAIL ();
151 else
152 {
153 if (strcmp (sp, "1.25s") != 0 || memcmp (c, " x", 2) != 0)
154 FAIL ();
155 memset (sp, 'x', sizeof "1.25s");
156 free (sp);
157 }
158 }
159
160 fclose (fp);
161 }
162
163 remove (fname);
164
165 return result;
166 }