1 /*
2 * Copyright © 2005-2020 Rich Felker
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23 #include <stdio.h>
24 #include <string.h>
25 #include <errno.h>
26 #include <limits.h>
27
28 #define TEST(r, f, x, m) ( \
29 ((r) = (f)) == (x) || \
30 (printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, #f, r, x), err++, 0) )
31
32 #define TEST_S(s, x, m) ( \
33 !strcmp((s),(x)) || \
34 (printf(__FILE__ ":%d: [%s] != [%s] (%s)\n", __LINE__, s, x, m), err++, 0) )
35
36 #define TEST_F(x) ( \
37 TEST(i, sscanf(# x, "%lf", &d), 1, "got %d fields, expected %d"), \
38 TEST(t, d, (double)x, "%g != %g") )
39
40 #pragma GCC diagnostic ignored "-Wpragmas"
41 #pragma GCC diagnostic ignored "-Wunknown-warning-option"
42 #pragma GCC diagnostic ignored "-Wunused-value"
43 #pragma GCC diagnostic ignored "-Woverflow"
44 #pragma GCC diagnostic ignored "-Wliteral-range"
45 #pragma GCC diagnostic ignored "-Wformat-extra-args"
46
47 #if defined(__PICOLIBC__) && !defined(TINY_STDIO) && __SIZEOF_DOUBLE__ != 8
48 #define NO_FLOATING_POINT
49 #endif
50
test_sscanf(void)51 int test_sscanf(void)
52 {
53 int i;
54 int err=0;
55 char a[100], b[100];
56 int x, y, z, u, v;
57 #ifdef _WANT_IO_PERCENT_B
58 int w;
59 #endif
60 double d, t;
61 // long lo[10];
62
63 TEST(i, sscanf("hello, world\n", "%s %s", a, b), 2, "only %d fields, expected %d");
64 TEST_S(a, "hello,", "");
65 TEST_S(b, "world", "");
66
67 TEST(i, sscanf("hello, world\n", "%[hel]%s", a, b), 2, "only %d fields, expected %d");
68 TEST_S(a, "hell", "");
69 TEST_S(b, "o,", "");
70
71 TEST(i, sscanf("hello, world\n", "%[hel] %s", a, b), 2, "only %d fields, expected %d");
72 TEST_S(a, "hell", "");
73 TEST_S(b, "o,", "");
74
75 #ifdef TINY_STDIO
76 a[8] = 'X';
77 a[9] = 0;
78 /* legacy stdio fails this test */
79 TEST(i, sscanf("hello, world\n", "%8c%8c", a, b), 1, "%d fields, expected %d");
80 TEST_S(a, "hello, wX", "");
81 #endif
82
83 TEST(i, sscanf("56789 0123 56a72", "%2d%d%*d %[0123456789]\n", &x, &y, a), 3, "only %d fields, expected %d");
84 TEST(i, x, 56, "%d != %d");
85 TEST(i, y, 789, "%d != %d");
86 TEST_S(a, "56", "");
87
88 TEST(i, sscanf("011 0x100 11 0x100 100", "%i %i %o %x %x\n", &x, &y, &z, &u, &v), 5, "only %d fields, expected %d");
89 TEST(i, x, 9, "%d != %d");
90 TEST(i, y, 256, "%d != %d");
91 TEST(i, z, 9, "%d != %d");
92 TEST(i, u, 256, "%d != %d");
93 TEST(i, v, 256, "%d != %d");
94
95 #pragma GCC diagnostic ignored "-Wformat"
96 #pragma GCC diagnostic ignored "-Wformat-extra-args"
97
98 #ifdef _WANT_IO_PERCENT_B
99 TEST(i, sscanf("011 0x100 0b101 11 100 101", "%i %i %i %o %x %b\n", &x, &y, &z, &u, &v, &w), 6, "only %d fields, expected %d");
100 TEST(i, x, 9, "%d != %d");
101 TEST(i, y, 256, "%d != %d");
102 TEST(i, z, 5, "%d != %d");
103 TEST(i, u, 9, "%d != %d");
104 TEST(i, v, 256, "%d != %d");
105 TEST(i, w, 5, "%d != %d");
106 #endif
107
108 TEST(i, sscanf("20 xyz", "%d %d\n", &x, &y), 1, "only %d fields, expected %d");
109 TEST(i, x, 20, "%d != %d");
110
111 TEST(i, sscanf("xyz", "%d\n", &x, &y), 0, "got %d fields, expected no match (%d)");
112
113 TEST(i, sscanf("", "%d\n", &x, &y), -1, "got %d fields, expected input failure (%d)");
114
115 TEST(i, sscanf(" 12345 6", "%2d%d%d", &x, &y, &z), 3, "only %d fields, expected %d");
116 TEST(i, x, 12, "%d != %d");
117 TEST(i, y, 345, "%d != %d");
118 TEST(i, z, 6, "%d != %d");
119
120 // tinystdio only has one ungetc spot, so it can't unparse numbers
121 // TEST(i, sscanf(" 0x12 0x34", "%5i%2i", &x, &y), 1, "got %d fields, expected %d");
122 // TEST(i, x, 0x12, "%d != %d");
123
124 (void) d;
125 (void) t;
126 #if !defined(NO_FLOATING_POINT) && defined(_IO_FLOAT_EXACT)
127 TEST_F(123);
128 TEST_F(123.0);
129 TEST_F(123.0e+0);
130 TEST_F(123.0e+4);
131 TEST_F(1.234e1234);
132 TEST_F(1.234e-1234);
133 TEST_F(1.234e56789);
134 TEST_F(1.234e-56789);
135 TEST_F(-0.5);
136 TEST_F(0.1);
137 TEST_F(0.2);
138 TEST_F(0.1e-10);
139 TEST_F(0x1234p56);
140
141 #ifndef __PICOLIBC__
142 /* both tinystdio and legacy stdio fail this test */
143 TEST(i, sscanf("10e", "%lf", &d), 0, "got %d fields, expected no match (%d)");
144 #endif
145 TEST(i, sscanf("", "%lf\n", &d), -1, "got %d fields, expected input failure (%d)");
146 #endif
147
148
149 return err;
150 }
151
152 #define TEST_NAME sscanf
153 #include "testcase.h"
154
