1 #include <stdio.h>
2 #include <string.h>
3 #include <errno.h>
4 #include <limits.h>
5 #include <unistd.h>
6 #include "test.h"
7
8 #define CONTENT "0.1234567\n"
9 #define EXPECT 0.1234567
10 #define TMP_FILE "/data/local/tmp/fscanf_test.txt"
11 #define TOTAL 515
12
13 #define TEST(r, f, x, m) ( \
14 errno=0, ((r) = (f)) == (x) || \
15 (t_error("%s failed (" m ")\n", #f, r, x, strerror(errno)), 0) )
16
17 #define TEST_S(s, x, m) ( \
18 !strcmp((s),(x)) || \
19 (t_error("[%s] != [%s] (%s)\n", s, x, m), 0) )
20
writetemp(const char * data)21 static FILE *writetemp(const char *data)
22 {
23 FILE *f = tmpfile();
24 if (!f) return 0;
25 if (!fwrite(data, strlen(data), 1, f)) {
26 fclose(f);
27 return 0;
28 }
29 rewind(f);
30 return f;
31 }
32
write_content()33 void write_content()
34 {
35 FILE *fp;
36 fp = fopen(TMP_FILE, "w");
37 if (fp == NULL) {
38 t_error("FAIL %s create failed!\n", TMP_FILE);
39 }
40 for (size_t i = 0; i < TOTAL; i++) {
41 fwrite(CONTENT, sizeof(char), strlen(CONTENT), fp);
42 }
43 fclose(fp);
44 }
45
check_content()46 void check_content()
47 {
48 FILE *fp;
49 int res;
50 double value = 0;
51 fp = fopen(TMP_FILE, "r");
52 if (fp == NULL) {
53 t_error("FAIL %s open failed!\n", TMP_FILE);
54 }
55 for (size_t i = 0; i < TOTAL; i++) {
56 res = fscanf(fp, "%lf", &value);
57 if (res != 1 || value != EXPECT) {
58 t_error("FAIL: fscanf expect %lf but get %lf, index=%d\n", EXPECT, value, i);
59 }
60 }
61 fclose(fp);
62 }
63
test_read_large_data()64 void test_read_large_data()
65 {
66 write_content();
67 check_content();
68 remove(TMP_FILE);
69 }
70
71
main(void)72 int main(void)
73 {
74 int i, x, y;
75 double u;
76 char a[100], b[100];
77 FILE *f;
78 int p[2];
79
80 TEST(i, pipe(p), 0, "failed to open pipe %d!=%d (%s)");
81 TEST(i, !(f = fdopen(p[0], "rb")), 0, "failed to fdopen pipe %d!=%d (%s)");
82
83 if (!f) {
84 close(p[0]);
85 close(p[1]);
86 return 1;
87 }
88
89 TEST(i, write(p[1], "hello, world\n", 13), 13, "write error %d!=%d (%s)");
90 TEST(i, fscanf(f, "%s %[own]", a, b), 2, "got %d fields, expected %d");
91 TEST_S(a, "hello,", "wrong result for %s");
92 TEST_S(b, "wo", "wrong result for %[own]");
93 TEST(i, fgetc(f), 'r', "'%c' != '%c') (%s)");
94
95 TEST(i, write(p[1], " 0x12 0x34", 10), 10, "write error %d!=%d (%s)");
96 TEST(i, fscanf(f, "ld %5i%2i", &x, &y), 1, "got %d fields, expected %d");
97 TEST(i, x, 0x12, "%d != %d");
98 TEST(i, fgetc(f), '3', "'%c' != '%c'");
99
100 fclose(f);
101 close(p[1]);
102
103 TEST(i, !!(f=writetemp(" 42")), 1, "failed to make temp file");
104 if (f) {
105 x=y=-1;
106 TEST(i, fscanf(f, " %n%*d%n", &x, &y), 0, "%d != %d");
107 TEST(i, x, 6, "%d != %d");
108 TEST(i, y, 8, "%d != %d");
109 TEST(i, ftell(f), 8, "%d != %d");
110 TEST(i, !!feof(f), 1, "%d != %d");
111 fclose(f);
112 }
113
114 TEST(i, !!(f=writetemp("[abc123]....x")), 1, "failed to make temp file");
115 if (f) {
116 x=y=-1;
117 TEST(i, fscanf(f, "%10[^]]%n%10[].]%n", a, &x, b, &y), 2, "%d != %d");
118 TEST_S(a, "[abc123", "wrong result for %[^]]");
119 TEST_S(b, "]....", "wrong result for %[].]");
120 TEST(i, x, 7, "%d != %d");
121 TEST(i, y, 12, "%d != %d");
122 TEST(i, ftell(f), 12, "%d != %d");
123 TEST(i, feof(f), 0, "%d != %d");
124 TEST(i, fgetc(f), 'x', "%d != %d");
125 fclose(f);
126 }
127
128 /* Comment it because musl parse "0x1p" to "0x1" now rather than treat it as abnormal format.
129 TEST(i, !!(f=writetemp("0x1p 12")), 1, "failed to make temp file");
130 if (f) {
131 x=y=-1;
132 u=-1;
133 TEST(i, fscanf(f, "%lf%n %d", &u, &x, &y), 0, "%d != %d");
134 TEST(u, u, -1.0, "%g != %g");
135 TEST(i, x, -1, "%d != %d");
136 TEST(i, y, -1, "%d != %d");
137 TEST(i, ftell(f), 4, "%d != %d");
138 TEST(i, feof(f), 0, "%d != %d");
139 TEST(i, fgetc(f), ' ', "%d != %d");
140 rewind(f);
141 TEST(i, fgetc(f), '0', "%d != %d");
142 TEST(i, fgetc(f), 'x', "%d != %d");
143 TEST(i, fscanf(f, "%lf%n%c %d", &u, &x, a, &y), 3, "%d != %d");
144 TEST(u, u, 1.0, "%g != %g");
145 TEST(i, x, 1, "%d != %d");
146 TEST(i, a[0], 'p', "%d != %d");
147 TEST(i, y, 12, "%d != %d");
148 TEST(i, ftell(f), 7, "%d != %d");
149 TEST(i, !!feof(f), 1, "%d != %d");
150 fclose(f);
151 }
152 */
153
154 TEST(i, !!(f=writetemp("0x.1p4 012")), 1, "failed to make temp file");
155 if (f) {
156 x=y=-1;
157 u=-1;
158 TEST(i, fscanf(f, "%lf%n %i", &u, &x, &y), 2, "%d != %d");
159 TEST(u, u, 1.0, "%g != %g");
160 TEST(i, x, 6, "%d != %d");
161 TEST(i, y, 10, "%d != %d");
162 TEST(i, ftell(f), 13, "%d != %d");
163 TEST(i, !!feof(f), 1, "%d != %d");
164 fclose(f);
165 }
166
167 TEST(i, !!(f=writetemp("0xx")), 1, "failed to make temp file");
168 if (f) {
169 x=y=-1;
170 TEST(i, fscanf(f, "%x%n", &x, &y), 0, "%d != %d");
171 TEST(i, x, -1, "%d != %d");
172 TEST(i, y, -1, "%d != %d");
173 TEST(i, ftell(f), 2, "%d != %d");
174 TEST(i, feof(f), 0, "%d != %d");
175 fclose(f);
176 }
177
178 test_read_large_data();
179
180 return t_status;
181 }
182