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
21static 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
33void 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
46void 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
64void test_read_large_data()
65{
66	write_content();
67	check_content();
68	remove(TMP_FILE);
69}
70
71
72int 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