1#include <errno.h>
2#include <stdio.h>
3#include <stdlib.h>
4#include <unistd.h>
5#include <wchar.h>
6
7
8static const struct
9{
10 const char *enc;
11 const char *data;
12 size_t datalen;
13 const wchar_t *expected;
14 size_t expectedlen;
15} tests[] =
16 {
17 { "UCS-4LE", "a\0\0\0b\0\0\0", 8, L"ab", 2 },
18 { "UCS-4BE", "\0\0\0a\0\0\0b", 8, L"ab", 2 },
19 };
20#define ntests (sizeof (tests) / sizeof (tests[0]))
21
22
23static int do_test (void);
24#define TEST_FUNCTION do_test ()
25
26static void prepare (void);
27#define PREPARE(argc, argv) prepare ();
28
29#include "../test-skeleton.c"
30
31
32static int fd;
33static char *tmpname;
34
35
36static void
37prepare (void)
38{
39 fd = create_temp_file (base: "tst-fopenloc2", filename: &tmpname);
40 if (fd == -1)
41 {
42 puts (s: "cannot open temp file");
43 exit (1);
44 }
45}
46
47
48static int
49do_test (void)
50{
51 for (int i = 0; i < ntests; ++i)
52 {
53 if (ftruncate (fd: fd, length: 0) != 0)
54 {
55 printf (format: "ftruncate in round %d failed\n", i + 1);
56 return 1;
57 }
58
59 if (TEMP_FAILURE_RETRY (write (fd, tests[i].data, tests[i].datalen))
60 != tests[i].datalen)
61 {
62 printf (format: "write in round %d failed\n", i + 1);
63 return 1;
64 }
65
66 if (lseek (fd: fd, offset: 0, SEEK_SET) != 0)
67 {
68 printf (format: "lseek in round %d failed\n", i + 1);
69 return 1;
70 }
71
72 char *ccs;
73 if (asprintf (ptr: &ccs, fmt: "r,ccs=%s", tests[i].enc) == -1)
74 {
75 printf (format: "asprintf in round %d failed\n", i + 1);
76 return 1;
77 }
78
79 FILE *fp = fopen (tmpname, ccs);
80 if (fp == NULL)
81 {
82 printf (format: "fopen in round %d failed\n", i + 1);
83 return 1;
84 }
85
86#define LINELEN 100
87 wchar_t line[LINELEN];
88 if (fgetws (ws: line, LINELEN, stream: fp) != line)
89 {
90 printf (format: "fgetws in round %d failed\n", i + 1);
91 return 1;
92 }
93
94 if (wcslen (s: line) != tests[i].expectedlen)
95 {
96 printf (format: "round %d: expected length %zu, got length %zu\n",
97 i + 1, tests[i].expectedlen, wcslen (s: line));
98 return 1;
99 }
100
101 if (wcscmp (s1: tests[i].expected, s2: line) != 0)
102 {
103 printf (format: "round %d: expected L\"%ls\", got L\"%ls\"\n",
104 i + 1, tests[i].expected, line);
105 return 1;
106 }
107
108 fclose (fp);
109
110 free (ptr: ccs);
111 }
112
113 close (fd: fd);
114
115 return 0;
116}
117

source code of glibc/libio/tst-fopenloc2.c