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4573c6b0 | 1 | /* Verify that fseek/ftell combination works for wide chars. |
f7a9f785 | 2 | Copyright (C) 2012-2016 Free Software Foundation, Inc. |
4573c6b0 SP |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <locale.h> | |
22 | #include <errno.h> | |
23 | #include <wchar.h> | |
24 | #include <unistd.h> | |
25 | #include <string.h> | |
26 | ||
c23de0aa | 27 | #include <support/temp_file.h> |
4573c6b0 SP |
28 | |
29 | static int | |
30 | do_seek_end (FILE *fp) | |
31 | { | |
32 | long save; | |
33 | ||
34 | if (fputws (L"abc\n", fp) == -1) | |
35 | { | |
36 | printf ("do_seek_end: fputws: %s\n", strerror (errno)); | |
37 | return 1; | |
38 | } | |
39 | ||
40 | save = ftell (fp); | |
41 | rewind (fp); | |
42 | ||
43 | if (fseek (fp, 0, SEEK_END) == -1) | |
44 | { | |
45 | printf ("do_seek_end: fseek: %s\n", strerror (errno)); | |
46 | return 1; | |
47 | } | |
48 | ||
49 | if (save != ftell (fp)) | |
50 | { | |
51 | printf ("save = %ld, ftell = %ld\n", save, ftell (fp)); | |
52 | return 1; | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | int | |
59 | do_seek_set (FILE *fp) | |
60 | { | |
61 | long save1, save2; | |
62 | ||
63 | if (fputws (L"ゅう\n", fp) == -1) | |
64 | { | |
65 | printf ("seek_set: fputws(1): %s\n", strerror (errno)); | |
66 | return 1; | |
67 | } | |
68 | ||
69 | save1 = ftell (fp); | |
70 | ||
71 | if (fputws (L"ゅう\n", fp) == -1) | |
72 | { | |
73 | printf ("seek_set: fputws(2): %s\n", strerror (errno)); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | save2 = ftell (fp); | |
78 | ||
79 | if (fputws (L"ゅう\n", fp) == -1) | |
80 | { | |
81 | printf ("seek_set: fputws(3): %s\n", strerror (errno)); | |
82 | return 1; | |
83 | } | |
84 | ||
85 | if (fseek (fp, save1, SEEK_SET) == -1) | |
86 | { | |
87 | printf ("seek_set: fseek(1): %s\n", strerror (errno)); | |
88 | return 1; | |
89 | } | |
90 | ||
91 | if (save1 != ftell (fp)) | |
92 | { | |
93 | printf ("save1 = %ld, ftell = %ld\n", save1, ftell (fp)); | |
94 | return 1; | |
95 | } | |
96 | ||
97 | if (fseek (fp, save2, SEEK_SET) == -1) | |
98 | { | |
99 | printf ("seek_set: fseek(2): %s\n", strerror (errno)); | |
100 | return 1; | |
101 | } | |
102 | ||
103 | if (save2 != ftell (fp)) | |
104 | { | |
105 | printf ("save2 = %ld, ftell = %ld\n", save2, ftell (fp)); | |
106 | return 1; | |
107 | } | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
112 | static int | |
113 | do_test (void) | |
114 | { | |
115 | if (setlocale (LC_ALL, "ja_JP.UTF-8") == NULL) | |
116 | { | |
117 | printf ("Cannot set ja_JP.UTF-8 locale.\n"); | |
118 | exit (1); | |
119 | } | |
120 | ||
121 | /* Retain messages in English. */ | |
122 | if (setlocale (LC_MESSAGES, "en_US.ISO-8859-1") == NULL) | |
123 | { | |
124 | printf ("Cannot set LC_MESSAGES to en_US.ISO-8859-1 locale.\n"); | |
125 | exit (1); | |
126 | } | |
127 | ||
128 | int ret = 0; | |
129 | char *filename; | |
130 | int fd = create_temp_file ("tst-fseek.out", &filename); | |
131 | ||
132 | if (fd == -1) | |
133 | return 1; | |
134 | ||
135 | FILE *fp = fdopen (fd, "w+"); | |
136 | if (fp == NULL) | |
137 | { | |
138 | printf ("seek_set: fopen: %s\n", strerror (errno)); | |
139 | close (fd); | |
140 | return 1; | |
141 | } | |
142 | ||
143 | if (do_seek_set (fp)) | |
144 | { | |
145 | printf ("SEEK_SET test failed\n"); | |
146 | ret = 1; | |
147 | } | |
148 | ||
149 | /* Reopen the file. */ | |
150 | fclose (fp); | |
151 | fp = fopen (filename, "w+"); | |
152 | if (fp == NULL) | |
153 | { | |
154 | printf ("seek_end: fopen: %s\n", strerror (errno)); | |
155 | return 1; | |
156 | } | |
157 | ||
158 | if (do_seek_end (fp)) | |
159 | { | |
160 | printf ("SEEK_END test failed\n"); | |
161 | ret = 1; | |
162 | } | |
163 | ||
164 | fclose (fp); | |
165 | ||
166 | return ret; | |
167 | } | |
168 | ||
c23de0aa | 169 | #include <support/test-driver.c> |