1 | /* Simple test of putwc in the C locale. |
2 | Copyright (C) 2000-2022 Free Software Foundation, Inc. |
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 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <error.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <wchar.h> |
24 | |
25 | static const char outname[] = OBJPFX "tst_putwc.temp" ; |
26 | |
27 | /* Prototype for our test function. */ |
28 | int do_test (void); |
29 | #define TEST_FUNCTION do_test () |
30 | |
31 | /* This defines the `main' function and some more. */ |
32 | #include <test-skeleton.c> |
33 | |
34 | int |
35 | do_test (void) |
36 | { |
37 | const wchar_t str[] = L"This is a test of putwc\n" ; |
38 | wchar_t buf[100]; |
39 | size_t n = 0; |
40 | FILE *fp; |
41 | int res = 0; |
42 | |
43 | add_temp_file (name: outname); |
44 | |
45 | fp = fopen (outname, "w+" ); |
46 | if (fp == NULL) |
47 | error (EXIT_FAILURE, errno, format: "cannot open temporary file" ); |
48 | |
49 | for (n = 0; str[n] != L'\0'; ++n) |
50 | putwc (str[n], fp); |
51 | |
52 | /* First try reading after rewinding. */ |
53 | rewind (fp); |
54 | |
55 | wmemset (buf, L'\0', sizeof (buf) / sizeof (buf[0])); |
56 | n = 0; |
57 | while (! feof (stream: fp) && n < sizeof (buf) - 1) |
58 | { |
59 | buf[n] = getwc (stream: fp); |
60 | if (buf[n] == WEOF) |
61 | break; |
62 | ++n; |
63 | } |
64 | buf[n] = L'\0'; |
65 | |
66 | if (wcscmp (s1: buf, s2: L"This is a test of putwc\n" ) != 0) |
67 | { |
68 | puts (s: "first comparison failed" ); |
69 | res = 1; |
70 | } |
71 | |
72 | /* Now close the file, open it again, and read again. */ |
73 | if (fclose (fp) != 0) |
74 | { |
75 | printf (format: "failure during fclose: %m\n" ); |
76 | res = 1; |
77 | } |
78 | |
79 | fp = fopen (outname, "r" ); |
80 | if (fp == NULL) |
81 | { |
82 | printf (format: "cannot reopen file: %m\n" ); |
83 | return 1; |
84 | } |
85 | |
86 | /* We can remove the file now. */ |
87 | remove (outname); |
88 | |
89 | wmemset (buf, L'\0', sizeof (buf) / sizeof (buf[0])); |
90 | n = 0; |
91 | while (! feof (stream: fp) && n < sizeof (buf) - 1) |
92 | { |
93 | buf[n] = getwc (stream: fp); |
94 | if (buf[n] == WEOF) |
95 | break; |
96 | ++n; |
97 | } |
98 | buf[n] = L'\0'; |
99 | |
100 | if (wcscmp (s1: buf, s2: L"This is a test of putwc\n" ) != 0) |
101 | { |
102 | puts (s: "second comparison failed" ); |
103 | res = 1; |
104 | } |
105 | |
106 | if (fclose (fp) != 0) |
107 | { |
108 | printf (format: "failure during fclose: %m\n" ); |
109 | res = 1; |
110 | } |
111 | |
112 | /* Next test: write a bit more than a few bytes. */ |
113 | fp = fopen (outname, "w" ); |
114 | if (fp == NULL) |
115 | error (EXIT_FAILURE, errno, format: "cannot open temporary file" ); |
116 | |
117 | for (n = 0; n < 4098; ++n) |
118 | putwc (n & 255, fp); |
119 | |
120 | fclose (fp); |
121 | |
122 | return res; |
123 | } |
124 | |