xref: /freebsd/lib/libc/tests/locale/wcstombs_test.c (revision 22cf89c938886d14f5796fc49f9f020c23ea8eaf)
1 /*-
2  * Copyright (c) 2002 Tim J. Robbins
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /*
28  * Test program for wcstombs(), as specified by IEEE Std. 1003.1-2001 and
29  * ISO/IEC 9899:1999.
30  *
31  * The function is tested with both the "C" ("POSIX") LC_CTYPE setting and
32  * "ja_JP.eucJP". Other encodings are not tested.
33  */
34 
35 #include <sys/cdefs.h>
36 #include <errno.h>
37 #include <limits.h>
38 #include <locale.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <wchar.h>
43 
44 #include <atf-c.h>
45 
46 ATF_TC_WITHOUT_HEAD(wcstombs_test);
47 ATF_TC_BODY(wcstombs_test, tc)
48 {
49 	wchar_t srcbuf[128];
50 	char dstbuf[128];
51 
52 	/* C/POSIX locale. */
53 
54 	/* Simple null terminated string. */
55 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
56 	wcscpy(srcbuf, L"hello");
57 	memset(dstbuf, 0xcc, sizeof(dstbuf));
58 	ATF_REQUIRE(wcstombs(dstbuf, srcbuf, sizeof(dstbuf)) == 5);
59 	ATF_REQUIRE(strcmp(dstbuf, "hello") == 0);
60 	ATF_REQUIRE((unsigned char)dstbuf[6] == 0xcc);
61 
62 	/* Not enough space in destination buffer. */
63 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
64 	wcscpy(srcbuf, L"hello");
65 	memset(dstbuf, 0xcc, sizeof(dstbuf));
66 	ATF_REQUIRE(wcstombs(dstbuf, srcbuf, 4) == 4);
67 	ATF_REQUIRE(memcmp(dstbuf, "hell", 4) == 0);
68 	ATF_REQUIRE((unsigned char)dstbuf[5] == 0xcc);
69 
70 	/* Null terminated string, internal dest. buffer */
71 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
72 	wcscpy(srcbuf, L"hello");
73 	ATF_REQUIRE(wcstombs(NULL, srcbuf, sizeof(dstbuf)) == 5);
74 
75 	/* Null terminated string, internal state. */
76 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
77 	wcscpy(srcbuf, L"hello");
78 	memset(dstbuf, 0xcc, sizeof(dstbuf));
79 	ATF_REQUIRE(wcstombs(dstbuf, srcbuf, sizeof(dstbuf)) == 5);
80 	ATF_REQUIRE(strcmp(dstbuf, "hello") == 0);
81 	ATF_REQUIRE((unsigned char)dstbuf[6] == 0xcc);
82 
83 	/* Null terminated string, internal state, internal dest. buffer. */
84 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
85 	wcscpy(srcbuf, L"hello");
86 	ATF_REQUIRE(wcstombs(NULL, srcbuf, 0) == 5);
87 
88 	/* Empty source buffer. */
89 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
90 	srcbuf[0] = L'\0';
91 	memset(dstbuf, 0xcc, sizeof(dstbuf));
92 	ATF_REQUIRE(wcstombs(dstbuf, srcbuf, sizeof(dstbuf)) == 0);
93 	ATF_REQUIRE(dstbuf[0] == L'\0');
94 
95 	/* Zero length destination buffer. */
96 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
97 	wcscpy(srcbuf, L"hello");
98 	memset(dstbuf, 0xcc, sizeof(dstbuf));
99 	ATF_REQUIRE(wcstombs(dstbuf, srcbuf, 0) == 0);
100 	ATF_REQUIRE((unsigned char)dstbuf[0] == 0xcc);
101 
102 	/*
103 	 * Japanese (EUC) locale.
104 	 */
105 
106 	ATF_REQUIRE(strcmp(setlocale(LC_CTYPE, "ja_JP.eucJP"), "ja_JP.eucJP") == 0);
107 	ATF_REQUIRE(MB_CUR_MAX > 1);
108 
109 	wmemset(srcbuf, 0xcc, sizeof(srcbuf) / sizeof(*srcbuf));
110 	srcbuf[0] = 0xA3C1;
111 	srcbuf[1] = 0x0020;
112 	srcbuf[2] = 0x0042;
113 	srcbuf[3] = 0x0020;
114 	srcbuf[4] = 0xA3C3;
115 	srcbuf[5] = 0x0000;
116 	memset(dstbuf, 0xcc, sizeof(dstbuf));
117 	ATF_REQUIRE(wcstombs(dstbuf, srcbuf, sizeof(dstbuf)) == 7);
118 	ATF_REQUIRE(strcmp(dstbuf, "\xA3\xC1 B \xA3\xC3") == 0);
119 	ATF_REQUIRE((unsigned char)dstbuf[8] == 0xcc);
120 }
121 
122 ATF_TP_ADD_TCS(tp)
123 {
124 
125 	ATF_TP_ADD_TC(tp, wcstombs_test);
126 
127 	return (atf_no_error());
128 }
129