xref: /freebsd/lib/libc/tests/locale/mblen_test.c (revision 1f4bcc459a76b7aa664f3fd557684cd0ba6da352)
1 /*-
2  * Copyright (c) 2002-2004 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 mblen(), as specified by IEEE Std. 1003.1-2001 and
29  * ISO/IEC 9899:1990.
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 __FBSDID("$FreeBSD$");
37 
38 #include <limits.h>
39 #include <locale.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 
44 #include <atf-c.h>
45 
46 ATF_TC_WITHOUT_HEAD(mblen_test);
47 ATF_TC_BODY(mblen_test, tc)
48 {
49 	char buf[MB_LEN_MAX + 1];
50 
51 	/*
52 	 * C/POSIX locale.
53 	 */
54 
55 	ATF_REQUIRE(MB_CUR_MAX == 1);
56 
57 	/* No shift states in C locale. */
58 	ATF_REQUIRE(mblen(NULL, 0) == 0);
59 
60 	/* Null wide character. */
61 	memset(buf, 0xcc, sizeof(buf));
62 	buf[0] = '\0';
63 	ATF_REQUIRE(mblen(buf, 1) == 0);
64 
65 	/* Latin letter A. */
66 	buf[0] = 'A';
67 	ATF_REQUIRE(mblen(buf, 1) == 1);
68 
69 	/* Incomplete character sequence. */
70 	buf[0] = '\0';
71 	ATF_REQUIRE(mblen(buf, 0) == -1);
72 	ATF_REQUIRE(mblen(NULL, 0) == 0);
73 
74 	/*
75 	 * Japanese (EUC) locale.
76 	 */
77 
78 	ATF_REQUIRE(strcmp(setlocale(LC_CTYPE, "ja_JP.eucJP"), "ja_JP.eucJP") == 0);
79 	ATF_REQUIRE(MB_CUR_MAX > 1);
80 
81 	/* No shift states in EUC. */
82 	ATF_REQUIRE(mblen(NULL, 0) == 0);
83 
84 	/* Null wide character. */
85 	memset(buf, 0xcc, sizeof(buf));
86 	buf[0] = '\0';
87 	ATF_REQUIRE(mblen(buf, 1) == 0);
88 
89 	/* Latin letter A. */
90 	buf[0] = 'A';
91 	ATF_REQUIRE(mblen(buf, 1) == 1);
92 
93 	/* Incomplete character sequence. */
94 	buf[0] = '\0';
95 	ATF_REQUIRE(mblen(buf, 0) == -1);
96 	ATF_REQUIRE(mblen(NULL, 0) == 0);
97 
98 	/* Incomplete character sequence (truncated double-byte). */
99 	memset(buf, 0xcc, sizeof(buf));
100 	buf[0] = 0xa3;
101 	buf[1] = 0x00;
102 	ATF_REQUIRE(mblen(buf, 1) == -1);
103 	ATF_REQUIRE(mblen(NULL, 0) == 0);
104 
105 	/* Same as above, but complete. */
106 	buf[1] = 0xc1;
107 	ATF_REQUIRE(mblen(buf, 2) == 2);
108 }
109 
110 ATF_TP_ADD_TCS(tp)
111 {
112 
113 	ATF_TP_ADD_TC(tp, mblen_test);
114 
115 	return (atf_no_error());
116 }
117