1 /* Verify the BIG5HKSCS outputs that generate 2 wchar_t's (Bug 25734).
2 Copyright (C) 2020-2021 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 <stdio.h>
20 #include <string.h>
21 #include <locale.h>
22 #include <wchar.h>
23 #include <support/check.h>
24 #include <support/support.h>
25
26 /* A few BIG5-HKSCS characters map in two unicode code points.
27 They are:
28 /x88/x62 => <U00CA><U0304>
29 /x88/x64 => <U00CA><U030C>
30 /x88/xa3 => <U00EA><U0304>
31 /x88/xa5 => <U00EA><U030C>
32 Each of these is special cased in iconvdata/big5hkscs.c.
33 This test ensures that we correctly reset the shift state after
34 outputting any of these characters. We do this by converting
35 each them followed by converting an ASCII character. If we fail
36 to reset the shift state (bug 25734) then we'll see the last
37 character in the queue output again. */
38
39 /* Each test has name, input bytes, and expected wide character
40 output. */
41 struct testdata {
42 const char *name;
43 const char input[3];
44 wchar_t expected[3];
45 };
46
47 /* In BIG5-HKSCS (2008) there are 4 characters that generate multiple
48 wide characters. */
49 struct testdata tests[4] = {
50 /* <H-8862>X => <U+00CA><U+0304>X */
51 { "<H-8862>", "\x88\x62\x58", { 0x00CA, 0x0304, 0x0058 } },
52 /* <H-8864>X => <U+00CA><U+030C>X */
53 { "<H-8864>", "\x88\x64\x58", { 0x00CA, 0x030C, 0x0058 } },
54 /* <H-88A3>X => <U+00EA><U+0304>X */
55 { "<H-88A3>", "\x88\xa3\x58", { 0x00EA, 0x0304, 0x0058 } },
56 /* <H-88A5>X => <U+00EA><U+030C>X */
57 { "<H-88A5>", "\x88\xa5\x58", { 0x00EA, 0x030C, 0x0058 } }
58 };
59
60 /* Each test is of the form:
61 - Translate first code sequence (two bytes)
62 - Translate second (zero bytes)
63 - Translate the third (one byte). */
64 static int
check_conversion(struct testdata test)65 check_conversion (struct testdata test)
66 {
67 int err = 0;
68 wchar_t wc;
69 mbstate_t st;
70 size_t ret;
71 const char *mbs = test.input;
72 int consumed = 0;
73 /* Input is always 3 bytes long. */
74 int inlen = 3;
75
76 memset (&st, 0, sizeof (st));
77 /* First conversion: Consumes first 2 bytes. */
78 ret = mbrtowc (&wc, mbs, inlen - consumed, &st);
79 if (ret != 2)
80 {
81 printf ("error: First conversion consumed only %zd bytes.\n", ret);
82 err++;
83 }
84 /* Advance the two consumed bytes. */
85 mbs += ret;
86 consumed += ret;
87 if (wc != test.expected[0])
88 {
89 printf ("error: Result of first conversion was wrong.\n");
90 err++;
91 }
92 /* Second conversion: Consumes 0 bytes. */
93 ret = mbrtowc (&wc, mbs, inlen - consumed, &st);
94 if (ret != 0)
95 {
96 printf ("error: Second conversion consumed only %zd bytes.\n", ret);
97 err++;
98 }
99 /* Advance the zero consumed bytes. */
100 mbs += ret;
101 consumed += ret;
102 if (wc != test.expected[1])
103 {
104 printf ("error: Result of second conversion was wrong.\n");
105 err++;
106 }
107 /* After the second conversion the state of the converter should be
108 in the initial state. It is in the initial state because the two
109 input BIG5-HKSCS bytes have been consumed and the 2 wchar_t's have
110 been output. */
111 if (mbsinit (&st) == 0)
112 {
113 printf ("error: Converter not in initial state.\n");
114 err++;
115 }
116 /* Third conversion: Consumes 1 byte (it's an ASCII character). */
117 ret = mbrtowc (&wc, mbs, inlen - consumed, &st);
118 if (ret != 1)
119 {
120 printf ("error: Third conversion consumed only %zd bytes.\n", ret);
121 err++;
122 }
123 /* Advance the one byte. */
124 mbs += ret;
125 consumed += ret;
126 if (wc != test.expected[2])
127 {
128 printf ("error: Result of third conversion was wrong.\n");
129 err++;
130 }
131 /* Return 0 if we saw no errors. */
132 return err;
133 }
134
135 static int
do_test(void)136 do_test (void)
137 {
138 int err = 0;
139 int ret;
140 /* Testing BIG5-HKSCS. */
141 xsetlocale (LC_ALL, "zh_HK.BIG5-HKSCS");
142
143 /* Run all the special conversions. */
144 for (int i = 0; i < (sizeof (tests) / sizeof (struct testdata)); i++)
145 {
146 printf ("Running test for %s\n", tests[i].name);
147 ret = check_conversion (tests[i]);
148 if (ret > 0)
149 printf ("Test %s failed.\n", tests[i].name);
150 err += ret;
151 }
152
153 /* Fail if any conversion had an error. */
154 if (err > 0)
155 FAIL_EXIT1 ("One or more conversions failed.");
156
157 return 0;
158 }
159
160 #include <support/test-driver.c>
161