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d0a74159 | 1 | /* Test c16rtomb handling of surrogate pairs (DR#488, bug 23794). |
04277e02 | 2 | Copyright (C) 2018-2019 Free Software Foundation, Inc. |
d0a74159 JM |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
d0a74159 JM |
18 | |
19 | #include <errno.h> | |
20 | #include <locale.h> | |
21 | #include <stdio.h> | |
22 | #include <string.h> | |
23 | #include <uchar.h> | |
24 | #include <wchar.h> | |
25 | #include <array_length.h> | |
26 | #include <support/check.h> | |
27 | ||
28 | static int | |
29 | do_test (void) | |
30 | { | |
31 | TEST_VERIFY_EXIT (setlocale (LC_ALL, "de_DE.UTF-8") != NULL); | |
32 | /* Test conversions of surrogate pairs. */ | |
33 | for (char32_t c = 0x10000; c <= 0x10ffff; c += 0x123) | |
34 | { | |
35 | char32_t c_pos = c - 0x10000; | |
36 | char16_t c_hi = (c_pos >> 10) + 0xd800; | |
37 | char16_t c_lo = (c_pos & 0x3ff) + 0xdc00; | |
38 | printf ("testing U+0x%08x (0x%x 0x%x)\n", | |
39 | (unsigned int) c, (unsigned int) c_hi, (unsigned int) c_lo); | |
40 | char buf[16] = { 0 }; | |
41 | size_t ret_hi = c16rtomb (buf, c_hi, NULL); | |
42 | TEST_COMPARE (ret_hi, 0); | |
43 | size_t ret_lo = c16rtomb (buf, c_lo, NULL); | |
44 | TEST_COMPARE (ret_lo, 4); | |
45 | wchar_t wc = 0; | |
46 | size_t ret_wc = mbrtowc (&wc, buf, 4, NULL); | |
47 | TEST_COMPARE (ret_wc, 4); | |
48 | TEST_COMPARE (wc, (wchar_t) c); | |
49 | } | |
50 | /* Test errors for invalid conversions. */ | |
51 | static const char16_t err_cases[][2] = | |
52 | { | |
53 | /* High surrogate followed by non-surrogate. */ | |
54 | { 0xd800, 0x1 }, | |
55 | /* High surrogate followed by another high surrogate. */ | |
56 | { 0xd800, 0xd800 }, | |
57 | /* Low surrogate not following high surrogate. */ | |
58 | { 0xdc00, 0 } | |
59 | }; | |
60 | for (size_t i = 0; i < array_length (err_cases); i++) | |
61 | { | |
62 | char16_t c_hi = err_cases[i][0]; | |
63 | char16_t c_lo = err_cases[i][1]; | |
64 | printf ("testing error case: 0x%x 0x%x\n", (unsigned int) c_hi, | |
65 | (unsigned int) c_lo); | |
66 | c16rtomb (NULL, 0, NULL); | |
67 | char buf[16] = { 0 }; | |
68 | errno = 0; | |
69 | size_t ret_hi = c16rtomb (buf, c_hi, NULL); | |
70 | if (c_lo == 0) | |
71 | { | |
72 | /* Unmatched low surrogate in first place. */ | |
73 | TEST_COMPARE (ret_hi, (size_t) -1); | |
74 | TEST_COMPARE (errno, EILSEQ); | |
75 | } | |
76 | else | |
77 | { | |
78 | /* High surrogate; error in second place. */ | |
79 | TEST_COMPARE (ret_hi, 0); | |
80 | errno = 0; | |
81 | size_t ret_lo = c16rtomb (buf, c_lo, NULL); | |
82 | TEST_COMPARE (ret_lo, (size_t) -1); | |
83 | TEST_COMPARE (errno, EILSEQ); | |
84 | } | |
85 | } | |
86 | return 0; | |
87 | } | |
88 | ||
89 | #include <support/test-driver.c> |