1 /* Grapheme cluster length test.
2 Copyright (C) 2010-2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as published
6 by the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. */
29 test_u16_grapheme_len (size_t len, ...)
40 int unit = va_arg (args, int);
43 else if (n >= sizeof s / sizeof *s)
50 retval = u16_grapheme_len (s, n);
55 fprintf (stderr, "u16_grapheme_len counted %zu units, expected %zu:",
57 for (i = 0; i < n; i++)
58 fprintf (stderr, " %04x", s[i]);
69 test_u16_grapheme_len (0, -1);
71 /* Standalone 1-unit graphemes. */
72 test_u16_grapheme_len (1, 'a', -1);
73 test_u16_grapheme_len (1, 'a', 'b', -1);
74 test_u16_grapheme_len (1, 'a', 'b', 'c', -1);
76 /* Multi-unit, single code point graphemes. */
77 #define HIRAGANA_A 0x3042 /* あ: Hiragana letter 'a'. */
78 test_u16_grapheme_len (1, HIRAGANA_A, -1);
79 test_u16_grapheme_len (1, HIRAGANA_A, 'x', -1);
80 test_u16_grapheme_len (1, HIRAGANA_A, HIRAGANA_A, -1);
82 /* Combining accents. */
83 #define GRAVE 0x0300 /* Combining grave accent. */
84 #define ACUTE 0x0301 /* Combining acute accent. */
85 test_u16_grapheme_len (2, 'e', ACUTE, -1);
86 test_u16_grapheme_len (3, 'e', ACUTE, GRAVE, -1);
87 test_u16_grapheme_len (2, 'e', ACUTE, 'x', -1);
88 test_u16_grapheme_len (2, 'e', ACUTE, 'e', ACUTE, -1);
90 /* Surrogate pairs. */
91 test_u16_grapheme_len (2, 0xd83d, 0xde10, -1); /* 😐: neutral face. */
92 test_u16_grapheme_len (3, 0xd83d, 0xde10, GRAVE, -1);