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maint: Run 'make update-copyright'
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 01 Jan 2019 00:25:11 +0100
parents 10eb9086bea0
children
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1 /* Next grapheme cluster length test.
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2 Copyright (C) 2010-2019 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify it
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5 under the terms of the GNU Lesser General Public License as published
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6 by the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 Lesser General Public License for more details.
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13
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14 You should have received a copy of the GNU Lesser General Public License
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15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
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16
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17 /* Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. */
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18
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19 #include <config.h>
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20
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21 /* Specification. */
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22 #include <unigbrk.h>
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23
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24 #include <stdio.h>
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25 #include <stdlib.h>
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26
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27 #include "macros.h"
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28
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29 static void
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30 test_u8_grapheme_next (const char *input, size_t n, size_t len)
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31 {
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32 const uint8_t *s = (const uint8_t *) input;
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33 const uint8_t *next = u8_grapheme_next (s, s + n);
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34 if (next != s + len)
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35 {
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36 size_t i;
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37
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38 if (next == NULL)
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39 fputs ("u8_grapheme_next returned NULL", stderr);
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40 else
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41 fprintf (stderr, "u8_grapheme_next skipped %zu bytes", next - s);
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42 fprintf (stderr, ", expected %zu:\n", len);
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43 for (i = 0; i < n; i++)
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44 fprintf (stderr, " %02x", s[i]);
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45 putc ('\n', stderr);
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46 abort ();
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47 }
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48 }
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49
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50 int
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51 main (void)
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52 {
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53 static const uint8_t s[] = "abc";
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54
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55 /* Empty string. */
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56 ASSERT (u8_grapheme_next (NULL, NULL) == NULL);
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57 ASSERT (u8_grapheme_next (s, s) == NULL);
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58
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59 /* Standalone 1-unit graphemes. */
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60 test_u8_grapheme_next ("a", 1, 1);
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61 test_u8_grapheme_next ("ab", 2, 1);
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62 test_u8_grapheme_next ("abc", 3, 1);
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63
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64 /* Multi-unit, single code point graphemes. */
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65 #define HIRAGANA_A "\343\201\202" /* あ: Hiragana letter 'a'. */
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66 test_u8_grapheme_next (HIRAGANA_A, 3, 3);
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67 test_u8_grapheme_next (HIRAGANA_A"x", 4, 3);
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68 test_u8_grapheme_next (HIRAGANA_A HIRAGANA_A, 6, 3);
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69
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70 /* Combining accents. */
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71 #define GRAVE "\314\200" /* Combining grave accent. */
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72 #define ACUTE "\314\201" /* Combining acute accent. */
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73 test_u8_grapheme_next ("e"ACUTE, 3, 3);
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74 test_u8_grapheme_next ("e"ACUTE GRAVE, 5, 5);
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75 test_u8_grapheme_next ("e"ACUTE"x", 4, 3);
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76 test_u8_grapheme_next ("e"ACUTE "e"ACUTE, 6, 3);
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77
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78 return 0;
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79 }