root/maint/gnulib/tests/unigbrk/test-u8-grapheme-breaks.c

/* */

DEFINITIONS

1. test_u8_grapheme_breaks
2. main

   1 /* Grapheme cluster breaks test.
   2    Copyright (C) 2010-2021 Free Software Foundation, Inc.
   3 
   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.
   8 
   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.
  13 
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16 
  17 /* Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. */
  18 
  19 #include <config.h>
  20 
  21 /* Specification. */
  22 #include <unigbrk.h>
  23 
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 
  28 #include "macros.h"
  29 
  30 static void
  31 test_u8_grapheme_breaks (const char *input, const char *expected)
     /*  */
  32 {
  33   const uint8_t *s = (const uint8_t *) input;
  34   size_t n = strlen (expected);
  35   char *breaks;
  36   size_t i;
  37 
  38   breaks = malloc (n);
  39   if (!breaks)
  40     abort ();
  41   memset (breaks, 0xcc, n);
  42 
  43   u8_grapheme_breaks (s, n, breaks);
  44   for (i = 0; i < n; i++)
  45     if (breaks[i] != (expected[i] == '#'))
  46       {
  47         size_t j;
  48 
  49         fprintf (stderr, "wrong grapheme breaks:\n");
  50 
  51         fprintf (stderr, "   input:");
  52         for (j = 0; j < n; j++)
  53           fprintf (stderr, " %02x", s[j]);
  54         putc ('\n', stderr);
  55 
  56         fprintf (stderr, "expected:");
  57         for (j = 0; j < n; j++)
  58           fprintf (stderr, "  %d", expected[j] == '#');
  59         putc ('\n', stderr);
  60 
  61         fprintf (stderr, "  actual:");
  62         for (j = 0; j < n; j++)
  63           fprintf (stderr, "  %d", breaks[j]);
  64         putc ('\n', stderr);
  65 
  66         abort ();
  67       }
  68 
  69   free (breaks);
  70 }
  71 
  72 int
  73 main (void)
     /*  */
  74 {
  75   /* Standalone 1-unit graphemes.  */
  76   test_u8_grapheme_breaks ("a", "#");
  77   test_u8_grapheme_breaks ("ab", "##");
  78   test_u8_grapheme_breaks ("abc", "###");
  79 
  80   /* Multi-unit, single code point graphemes. */
  81 #define HIRAGANA_A "\343\201\202" /* あ: Hiragana letter 'a'. */
  82   test_u8_grapheme_breaks (HIRAGANA_A, "#__");
  83   test_u8_grapheme_breaks (HIRAGANA_A"x", "#__#");
  84   test_u8_grapheme_breaks (HIRAGANA_A HIRAGANA_A, "#__#__");
  85 
  86   /* Combining accents. */
  87 #define GRAVE "\314\200"        /* Combining grave accent. */
  88 #define ACUTE "\314\201"        /* Combining acute accent. */
  89   test_u8_grapheme_breaks ("e"ACUTE, "#__");
  90   test_u8_grapheme_breaks ("e"ACUTE GRAVE, "#____");
  91   test_u8_grapheme_breaks ("e"ACUTE"x", "#__#");
  92   test_u8_grapheme_breaks ("e"ACUTE "e"ACUTE, "#__#__");
  93 
  94   return 0;
  95 }

/* */