glib/gunibreak.c

   1 /* gunibreak.c - line break properties
   2  *
   3  *  Copyright 2000 Red Hat, Inc.
   4  *
   5  * The Gnome Library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * The Gnome 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 Gnome Library; see the file COPYING.LIB.  If not,
  17  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  *   Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "glib.h"
  24 #include "gunibreak.h"
  25
  26 #include <stdlib.h>
  27
  28
  29 #define TPROP(Page, Char) \
  30   ((break_property_table[Page] >= G_UNICODE_MAX_TABLE_INDEX) \
  31    ? (break_property_table[Page] - G_UNICODE_MAX_TABLE_INDEX) \
  32    : (break_property_data[break_property_table[Page]][Char]))
  33
  34 #define PROP(Char) (((Char) > (G_UNICODE_LAST_CHAR)) ? G_UNICODE_UNASSIGNED : TPROP ((Char) >> 8, (Char) & 0xff))
  35
  36 /**
  37  * g_unichar_break_type:
  38  * @c: a Unicode character
  39  *
  40  * Determines the break type of @c. @c should be a Unicode character
  41  * (to derive a character from UTF-8 encoded text, use
  42  * g_utf8_get_char()). The break type is used to find word and line
  43  * breaks ("text boundaries"), Pango implements the Unicode boundary
  44  * resolution algorithms and normally you would use a function such
  45  * as pango_break() instead of caring about break types yourself.
  46  *
  47  * Return value: the break type of @c
  48  **/
  49 GUnicodeBreakType
  50 g_unichar_break_type (gunichar c)
  51 {
  52   return PROP (c);
  53 }