glib/gunibreak.c

/* gunibreak.c - line break properties
 *
 *  Copyright 2000 Red Hat, Inc.
 *
 * The Gnome Library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * The Gnome Library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the Gnome Library; see the file COPYING.LIB.  If not,
 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *   Boston, MA 02111-1307, USA.
 */

#include "glib.h"
#include "gunibreak.h"

#include <config.h>

#include <stdlib.h>


/* We cheat a bit and cast type values to (char *).  We detect these
   using the &0xff trick.  */
#define TPROP(Page, Char) \
  (((GPOINTER_TO_INT(break_property_table[Page]) & 0xff) == GPOINTER_TO_INT(break_property_table[Page])) \
   ? GPOINTER_TO_INT(break_property_table[Page]) \
   : (break_property_table[Page][Char]))

#define PROP(Char) (((Char) > (G_UNICODE_LAST_CHAR)) ? G_UNICODE_UNASSIGNED : TPROP ((Char) >> 8, (Char) & 0xff))

/**
 * g_unichar_break_type:
 * @c: a Unicode character
 * 
 * Determines the break type of @c. @c should be a Unicode character
 * (to derive a character from UTF-8 encoded text, use
 * g_utf8_get_char()). The break type is used to find word and line
 * breaks ("text boundaries"), Pango implements the Unicode boundary
 * resolution alogorithms and normally you would use a function such
 * as pango_break() instead of caring about break types yourself.
 * 
 * Return value: break type
 **/
GUnicodeBreakType
g_unichar_break_type (gunichar c)
{
  return PROP (c);
}