97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/* fribidi-mirroring.c - get mirrored character
|
|
*
|
|
* Copyright (C) 2004 Sharif FarsiWeb, Inc
|
|
* Copyright (C) 2001, 2002, 2004 Behdad Esfahbod
|
|
* Copyright (C) 1999, 2000 Dov Grobgeld
|
|
*
|
|
* This file is part of GNU FriBidi.
|
|
*
|
|
* GNU FriBidi 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 2.1
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* GNU FriBidi 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 GNU FriBidi; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* For licensing issues, contact <license@farsiweb.info> or write to
|
|
* Sharif FarsiWeb, Inc., PO Box 13445-389, Tehran, Iran.
|
|
*/
|
|
/* $Id: fribidi-mirroring.c,v 1.15 2005/11/03 01:39:01 behdad Exp $
|
|
* $Author: behdad $
|
|
* $Date: 2005/11/03 01:39:01 $
|
|
* $Revision: 1.15 $
|
|
* $Source: /cvs/fribidi/fribidi2/lib/fribidi-mirroring.c,v $
|
|
*
|
|
* Author(s):
|
|
* Behdad Esfahbod, 2001, 2002, 2004
|
|
* Dov Grobgeld, 1999, 2000
|
|
*/
|
|
|
|
#include "common.h"
|
|
|
|
#include <fribidi-mirroring.h>
|
|
|
|
#include "mirroring.tab.i"
|
|
|
|
FRIBIDI_ENTRY fribidi_boolean
|
|
fribidi_get_mirror_char (
|
|
/* input */
|
|
FriBidiChar ch,
|
|
/* output */
|
|
FriBidiChar *mirrored_ch
|
|
)
|
|
{
|
|
register FriBidiChar result;
|
|
result = FRIBIDI_GET_MIRRORING (ch);
|
|
if (mirrored_ch)
|
|
*mirrored_ch = result;
|
|
return ch != result ? true : false;
|
|
}
|
|
|
|
|
|
FRIBIDI_ENTRY void
|
|
fribidi_shape_mirroring (
|
|
/* input */
|
|
const FriBidiLevel *embedding_levels,
|
|
const FriBidiStrIndex len,
|
|
/* input and output */
|
|
FriBidiChar *str
|
|
)
|
|
{
|
|
register FriBidiStrIndex i;
|
|
|
|
DBG ("in fribidi_shape_mirroring");
|
|
|
|
if UNLIKELY
|
|
(len == 0 || !str) return;
|
|
|
|
fribidi_assert (embedding_levels);
|
|
|
|
/* L4. Mirror all characters that are in odd levels and have mirrors. */
|
|
for (i = len - 1; i >= 0; i--)
|
|
if (FRIBIDI_LEVEL_IS_RTL (embedding_levels[i]))
|
|
{
|
|
FriBidiChar mirrored_ch;
|
|
|
|
if (fribidi_get_mirror_char (str[i], &mirrored_ch))
|
|
str[i] = mirrored_ch;
|
|
}
|
|
}
|
|
|
|
/* Editor directions:
|
|
* Local Variables:
|
|
* mode: c
|
|
* c-basic-offset: 2
|
|
* indent-tabs-mode: t
|
|
* tab-width: 8
|
|
* End:
|
|
* vim: textwidth=78: autoindent: cindent: shiftwidth=2: tabstop=8:
|
|
*/
|