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/* FriBidi
* fribidi-bidi.h - bidirectional algorithm
*
* $Id: fribidi-bidi.h,v 1.1.1.1 2004-04-25 18:47:57 behdad Exp $
* $Author: behdad $
* $Date: 2004-04-25 18:47:57 $
* $Revision: 1.1.1.1 $
* $Source: /home/behdad/src/fdo/fribidi/togit/git/../fribidi/fribidi2/lib/fribidi-bidi.h,v $
*
* Authors:
* Behdad Esfahbod, 2001, 2002, 2004
* Dov Grobgeld, 1999, 2000
*
* Copyright (C) 2004 Sharif FarsiWeb, Inc
* Copyright (C) 2001,2002 Behdad Esfahbod
* Copyright (C) 1999,2000 Dov Grobgeld
*
* This 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 2.1 of the License, or (at your option) any later version.
*
* This 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 this library, in a file named COPYING; 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>.
*/
#ifndef _FRIBIDI_BIDI_H
#define _FRIBIDI_BIDI_H
#include "fribidi-common.h"
#include "fribidi-types.h"
#include "fribidi-bidi-types.h"
#include "fribidi-begindecls.h"
#define fribidi_log2vis FRIBIDI_NAMESPACE(log2vis)
/* fribidi_log2vis - get visual string
*
* This function converts the logical input string to the visual output
* strings as specified by the Unicode Bidirectional Algorithm. As a side
* effect it also generates mapping lists between the two strings, and the
* list of embedding levels as defined by the algorithm. If any of the the
* lists are passed as NULL, the list is ignored and not filled.
*
* Returns: Non-zero if it was successful, or zero if any error occured.
*/
FRIBIDI_ENTRY fribidi_boolean fribidi_log2vis (
const FriBidiChar *str, /* input logical string */
FriBidiStrIndex len, /* input string length */
FriBidiCharType *pbase_dir, /* requested and resolved paragraph
* base direction */
FriBidiChar *visual_str, /* output visual string */
FriBidiStrIndex *position_L_to_V_list, /* output mapping from logical to
* visual string positions */
FriBidiStrIndex *position_V_to_L_list, /* output mapping from visual string
* back to the logical string
* positions */
FriBidiLevel *embedding_level_list /* output list of embedding levels */
);
#define fribidi_log2vis_get_embedding_levels FRIBIDI_NAMESPACE(log2vis_get_embedding_levels)
/* fribidi_log2vis_get_embedding_levels - get bidi embedding levels
*
* This function finds the bidi embedding levels of a single paragraph,
* as defined by the Unicode Bidirectional Algorithm.
*
* Returns: Non-zero if it was successful, or zero if any error occured.
*/
FRIBIDI_ENTRY fribidi_boolean fribidi_log2vis_get_embedding_levels (
const FriBidiChar *str, /* input logical string */
FriBidiStrIndex len, /* input string length */
FriBidiCharType *pbase_dir, /* requested and resolved paragraph
* base direction */
FriBidiLevel *embedding_level_list /* output list of embedding levels */
);
#define fribidi_remove_bidi_marks FRIBIDI_NAMESPACE(remove_bidi_marks)
/* fribidi_remove_bidi_marks - remove bidi marks out an string
*
* This function removes the bidi marks out of an string and the
* accompanying lists. If any of the input lists are NULL, the list is
* skipped.
*
* Bugs: It is not clear that if the input string is a logical, or visual
* string. It is know to have problems handling position lists. In short,
* it should be avoided.
*
* Returns: New length of the string.
*/
FRIBIDI_ENTRY FriBidiStrIndex fribidi_remove_bidi_marks (
FriBidiChar *str,
FriBidiStrIndex length,
FriBidiStrIndex *position_to_this_list,
FriBidiStrIndex *position_from_this_list,
FriBidiLevel *embedding_level_list
);
#include "fribidi-enddecls.h"
#endif /* !_FRIBIDI_BIDI_H */
/* Editor directions:
* vim:textwidth=78:tabstop=8:shiftwidth=2:autoindent:cindent
*/
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