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/* FriBidi
* fribidi-joining.h - Arabic joining algorithm
*
* Authors:
* Behdad Esfahbod, 2004
*
* Copyright (C) 2004 Sharif FarsiWeb, Inc
* Copyright (C) 2004 Behdad Esfahbod
*
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA
*
* For licensing issues, contact <fribidi.license@gmail.com>.
*/
#ifndef _FRIBIDI_JOINING_H
#define _FRIBIDI_JOINING_H
#include "fribidi-common.h"
#include "fribidi-types.h"
#include "fribidi-bidi-types.h"
#include "fribidi-joining-types.h"
#include "fribidi-begindecls.h"
#define fribidi_join_arabic FRIBIDI_NAMESPACE(join_arabic)
/* fribidi_join_arabic - do Arabic joining
*
* This function does the Arabic joining algorithm. Means, given Arabic
* joining types of the characters in ar_props (don't worry,
* FriBidiJoiningType can be casted to FriBidiArabicProp automagically), this
* function modifies this properties to grasp the effect of neighboring
* characters. You probably need this information later to do Arabic shaping.
*
* This function implements rules R1 to R7 inclusive (all rules) of the Arabic
* Cursive Joining algorithm of the Unicode standard as available at
* http://www.unicode.org/versions/Unicode4.0.0/ch08.pdf#G7462. It also
* interacts correctly with the bidirection algorithm as defined in Section
* 3.5 Shaping of the Unicode Bidirectional Algorithm available at
* http://www.unicode.org/reports/tr9/#Shaping.
*
* There are a few macros defined in fribidi-joining-types.h for querying the
* Arabic properties computed by this function.
*/
FRIBIDI_ENTRY void fribidi_join_arabic (
const FriBidiCharType *bidi_types, /* input list of bidi types as
returned by
fribidi_get_bidi_types() */
const FriBidiStrIndex len, /* input string length */
const FriBidiLevel *embedding_levels, /* input list of embedding
levels, as returned by
fribidi_get_par_embedding_levels */
FriBidiArabicProp *ar_props /* Arabic properties to analyze, initialized by
joining types, as returned by
fribidi_get_joining_types */
);
#include "fribidi-enddecls.h"
#endif /* !_FRIBIDI_JOINING_H */
/* Editor directions:
* vim:textwidth=78:tabstop=8:shiftwidth=2:autoindent:cindent
*/
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