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75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
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/* FriBidi
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* fribidi-joining.h - Arabic joining algorithm
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*
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* Authors:
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* Behdad Esfahbod, 2004
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*
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* Copyright (C) 2004 Sharif FarsiWeb, Inc
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* Copyright (C) 2004 Behdad Esfahbod
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library, in a file named COPYING; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA
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*
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* For licensing issues, contact <fribidi.license@gmail.com>.
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*/
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#ifndef _FRIBIDI_JOINING_H
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#define _FRIBIDI_JOINING_H
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#include "fribidi-common.h"
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#include "fribidi-types.h"
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#include "fribidi-bidi-types.h"
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#include "fribidi-joining-types.h"
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#include "fribidi-begindecls.h"
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/* fribidi_join_arabic - do Arabic joining
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*
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* This function does the Arabic joining algorithm. Means, given Arabic
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* joining types of the characters in ar_props (don't worry,
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* FriBidiJoiningType can be casted to FriBidiArabicProp automagically), this
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* function modifies this properties to grasp the effect of neighboring
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* characters. You probably need this information later to do Arabic shaping.
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*
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* This function implements rules R1 to R7 inclusive (all rules) of the Arabic
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* Cursive Joining algorithm of the Unicode standard as available at
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* http://www.unicode.org/versions/Unicode4.0.0/ch08.pdf#G7462. It also
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* interacts correctly with the bidirection algorithm as defined in Section
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* 3.5 Shaping of the Unicode Bidirectional Algorithm available at
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* http://www.unicode.org/reports/tr9/#Shaping.
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*
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* There are a few macros defined in fribidi-joining-types.h for querying the
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* Arabic properties computed by this function.
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*/
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FRIBIDI_ENTRY void fribidi_join_arabic (
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const FriBidiCharType *bidi_types, /* input list of bidi types as
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returned by
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fribidi_get_bidi_types() */
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const FriBidiStrIndex len, /* input string length */
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const FriBidiLevel *embedding_levels, /* input list of embedding
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levels, as returned by
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fribidi_get_par_embedding_levels */
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FriBidiArabicProp *ar_props /* Arabic properties to analyze, initialized by
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joining types, as returned by
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fribidi_get_joining_types */
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);
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#include "fribidi-enddecls.h"
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#endif /* !_FRIBIDI_JOINING_H */
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/* Editor directions:
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* vim:textwidth=78:tabstop=8:shiftwidth=2:autoindent:cindent
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*/
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