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129 lines
4.7 KiB
C
129 lines
4.7 KiB
C
/* FriBidi
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* fribidi.h - Unicode bidirectional and Arabic joining/shaping algorithms
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*
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* Author:
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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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*
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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_H
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#define _FRIBIDI_H
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#include "fribidi-common.h"
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#include "fribidi-unicode.h"
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#include "fribidi-types.h"
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#include "fribidi-flags.h"
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#include "fribidi-bidi-types.h"
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#include "fribidi-bidi.h"
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#include "fribidi-joining-types.h"
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#include "fribidi-joining.h"
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#include "fribidi-mirroring.h"
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#include "fribidi-brackets.h"
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#include "fribidi-arabic.h"
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#include "fribidi-shape.h"
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#include "fribidi-begindecls.h"
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/* fribidi_remove_bidi_marks - remove bidi marks out of an string
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*
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* This function removes the bidi and boundary-neutral marks out of an string
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* and the accompanying lists. It implements rule X9 of the Unicode
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* Bidirectional Algorithm available at
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* http://www.unicode.org/reports/tr9/#X9, with the exception that it removes
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* U+200E LEFT-TO-RIGHT MARK and U+200F RIGHT-TO-LEFT MARK too.
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*
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* If any of the input lists are NULL, the list is skipped. If str is the
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* visual string, then positions_to_this is positions_L_to_V and
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* position_from_this_list is positions_V_to_L; if str is the logical
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* string, the other way. Moreover, the position maps should be filled with
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* valid entries.
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*
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* A position map pointing to a removed character is filled with \(mi1. By the
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* way, you should not use embedding_levels if str is visual string.
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*
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* For best results this function should be run on a whole paragraph, not
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* lines; but feel free to do otherwise if you know what you are doing.
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*
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* Returns: New length of the string, or \(mi1 if an error occurred (memory
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* allocation failure most probably).
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*/
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FRIBIDI_ENTRY FriBidiStrIndex
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fribidi_remove_bidi_marks (
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FriBidiChar *str, /* input string to clean */
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const FriBidiStrIndex len, /* input string length */
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FriBidiStrIndex *positions_to_this, /* list mapping positions to the
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order used in str */
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FriBidiStrIndex *position_from_this_list, /* list mapping positions from the
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order used in str */
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FriBidiLevel *embedding_levels /* list of embedding levels */
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);
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/* fribidi_log2vis - get visual string
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*
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* This function converts the logical input string to the visual output
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* strings as specified by the Unicode Bidirectional Algorithm. As a side
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* effect it also generates mapping lists between the two strings, and the
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* list of embedding levels as defined by the algorithm.
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*
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* If NULL is passed as any of the the lists, the list is ignored and not
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* filled.
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*
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* Note that this function handles one-line paragraphs. For multi-
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* paragraph texts it is necessary to first split the text into
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* separate paragraphs and then carry over the resolved pbase_dir
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* between the subsequent invocations.
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*
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* Returns: Maximum level found plus one, or zero if any error occurred
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* (memory allocation failure most probably).
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*/
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FRIBIDI_ENTRY FriBidiLevel fribidi_log2vis (
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const FriBidiChar *str, /* input logical string */
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const FriBidiStrIndex len, /* input string length */
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FriBidiParType *pbase_dir, /* requested and resolved paragraph
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* base direction */
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FriBidiChar *visual_str, /* output visual string */
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FriBidiStrIndex *positions_L_to_V, /* output mapping from logical to
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* visual string positions */
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FriBidiStrIndex *positions_V_to_L, /* output mapping from visual string
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* back to the logical string
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* positions */
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FriBidiLevel *embedding_levels /* output list of embedding levels */
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);
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/* End of functions */
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#ifdef FRIBIDI_NO_DEPRECATED
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#else
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# include "fribidi-deprecated.h"
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#endif /* !FRIBIDI_NO_DEPRECATED */
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/* An string containing the version information of the library. */
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FRIBIDI_ENTRY FRIBIDI_EXTERN const char *fribidi_version_info;
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#include "fribidi-enddecls.h"
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#endif /* !_FRIBIDI_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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