fribidi_remove_bidi_marks (3) Linux Manual Page

fribidi_remove_bidi_marks – remove bidi marks out of an string

Synopsis

#include <fribidi.h>

extern FriBidiStrIndex fribidi_remove_bidi_marks
(
       FriBidiChar *str,

       const FriBidiStrIndex len,

       FriBidiStrIndex *positions_to_this,

       FriBidiStrIndex *position_from_this_list,

       FriBidiLevel *embedding_levels

);

Parameters

FriBidiChar *str

Input string to clean.

const FriBidiStrIndex len

Input string length.

FriBidiStrIndex *positions_to_this

List mapping positions to the order used in str.

FriBidiStrIndex *position_from_this_list

List mapping positions from the order used in str.

FriBidiLevel *embedding_levels

List of embedding levels.

Description

This function removes the bidi and boundary-neutral marks out of an string and the accompanying lists. It implements rule X9 of the Unicode Bidirectional Algorithm available at http://www.unicode.org/reports/tr9/#X9, with the exception that it removes U+200E LEFT-TO-RIGHT MARK and U+200F RIGHT-TO-LEFT MARK too.

If any of the input lists are NULL, the list is skipped. If str is the visual string, then positions_to_this is positions_L_to_V and position_from_this_list is positions_V_to_L; if str is the logical string, the other way. Moreover, the position maps should be filled with valid entries.

A position map pointing to a removed character is filled with -1. By the way, you should not use embedding_levels if str is visual string.

For best results this function should be run on a whole paragraph, not lines; but feel free to do otherwise if you know what you are doing.

Returns

New length of the string, or -1 if an error occurred (memory allocation failure most probably).

See Also

fribidi_shape_arabic(3), fribidi_get_par_direction(3), fribidi_get_par_embedding_levels_ex(3), fribidi_reorder_line(3), fribidi_get_bidi_type(3), fribidi_get_bidi_types(3), fribidi_get_bidi_type_name(3), fribidi_debug_status(3), fribidi_set_debug(3), fribidi_charset_to_unicode(3), fribidi_unicode_to_charset(3), fribidi_parse_charset(3), fribidi_mirroring_status(3), fribidi_set_mirroring(3), fribidi_reorder_nsm_status(3), fribidi_set_reorder_nsm(3), fribidi_log2vis_get_embedding_levels(3), fribidi_get_type(3), fribidi_get_type_internal(3), fribidi_get_par_embedding_levels(3), fribidi_join_arabic(3), fribidi_get_joining_type(3), fribidi_get_joining_types(3), fribidi_get_joining_type_name(3), fribidi_get_mirror_char(3), fribidi_shape_mirroring(3), fribidi_get_bracket(3), fribidi_get_bracket_types(3), fribidi_shape(3)