1fribidi_get_par_direction(3) Programmer's Manual fribidi_get_par_direction(3)
2
6 fribidi_get_par_direction - get base paragraph direction
7
9 #include <fribidi.h>
10 FriBidiParType fribidi_get_par_direction
12 (
13 const FriBidiCharType *bidi_types,
14 const FriBidiStrIndex len
15 );
16
18 const FriBidiCharType *bidi_types
19 Input list of bidi types as returned by
20 fribidi_get_bidi_types().
21 Possible values for a const FriBidiCharType are as follows:
23 FRIBIDI_TYPE_LTR Left-To-Right letter.
24 FRIBIDI_TYPE_RTL Right-To-Left letter.
25 FRIBIDI_TYPE_AL Arabic Letter.
26 FRIBIDI_TYPE_EN European Numeral.
27 FRIBIDI_TYPE_AN Arabic Numeral.
28 FRIBIDI_TYPE_ES European number Separator.
29 FRIBIDI_TYPE_ET European number Terminator.
30 FRIBIDI_TYPE_CS Common Separator.
31 FRIBIDI_TYPE_NSM Non Spacing Mark.
32 FRIBIDI_TYPE_BN Boundary Neutral.
33 FRIBIDI_TYPE_BS Block Separator.
34 FRIBIDI_TYPE_SS Segment Separator.
35 FRIBIDI_TYPE_WS WhiteSpace.
36 FRIBIDI_TYPE_ON Other Neutral.
37 FRIBIDI_TYPE_LRE Left-to-Right Embedding.
38 FRIBIDI_TYPE_RLE Right-to-Left Embedding.
39 FRIBIDI_TYPE_LRO Left-to-Right Override.
40 FRIBIDI_TYPE_RLO Right-to-Left Override.
41 FRIBIDI_TYPE_PDF Pop Directional Flag.
42 const FriBidiStrIndex len
44 Input string length.
45
47 This function finds the base direction of a single paragraph, as
48 defined by rule P2 of the Unicode Bidirectional Algorithm available at
49 http://www.unicode.org/reports/tr9/#P2.
50 You typically do not need this function as fribidi_get_par_embed‐
52 ding_levels() knows how to compute base direction itself, but you may
53 need this to implement a more sophisticated paragraph direction han‐
54 dling. Note that you can pass more than a paragraph to this function
55 and the direction of the first non-neutral paragraph is returned, which
56 is a very good heuristic to set direction of the neutral paragraphs at
57 the beginning of text. For other neutral paragraphs, you better use
58 the direction of the previous paragraph.
59
61 Base pargraph direction. No weak paragraph direction is returned, only
62 LTR, RTL, or ON.
63 Possible values for a FriBidiParType are as follows:
65 FRIBIDI_PAR_LTR Left-To-Right paragraph.
66 FRIBIDI_PAR_RTL Right-To-Left paragraph.
67 FRIBIDI_PAR_ON DirectiOn-Neutral paragraph.
68 FRIBIDI_PAR_WLTR Weak Left To Right paragraph.
69 FRIBIDI_PAR_WRTL Weak Right To Left paragraph.
70
72 fribidi_charset_to_unicode(3), fribidi_unicode_to_charset(3),
73 fribidi_parse_charset(3), fribidi_shape_arabic(3),
74 fribidi_get_par_embedding_levels(3), fribidi_reorder_line(3),
75 fribidi_get_bidi_type(3), fribidi_get_bidi_types(3),
76 fribidi_get_bidi_type_name(3), fribidi_debug_status(3), fribidi_mirror‐
77 ing_status(3), fribidi_set_mirroring(3), fribidi_reorder_nsm_status(3),
78 fribidi_set_reorder_nsm(3), fribidi_log2vis_get_embedding_levels(3),
79 fribidi_get_type(3), fribidi_get_type_internal(3),
80 fribidi_remove_bidi_marks(3), fribidi_log2vis(3), fribidi_join_ara‐
81 bic(3), fribidi_get_joining_type(3), fribidi_get_joining_types(3),
82 fribidi_get_joining_type_name(3), fribidi_get_mirror_char(3),
83 fribidi_shape_mirroring(3), fribidi_shape(3)
84GNU FriBidi 0.19.2 30 January 2006 fribidi_get_par_direction(3)