1/* fribidi-brackets.c - get bracketed character
2 *
3 * Copyright (C) 2004 Sharif FarsiWeb, Inc
4 * Copyright (C) 2001, 2002, 2004 Behdad Esfahbod
5 * Copyright (C) 1999, 2000, 2017 Dov Grobgeld
6 *
7 * This file is part of GNU FriBidi.
8 *
9 * GNU FriBidi is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundation; either version 2.1
12 * of the License, or (at your option) any later version.
13 *
14 * GNU FriBidi is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with GNU FriBidi; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 * For licensing issues, contact <fribidi.license@gmail.com> or write to
24 * Sharif FarsiWeb, Inc., PO Box 13445-389, Tehran, Iran.
25 */
26/*
27 * Author(s):
28 * Behdad Esfahbod, 2001, 2002, 2004
29 * Dov Grobgeld, 1999, 2000, 2017
30 */
31
32#include "common.h"
33
34#include <fribidi-brackets.h>
35
36#include "brackets.tab.i"
37#include "brackets-type.tab.i"
38#include <stdio.h>
39
40#define FRIBIDI_TYPE_BRACKET_OPEN 2
41
42FRIBIDI_ENTRY FriBidiBracketType
43fribidi_get_bracket (
44 /* input */
45 FriBidiChar ch
46)
47{
48 FriBidiBracketType bracket_type;
49 register uint8_t char_type = FRIBIDI_GET_BRACKET_TYPE (ch);
50
51 /* The bracket type from the table may be:
52 0 - Not a bracket
53 1 - a bracket
54 2 - closing.
55
56 This will be recodeded into the FriBidiBracketType as having a
57 bracket_id = 0 if the character is not a bracket.
58 */
59 fribidi_boolean is_open = false;
60
61 if (char_type == 0)
62 bracket_type = FRIBIDI_NO_BRACKET;
63 else
64 {
65 is_open = (char_type & FRIBIDI_TYPE_BRACKET_OPEN) != 0;
66 bracket_type = FRIBIDI_GET_BRACKETS (ch) & FRIBIDI_BRACKET_ID_MASK;
67 }
68 if (is_open)
69 bracket_type |= FRIBIDI_BRACKET_OPEN_MASK;
70
71 return bracket_type;
72}
73
74FRIBIDI_ENTRY void
75fribidi_get_bracket_types (
76 /* input */
77 const FriBidiChar *str,
78 const FriBidiStrIndex len,
79 const FriBidiCharType *types,
80 /* output */
81 FriBidiBracketType *btypes
82)
83{
84 FriBidiStrIndex i;
85 for (i=0; i<len; i++)
86 {
87 /* Optimization that bracket must be of types ON */
88 if (*types == FRIBIDI_TYPE_ON)
89 *btypes = fribidi_get_bracket (ch: *str);
90 else
91 *btypes = FRIBIDI_NO_BRACKET;
92
93 btypes++;
94 types++;
95 str++;
96 }
97}
98
99/* Editor directions:
100 * Local Variables:
101 * mode: c
102 * c-basic-offset: 2
103 * indent-tabs-mode: t
104 * tab-width: 8
105 * End:
106 * vim: textwidth=78: autoindent: cindent: shiftwidth=2: tabstop=8:
107 */
108

source code of gtk/subprojects/fribidi/lib/fribidi-brackets.c