1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* Copyright (C) 2009 Red Hat, Inc.
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Behdad Esfahbod
*/
#include "hb-private.h"
#include "hb-unicode-private.h"
/*
* hb_unicode_funcs_t
*/
static hb_codepoint_t hb_unicode_get_mirroring_nil (hb_codepoint_t unicode) { return unicode; }
static hb_category_t hb_unicode_get_general_category_nil (hb_codepoint_t unicode) { return HB_CATEGORY_OTHER_LETTER; }
static hb_script_t hb_unicode_get_script_nil (hb_codepoint_t unicode) { return HB_SCRIPT_UNKNOWN; }
static unsigned int hb_unicode_get_combining_class_nil (hb_codepoint_t unicode) { return 0; }
static unsigned int hb_unicode_get_eastasian_width_nil (hb_codepoint_t unicode) { return 1; }
hb_unicode_funcs_t _hb_unicode_funcs_nil = {
HB_REFERENCE_COUNT_INVALID, /* ref_count */
TRUE, /* immutable */
hb_unicode_get_general_category_nil,
hb_unicode_get_combining_class_nil,
hb_unicode_get_mirroring_nil,
hb_unicode_get_script_nil,
hb_unicode_get_eastasian_width_nil
};
hb_unicode_funcs_t *
hb_unicode_funcs_create (void)
{
hb_unicode_funcs_t *ufuncs;
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
*ufuncs = _hb_unicode_funcs_nil;
HB_OBJECT_DO_INIT (ufuncs);
return ufuncs;
}
hb_unicode_funcs_t *
hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs)
{
HB_OBJECT_DO_REFERENCE (ufuncs);
}
unsigned int
hb_unicode_funcs_get_reference_count (hb_unicode_funcs_t *ufuncs)
{
HB_OBJECT_DO_GET_REFERENCE_COUNT (ufuncs);
}
void
hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs)
{
HB_OBJECT_DO_DESTROY (ufuncs);
free (ufuncs);
}
hb_unicode_funcs_t *
hb_unicode_funcs_copy (hb_unicode_funcs_t *other_ufuncs)
{
hb_unicode_funcs_t *ufuncs;
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
*ufuncs = *other_ufuncs;
HB_OBJECT_DO_INIT (ufuncs);
ufuncs->immutable = FALSE;
return ufuncs;
}
void
hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs)
{
if (HB_OBJECT_IS_INERT (ufuncs))
return;
ufuncs->immutable = TRUE;
}
void
hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_mirroring_func_t mirroring_func)
{
if (ufuncs->immutable)
return;
ufuncs->get_mirroring = mirroring_func ? mirroring_func : hb_unicode_get_mirroring_nil;
}
void
hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_general_category_func_t general_category_func)
{
if (ufuncs->immutable)
return;
ufuncs->get_general_category = general_category_func ? general_category_func : hb_unicode_get_general_category_nil;
}
void
hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_script_func_t script_func)
{
if (ufuncs->immutable)
return;
ufuncs->get_script = script_func ? script_func : hb_unicode_get_script_nil;
}
void
hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_combining_class_func_t combining_class_func)
{
if (ufuncs->immutable)
return;
ufuncs->get_combining_class = combining_class_func ? combining_class_func : hb_unicode_get_combining_class_nil;
}
void
hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_eastasian_width_func_t eastasian_width_func)
{
if (ufuncs->immutable)
return;
ufuncs->get_eastasian_width = eastasian_width_func ? eastasian_width_func : hb_unicode_get_eastasian_width_nil;
}
|
