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
|
/*
* Copyright © 2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping 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.
*
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_OT_NAME_TABLE_HH
#define HB_OT_NAME_TABLE_HH
#include "hb-open-type-private.hh"
namespace OT {
/*
* name -- The Naming Table
*/
#define HB_OT_TAG_name HB_TAG('n','a','m','e')
struct NameRecord
{
static int cmp (const NameRecord *a, const NameRecord *b)
{
int ret;
ret = b->platformID.cmp (a->platformID);
if (ret) return ret;
ret = b->encodingID.cmp (a->encodingID);
if (ret) return ret;
ret = b->languageID.cmp (a->languageID);
if (ret) return ret;
ret = b->nameID.cmp (a->nameID);
if (ret) return ret;
return 0;
}
inline bool sanitize (hb_sanitize_context_t *c, void *base) {
TRACE_SANITIZE (this);
/* We can check from base all the way up to the end of string... */
return TRACE_RETURN (c->check_struct (this) && c->check_range ((char *) base, (unsigned int) length + offset));
}
USHORT platformID; /* Platform ID. */
USHORT encodingID; /* Platform-specific encoding ID. */
USHORT languageID; /* Language ID. */
USHORT nameID; /* Name ID. */
USHORT length; /* String length (in bytes). */
USHORT offset; /* String offset from start of storage area (in bytes). */
public:
DEFINE_SIZE_STATIC (12);
};
struct name
{
static const hb_tag_t Tag = HB_OT_TAG_name;
inline unsigned int get_name (unsigned int platform_id,
unsigned int encoding_id,
unsigned int language_id,
unsigned int name_id,
void *buffer,
unsigned int buffer_length) const
{
NameRecord key;
key.platformID.set (platform_id);
key.encodingID.set (encoding_id);
key.languageID.set (language_id);
key.nameID.set (name_id);
NameRecord *match = (NameRecord *) bsearch (&key, nameRecord, count, sizeof (nameRecord[0]), (hb_compare_func_t) NameRecord::cmp);
if (!match)
return 0;
unsigned int length = MIN (buffer_length, (unsigned int) match->length);
memcpy (buffer, (char *) this + stringOffset + match->offset, length);
return length;
}
inline bool sanitize_records (hb_sanitize_context_t *c) {
TRACE_SANITIZE (this);
char *string_pool = (char *) this + stringOffset;
unsigned int _count = count;
for (unsigned int i = 0; i < _count; i++)
if (!nameRecord[i].sanitize (c, string_pool)) return TRACE_RETURN (false);
return TRACE_RETURN (true);
}
inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE (this);
return TRACE_RETURN (c->check_struct (this) &&
likely (format == 0 || format == 1) &&
c->check_array (nameRecord, nameRecord[0].static_size, count) &&
sanitize_records (c));
}
/* We only implement format 0 for now. */
protected:
USHORT format; /* Format selector (=0/1). */
USHORT count; /* Number of name records. */
Offset stringOffset; /* Offset to start of string storage (from start of table). */
NameRecord nameRecord[VAR]; /* The name records where count is the number of records. */
public:
DEFINE_SIZE_ARRAY (6, nameRecord);
};
} /* namespace OT */
#endif /* HB_OT_NAME_TABLE_HH */
|
