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
|
/* $Id: utf8.c,v 1.1 2008-09-09 22:16:37 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
/*
* UTF8 data structures. Just crappy array + linear search for now.
*/
/* Pack UTF8 index into attr, data. */
void
utf8_pack(int idx, u_char *data, u_short *attr)
{
*data = idx & 0xff;
*attr &= ~(ATTR_UTF8b8|ATTR_UTF8b9);
if (idx & 0x100)
*attr |= ATTR_UTF8b8;
if (idx & 0x200)
*attr |= ATTR_UTF8b9;
if (idx & 0x400)
*attr |= ATTR_UTF8b10;
if (idx & 0x800)
*attr |= ATTR_UTF8b11;
}
/* Unpack UTF8 index from attr, data. */
int
utf8_unpack(u_char data, u_short attr)
{
int idx;
idx = data;
if (attr & ATTR_UTF8b8)
idx |= 0x100;
if (attr & ATTR_UTF8b9)
idx |= 0x200;
if (attr & ATTR_UTF8b10)
idx |= 0x400;
if (attr & ATTR_UTF8b11)
idx |= 0x800;
return (idx);
}
void
utf8_init(struct utf8_table *utab, int limit)
{
utab->limit = limit;
ARRAY_INIT(&utab->array);
}
void
utf8_free(struct utf8_table *utab)
{
ARRAY_FREE(&utab->array);
}
struct utf8_data *
utf8_lookup(struct utf8_table *utab, int idx)
{
if (idx < 0 || idx >= (int) ARRAY_LENGTH(&utab->array))
return (NULL);
return (&ARRAY_ITEM(&utab->array, idx));
}
int
utf8_search(struct utf8_table *utab, struct utf8_data *udat)
{
u_int idx;
for (idx = 0; idx < ARRAY_LENGTH(&utab->array); idx++) {
if (memcmp(udat->data,
ARRAY_ITEM(&utab->array, idx).data, sizeof udat->data) == 0)
return (idx);
}
return (-1);
}
int
utf8_add(struct utf8_table *utab, struct utf8_data *udat)
{
int idx;
if (ARRAY_LENGTH(&utab->array) == utab->limit)
return (-1);
if ((idx = utf8_search(utab, udat)) != -1)
return (idx);
ARRAY_EXPAND(&utab->array, 1);
memcpy(
&ARRAY_LAST(&utab->array), udat, sizeof ARRAY_LAST(&utab->array));
return (ARRAY_LENGTH(&utab->array) - 1);
}
|
