blob: 677ee6b49ddb04311f6364a3d2a210a28b2f3c58 (
plain)
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
|
#include <assert.h>
#include <stdlib.h>
#include "wlhangul.h"
static size_t ucschar_len(ucschar ch) {
if (ch < 0x80) {
return 1;
} else if (ch < 0x800) {
return 2;
} else if (ch < 0x10000) {
return 3;
} else if (ch < 0x110000) {
return 4;
}
return 0;
}
static size_t ucschar_to_char(char out[static 4], ucschar ch) {
size_t len = ucschar_len(ch);
switch (len) {
case 1:
out[0] = (char)ch;
break;
case 2:
out[0] = (ch >> 6) | 0xC0;
out[1] = (ch & 0x3F) | 0x80;
break;
case 3:
out[0] = (ch >> 12) | 0xE0;
out[1] = ((ch >> 6) & 0x3F) | 0x80;
out[2] = (ch & 0x3F) | 0x80;
break;
case 4:
out[0] = (ch >> 18) | 0xF0;
out[1] = ((ch >> 12) & 0x3F) | 0x80;
out[2] = ((ch >> 6) & 0x3F) | 0x80;
out[3] = (ch & 0x3F) | 0x80;
break;
}
return len;
}
char *ucsstr_to_str(const ucschar *ucsstr) {
size_t len = 0;
for (size_t i = 0; ucsstr[i] != 0; i++) {
len += ucschar_len(ucsstr[i]);
}
char *str = malloc(len + 1);
size_t n = 0;
for (size_t i = 0; ucsstr[i] != 0; i++) {
n += ucschar_to_char(&str[n], ucsstr[i]);
}
assert(n == len);
str[n] = '\0';
return str;
}
|
