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
|
/*
* toucs.c - convert charsets to Unicode.
*/
#include "charset.h"
#include "internal.h"
struct unicode_emit_param {
wchar_t *output;
int outlen;
const wchar_t *errstr;
int errlen;
int stopped;
};
static void unicode_emit(void *ctx, long int output)
{
struct unicode_emit_param *param = (struct unicode_emit_param *)ctx;
wchar_t outval;
wchar_t const *p;
int outlen;
if (output == ERROR) {
if (param->errstr) {
p = param->errstr;
outlen = param->errlen;
} else {
outval = 0xFFFD; /* U+FFFD REPLACEMENT CHARACTER */
p = &outval;
outlen = 1;
}
} else {
outval = (wchar_t)output;
p = &outval;
outlen = 1;
}
if (param->outlen >= outlen) {
while (outlen > 0) {
*param->output++ = *p++;
param->outlen--;
outlen--;
}
} else {
param->stopped = 1;
}
}
int charset_to_unicode(const char **input, int *inlen,
wchar_t *output, int outlen,
int charset, charset_state *state,
const wchar_t *errstr, int errlen)
{
charset_spec const *spec = charset_find_spec(charset);
charset_state localstate = CHARSET_INIT_STATE;
struct unicode_emit_param param;
param.output = output;
param.outlen = outlen;
param.errstr = errstr;
param.errlen = errlen;
param.stopped = 0;
if (state)
localstate = *state; /* structure copy */
while (*inlen > 0) {
int lenbefore = (int)(param.output - output);
spec->read(spec, (unsigned char)**input, &localstate,
unicode_emit, ¶m);
if (param.stopped) {
/*
* The emit function has _tried_ to output some
* characters, but ran up against the end of the
* buffer. Leave immediately, and return what happened
* _before_ attempting to process this character.
*/
return lenbefore;
}
if (state)
*state = localstate; /* structure copy */
(*input)++;
(*inlen)--;
}
return (int)(param.output - output);
}
|
