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
162
163
164
|
/* Conversion from UTF-16/UTF-32 to legacy encodings.
Copyright (C) 2002, 2006-2024 Free Software Foundation, Inc.
This file is free software.
It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
You can redistribute it and/or modify it under either
- the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3, or (at your
option) any later version, or
- the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option)
any later version, or
- the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License and the GNU General Public License
for more details.
You should have received a copy of the GNU Lesser General Public
License and of the GNU General Public License along with this
program. If not, see <https://www.gnu.org/licenses/>. */
char *
FUNC (const char *tocode,
enum iconv_ilseq_handler handler,
const UNIT *src, size_t srclen,
size_t *offsets,
char *resultbuf, size_t *lengthp)
{
#if HAVE_UTF_NAME
size_t *scaled_offsets;
char *result;
size_t length;
if (offsets != NULL && srclen > 0)
{
scaled_offsets =
(size_t *) malloc (srclen * sizeof (UNIT) * sizeof (size_t));
if (scaled_offsets == NULL)
{
errno = ENOMEM;
return NULL;
}
}
else
scaled_offsets = NULL;
result = resultbuf;
length = *lengthp;
if (mem_iconveha ((const char *) src, srclen * sizeof (UNIT),
UTF_NAME, tocode,
handler == iconveh_question_mark, handler,
scaled_offsets, &result, &length) < 0)
{
int saved_errno = errno;
free (scaled_offsets);
errno = saved_errno;
return NULL;
}
if (offsets != NULL)
{
/* Convert scaled_offsets[srclen * sizeof (UNIT)] to
offsets[srclen]. */
size_t i;
for (i = 0; i < srclen; i++)
offsets[i] = scaled_offsets[i * sizeof (UNIT)];
free (scaled_offsets);
}
if (result == NULL) /* when (resultbuf == NULL && length == 0) */
{
result = (char *) malloc (1);
if (result == NULL)
{
errno = ENOMEM;
return NULL;
}
}
*lengthp = length;
return result;
#else
uint8_t tmpbuf[4096];
size_t tmpbufsize = SIZEOF (tmpbuf);
uint8_t *utf8_src;
size_t utf8_srclen;
size_t *scaled_offsets;
char *result;
utf8_src = U_TO_U8 (src, srclen, tmpbuf, &tmpbufsize);
if (utf8_src == NULL)
return NULL;
utf8_srclen = tmpbufsize;
if (offsets != NULL && utf8_srclen > 0)
{
scaled_offsets = (size_t *) malloc (utf8_srclen * sizeof (size_t));
if (scaled_offsets == NULL)
{
if (utf8_src != tmpbuf)
free (utf8_src);
errno = ENOMEM;
return NULL;
}
}
else
scaled_offsets = NULL;
result = u8_conv_to_encoding (tocode, handler, utf8_src, utf8_srclen,
scaled_offsets, resultbuf, lengthp);
if (result == NULL)
{
int saved_errno = errno;
free (scaled_offsets);
if (utf8_src != tmpbuf)
free (utf8_src);
errno = saved_errno;
return NULL;
}
if (offsets != NULL)
{
size_t iunit; /* offset into src */
size_t i8; /* offset into utf8_src */
for (iunit = 0; iunit < srclen; iunit++)
offsets[iunit] = (size_t)(-1);
iunit = 0;
i8 = 0;
while (iunit < srclen && i8 < utf8_srclen)
{
int countunit;
int count8;
offsets[iunit] = scaled_offsets[i8];
countunit = U_MBLEN (src + iunit, srclen - iunit);
count8 = u8_mblen (utf8_src + i8, utf8_srclen - i8);
if (countunit < 0 || count8 < 0)
abort ();
iunit += countunit;
i8 += count8;
}
/* Check that utf8_src has been traversed entirely. */
if (i8 < utf8_srclen)
abort ();
/* Check that src has been traversed entirely, except possibly for an
incomplete sequence of units at the end. */
if (iunit < srclen)
{
offsets[iunit] = *lengthp;
if (!(U_MBLEN (src + iunit, srclen - iunit) < 0))
abort ();
}
free (scaled_offsets);
}
if (utf8_src != tmpbuf)
free (utf8_src);
return result;
#endif
}
|
