1 /* Conversion to UTF-8 from legacy encodings.
2 Copyright (C) 2002, 2006-2007, 2009-2013 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published
6 by the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>. */
28 #include "c-strcaseeq.h"
29 #include "striconveha.h"
33 u8_conv_from_encoding (const char *fromcode,
34 enum iconv_ilseq_handler handler,
35 const char *src, size_t srclen,
37 uint8_t *resultbuf, size_t *lengthp)
39 if (STRCASEEQ (fromcode, "UTF-8", 'U','T','F','-','8',0,0,0,0))
41 /* Conversion from UTF-8 to UTF-8. No need to go through iconv(). */
44 if (u8_check ((const uint8_t *) src, srclen))
54 for (i = 0; i < srclen; )
56 int count = u8_mblen ((const uint8_t *) src + i, srclen - i);
57 /* We can rely on count > 0 because of the previous u8_check. */
63 offsets[i++] = (size_t)(-1);
67 /* Memory allocation. */
68 if (resultbuf != NULL && *lengthp >= srclen)
72 result = (uint8_t *) malloc (srclen > 0 ? srclen : 1);
80 memcpy ((char *) result, src, srclen);
86 char *result = (char *) resultbuf;
87 size_t length = *lengthp;
89 if (mem_iconveha (src, srclen, fromcode, "UTF-8", true, handler,
90 offsets, &result, &length) < 0)
93 if (result == NULL) /* when (resultbuf == NULL && length == 0) */
95 result = (char *) malloc (1);
103 return (uint8_t *) result;