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/* Conversion from UTF-16/UTF-32 to legacy encodings.
Copyright (C) 2002, 2006-2007 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
int
FUNC (const char *tocode,
enum iconv_ilseq_handler handler,
const UNIT *src, size_t srclen,
size_t *offsets,
char **resultp, size_t *lengthp)
{
#if HAVE_UTF_NAME
size_t *scaled_offsets;
int retval;
if (offsets != NULL)
{
scaled_offsets =
(size_t *) malloc (srclen * sizeof (UNIT) * sizeof (size_t));
if (scaled_offsets == NULL)
{
errno = ENOMEM;
return -1;
}
}
else
scaled_offsets = NULL;
retval = mem_iconveha ((const char *) src, srclen * sizeof (UNIT),
UTF_NAME, tocode,
handler == iconveh_question_mark, handler,
scaled_offsets, resultp, lengthp);
if (offsets != NULL)
{
if (retval >= 0)
{
/* 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);
}
return retval;
#else
uint8_t tmpbuf[4096];
size_t tmpbufsize = SIZEOF (tmpbuf);
uint8_t *utf8_src;
size_t utf8_srclen;
size_t *scaled_offsets;
int retval;
utf8_src = U_TO_U8 (src, srclen, tmpbuf, &tmpbufsize);
if (utf8_src == NULL)
return NULL;
utf8_srclen = tmpbufsize;
if (offsets != NULL)
{
scaled_offsets = (size_t *) malloc (utf8_srclen * sizeof (size_t));
if (scaled_offsets == NULL)
{
if (utf8_src != tmpbuf)
free (utf8_src);
errno = ENOMEM;
return -1;
}
}
else
scaled_offsets = NULL;
retval = u8_conv_to_encoding (tocode, handler, utf8_src, utf8_srclen,
scaled_offsets, resultp, lengthp);
if (retval < 0)
{
if (utf8_src != tmpbuf)
{
int saved_errno = errno;
free (utf8_src);
errno = saved_errno;
}
return -1;
}
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)
{
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;
}
free (scaled_offsets);
}
if (utf8_src != tmpbuf)
free (utf8_src);
return retval;
#endif
}
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