mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 09:01:07 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/* Convert characters in input buffer using conversion descriptor to
|
|
output buffer.
|
|
Copyright (C) 1997-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
The GNU C Library 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 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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 the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stddef.h> /* for NULL */
|
|
#include <errno.h>
|
|
#include <iconv.h>
|
|
|
|
#include <gconv_int.h>
|
|
|
|
#include <assert.h>
|
|
|
|
|
|
size_t
|
|
iconv (iconv_t cd, char **inbuf, size_t *inbytesleft, char **outbuf,
|
|
size_t *outbytesleft)
|
|
{
|
|
__gconv_t gcd = (__gconv_t) cd;
|
|
char *outstart = outbuf ? *outbuf : NULL;
|
|
size_t irreversible;
|
|
int result;
|
|
|
|
if (__glibc_unlikely (inbuf == NULL || *inbuf == NULL))
|
|
{
|
|
if (outbuf == NULL || *outbuf == NULL)
|
|
result = __gconv (gcd, NULL, NULL, NULL, NULL, &irreversible);
|
|
else
|
|
result = __gconv (gcd, NULL, NULL, (unsigned char **) outbuf,
|
|
(unsigned char *) (outstart + *outbytesleft),
|
|
&irreversible);
|
|
}
|
|
else
|
|
{
|
|
const char *instart = *inbuf;
|
|
|
|
result = __gconv (gcd, (const unsigned char **) inbuf,
|
|
(const unsigned char *) (*inbuf + *inbytesleft),
|
|
(unsigned char **) outbuf,
|
|
(unsigned char *) (*outbuf + *outbytesleft),
|
|
&irreversible);
|
|
|
|
*inbytesleft -= *inbuf - instart;
|
|
}
|
|
if (outstart != NULL)
|
|
*outbytesleft -= *outbuf - outstart;
|
|
|
|
switch (__builtin_expect (result, __GCONV_OK))
|
|
{
|
|
case __GCONV_ILLEGAL_DESCRIPTOR:
|
|
__set_errno (EBADF);
|
|
irreversible = (size_t) -1L;
|
|
break;
|
|
|
|
case __GCONV_ILLEGAL_INPUT:
|
|
__set_errno (EILSEQ);
|
|
irreversible = (size_t) -1L;
|
|
break;
|
|
|
|
case __GCONV_FULL_OUTPUT:
|
|
__set_errno (E2BIG);
|
|
irreversible = (size_t) -1L;
|
|
break;
|
|
|
|
case __GCONV_INCOMPLETE_INPUT:
|
|
__set_errno (EINVAL);
|
|
irreversible = (size_t) -1L;
|
|
break;
|
|
|
|
case __GCONV_EMPTY_INPUT:
|
|
case __GCONV_OK:
|
|
/* Nothing. */
|
|
break;
|
|
|
|
default:
|
|
assert (!"Nothing like this should happen");
|
|
}
|
|
|
|
return irreversible;
|
|
}
|