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glibc/iconv/iconv.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

97 lines
2.7 KiB
C

/* Convert characters in input buffer using conversion descriptor to
output buffer.
Copyright (C) 1997, 1998, 1999, 2000 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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 (__builtin_expect (inbuf == NULL || *inbuf == NULL, 0))
{
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;
}