1 /* Convert characters in input buffer using conversion descriptor to
3 Copyright (C) 1997, 1998 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
17 You should have received a copy of the GNU Library General Public
18 License along with the GNU C Library; see the file COPYING.LIB. If not,
19 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
27 __gconv (gconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf,
28 size_t *outbytesleft, size_t *converted)
30 size_t last_step = cd->nsteps - 1;
31 size_t oldinbytes = *inbytesleft;
34 if (cd == (gconv_t) -1L)
35 return GCONV_ILLEGAL_DESCRIPTOR;
37 cd->data[last_step].outbuf = outbuf ? *outbuf : NULL;
38 cd->data[last_step].outbufavail = 0;
39 cd->data[last_step].outbufsize = *outbytesleft;
41 if (converted != NULL)
44 result = (*cd->steps->fct) (cd->steps, cd->data,
45 inbuf ? *inbuf : NULL, inbytesleft,
46 converted, inbuf == NULL || *inbuf == NULL);
48 if (inbuf != NULL && *inbuf != NULL)
49 *inbuf += oldinbytes - *inbytesleft;
50 if (outbuf != NULL && *outbuf != NULL)
52 *outbuf += cd->data[last_step].outbufavail;
53 *outbytesleft -= cd->data[last_step].outbufavail;