Update.
[glibc.git] / iconv / gconv.c
blob9484fc88818afa2a41c24534c07155d1bc5f530b
1 /* Convert characters in input buffer using conversion descriptor to
2 output buffer.
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. */
22 #include <assert.h>
23 #include <gconv.h>
24 #include <sys/param.h>
25 #include <elf/ldsodefs.h>
28 int
29 internal_function
30 __gconv (gconv_t cd, const char **inbuf, const char *inbufend, char **outbuf,
31 char *outbufend, size_t *converted)
33 size_t last_step = cd->nsteps - 1;
34 int result;
36 if (cd == (gconv_t) -1L)
37 return GCONV_ILLEGAL_DESCRIPTOR;
39 assert (converted != NULL);
40 *converted = 0;
42 if (inbuf == NULL || *inbuf == NULL)
43 /* We just flush. */
44 result = _CALL_DL_FCT (cd->steps->fct,
45 (cd->steps, cd->data, NULL, NULL, converted, 1));
46 else
48 const char *last_start;
50 assert (outbuf != NULL && *outbuf != NULL);
51 cd->data[last_step].outbuf = *outbuf;
52 cd->data[last_step].outbufend = outbufend;
56 last_start = *inbuf;
57 result = _CALL_DL_FCT (cd->steps->fct,
58 (cd->steps, cd->data, inbuf, inbufend,
59 converted, 0));
61 while (result == GCONV_EMPTY_INPUT && last_start != *inbuf
62 && *inbuf + cd->steps->min_needed_from <= inbufend);
65 if (outbuf != NULL && *outbuf != NULL)
66 *outbuf = cd->data[last_step].outbuf;
68 return result;