1/* Copyright (C) 1997-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#ifndef _ICONV_H
19#define _ICONV_H 1
20
21#include <features.h>
22#define __need_size_t
23#include <stddef.h>
24
25
26__BEGIN_DECLS
27
28/* Identifier for conversion method from one codeset to another. */
29typedef void *iconv_t;
30
31
32/* Allocate descriptor for code conversion from codeset FROMCODE to
33 codeset TOCODE.
34
35 This function is a possible cancellation point and therefore not
36 marked with __THROW. */
37extern iconv_t iconv_open (const char *__tocode, const char *__fromcode);
38
39/* Convert at most *INBYTESLEFT bytes from *INBUF according to the
40 code conversion algorithm specified by CD and place up to
41 *OUTBYTESLEFT bytes in buffer at *OUTBUF. */
42extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
43 size_t *__restrict __inbytesleft,
44 char **__restrict __outbuf,
45 size_t *__restrict __outbytesleft);
46
47/* Free resources allocated for descriptor CD for code conversion.
48
49 This function is a possible cancellation point and therefore not
50 marked with __THROW. */
51extern int iconv_close (iconv_t __cd);
52
53__END_DECLS
54
55#endif /* iconv.h */
56

source code of include/iconv.h