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6973fc01 | 1 | /* Get descriptor for character set conversion. |
d614a753 | 2 | Copyright (C) 1997-2020 Free Software Foundation, Inc. |
6973fc01 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
6973fc01 UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
6973fc01 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
6973fc01 | 19 | |
dec9ed9e | 20 | #include <alloca.h> |
6973fc01 UD |
21 | #include <errno.h> |
22 | #include <iconv.h> | |
dec9ed9e | 23 | #include <stdbool.h> |
6591c335 | 24 | #include <stdlib.h> |
f43ce637 | 25 | #include <string.h> |
6973fc01 | 26 | |
e62c19f1 | 27 | #include <gconv_int.h> |
ee62473f | 28 | #include "gconv_charset.h" |
bd4848fb UD |
29 | |
30 | ||
6973fc01 UD |
31 | iconv_t |
32 | iconv_open (const char *tocode, const char *fromcode) | |
33 | { | |
91927b7c AS |
34 | __gconv_t cd; |
35 | struct gconv_spec conv_spec; | |
f43ce637 | 36 | |
91927b7c AS |
37 | if (__gconv_create_spec (&conv_spec, fromcode, tocode) == NULL) |
38 | return (iconv_t) -1; | |
f43ce637 | 39 | |
91927b7c | 40 | int res = __gconv_open (&conv_spec, &cd, 0); |
dec9ed9e | 41 | |
91927b7c | 42 | gconv_destroy_spec (&conv_spec); |
6973fc01 | 43 | |
a711dd4b | 44 | if (__builtin_expect (res, __GCONV_OK) != __GCONV_OK) |
6973fc01 UD |
45 | { |
46 | /* We must set the error number according to the specs. */ | |
d64b6ad0 | 47 | if (res == __GCONV_NOCONV || res == __GCONV_NODB) |
6973fc01 UD |
48 | __set_errno (EINVAL); |
49 | ||
dec9ed9e | 50 | cd = (iconv_t) -1; |
6973fc01 UD |
51 | } |
52 | ||
53 | return (iconv_t) cd; | |
54 | } |