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Commit | Line | Data |
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6973fc01 UD |
1 | /* Convert characters in input buffer using conversion descriptor to |
2 | output buffer. | |
a711dd4b | 3 | Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
6973fc01 UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
6 | ||
7 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either | |
10 | version 2.1 of the License, or (at your option) any later version. | |
6973fc01 UD |
11 | |
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 | |
41bdb6e2 | 15 | Lesser General Public License for more details. |
6973fc01 | 16 | |
41bdb6e2 | 17 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
18 | License along with the GNU C Library; if not, see |
19 | <http://www.gnu.org/licenses/>. */ | |
6973fc01 | 20 | |
4360eafd | 21 | #include <stddef.h> /* for NULL */ |
e34b0f29 | 22 | #include <errno.h> |
6973fc01 | 23 | #include <iconv.h> |
e62c19f1 UD |
24 | |
25 | #include <gconv_int.h> | |
6973fc01 | 26 | |
e34b0f29 UD |
27 | #include <assert.h> |
28 | ||
6973fc01 UD |
29 | |
30 | size_t | |
0efb48a1 | 31 | iconv (iconv_t cd, char **inbuf, size_t *inbytesleft, char **outbuf, |
6973fc01 UD |
32 | size_t *outbytesleft) |
33 | { | |
d64b6ad0 | 34 | __gconv_t gcd = (__gconv_t) cd; |
8619129f | 35 | char *outstart = outbuf ? *outbuf : NULL; |
38677ace | 36 | size_t irreversible; |
e34b0f29 UD |
37 | int result; |
38 | ||
ec92d937 | 39 | if (__builtin_expect (inbuf == NULL || *inbuf == NULL, 0)) |
8619129f | 40 | { |
c63598bf | 41 | if (outbuf == NULL || *outbuf == NULL) |
38677ace | 42 | result = __gconv (gcd, NULL, NULL, NULL, NULL, &irreversible); |
c63598bf UD |
43 | else |
44 | result = __gconv (gcd, NULL, NULL, (unsigned char **) outbuf, | |
45 | (unsigned char *) (outstart + *outbytesleft), | |
38677ace | 46 | &irreversible); |
8619129f UD |
47 | } |
48 | else | |
49 | { | |
50 | const char *instart = *inbuf; | |
51 | ||
97e94e49 UD |
52 | result = __gconv (gcd, (const unsigned char **) inbuf, |
53 | (const unsigned char *) (*inbuf + *inbytesleft), | |
b117f744 UD |
54 | (unsigned char **) outbuf, |
55 | (unsigned char *) (*outbuf + *outbytesleft), | |
38677ace | 56 | &irreversible); |
8619129f UD |
57 | |
58 | *inbytesleft -= *inbuf - instart; | |
59 | } | |
60 | if (outstart != NULL) | |
61 | *outbytesleft -= *outbuf - outstart; | |
62 | ||
a711dd4b | 63 | switch (__builtin_expect (result, __GCONV_OK)) |
e34b0f29 | 64 | { |
d64b6ad0 | 65 | case __GCONV_ILLEGAL_DESCRIPTOR: |
e34b0f29 | 66 | __set_errno (EBADF); |
38677ace | 67 | irreversible = (size_t) -1L; |
e34b0f29 UD |
68 | break; |
69 | ||
d64b6ad0 | 70 | case __GCONV_ILLEGAL_INPUT: |
e34b0f29 | 71 | __set_errno (EILSEQ); |
38677ace | 72 | irreversible = (size_t) -1L; |
e34b0f29 UD |
73 | break; |
74 | ||
d64b6ad0 | 75 | case __GCONV_FULL_OUTPUT: |
e34b0f29 | 76 | __set_errno (E2BIG); |
38677ace | 77 | irreversible = (size_t) -1L; |
e34b0f29 UD |
78 | break; |
79 | ||
d64b6ad0 | 80 | case __GCONV_INCOMPLETE_INPUT: |
e34b0f29 | 81 | __set_errno (EINVAL); |
38677ace | 82 | irreversible = (size_t) -1L; |
e34b0f29 UD |
83 | break; |
84 | ||
d64b6ad0 UD |
85 | case __GCONV_EMPTY_INPUT: |
86 | case __GCONV_OK: | |
e34b0f29 UD |
87 | /* Nothing. */ |
88 | break; | |
6973fc01 | 89 | |
e34b0f29 UD |
90 | default: |
91 | assert (!"Nothing like this should happen"); | |
92 | } | |
6973fc01 | 93 | |
38677ace | 94 | return irreversible; |
6973fc01 | 95 | } |