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6973fc01 UD |
1 | /* Convert characters in input buffer using conversion descriptor to |
2 | output buffer. | |
e573146a | 3 | Copyright (C) 1997, 1998, 1999 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 | |
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. | |
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 | |
15 | Library General Public License for more details. | |
16 | ||
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. */ | |
21 | ||
8619129f | 22 | #include <assert.h> |
6973fc01 | 23 | #include <gconv.h> |
8619129f | 24 | #include <sys/param.h> |
b3fc5f84 | 25 | #include <dlfcn.h> |
6973fc01 UD |
26 | |
27 | int | |
0d9f6793 | 28 | internal_function |
d64b6ad0 UD |
29 | __gconv (__gconv_t cd, const unsigned char **inbuf, |
30 | const unsigned char *inbufend, unsigned char **outbuf, | |
31 | unsigned char *outbufend, size_t *converted) | |
6973fc01 | 32 | { |
d64b6ad0 | 33 | size_t last_step = cd->__nsteps - 1; |
6973fc01 UD |
34 | int result; |
35 | ||
d64b6ad0 UD |
36 | if (cd == (__gconv_t) -1L) |
37 | return __GCONV_ILLEGAL_DESCRIPTOR; | |
e34b0f29 | 38 | |
8619129f UD |
39 | assert (converted != NULL); |
40 | *converted = 0; | |
6973fc01 | 41 | |
c63598bf | 42 | cd->__data[last_step].__outbuf = outbuf != NULL ? *outbuf : NULL; |
4a422921 UD |
43 | cd->__data[last_step].__outbufend = outbufend; |
44 | ||
8619129f UD |
45 | if (inbuf == NULL || *inbuf == NULL) |
46 | /* We just flush. */ | |
94e365c6 | 47 | result = DL_CALL_FCT (cd->__steps->__fct, |
d64b6ad0 UD |
48 | (cd->__steps, cd->__data, NULL, NULL, |
49 | converted, 1)); | |
8619129f UD |
50 | else |
51 | { | |
e573146a | 52 | const unsigned char *last_start; |
6973fc01 | 53 | |
8619129f | 54 | assert (outbuf != NULL && *outbuf != NULL); |
6973fc01 | 55 | |
8619129f UD |
56 | do |
57 | { | |
8619129f | 58 | last_start = *inbuf; |
94e365c6 | 59 | result = DL_CALL_FCT (cd->__steps->__fct, |
d64b6ad0 | 60 | (cd->__steps, cd->__data, inbuf, inbufend, |
5ad49c07 | 61 | converted, 0)); |
8619129f | 62 | } |
d64b6ad0 UD |
63 | while (result == __GCONV_EMPTY_INPUT && last_start != *inbuf |
64 | && *inbuf + cd->__steps->__min_needed_from <= inbufend); | |
4bca4c17 | 65 | } |
6973fc01 | 66 | |
8619129f | 67 | if (outbuf != NULL && *outbuf != NULL) |
d64b6ad0 | 68 | *outbuf = cd->__data[last_step].__outbuf; |
8619129f | 69 | |
6973fc01 UD |
70 | return result; |
71 | } |