1 /* Convert characters in input buffer using conversion descriptor to
3 Copyright (C) 1997-2019 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 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.
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 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <https://www.gnu.org/licenses/>. */
24 #include <sys/param.h>
26 #include <gconv_int.h>
31 __gconv (__gconv_t cd
, const unsigned char **inbuf
,
32 const unsigned char *inbufend
, unsigned char **outbuf
,
33 unsigned char *outbufend
, size_t *irreversible
)
38 if (cd
== (__gconv_t
) -1L)
39 return __GCONV_ILLEGAL_DESCRIPTOR
;
41 last_step
= cd
->__nsteps
- 1;
43 assert (irreversible
!= NULL
);
46 cd
->__data
[last_step
].__outbuf
= outbuf
!= NULL
? *outbuf
: NULL
;
47 cd
->__data
[last_step
].__outbufend
= outbufend
;
49 __gconv_fct fct
= cd
->__steps
->__fct
;
51 if (cd
->__steps
->__shlib_handle
!= NULL
)
55 if (inbuf
== NULL
|| *inbuf
== NULL
)
58 result
= DL_CALL_FCT (fct
,
59 (cd
->__steps
, cd
->__data
, NULL
, NULL
, NULL
,
61 cd
->__data
[last_step
].__outbuf
== NULL
? 2 : 1,
64 /* If the flush was successful clear the rest of the state. */
65 if (result
== __GCONV_OK
)
66 for (size_t cnt
= 0; cnt
<= last_step
; ++cnt
)
67 cd
->__data
[cnt
].__invocation_counter
= 0;
71 const unsigned char *last_start
;
73 assert (outbuf
!= NULL
&& *outbuf
!= NULL
);
78 result
= DL_CALL_FCT (fct
,
79 (cd
->__steps
, cd
->__data
, inbuf
, inbufend
,
80 NULL
, irreversible
, 0, 0));
82 while (result
== __GCONV_EMPTY_INPUT
&& last_start
!= *inbuf
83 && *inbuf
+ cd
->__steps
->__min_needed_from
<= inbufend
);
86 if (outbuf
!= NULL
&& *outbuf
!= NULL
)
87 *outbuf
= cd
->__data
[last_step
].__outbuf
;