1 /* Convert characters in input buffer using conversion descriptor to
3 Copyright (C) 1997-2022 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
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.
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
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
23 #include <sys/param.h>
25 #include <gconv_int.h>
30 __gconv (__gconv_t cd
, const unsigned char **inbuf
,
31 const unsigned char *inbufend
, unsigned char **outbuf
,
32 unsigned char *outbufend
, size_t *irreversible
)
37 if (cd
== (__gconv_t
) -1L)
38 return __GCONV_ILLEGAL_DESCRIPTOR
;
40 last_step
= cd
->__nsteps
- 1;
42 assert (irreversible
!= NULL
);
45 cd
->__data
[last_step
].__outbuf
= outbuf
!= NULL
? *outbuf
: NULL
;
46 cd
->__data
[last_step
].__outbufend
= outbufend
;
48 __gconv_fct fct
= cd
->__steps
->__fct
;
50 if (cd
->__steps
->__shlib_handle
!= NULL
)
54 if (inbuf
== NULL
|| *inbuf
== NULL
)
57 result
= DL_CALL_FCT (fct
,
58 (cd
->__steps
, cd
->__data
, NULL
, NULL
, NULL
,
60 cd
->__data
[last_step
].__outbuf
== NULL
? 2 : 1,
63 /* If the flush was successful clear the rest of the state. */
64 if (result
== __GCONV_OK
)
65 for (size_t cnt
= 0; cnt
<= last_step
; ++cnt
)
66 cd
->__data
[cnt
].__invocation_counter
= 0;
70 const unsigned char *last_start
;
72 assert (outbuf
!= NULL
&& *outbuf
!= NULL
);
77 result
= DL_CALL_FCT (fct
,
78 (cd
->__steps
, cd
->__data
, inbuf
, inbufend
,
79 NULL
, irreversible
, 0, 0));
81 while (result
== __GCONV_EMPTY_INPUT
&& last_start
!= *inbuf
82 && *inbuf
+ cd
->__steps
->__min_needed_from
<= inbufend
);
85 if (outbuf
!= NULL
&& *outbuf
!= NULL
)
86 *outbuf
= cd
->__data
[last_step
].__outbuf
;