92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* Convert characters in input buffer using conversion descriptor to
|
|
output buffer.
|
|
Copyright (C) 1997-2015 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <assert.h>
|
|
#include <dlfcn.h>
|
|
#include <stddef.h>
|
|
#include <sys/param.h>
|
|
|
|
#include <gconv_int.h>
|
|
#include <sysdep.h>
|
|
|
|
|
|
int
|
|
internal_function
|
|
__gconv (__gconv_t cd, const unsigned char **inbuf,
|
|
const unsigned char *inbufend, unsigned char **outbuf,
|
|
unsigned char *outbufend, size_t *irreversible)
|
|
{
|
|
size_t last_step;
|
|
int result;
|
|
|
|
if (cd == (__gconv_t) -1L)
|
|
return __GCONV_ILLEGAL_DESCRIPTOR;
|
|
|
|
last_step = cd->__nsteps - 1;
|
|
|
|
assert (irreversible != NULL);
|
|
*irreversible = 0;
|
|
|
|
cd->__data[last_step].__outbuf = outbuf != NULL ? *outbuf : NULL;
|
|
cd->__data[last_step].__outbufend = outbufend;
|
|
|
|
__gconv_fct fct = cd->__steps->__fct;
|
|
#ifdef PTR_DEMANGLE
|
|
if (cd->__steps->__shlib_handle != NULL)
|
|
PTR_DEMANGLE (fct);
|
|
#endif
|
|
|
|
if (inbuf == NULL || *inbuf == NULL)
|
|
{
|
|
/* We just flush. */
|
|
result = DL_CALL_FCT (fct,
|
|
(cd->__steps, cd->__data, NULL, NULL, NULL,
|
|
irreversible,
|
|
cd->__data[last_step].__outbuf == NULL ? 2 : 1,
|
|
0));
|
|
|
|
/* If the flush was successful clear the rest of the state. */
|
|
if (result == __GCONV_OK)
|
|
for (size_t cnt = 0; cnt <= last_step; ++cnt)
|
|
cd->__data[cnt].__invocation_counter = 0;
|
|
}
|
|
else
|
|
{
|
|
const unsigned char *last_start;
|
|
|
|
assert (outbuf != NULL && *outbuf != NULL);
|
|
|
|
do
|
|
{
|
|
last_start = *inbuf;
|
|
result = DL_CALL_FCT (fct,
|
|
(cd->__steps, cd->__data, inbuf, inbufend,
|
|
NULL, irreversible, 0, 0));
|
|
}
|
|
while (result == __GCONV_EMPTY_INPUT && last_start != *inbuf
|
|
&& *inbuf + cd->__steps->__min_needed_from <= inbufend);
|
|
}
|
|
|
|
if (outbuf != NULL && *outbuf != NULL)
|
|
*outbuf = cd->__data[last_step].__outbuf;
|
|
|
|
return result;
|
|
}
|