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freebsd/sys/libkern/iconv_xlat.c
Pedro F. Giffuni 8a36da99de sys/kern: adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:20:12 +00:00

129 lines
3.4 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2000-2001 Boris Popov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/iconv.h>
#include "iconv_converter_if.h"
/*
* "XLAT" converter
*/
#ifdef MODULE_DEPEND
MODULE_DEPEND(iconv_xlat, libiconv, 2, 2, 2);
#endif
/*
* XLAT converter instance
*/
struct iconv_xlat {
KOBJ_FIELDS;
u_char * d_table;
struct iconv_cspair * d_csp;
};
static int
iconv_xlat_open(struct iconv_converter_class *dcp,
struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp)
{
struct iconv_xlat *dp;
dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK);
dp->d_table = csp->cp_data;
dp->d_csp = csp;
csp->cp_refcount++;
*dpp = (void*)dp;
return 0;
}
static int
iconv_xlat_close(void *data)
{
struct iconv_xlat *dp = data;
dp->d_csp->cp_refcount--;
kobj_delete((struct kobj*)data, M_ICONV);
return 0;
}
static int
iconv_xlat_conv(void *d2p, const char **inbuf,
size_t *inbytesleft, char **outbuf, size_t *outbytesleft,
int convchar, int casetype)
{
struct iconv_xlat *dp = (struct iconv_xlat*)d2p;
const char *src;
char *dst;
int n, r;
if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL)
return 0;
if (casetype != 0)
return -1;
if (convchar == 1)
r = n = 1;
else
r = n = min(*inbytesleft, *outbytesleft);
src = *inbuf;
dst = *outbuf;
while(r--)
*dst++ = dp->d_table[(u_char)*src++];
*inbuf += n;
*outbuf += n;
*inbytesleft -= n;
*outbytesleft -= n;
return 0;
}
static const char *
iconv_xlat_name(struct iconv_converter_class *dcp)
{
return "xlat";
}
static kobj_method_t iconv_xlat_methods[] = {
KOBJMETHOD(iconv_converter_open, iconv_xlat_open),
KOBJMETHOD(iconv_converter_close, iconv_xlat_close),
KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv),
#if 0
KOBJMETHOD(iconv_converter_init, iconv_xlat_init),
KOBJMETHOD(iconv_converter_done, iconv_xlat_done),
#endif
KOBJMETHOD(iconv_converter_name, iconv_xlat_name),
{0, 0}
};
KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat));