a672193cd8
- CD9660_ICONV, NTFS_ICONV and MSDOSFS_ICONV kernel options (with corresponding modules). - kiconv(3) for loadable charset conversion tables support. Submitted by: Ryuichiro Imura <imura@ryu16.org>
133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
/*
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* Copyright (c) 2000-2001, Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Boris Popov.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/iconv.h>
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#include "iconv_converter_if.h"
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/*
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* "XLAT" converter
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*/
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#ifdef MODULE_DEPEND
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MODULE_DEPEND(iconv_xlat, libiconv, 2, 2, 2);
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#endif
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/*
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* XLAT converter instance
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*/
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struct iconv_xlat {
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KOBJ_FIELDS;
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u_char * d_table;
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struct iconv_cspair * d_csp;
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};
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static int
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iconv_xlat_open(struct iconv_converter_class *dcp,
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struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp)
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{
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struct iconv_xlat *dp;
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dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK);
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dp->d_table = csp->cp_data;
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dp->d_csp = csp;
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csp->cp_refcount++;
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*dpp = (void*)dp;
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return 0;
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}
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static int
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iconv_xlat_close(void *data)
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{
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struct iconv_xlat *dp = data;
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dp->d_csp->cp_refcount--;
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kobj_delete((struct kobj*)data, M_ICONV);
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return 0;
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}
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static int
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iconv_xlat_conv(void *d2p, const char **inbuf,
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size_t *inbytesleft, char **outbuf, size_t *outbytesleft,
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int convchar, int casetype)
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{
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struct iconv_xlat *dp = (struct iconv_xlat*)d2p;
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const char *src;
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char *dst;
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int n, r;
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if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL)
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return 0;
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if (casetype != 0)
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return -1;
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if (convchar == 1)
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r = n = 1;
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else
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r = n = min(*inbytesleft, *outbytesleft);
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src = *inbuf;
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dst = *outbuf;
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while(r--)
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*dst++ = dp->d_table[(u_char)*src++];
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*inbuf += n;
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*outbuf += n;
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*inbytesleft -= n;
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*outbytesleft -= n;
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return 0;
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}
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static const char *
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iconv_xlat_name(struct iconv_converter_class *dcp)
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{
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return "xlat";
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}
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static kobj_method_t iconv_xlat_methods[] = {
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KOBJMETHOD(iconv_converter_open, iconv_xlat_open),
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KOBJMETHOD(iconv_converter_close, iconv_xlat_close),
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KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv),
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#if 0
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KOBJMETHOD(iconv_converter_init, iconv_xlat_init),
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KOBJMETHOD(iconv_converter_done, iconv_xlat_done),
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#endif
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KOBJMETHOD(iconv_converter_name, iconv_xlat_name),
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{0, 0}
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};
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KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat));
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