diff options
Diffstat (limited to 'sys/libkern/iconv_xlat.c')
-rw-r--r-- | sys/libkern/iconv_xlat.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/sys/libkern/iconv_xlat.c b/sys/libkern/iconv_xlat.c new file mode 100644 index 0000000..6dd2800 --- /dev/null +++ b/sys/libkern/iconv_xlat.c @@ -0,0 +1,124 @@ +/* + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Boris Popov. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * 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. + * + * $FreeBSD$ + */ +#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, 1, 1, 1); +#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) +{ + 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; + 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)); |