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citrus_iconv_none.c revision 1.2 
      1 /*	$NetBSD: citrus_iconv_none.c,v 1.2 2003/07/01 09:42:16 tshiozak Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2003 Citrus Project,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #if defined(LIBC_SCCS) && !defined(lint)
     31 __RCSID("$NetBSD: citrus_iconv_none.c,v 1.2 2003/07/01 09:42:16 tshiozak Exp $");
     32 #endif /* LIBC_SCCS and not lint */
     33 
     34 #include <assert.h>
     35 #include <errno.h>
     36 #include <stdlib.h>
     37 #include <string.h>
     38 #include <sys/queue.h>
     39 
     40 #include "citrus_types.h"
     41 #include "citrus_module.h"
     42 #include "citrus_hash.h"
     43 #include "citrus_iconv.h"
     44 #include "citrus_iconv_none.h"
     45 
     46 /* ---------------------------------------------------------------------- */
     47 
     48 _CITRUS_ICONV_DECLS(iconv_none);
     49 _CITRUS_ICONV_DEF_OPS(iconv_none);
     50 
     51 
     52 /* ---------------------------------------------------------------------- */
     53 
     54 int
     55 _citrus_iconv_none_iconv_getops(struct _citrus_iconv_ops *ops, size_t lenops,
     56 				uint32_t expected_version)
     57 {
     58 	if (expected_version<_CITRUS_ICONV_ABI_VERSION || lenops<sizeof(*ops))
     59 		return (EINVAL);
     60 
     61 	memcpy(ops, &_citrus_iconv_none_iconv_ops,
     62 	       sizeof(_citrus_iconv_none_iconv_ops));
     63 
     64 	return (0);
     65 }
     66 
     67 static int
     68 /*ARGSUSED*/
     69 _citrus_iconv_none_iconv_init_shared(
     70 	struct _citrus_iconv_shared * __restrict ci,
     71 	const char * __restrict curdir,
     72 	const char * __restrict in, const char * __restrict out,
     73 	const void * __restrict var, size_t lenvar)
     74 {
     75 	ci->ci_closure = NULL;
     76 	return 0;
     77 }
     78 
     79 static void
     80 /*ARGSUSED*/
     81 _citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci)
     82 {
     83 }
     84 
     85 static int
     86 /*ARGSUSED*/
     87 _citrus_iconv_none_iconv_init_context(struct _citrus_iconv *cv)
     88 {
     89 	cv->cv_closure = NULL;
     90 }
     91 
     92 static void
     93 /*ARGSUSED*/
     94 _citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv)
     95 {
     96 }
     97 
     98 static int
     99 /*ARGSUSED*/
    100 _citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci,
    101 				 const char * __restrict * __restrict in,
    102 				 size_t * __restrict inbytes,
    103 				 char * __restrict * __restrict out,
    104 				 size_t * __restrict outbytes,
    105 				 u_int32_t flags, size_t * __restrict invalids)
    106 {
    107 	int e2big;
    108 	size_t len;
    109 
    110 	len = *inbytes;
    111 	e2big = 0;
    112 	if (*outbytes<len) {
    113 		e2big = 1;
    114 		len = *outbytes;
    115 	}
    116 	memcpy(*out, *in, len);
    117 	in += len;
    118 	*inbytes -= len;
    119 	out+=len;
    120 	*outbytes -= len;
    121 	*invalids = 0;
    122 	if (e2big) {
    123 		return (E2BIG);
    124 	}
    125 
    126 	return (0);
    127 }
    128