NetBSD/lib/libc/citrus/citrus_none.c
christos bc0c808b3b Don't sign extend characters when they get converted to wide characters in
mbtowc. Otherwise you are not going to be able to wctomb them. Added
regression test. From kim, many thanks.
2005-03-27 18:51:19 +00:00

481 lines
9.6 KiB
C

/* $NetBSD: citrus_none.c,v 1.13 2005/03/27 18:51:19 christos Exp $ */
/*-
* Copyright (c)2002 Citrus Project,
* 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>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: citrus_none.c,v 1.13 2005/03/27 18:51:19 christos Exp $");
#endif /* LIBC_SCCS and not lint */
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <locale.h>
#include <wchar.h>
#include <sys/types.h>
#include "citrus_namespace.h"
#include "citrus_types.h"
#include "citrus_module.h"
#include "citrus_ctype.h"
#include "citrus_none.h"
#include "citrus_stdenc.h"
/* ---------------------------------------------------------------------- */
_CITRUS_CTYPE_DECLS(NONE);
_CITRUS_CTYPE_DEF_OPS(NONE);
/* ---------------------------------------------------------------------- */
static int
/*ARGSUSED*/
_citrus_NONE_ctype_init(void ** __restrict cl, void * __restrict var,
size_t lenvar, size_t lenps)
{
*cl = NULL;
return (0);
}
static void
/*ARGSUSED*/
_citrus_NONE_ctype_uninit(void *cl)
{
}
static unsigned
/*ARGSUSED*/
_citrus_NONE_ctype_get_mb_cur_max(void *cl)
{
return (1);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_mblen(void * __restrict cl, const char * __restrict s,
size_t n, int * __restrict nresult)
{
if (!s) {
*nresult = 0; /* state independent */
return (0);
}
if (n==0) {
*nresult = -1;
return (EILSEQ);
}
*nresult = (*s == 0) ? 0 : 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_mbrlen(void * __restrict cl, const char * __restrict s,
size_t n, void * __restrict pspriv,
size_t * __restrict nresult)
{
if (!s) {
*nresult = 0;
return (0);
}
if (n==0) {
*nresult = (size_t)-2;
return (0);
}
*nresult = (*s == 0) ? 0 : 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_mbrtowc(void * __restrict cl, wchar_t * __restrict pwc,
const char * __restrict s, size_t n,
void * __restrict pspriv,
size_t * __restrict nresult)
{
if (s == NULL) {
*nresult = 0;
return (0);
}
if (n == 0) {
*nresult = (size_t)-2;
return (0);
}
if (pwc != NULL)
*pwc = (wchar_t)(unsigned char) *s;
*nresult = *s == '\0' ? 0 : 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_mbsinit(void * __restrict cl,
const void * __restrict pspriv,
int * __restrict nresult)
{
*nresult = 1; /* always initial state */
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_mbsrtowcs(void * __restrict cl, wchar_t * __restrict pwcs,
const char ** __restrict s, size_t n,
void * __restrict pspriv,
size_t * __restrict nresult)
{
int cnt;
const char *s0;
/* if pwcs is NULL, ignore n */
if (pwcs == NULL)
n = 1; /* arbitrary >0 value */
cnt = 0;
s0 = *s; /* to keep *s unchanged for now, use copy instead. */
while (n > 0) {
if (pwcs != NULL) {
*pwcs = (wchar_t)(unsigned char)*s0;
}
if (*s0 == '\0') {
s0 = NULL;
break;
}
s0++;
if (pwcs != NULL) {
pwcs++;
n--;
}
cnt++;
}
if (pwcs)
*s = s0;
*nresult = (size_t)cnt;
return (0);
}
static int
_citrus_NONE_ctype_mbstowcs(void * __restrict cl, wchar_t * __restrict wcs,
const char * __restrict s, size_t n,
size_t * __restrict nresult)
{
return (_citrus_NONE_ctype_mbsrtowcs(cl, wcs, (const char **)&s, n, NULL, nresult));
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_mbtowc(void * __restrict cl, wchar_t * __restrict pwc,
const char * __restrict s, size_t n,
int * __restrict nresult)
{
if (s == NULL) {
*nresult = 0; /* state independent */
return (0);
}
if (n == 0) {
return (EILSEQ);
}
if (pwc == NULL) {
if (*s == '\0') {
*nresult = 0;
} else {
*nresult = 1;
}
return (0);
}
*pwc = (wchar_t)(unsigned char)*s;
*nresult = *s == '\0' ? 0 : 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_wcrtomb(void * __restrict cl, char * __restrict s,
wchar_t wc, void * __restrict pspriv,
size_t * __restrict nresult)
{
if ((wc&~0xFFU) != 0) {
*nresult = (size_t)-1;
return (EILSEQ);
}
*nresult = 1;
if (s!=NULL)
*s = (char)wc;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_wcsrtombs(void * __restrict cl, char * __restrict s,
const wchar_t ** __restrict pwcs, size_t n,
void * __restrict pspriv,
size_t * __restrict nresult)
{
size_t count;
const wchar_t *pwcs0;
pwcs0 = *pwcs;
count = 0;
if (s == NULL)
n = 1;
while (n > 0) {
if ((*pwcs0 & ~0xFFU) != 0) {
*nresult = (size_t)-1;
return (EILSEQ);
}
if (s != NULL) {
*s++ = (char)*pwcs0;
n--;
}
if (*pwcs0 == L'\0') {
pwcs0 = NULL;
break;
}
count++;
pwcs0++;
}
if (s != NULL)
*pwcs = pwcs0;
*nresult = count;
return (0);
}
static int
_citrus_NONE_ctype_wcstombs(void * __restrict cl, char * __restrict s,
const wchar_t * __restrict pwcs, size_t n,
size_t * __restrict nresult)
{
return (_citrus_NONE_ctype_wcsrtombs(cl, s, (const wchar_t **)&pwcs, n, NULL, nresult));
}
static int
_citrus_NONE_ctype_wctomb(void * __restrict cl, char * __restrict s,
wchar_t wc, int * __restrict nresult)
{
int ret;
size_t nr;
if (s == 0) {
/*
* initialize state here.
* (nothing to do for us.)
*/
*nresult = 0; /* we're state independent */
return (0);
}
ret = _citrus_NONE_ctype_wcrtomb(cl, s, wc, NULL, &nr);
*nresult = (int)nr;
return (ret);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_btowc(_citrus_ctype_rec_t * __restrict cc,
int c, wint_t * __restrict wcresult)
{
if (c == EOF || c & ~0xFF)
*wcresult = WEOF;
else
*wcresult = (wint_t)c;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_ctype_wctob(_citrus_ctype_rec_t * __restrict cc,
wint_t wc, int * __restrict cresult)
{
if (wc == WEOF || wc & ~0xFF)
*cresult = EOF;
else
*cresult = (int)wc;
return (0);
}
/* ---------------------------------------------------------------------- */
_CITRUS_STDENC_DECLS(NONE);
_CITRUS_STDENC_DEF_OPS(NONE);
struct _citrus_stdenc_traits _citrus_NONE_stdenc_traits = {
0, /* et_state_size */
1, /* mb_cur_max */
};
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce,
const void *var, size_t lenvar,
struct _citrus_stdenc_traits * __restrict et)
{
et->et_state_size = 0;
et->et_mb_cur_max = 1;
ce->ce_closure = NULL;
return (0);
}
static void
/*ARGSUSED*/
_citrus_NONE_stdenc_uninit(struct _citrus_stdenc *ce)
{
}
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce,
void * __restrict ps)
{
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce,
_csid_t *csid, _index_t *idx,
const char **s, size_t n,
void *ps, size_t *nresult)
{
_DIAGASSERT(csid != NULL && idx != NULL);
if (n<1) {
*nresult = (size_t)-2;
return (0);
}
*csid = 0;
*idx = (_index_t)(unsigned char)*(*s)++;
*nresult = *idx == 0 ? 0 : 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce,
char *s, size_t n,
_csid_t csid, _index_t idx,
void *ps, size_t *nresult)
{
if (csid == _CITRUS_CSID_INVALID) {
*nresult = 0;
return (0);
}
if (n<1) {
*nresult = (size_t)-1;
return (E2BIG);
}
if (csid != 0 || (idx&0xFF) != idx)
return (EILSEQ);
*s = (char)idx;
*nresult = 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce,
_wc_t * __restrict pwc,
const char ** __restrict s, size_t n,
void * __restrict pspriv,
size_t * __restrict nresult)
{
if (s == NULL) {
*nresult = 0;
return (0);
}
if (n == 0) {
*nresult = (size_t)-2;
return (0);
}
if (pwc != NULL)
*pwc = (_wc_t)(unsigned char) **s;
*nresult = *s == '\0' ? 0 : 1;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce,
char * __restrict s, size_t n,
_wc_t wc, void * __restrict pspriv,
size_t * __restrict nresult)
{
if ((wc&~0xFFU) != 0) {
*nresult = (size_t)-1;
return (EILSEQ);
}
if (n==0) {
*nresult = (size_t)-1;
return (E2BIG);
}
*nresult = 1;
if (s!=NULL && n>0)
*s = (char)wc;
return (0);
}
static int
/*ARGSUSED*/
_citrus_NONE_stdenc_put_state_reset(struct _citrus_stdenc * __restrict ce,
char * __restrict s, size_t n,
void * __restrict pspriv,
size_t * __restrict nresult)
{
*nresult = 0;
return (0);
}