port/locale/euc.c

4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore * Copyright 2013 Garrett D'Amore <garrett@damore.org>
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Copyright (c) 1993
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *  The Regents of the University of California.  All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * This code is derived from software contributed to Berkeley by
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Paul Borman at Krystal Technologies.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Redistribution and use in source and binary forms, with or without
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * modification, are permitted provided that the following conditions
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * are met:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 1. Redistributions of source code must retain the above copyright
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    notice, this list of conditions and the following disclaimer.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 2. Redistributions in binary form must reproduce the above copyright
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    notice, this list of conditions and the following disclaimer in the
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    documentation and/or other materials provided with the distribution.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 4. Neither the name of the University nor the names of its contributors
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    may be used to endorse or promote products derived from this software
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *    without specific prior written permission.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * SUCH DAMAGE.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include "lint.h"
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <errno.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <limits.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <stdlib.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <string.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <wchar.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include <sys/types.h>
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore#include <sys/euc.h>
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#include "mblocal.h"
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore#include "lctype.h"
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_mbrtowc_impl(wchar_t *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    const char *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    size_t, mbstate_t *_RESTRICT_KYWD, uint8_t, uint8_t, uint8_t, uint8_t);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_wcrtomb_impl(char *_RESTRICT_KYWD, wchar_t,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    mbstate_t *_RESTRICT_KYWD, uint8_t, uint8_t, uint8_t, uint8_t);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_CN_mbrtowc(wchar_t *_RESTRICT_KYWD,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore            const char *_RESTRICT_KYWD,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore            size_t, mbstate_t *_RESTRICT_KYWD);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_JP_mbrtowc(wchar_t *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            const char *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            size_t, mbstate_t *_RESTRICT_KYWD);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_KR_mbrtowc(wchar_t *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            const char *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            size_t, mbstate_t *_RESTRICT_KYWD);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_TW_mbrtowc(wchar_t *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            const char *_RESTRICT_KYWD,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            size_t, mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_CN_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore            mbstate_t *_RESTRICT_KYWD);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_JP_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_KR_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t   _EUC_TW_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_CN_mbsnrtowcs(wchar_t *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const char **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_JP_mbsnrtowcs(wchar_t *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const char **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_KR_mbsnrtowcs(wchar_t *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const char **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_TW_mbsnrtowcs(wchar_t *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const char **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_CN_wcsnrtombs(char *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const wchar_t **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_JP_wcsnrtombs(char *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const wchar_t **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_KR_wcsnrtombs(char *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const wchar_t **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t   _EUC_TW_wcsnrtombs(char *_RESTRICT_KYWD,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            const wchar_t **_RESTRICT_KYWD, size_t, size_t,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore            mbstate_t *_RESTRICT_KYWD);
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic int  _EUC_mbsinit(const mbstate_t *);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoretypedef struct {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    wchar_t ch;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    int set;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    int want;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore} _EucState;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amoreint
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_mbsinit(const mbstate_t *ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (ps == NULL || ((const _EucState *)ps)->want == 0);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore/*
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore * EUC-CN uses CS0, CS1 and CS2 (4 bytes).
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore */
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorevoid
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_CN_init(struct lc_ctype *lct)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbrtowc = _EUC_CN_mbrtowc;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcrtomb = _EUC_CN_wcrtomb;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsnrtowcs = _EUC_CN_mbsnrtowcs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcsnrtombs = _EUC_CN_wcsnrtombs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsinit = _EUC_mbsinit;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_max_mblen = 4;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_is_ascii = 0;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_CN_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    size_t n, mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_CN_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    const char **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_CN_mbrtowc));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_CN_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_CN_wcsnrtombs(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_CN_wcrtomb));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore/*
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore * EUC-KR uses only CS0 and CS1.
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore */
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorevoid
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_KR_init(struct lc_ctype *lct)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbrtowc = _EUC_KR_mbrtowc;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcrtomb = _EUC_KR_wcrtomb;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsnrtowcs = _EUC_KR_mbsnrtowcs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcsnrtombs = _EUC_KR_wcsnrtombs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsinit = _EUC_mbsinit;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_max_mblen = 2;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_is_ascii = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_KR_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    size_t n, mbstate_t *_RESTRICT_KYWD ps)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_mbrtowc_impl(pwc, s, n, ps, 0, 0, 0, 0));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_KR_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    const char **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_KR_mbrtowc));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_KR_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_wcrtomb_impl(s, wc, ps, 0, 0, 0, 0));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_KR_wcsnrtombs(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_KR_wcrtomb));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore/*
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore * EUC-JP uses CS0, CS1, CS2, and CS3.
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore */
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorevoid
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_JP_init(struct lc_ctype *lct)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbrtowc = _EUC_JP_mbrtowc;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcrtomb = _EUC_JP_wcrtomb;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsnrtowcs = _EUC_JP_mbsnrtowcs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcsnrtombs = _EUC_JP_wcsnrtombs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsinit = _EUC_mbsinit;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_max_mblen = 3;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_is_ascii = 0;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_JP_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    size_t n, mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 2, SS3, 3));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_JP_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    const char **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_JP_mbrtowc));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_JP_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 2, SS3, 3));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_JP_wcsnrtombs(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_JP_wcrtomb));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore/*
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore * EUC-TW uses CS0, CS1, and CS2.
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore */
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorevoid
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_TW_init(struct lc_ctype *lct)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbrtowc = _EUC_TW_mbrtowc;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcrtomb = _EUC_TW_wcrtomb;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsnrtowcs = _EUC_TW_mbsnrtowcs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_wcsnrtombs = _EUC_TW_wcsnrtombs;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_mbsinit = _EUC_mbsinit;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_max_mblen = 4;
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    lct->lc_is_ascii = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_TW_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t n, mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_mbrtowc_impl(pwc, s, n, ps, SS2, 4, 0, 0));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_TW_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    const char **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__mbsnrtowcs_std(dst, src, nms, len, ps, _EUC_TW_mbrtowc));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_TW_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    mbstate_t *_RESTRICT_KYWD ps)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore{
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (_EUC_wcrtomb_impl(s, wc, ps, SS2, 4, 0, 0));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore}
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amorestatic size_t
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore_EUC_TW_wcsnrtombs(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD ps)
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore{
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    return (__wcsnrtombs_std(dst, src, nwc, len, ps, _EUC_TW_wcrtomb));
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore}
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore/*
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore * Common EUC code.
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_mbrtowc_impl(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    size_t n, mbstate_t *_RESTRICT_KYWD ps,
2d08521bd15501c8370ba2153b9cca4f094979d0Garrett D'Amore    uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    _EucState *es;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    int i, want;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    wchar_t wc;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    unsigned char ch;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    es = (_EucState *)ps;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    if (es->want < 0 || es->want > MB_CUR_MAX) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        errno = EINVAL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        return ((size_t)-1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (s == NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        s = "";
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        n = 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        pwc = NULL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (n == 0)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        /* Incomplete multibyte sequence */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        return ((size_t)-2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (es->want == 0) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        /* Fast path for plain ASCII (CS0) */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        if (((ch = (unsigned char)*s) & 0x80) == 0) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            if (pwc != NULL)
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore                *pwc = ch;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            return (ch != '\0' ? 1 : 0);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        if (ch >= 0xa1) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            /* CS1 */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            want = 2;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        } else if (ch == cs2) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            want = cs2width;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        } else if (ch == cs3) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            want = cs3width;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        } else {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            errno = EILSEQ;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            return ((size_t)-1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        es->want = want;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        es->ch = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    } else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        want = es->want;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        wc = es->ch;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    for (i = 0; i < MIN(want, n); i++) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        wc <<= 8;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        wc |= *s;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        s++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (i < want) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        /* Incomplete multibyte sequence */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        es->want = want - i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        es->ch = wc;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        return ((size_t)-2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (pwc != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        *pwc = wc;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    es->want = 0;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    return (wc == L'\0' ? 0 : want);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic size_t
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore_EUC_wcrtomb_impl(char *_RESTRICT_KYWD s, wchar_t wc,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    mbstate_t *_RESTRICT_KYWD ps,
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    uint8_t cs2, uint8_t cs2width, uint8_t cs3, uint8_t cs3width)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    _EucState *es;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    int i, len;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    wchar_t nm;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    es = (_EucState *)ps;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (es->want != 0) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        errno = EINVAL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        return ((size_t)-1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    if (s == NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        /* Reset to initial shift state (no-op) */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore        return (1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    if ((wc & ~0x7f) == 0) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        /* Fast path for plain ASCII (CS0) */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        *s = (char)wc;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        return (1);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    /* Determine the "length" */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    if ((unsigned)wc > 0xffffff) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        len = 4;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    } else if ((unsigned)wc > 0xffff) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        len = 3;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    } else if ((unsigned)wc > 0xff) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        len = 2;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    } else {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        len = 1;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    if (len > MB_CUR_MAX) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        errno = EILSEQ;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        return ((size_t)-1);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    /* This first check excludes CS1, which is implicitly valid. */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    if ((wc < 0xa100) || (wc > 0xffff)) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        /* Check for valid CS2 or CS3 */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        nm = (wc >> ((len - 1) * 8));
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        if (nm == cs2) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            if (len != cs2width) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore                errno = EILSEQ;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore                return ((size_t)-1);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        } else if (nm == cs3) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            if (len != cs3width) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore                errno = EILSEQ;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore                return ((size_t)-1);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        } else {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            errno = EILSEQ;
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore            return ((size_t)-1);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    }
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    /* Stash the bytes, least significant last */
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore    for (i = len - 1; i >= 0; i--) {
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        s[i] = (wc & 0xff);
9d04e500a2b8dcd13abf3d813c6796aecd7a9689Garrett D'Amore        wc >>= 8;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore    return (len);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}