mskanji.c revision 129153
1129198Scognet/* 2129198Scognet * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. 3139735Simp * 4129198Scognet * ja_JP.SJIS locale table for BSD4.4/rune 5129198Scognet * version 1.0 6129198Scognet * (C) Sin'ichiro MIYATANI / Phase One, Inc 7129198Scognet * May 12, 1995 8129198Scognet * 9129198Scognet * Redistribution and use in source and binary forms, with or without 10129198Scognet * modification, are permitted provided that the following conditions 11129198Scognet * are met: 12129198Scognet * 1. Redistributions of source code must retain the above copyright 13129198Scognet * notice, this list of conditions and the following disclaimer. 14129198Scognet * 2. Redistributions in binary form must reproduce the above copyright 15129198Scognet * notice, this list of conditions and the following disclaimer in the 16129198Scognet * documentation and/or other materials provided with the distribution. 17129198Scognet * 3. All advertising materials mentioning features or use of this software 18129198Scognet * must display the following acknowledgement: 19129198Scognet * This product includes software developed by Phase One, Inc. 20129198Scognet * 4. The name of Phase One, Inc. may be used to endorse or promote products 21129198Scognet * derived from this software without specific prior written permission. 22129198Scognet * 23129198Scognet * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24129198Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25129198Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26129198Scognet * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27129198Scognet * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28129198Scognet * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29129198Scognet * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30129198Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31129198Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32129198Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33129198Scognet * SUCH DAMAGE. 34129198Scognet */ 35129198Scognet 36129198Scognet#if defined(LIBC_SCCS) && !defined(lint) 37129198Scognetstatic char sccsid[] = "@(#)mskanji.c 1.0 (Phase One) 5/5/95"; 38129198Scognet#endif /* LIBC_SCCS and not lint */ 39129198Scognet#include <sys/param.h> 40129198Scognet__FBSDID("$FreeBSD: head/lib/libc/locale/mskanji.c 129153 2004-05-12 14:09:04Z tjr $"); 41129198Scognet 42129198Scognet#include <errno.h> 43129198Scognet#include <runetype.h> 44129198Scognet#include <stdlib.h> 45129198Scognet#include <string.h> 46129198Scognet#include <wchar.h> 47129198Scognet#include "mblocal.h" 48129198Scognet 49129198Scognetint _MSKanji_init(_RuneLocale *); 50129198Scognetsize_t _MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t, 51129198Scognet mbstate_t * __restrict); 52129198Scognetint _MSKanji_mbsinit(const mbstate_t *); 53236991Simpsize_t _MSKanji_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict); 54129198Scognet 55129198Scognettypedef struct { 56129198Scognet int count; 57129198Scognet u_char bytes[2]; 58129198Scognet} _MSKanjiState; 59129198Scognet 60129198Scognetint 61129198Scognet_MSKanji_init(_RuneLocale *rl) 62129198Scognet{ 63129198Scognet 64129198Scognet __mbrtowc = _MSKanji_mbrtowc; 65129198Scognet __wcrtomb = _MSKanji_wcrtomb; 66129198Scognet __mbsinit = _MSKanji_mbsinit; 67129198Scognet _CurrentRuneLocale = rl; 68129198Scognet __mb_cur_max = 2; 69129198Scognet return (0); 70129198Scognet} 71129198Scognet 72129198Scognetint 73129198Scognet_MSKanji_mbsinit(const mbstate_t *ps) 74129198Scognet{ 75129198Scognet 76129198Scognet return (ps == NULL || ((const _MSKanjiState *)ps)->count == 0); 77129198Scognet} 78129198Scognet 79129198Scognetsize_t 80_MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n, 81 mbstate_t * __restrict ps) 82{ 83 _MSKanjiState *ms; 84 wchar_t wc; 85 int len, ocount; 86 size_t ncopy; 87 88 ms = (_MSKanjiState *)ps; 89 90 if (ms->count < 0 || ms->count > sizeof(ms->bytes)) { 91 errno = EINVAL; 92 return ((size_t)-1); 93 } 94 95 if (s == NULL) { 96 s = ""; 97 n = 1; 98 pwc = NULL; 99 } 100 101 ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(ms->bytes) - ms->count); 102 memcpy(ms->bytes + ms->count, s, ncopy); 103 ocount = ms->count; 104 ms->count += ncopy; 105 s = (char *)ms->bytes; 106 n = ms->count; 107 108 if (n == 0) 109 /* Incomplete multibyte sequence */ 110 return ((size_t)-2); 111 len = 1; 112 wc = *s++ & 0xff; 113 if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) { 114 if (n < 2) 115 /* Incomplete multibyte sequence */ 116 return ((size_t)-2); 117 if (*s == '\0') { 118 errno = EILSEQ; 119 return ((size_t)-1); 120 } 121 wc = (wc << 8) | (*s++ & 0xff); 122 len = 2; 123 } 124 if (pwc != NULL) 125 *pwc = wc; 126 ms->count = 0; 127 return (wc == L'\0' ? 0 : len - ocount); 128} 129 130size_t 131_MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps) 132{ 133 _MSKanjiState *ms; 134 int len, i; 135 136 ms = (_MSKanjiState *)ps; 137 138 if (ms->count != 0) { 139 errno = EINVAL; 140 return ((size_t)-1); 141 } 142 143 if (s == NULL) 144 /* Reset to initial shift state (no-op) */ 145 return (1); 146 len = (wc > 0x100) ? 2 : 1; 147 for (i = len; i-- > 0; ) 148 *s++ = wc >> (i << 3); 149 return (len); 150} 151