1 /* 2 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Paul Borman at Krystal Technologies. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 36 * Use is subject to license terms. 37 */ 38 39 #include "lint.h" 40 #include <sys/types.h> 41 #include <errno.h> 42 #include "runetype.h" 43 #include <stdlib.h> 44 #include <string.h> 45 #include <wchar.h> 46 #include "mblocal.h" 47 48 static size_t _GBK_mbrtowc(wchar_t *_RESTRICT_KYWD, 49 const char *_RESTRICT_KYWD, 50 size_t, mbstate_t *_RESTRICT_KYWD); 51 static int _GBK_mbsinit(const mbstate_t *); 52 static size_t _GBK_wcrtomb(char *_RESTRICT_KYWD, wchar_t, 53 mbstate_t *_RESTRICT_KYWD); 54 55 typedef struct { 56 wchar_t ch; 57 } _GBKState; 58 59 int 60 _GBK_init(_RuneLocale *rl) 61 { 62 63 __mbrtowc = _GBK_mbrtowc; 64 __wcrtomb = _GBK_wcrtomb; 65 __mbsinit = _GBK_mbsinit; 66 _CurrentRuneLocale = rl; 67 __ctype[520] = 2; 68 return (0); 69 } 70 71 static int 72 _GBK_mbsinit(const mbstate_t *ps) 73 { 74 75 return (ps == NULL || ((const _GBKState *)ps)->ch == 0); 76 } 77 78 static int 79 _gbk_check(uint_t c) 80 { 81 82 c &= 0xff; 83 return ((c >= 0x81 && c <= 0xfe) ? 2 : 1); 84 } 85 86 static size_t 87 _GBK_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, 88 size_t n, mbstate_t *_RESTRICT_KYWD ps) 89 { 90 _GBKState *gs; 91 wchar_t wc; 92 size_t len; 93 94 gs = (_GBKState *)ps; 95 96 if ((gs->ch & ~0xFF) != 0) { 97 /* Bad conversion state. */ 98 errno = EINVAL; 99 return ((size_t)-1); 100 } 101 102 if (s == NULL) { 103 s = ""; 104 n = 1; 105 pwc = NULL; 106 } 107 108 if (n == 0) 109 /* Incomplete multibyte sequence */ 110 return ((size_t)-2); 111 112 if (gs->ch != 0) { 113 if (*s == '\0') { 114 errno = EILSEQ; 115 return ((size_t)-1); 116 } 117 wc = (gs->ch << 8) | (*s & 0xFF); 118 if (pwc != NULL) 119 *pwc = wc; 120 gs->ch = 0; 121 return (1); 122 } 123 124 len = (size_t)_gbk_check(*s); 125 wc = *s++ & 0xff; 126 if (len == 2) { 127 if (n < 2) { 128 /* Incomplete multibyte sequence */ 129 gs->ch = wc; 130 return ((size_t)-2); 131 } 132 if (*s == '\0') { 133 errno = EILSEQ; 134 return ((size_t)-1); 135 } 136 wc = (wc << 8) | (*s++ & 0xff); 137 if (pwc != NULL) 138 *pwc = wc; 139 return (2); 140 } else { 141 if (pwc != NULL) 142 *pwc = wc; 143 return (wc == L'\0' ? 0 : 1); 144 } 145 } 146 147 static size_t 148 _GBK_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc, mbstate_t *_RESTRICT_KYWD ps) 149 { 150 _GBKState *gs; 151 152 gs = (_GBKState *)ps; 153 154 if (gs->ch != 0) { 155 errno = EINVAL; 156 return ((size_t)-1); 157 } 158 159 if (s == NULL) 160 /* Reset to initial shift state (no-op) */ 161 return (1); 162 if (wc & 0x8000) { 163 *s++ = (wc >> 8) & 0xff; 164 *s = wc & 0xff; 165 return (2); 166 } 167 *s = wc & 0xff; 168 return (1); 169 } 170