1115626Sache/*- 2128004Stjr * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. 3115626Sache * Copyright (c) 1993 4115626Sache * The Regents of the University of California. All rights reserved. 5115626Sache * 6115626Sache * This code is derived from software contributed to Berkeley by 7115626Sache * Paul Borman at Krystal Technologies. 8115626Sache * 9227753Stheraven * Copyright (c) 2011 The FreeBSD Foundation 10227753Stheraven * All rights reserved. 11227753Stheraven * Portions of this software were developed by David Chisnall 12227753Stheraven * under sponsorship from the FreeBSD Foundation. 13227753Stheraven * 14115626Sache * Redistribution and use in source and binary forms, with or without 15115626Sache * modification, are permitted provided that the following conditions 16115626Sache * are met: 17115626Sache * 1. Redistributions of source code must retain the above copyright 18115626Sache * notice, this list of conditions and the following disclaimer. 19115626Sache * 2. Redistributions in binary form must reproduce the above copyright 20115626Sache * notice, this list of conditions and the following disclaimer in the 21115626Sache * documentation and/or other materials provided with the distribution. 22115626Sache * 4. Neither the name of the University nor the names of its contributors 23115626Sache * may be used to endorse or promote products derived from this software 24115626Sache * without specific prior written permission. 25115626Sache * 26115626Sache * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27115626Sache * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28115626Sache * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29115626Sache * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30115626Sache * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31115626Sache * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32115626Sache * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33115626Sache * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34115626Sache * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35115626Sache * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36115626Sache * SUCH DAMAGE. 37115626Sache */ 38115626Sache 39142654Sphantom#include <sys/cdefs.h> 40115626Sache__FBSDID("$FreeBSD$"); 41115626Sache 42142654Sphantom#include <sys/types.h> 43128155Stjr#include <errno.h> 44122103Stjr#include <runetype.h> 45115626Sache#include <stdlib.h> 46128004Stjr#include <string.h> 47122103Stjr#include <wchar.h> 48129153Stjr#include "mblocal.h" 49115626Sache 50172619Sacheextern int __mb_sb_limit; 51172619Sache 52142654Sphantomstatic size_t _GBK_mbrtowc(wchar_t * __restrict, const char * __restrict, 53142654Sphantom size_t, mbstate_t * __restrict); 54142654Sphantomstatic int _GBK_mbsinit(const mbstate_t *); 55142654Sphantomstatic size_t _GBK_wcrtomb(char * __restrict, wchar_t, 56142654Sphantom mbstate_t * __restrict); 57122103Stjr 58128004Stjrtypedef struct { 59129334Stjr wchar_t ch; 60128004Stjr} _GBKState; 61128004Stjr 62115626Sacheint 63227753Stheraven_GBK_init(struct xlocale_ctype *l, _RuneLocale *rl) 64115626Sache{ 65122103Stjr 66227753Stheraven l->__mbrtowc = _GBK_mbrtowc; 67227753Stheraven l->__wcrtomb = _GBK_wcrtomb; 68227753Stheraven l->__mbsinit = _GBK_mbsinit; 69227753Stheraven l->runes = rl; 70227753Stheraven l->__mb_cur_max = 2; 71227753Stheraven l->__mb_sb_limit = 128; 72115626Sache return (0); 73115626Sache} 74115626Sache 75142654Sphantomstatic int 76128004Stjr_GBK_mbsinit(const mbstate_t *ps) 77128004Stjr{ 78128004Stjr 79129334Stjr return (ps == NULL || ((const _GBKState *)ps)->ch == 0); 80128004Stjr} 81128004Stjr 82122103Stjrstatic __inline int 83122103Stjr_gbk_check(u_int c) 84115626Sache{ 85122103Stjr 86115626Sache c &= 0xff; 87123665Sache return ((c >= 0x81 && c <= 0xfe) ? 2 : 1); 88115626Sache} 89115626Sache 90142654Sphantomstatic size_t 91122103Stjr_GBK_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n, 92128004Stjr mbstate_t * __restrict ps) 93115626Sache{ 94128004Stjr _GBKState *gs; 95122103Stjr wchar_t wc; 96129334Stjr size_t len; 97115626Sache 98128004Stjr gs = (_GBKState *)ps; 99128004Stjr 100129334Stjr if ((gs->ch & ~0xFF) != 0) { 101129334Stjr /* Bad conversion state. */ 102128155Stjr errno = EINVAL; 103128155Stjr return ((size_t)-1); 104128155Stjr } 105128155Stjr 106128004Stjr if (s == NULL) { 107128004Stjr s = ""; 108128004Stjr n = 1; 109128004Stjr pwc = NULL; 110128004Stjr } 111128004Stjr 112129334Stjr if (n == 0) 113122103Stjr /* Incomplete multibyte sequence */ 114122103Stjr return ((size_t)-2); 115129334Stjr 116129334Stjr if (gs->ch != 0) { 117129334Stjr if (*s == '\0') { 118129334Stjr errno = EILSEQ; 119129334Stjr return ((size_t)-1); 120129334Stjr } 121129334Stjr wc = (gs->ch << 8) | (*s & 0xFF); 122129334Stjr if (pwc != NULL) 123129334Stjr *pwc = wc; 124129334Stjr gs->ch = 0; 125129334Stjr return (1); 126129117Stjr } 127129334Stjr 128129334Stjr len = (size_t)_gbk_check(*s); 129129334Stjr wc = *s++ & 0xff; 130129334Stjr if (len == 2) { 131129334Stjr if (n < 2) { 132129334Stjr /* Incomplete multibyte sequence */ 133129334Stjr gs->ch = wc; 134129334Stjr return ((size_t)-2); 135129334Stjr } 136129334Stjr if (*s == '\0') { 137129334Stjr errno = EILSEQ; 138129334Stjr return ((size_t)-1); 139129334Stjr } 140129334Stjr wc = (wc << 8) | (*s++ & 0xff); 141129334Stjr if (pwc != NULL) 142129334Stjr *pwc = wc; 143129334Stjr return (2); 144129334Stjr } else { 145129334Stjr if (pwc != NULL) 146129334Stjr *pwc = wc; 147129334Stjr return (wc == L'\0' ? 0 : 1); 148129334Stjr } 149115626Sache} 150115626Sache 151142654Sphantomstatic size_t 152128155Stjr_GBK_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps) 153115626Sache{ 154128155Stjr _GBKState *gs; 155122103Stjr 156128155Stjr gs = (_GBKState *)ps; 157128155Stjr 158129334Stjr if (gs->ch != 0) { 159128155Stjr errno = EINVAL; 160128155Stjr return ((size_t)-1); 161128155Stjr } 162128155Stjr 163122103Stjr if (s == NULL) 164122103Stjr /* Reset to initial shift state (no-op) */ 165122103Stjr return (1); 166122103Stjr if (wc & 0x8000) { 167122103Stjr *s++ = (wc >> 8) & 0xff; 168122103Stjr *s = wc & 0xff; 169122103Stjr return (2); 170115626Sache } 171122103Stjr *s = wc & 0xff; 172122103Stjr return (1); 173115626Sache} 174