d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
255 lines
6.3 KiB
C
255 lines
6.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright 2013 Garrett D'Amore <garrett@damore.org>
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* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 2002-2004 Tim J. Robbins
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* All rights reserved.
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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* Portions of this software were developed by David Chisnall
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* PRC National Standard GB 18030-2000 encoding of Chinese text.
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*
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* See gb18030(5) for details.
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*/
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#include <sys/param.h>
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__FBSDID("$FreeBSD$");
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#include <errno.h>
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#include <runetype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include "mblocal.h"
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static size_t _GB18030_mbrtowc(wchar_t * __restrict, const char * __restrict,
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size_t, mbstate_t * __restrict);
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static int _GB18030_mbsinit(const mbstate_t *);
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static size_t _GB18030_wcrtomb(char * __restrict, wchar_t,
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mbstate_t * __restrict);
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static size_t _GB18030_mbsnrtowcs(wchar_t * __restrict,
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const char ** __restrict, size_t, size_t,
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mbstate_t * __restrict);
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static size_t _GB18030_wcsnrtombs(char * __restrict,
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const wchar_t ** __restrict, size_t, size_t,
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mbstate_t * __restrict);
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typedef struct {
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int count;
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u_char bytes[4];
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} _GB18030State;
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int
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_GB18030_init(struct xlocale_ctype *l, _RuneLocale *rl)
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{
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l->__mbrtowc = _GB18030_mbrtowc;
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l->__wcrtomb = _GB18030_wcrtomb;
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l->__mbsinit = _GB18030_mbsinit;
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l->__mbsnrtowcs = _GB18030_mbsnrtowcs;
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l->__wcsnrtombs = _GB18030_wcsnrtombs;
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l->runes = rl;
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l->__mb_cur_max = 4;
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l->__mb_sb_limit = 128;
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return (0);
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}
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static int
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_GB18030_mbsinit(const mbstate_t *ps)
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{
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return (ps == NULL || ((const _GB18030State *)ps)->count == 0);
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}
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static size_t
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_GB18030_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
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size_t n, mbstate_t * __restrict ps)
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{
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_GB18030State *gs;
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wchar_t wch;
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int ch, len, ocount;
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size_t ncopy;
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gs = (_GB18030State *)ps;
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if (gs->count < 0 || gs->count > sizeof(gs->bytes)) {
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errno = EINVAL;
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return ((size_t)-1);
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}
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if (s == NULL) {
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s = "";
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n = 1;
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pwc = NULL;
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}
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ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(gs->bytes) - gs->count);
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memcpy(gs->bytes + gs->count, s, ncopy);
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ocount = gs->count;
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gs->count += ncopy;
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s = (char *)gs->bytes;
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n = gs->count;
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if (n == 0)
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/* Incomplete multibyte sequence */
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return ((size_t)-2);
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/*
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* Single byte: [00-7f]
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* Two byte: [81-fe][40-7e,80-fe]
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* Four byte: [81-fe][30-39][81-fe][30-39]
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*/
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ch = (unsigned char)*s++;
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if (ch <= 0x7f) {
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len = 1;
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wch = ch;
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} else if (ch >= 0x81 && ch <= 0xfe) {
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wch = ch;
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if (n < 2)
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return ((size_t)-2);
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ch = (unsigned char)*s++;
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if ((ch >= 0x40 && ch <= 0x7e) || (ch >= 0x80 && ch <= 0xfe)) {
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wch = (wch << 8) | ch;
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len = 2;
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} else if (ch >= 0x30 && ch <= 0x39) {
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/*
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* Strip high bit off the wide character we will
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* eventually output so that it is positive when
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* cast to wint_t on 32-bit twos-complement machines.
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*/
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wch = ((wch & 0x7f) << 8) | ch;
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if (n < 3)
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return ((size_t)-2);
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ch = (unsigned char)*s++;
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if (ch < 0x81 || ch > 0xfe)
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goto ilseq;
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wch = (wch << 8) | ch;
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if (n < 4)
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return ((size_t)-2);
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ch = (unsigned char)*s++;
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if (ch < 0x30 || ch > 0x39)
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goto ilseq;
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wch = (wch << 8) | ch;
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len = 4;
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} else
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goto ilseq;
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} else
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goto ilseq;
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if (pwc != NULL)
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*pwc = wch;
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gs->count = 0;
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return (wch == L'\0' ? 0 : len - ocount);
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ilseq:
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errno = EILSEQ;
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return ((size_t)-1);
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}
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static size_t
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_GB18030_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
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{
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_GB18030State *gs;
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size_t len;
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int c;
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gs = (_GB18030State *)ps;
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if (gs->count != 0) {
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errno = EINVAL;
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return ((size_t)-1);
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}
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if (s == NULL)
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/* Reset to initial shift state (no-op) */
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return (1);
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if ((wc & ~0x7fffffff) != 0)
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goto ilseq;
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if (wc & 0x7f000000) {
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/* Replace high bit that mbrtowc() removed. */
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wc |= 0x80000000;
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c = (wc >> 24) & 0xff;
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if (c < 0x81 || c > 0xfe)
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goto ilseq;
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*s++ = c;
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c = (wc >> 16) & 0xff;
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if (c < 0x30 || c > 0x39)
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goto ilseq;
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*s++ = c;
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c = (wc >> 8) & 0xff;
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if (c < 0x81 || c > 0xfe)
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goto ilseq;
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*s++ = c;
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c = wc & 0xff;
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if (c < 0x30 || c > 0x39)
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goto ilseq;
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*s++ = c;
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len = 4;
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} else if (wc & 0x00ff0000)
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goto ilseq;
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else if (wc & 0x0000ff00) {
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c = (wc >> 8) & 0xff;
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if (c < 0x81 || c > 0xfe)
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goto ilseq;
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*s++ = c;
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c = wc & 0xff;
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if (c < 0x40 || c == 0x7f || c == 0xff)
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goto ilseq;
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*s++ = c;
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len = 2;
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} else if (wc <= 0x7f) {
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*s++ = wc;
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len = 1;
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} else
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goto ilseq;
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return (len);
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ilseq:
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errno = EILSEQ;
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return ((size_t)-1);
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}
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static size_t
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_GB18030_mbsnrtowcs(wchar_t * __restrict dst,
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const char ** __restrict src, size_t nms, size_t len,
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mbstate_t * __restrict ps)
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{
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return (__mbsnrtowcs_std(dst, src, nms, len, ps, _GB18030_mbrtowc));
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}
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static size_t
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_GB18030_wcsnrtombs(char * __restrict dst,
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const wchar_t ** __restrict src, size_t nwc, size_t len,
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mbstate_t * __restrict ps)
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{
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return (__wcsnrtombs_std(dst, src, nwc, len, ps, _GB18030_wcrtomb));
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}
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