5e53a4f90f
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.
651 lines
15 KiB
C
651 lines
15 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: citrus_hz.c,v 1.2 2008/06/14 16:01:07 tnozaki Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c)2004, 2006 Citrus Project,
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* All rights reserved.
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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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#include <sys/cdefs.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <errno.h>
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#include <limits.h>
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#include <stddef.h>
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#include <stdint.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 "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_module.h"
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#include "citrus_stdenc.h"
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#include "citrus_hz.h"
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#include "citrus_prop.h"
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/*
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* wchar_t mapping:
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*
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* CTRL/ASCII 00000000 00000000 00000000 gxxxxxxx
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* GB2312 00000000 00000000 0xxxxxxx gxxxxxxx
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* 94/96*n (~M) 0mmmmmmm 0xxxxxxx 0xxxxxxx gxxxxxxx
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*/
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#define ESCAPE_CHAR '~'
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typedef enum {
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CTRL = 0, ASCII = 1, GB2312 = 2, CS94 = 3, CS96 = 4
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} charset_t;
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typedef struct {
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int start;
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int end;
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int width;
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} range_t;
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static const range_t ranges[] = {
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#define RANGE(start, end) { start, end, (end - start) + 1 }
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/* CTRL */ RANGE(0x00, 0x1F),
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/* ASCII */ RANGE(0x20, 0x7F),
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/* GB2312 */ RANGE(0x21, 0x7E),
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/* CS94 */ RANGE(0x21, 0x7E),
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/* CS96 */ RANGE(0x20, 0x7F),
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#undef RANGE
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};
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typedef struct escape_t escape_t;
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typedef struct {
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charset_t charset;
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escape_t *escape;
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ssize_t length;
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#define ROWCOL_MAX 3
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} graphic_t;
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typedef TAILQ_HEAD(escape_list, escape_t) escape_list;
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struct escape_t {
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TAILQ_ENTRY(escape_t) entry;
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escape_list *set;
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graphic_t *left;
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graphic_t *right;
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int ch;
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};
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#define GL(escape) ((escape)->left)
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#define GR(escape) ((escape)->right)
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#define SET(escape) ((escape)->set)
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#define ESC(escape) ((escape)->ch)
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#define INIT(escape) (TAILQ_FIRST(SET(escape)))
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static __inline escape_t *
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find_escape(escape_list *set, int ch)
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{
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escape_t *escape;
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TAILQ_FOREACH(escape, set, entry) {
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if (ESC(escape) == ch)
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break;
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}
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return (escape);
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}
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typedef struct {
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escape_list e0;
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escape_list e1;
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graphic_t *ascii;
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graphic_t *gb2312;
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} _HZEncodingInfo;
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#define E0SET(ei) (&(ei)->e0)
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#define E1SET(ei) (&(ei)->e1)
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#define INIT0(ei) (TAILQ_FIRST(E0SET(ei)))
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#define INIT1(ei) (TAILQ_FIRST(E1SET(ei)))
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typedef struct {
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escape_t *inuse;
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int chlen;
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char ch[ROWCOL_MAX];
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} _HZState;
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#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
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#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
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#define _FUNCNAME(m) _citrus_HZ_##m
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#define _ENCODING_INFO _HZEncodingInfo
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#define _ENCODING_STATE _HZState
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#define _ENCODING_MB_CUR_MAX(_ei_) MB_LEN_MAX
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#define _ENCODING_IS_STATE_DEPENDENT 1
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#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) ((_ps_)->inuse == NULL)
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static __inline void
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_citrus_HZ_init_state(_HZEncodingInfo * __restrict ei,
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_HZState * __restrict psenc)
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{
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psenc->chlen = 0;
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psenc->inuse = INIT0(ei);
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}
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#if 0
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static __inline void
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/*ARGSUSED*/
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_citrus_HZ_pack_state(_HZEncodingInfo * __restrict ei __unused,
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void *__restrict pspriv, const _HZState * __restrict psenc)
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{
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memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_HZ_unpack_state(_HZEncodingInfo * __restrict ei __unused,
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_HZState * __restrict psenc, const void * __restrict pspriv)
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{
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memcpy((void *)psenc, pspriv, sizeof(*psenc));
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}
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#endif
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static int
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_citrus_HZ_mbrtowc_priv(_HZEncodingInfo * __restrict ei,
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wchar_t * __restrict pwc, char ** __restrict s, size_t n,
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_HZState * __restrict psenc, size_t * __restrict nresult)
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{
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escape_t *candidate, *init;
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graphic_t *graphic;
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const range_t *range;
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char *s0;
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wchar_t wc;
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int bit, ch, head, len, tail;
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if (*s == NULL) {
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_citrus_HZ_init_state(ei, psenc);
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*nresult = 1;
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return (0);
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}
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s0 = *s;
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if (psenc->chlen < 0 || psenc->inuse == NULL)
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return (EINVAL);
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wc = (wchar_t)0;
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bit = head = tail = 0;
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graphic = NULL;
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for (len = 0; len <= MB_LEN_MAX;) {
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if (psenc->chlen == tail) {
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if (n-- < 1) {
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*s = s0;
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*nresult = (size_t)-2;
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return (0);
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}
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psenc->ch[psenc->chlen++] = *s0++;
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++len;
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}
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ch = (unsigned char)psenc->ch[tail++];
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if (tail == 1) {
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if ((ch & ~0x80) <= 0x1F) {
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if (psenc->inuse != INIT0(ei))
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break;
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wc = (wchar_t)ch;
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goto done;
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}
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if (ch & 0x80) {
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graphic = GR(psenc->inuse);
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bit = 0x80;
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ch &= ~0x80;
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} else {
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graphic = GL(psenc->inuse);
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if (ch == ESCAPE_CHAR)
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continue;
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bit = 0x0;
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}
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if (graphic == NULL)
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break;
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} else if (tail == 2 && psenc->ch[0] == ESCAPE_CHAR) {
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if (tail < psenc->chlen)
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return (EINVAL);
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if (ch == ESCAPE_CHAR) {
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++head;
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} else if (ch == '\n') {
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if (psenc->inuse != INIT0(ei))
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break;
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tail = psenc->chlen = 0;
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continue;
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} else {
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candidate = NULL;
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init = INIT0(ei);
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if (psenc->inuse == init) {
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init = INIT1(ei);
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} else if (INIT(psenc->inuse) == init) {
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if (ESC(init) != ch)
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break;
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candidate = init;
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}
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if (candidate == NULL) {
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candidate = find_escape(
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SET(psenc->inuse), ch);
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if (candidate == NULL) {
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if (init == NULL ||
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ESC(init) != ch)
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break;
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candidate = init;
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}
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}
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psenc->inuse = candidate;
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tail = psenc->chlen = 0;
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continue;
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}
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} else if (ch & 0x80) {
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if (graphic != GR(psenc->inuse))
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break;
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ch &= ~0x80;
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} else {
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if (graphic != GL(psenc->inuse))
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break;
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}
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range = &ranges[(size_t)graphic->charset];
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if (range->start > ch || range->end < ch)
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break;
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wc <<= 8;
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wc |= ch;
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if (graphic->length == (tail - head)) {
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if (graphic->charset > GB2312)
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bit |= ESC(psenc->inuse) << 24;
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wc |= bit;
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goto done;
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}
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}
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*nresult = (size_t)-1;
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return (EILSEQ);
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done:
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if (tail < psenc->chlen)
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return (EINVAL);
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*s = s0;
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if (pwc != NULL)
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*pwc = wc;
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psenc->chlen = 0;
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*nresult = (wc == 0) ? 0 : len;
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return (0);
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}
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static int
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_citrus_HZ_wcrtomb_priv(_HZEncodingInfo * __restrict ei,
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char * __restrict s, size_t n, wchar_t wc,
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_HZState * __restrict psenc, size_t * __restrict nresult)
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{
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escape_t *candidate, *init;
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graphic_t *graphic;
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const range_t *range;
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size_t len;
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int bit, ch;
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if (psenc->chlen != 0 || psenc->inuse == NULL)
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return (EINVAL);
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if (wc & 0x80) {
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bit = 0x80;
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wc &= ~0x80;
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} else {
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bit = 0x0;
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}
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if ((uint32_t)wc <= 0x1F) {
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candidate = INIT0(ei);
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graphic = (bit == 0) ? candidate->left : candidate->right;
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if (graphic == NULL)
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goto ilseq;
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range = &ranges[(size_t)CTRL];
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len = 1;
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} else if ((uint32_t)wc <= 0x7F) {
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graphic = ei->ascii;
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if (graphic == NULL)
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goto ilseq;
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candidate = graphic->escape;
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range = &ranges[(size_t)graphic->charset];
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len = graphic->length;
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} else if ((uint32_t)wc <= 0x7F7F) {
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graphic = ei->gb2312;
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if (graphic == NULL)
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goto ilseq;
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candidate = graphic->escape;
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range = &ranges[(size_t)graphic->charset];
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len = graphic->length;
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} else {
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ch = (wc >> 24) & 0xFF;
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candidate = find_escape(E0SET(ei), ch);
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if (candidate == NULL) {
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candidate = find_escape(E1SET(ei), ch);
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if (candidate == NULL)
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goto ilseq;
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}
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wc &= ~0xFF000000;
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graphic = (bit == 0) ? candidate->left : candidate->right;
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if (graphic == NULL)
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goto ilseq;
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range = &ranges[(size_t)graphic->charset];
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len = graphic->length;
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}
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if (psenc->inuse != candidate) {
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init = INIT0(ei);
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if (SET(psenc->inuse) == SET(candidate)) {
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if (INIT(psenc->inuse) != init ||
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psenc->inuse == init || candidate == init)
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init = NULL;
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} else if (candidate == (init = INIT(candidate))) {
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init = NULL;
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}
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if (init != NULL) {
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if (n < 2)
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return (E2BIG);
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n -= 2;
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psenc->ch[psenc->chlen++] = ESCAPE_CHAR;
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psenc->ch[psenc->chlen++] = ESC(init);
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}
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if (n < 2)
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return (E2BIG);
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n -= 2;
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psenc->ch[psenc->chlen++] = ESCAPE_CHAR;
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psenc->ch[psenc->chlen++] = ESC(candidate);
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psenc->inuse = candidate;
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}
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if (n < len)
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return (E2BIG);
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while (len-- > 0) {
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ch = (wc >> (len * 8)) & 0xFF;
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if (range->start > ch || range->end < ch)
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goto ilseq;
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psenc->ch[psenc->chlen++] = ch | bit;
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}
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memcpy(s, psenc->ch, psenc->chlen);
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*nresult = psenc->chlen;
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psenc->chlen = 0;
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return (0);
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ilseq:
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*nresult = (size_t)-1;
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return (EILSEQ);
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}
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static __inline int
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_citrus_HZ_put_state_reset(_HZEncodingInfo * __restrict ei,
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char * __restrict s, size_t n, _HZState * __restrict psenc,
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size_t * __restrict nresult)
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{
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escape_t *candidate;
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if (psenc->chlen != 0 || psenc->inuse == NULL)
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return (EINVAL);
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candidate = INIT0(ei);
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if (psenc->inuse != candidate) {
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if (n < 2)
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return (E2BIG);
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n -= 2;
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psenc->ch[psenc->chlen++] = ESCAPE_CHAR;
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psenc->ch[psenc->chlen++] = ESC(candidate);
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}
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if (n < 1)
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return (E2BIG);
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if (psenc->chlen > 0)
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memcpy(s, psenc->ch, psenc->chlen);
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*nresult = psenc->chlen;
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_citrus_HZ_init_state(ei, psenc);
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return (0);
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}
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static __inline int
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_citrus_HZ_stdenc_get_state_desc_generic(_HZEncodingInfo * __restrict ei,
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_HZState * __restrict psenc, int * __restrict rstate)
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{
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if (psenc->chlen < 0 || psenc->inuse == NULL)
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return (EINVAL);
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*rstate = (psenc->chlen == 0)
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? ((psenc->inuse == INIT0(ei))
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? _STDENC_SDGEN_INITIAL
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: _STDENC_SDGEN_STABLE)
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: ((psenc->ch[0] == ESCAPE_CHAR)
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? _STDENC_SDGEN_INCOMPLETE_SHIFT
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: _STDENC_SDGEN_INCOMPLETE_CHAR);
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_HZ_stdenc_wctocs(_HZEncodingInfo * __restrict ei __unused,
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_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
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{
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int bit;
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if (wc & 0x80) {
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bit = 0x80;
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wc &= ~0x80;
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} else
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bit = 0x0;
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if ((uint32_t)wc <= 0x7F) {
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*csid = (_csid_t)bit;
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*idx = (_index_t)wc;
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} else if ((uint32_t)wc <= 0x7F7F) {
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*csid = (_csid_t)(bit | 0x8000);
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*idx = (_index_t)wc;
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} else {
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*csid = (_index_t)(wc & ~0x00FFFF7F);
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*idx = (_csid_t)(wc & 0x00FFFF7F);
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}
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_HZ_stdenc_cstowc(_HZEncodingInfo * __restrict ei __unused,
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wchar_t * __restrict wc, _csid_t csid, _index_t idx)
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{
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*wc = (wchar_t)idx;
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switch (csid) {
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case 0x80:
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case 0x8080:
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*wc |= (wchar_t)0x80;
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/*FALLTHROUGH*/
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case 0x0:
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case 0x8000:
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break;
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default:
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*wc |= (wchar_t)csid;
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}
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return (0);
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}
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static void
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_citrus_HZ_encoding_module_uninit(_HZEncodingInfo *ei)
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{
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escape_t *escape;
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while ((escape = TAILQ_FIRST(E0SET(ei))) != NULL) {
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TAILQ_REMOVE(E0SET(ei), escape, entry);
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free(GL(escape));
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free(GR(escape));
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free(escape);
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}
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while ((escape = TAILQ_FIRST(E1SET(ei))) != NULL) {
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TAILQ_REMOVE(E1SET(ei), escape, entry);
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free(GL(escape));
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free(GR(escape));
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free(escape);
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}
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}
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static int
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_citrus_HZ_parse_char(void *context, const char *name __unused, const char *s)
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{
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|
escape_t *escape;
|
|
void **p;
|
|
|
|
p = (void **)context;
|
|
escape = (escape_t *)p[0];
|
|
if (escape->ch != '\0')
|
|
return (EINVAL);
|
|
escape->ch = *s++;
|
|
if (escape->ch == ESCAPE_CHAR || *s != '\0')
|
|
return (EINVAL);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
_citrus_HZ_parse_graphic(void *context, const char *name, const char *s)
|
|
{
|
|
_HZEncodingInfo *ei;
|
|
escape_t *escape;
|
|
graphic_t *graphic;
|
|
void **p;
|
|
|
|
p = (void **)context;
|
|
escape = (escape_t *)p[0];
|
|
ei = (_HZEncodingInfo *)p[1];
|
|
graphic = calloc(1, sizeof(*graphic));
|
|
if (graphic == NULL)
|
|
return (ENOMEM);
|
|
if (strcmp("GL", name) == 0) {
|
|
if (GL(escape) != NULL)
|
|
goto release;
|
|
GL(escape) = graphic;
|
|
} else if (strcmp("GR", name) == 0) {
|
|
if (GR(escape) != NULL)
|
|
goto release;
|
|
GR(escape) = graphic;
|
|
} else {
|
|
release:
|
|
free(graphic);
|
|
return (EINVAL);
|
|
}
|
|
graphic->escape = escape;
|
|
if (_bcs_strncasecmp("ASCII", s, 5) == 0) {
|
|
if (s[5] != '\0')
|
|
return (EINVAL);
|
|
graphic->charset = ASCII;
|
|
graphic->length = 1;
|
|
ei->ascii = graphic;
|
|
return (0);
|
|
} else if (_bcs_strncasecmp("GB2312", s, 6) == 0) {
|
|
if (s[6] != '\0')
|
|
return (EINVAL);
|
|
graphic->charset = GB2312;
|
|
graphic->length = 2;
|
|
ei->gb2312 = graphic;
|
|
return (0);
|
|
} else if (strncmp("94*", s, 3) == 0)
|
|
graphic->charset = CS94;
|
|
else if (strncmp("96*", s, 3) == 0)
|
|
graphic->charset = CS96;
|
|
else
|
|
return (EINVAL);
|
|
s += 3;
|
|
switch(*s) {
|
|
case '1': case '2': case '3':
|
|
graphic->length = (size_t)(*s - '0');
|
|
if (*++s == '\0')
|
|
break;
|
|
/*FALLTHROUGH*/
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static const _citrus_prop_hint_t escape_hints[] = {
|
|
_CITRUS_PROP_HINT_STR("CH", &_citrus_HZ_parse_char),
|
|
_CITRUS_PROP_HINT_STR("GL", &_citrus_HZ_parse_graphic),
|
|
_CITRUS_PROP_HINT_STR("GR", &_citrus_HZ_parse_graphic),
|
|
_CITRUS_PROP_HINT_END
|
|
};
|
|
|
|
static int
|
|
_citrus_HZ_parse_escape(void *context, const char *name, const char *s)
|
|
{
|
|
_HZEncodingInfo *ei;
|
|
escape_t *escape;
|
|
void *p[2];
|
|
|
|
ei = (_HZEncodingInfo *)context;
|
|
escape = calloc(1, sizeof(*escape));
|
|
if (escape == NULL)
|
|
return (EINVAL);
|
|
if (strcmp("0", name) == 0) {
|
|
escape->set = E0SET(ei);
|
|
TAILQ_INSERT_TAIL(E0SET(ei), escape, entry);
|
|
} else if (strcmp("1", name) == 0) {
|
|
escape->set = E1SET(ei);
|
|
TAILQ_INSERT_TAIL(E1SET(ei), escape, entry);
|
|
} else {
|
|
free(escape);
|
|
return (EINVAL);
|
|
}
|
|
p[0] = (void *)escape;
|
|
p[1] = (void *)ei;
|
|
return (_citrus_prop_parse_variable(
|
|
escape_hints, (void *)&p[0], s, strlen(s)));
|
|
}
|
|
|
|
static const _citrus_prop_hint_t root_hints[] = {
|
|
_CITRUS_PROP_HINT_STR("0", &_citrus_HZ_parse_escape),
|
|
_CITRUS_PROP_HINT_STR("1", &_citrus_HZ_parse_escape),
|
|
_CITRUS_PROP_HINT_END
|
|
};
|
|
|
|
static int
|
|
_citrus_HZ_encoding_module_init(_HZEncodingInfo * __restrict ei,
|
|
const void * __restrict var, size_t lenvar)
|
|
{
|
|
int errnum;
|
|
|
|
memset(ei, 0, sizeof(*ei));
|
|
TAILQ_INIT(E0SET(ei));
|
|
TAILQ_INIT(E1SET(ei));
|
|
errnum = _citrus_prop_parse_variable(
|
|
root_hints, (void *)ei, var, lenvar);
|
|
if (errnum != 0)
|
|
_citrus_HZ_encoding_module_uninit(ei);
|
|
return (errnum);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------
|
|
* public interface for stdenc
|
|
*/
|
|
|
|
_CITRUS_STDENC_DECLS(HZ);
|
|
_CITRUS_STDENC_DEF_OPS(HZ);
|
|
|
|
#include "citrus_stdenc_template.h"
|