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1293 lines
28 KiB
C
1293 lines
28 KiB
C
/* $NetBSD: citrus_iso2022.c,v 1.20 2010/12/07 22:01:45 joerg 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)1999, 2002 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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* $Citrus: xpg4dl/FreeBSD/lib/libc/locale/iso2022.c,v 1.23 2001/06/21 01:51:44 yamt Exp $
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*/
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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 <stdbool.h>
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#include <stddef.h>
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#include <stdio.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_module.h"
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#include "citrus_stdenc.h"
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#include "citrus_iso2022.h"
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/* ----------------------------------------------------------------------
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* private stuffs used by templates
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*/
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/*
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* wchar_t mappings:
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* ASCII (ESC ( B) 00000000 00000000 00000000 0xxxxxxx
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* iso-8859-1 (ESC , A) 00000000 00000000 00000000 1xxxxxxx
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* 94 charset (ESC ( F) 0fffffff 00000000 00000000 0xxxxxxx
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* 94 charset (ESC ( M F) 0fffffff 1mmmmmmm 00000000 0xxxxxxx
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* 96 charset (ESC , F) 0fffffff 00000000 00000000 1xxxxxxx
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* 96 charset (ESC , M F) 0fffffff 1mmmmmmm 00000000 1xxxxxxx
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* 94x94 charset (ESC $ ( F) 0fffffff 00000000 0xxxxxxx 0xxxxxxx
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* 96x96 charset (ESC $ , F) 0fffffff 00000000 0xxxxxxx 1xxxxxxx
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* 94x94 charset (ESC & V ESC $ ( F)
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* 0fffffff 1vvvvvvv 0xxxxxxx 0xxxxxxx
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* 94x94x94 charset (ESC $ ( F) 0fffffff 0xxxxxxx 0xxxxxxx 0xxxxxxx
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* 96x96x96 charset (ESC $ , F) 0fffffff 0xxxxxxx 0xxxxxxx 1xxxxxxx
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* reserved for UCS4 co-existence (UCS4 is 31bit encoding thanks to mohta bit)
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* 1xxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
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*/
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#define CS94 (0U)
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#define CS96 (1U)
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#define CS94MULTI (2U)
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#define CS96MULTI (3U)
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typedef struct {
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unsigned char type;
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unsigned char final;
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unsigned char interm;
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unsigned char vers;
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} _ISO2022Charset;
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static const _ISO2022Charset ascii = { CS94, 'B', '\0', '\0' };
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static const _ISO2022Charset iso88591 = { CS96, 'A', '\0', '\0' };
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typedef struct {
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_ISO2022Charset g[4];
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/* need 3 bits to hold -1, 0, ..., 3 */
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int gl:3,
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gr:3,
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singlegl:3,
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singlegr:3;
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char ch[7]; /* longest escape sequence (ESC & V ESC $ ( F) */
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size_t chlen;
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int flags;
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#define _ISO2022STATE_FLAG_INITIALIZED 1
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} _ISO2022State;
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typedef struct {
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_ISO2022Charset *recommend[4];
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size_t recommendsize[4];
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_ISO2022Charset initg[4];
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int maxcharset;
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int flags;
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#define F_8BIT 0x0001
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#define F_NOOLD 0x0002
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#define F_SI 0x0010 /*0F*/
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#define F_SO 0x0020 /*0E*/
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#define F_LS0 0x0010 /*0F*/
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#define F_LS1 0x0020 /*0E*/
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#define F_LS2 0x0040 /*ESC n*/
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#define F_LS3 0x0080 /*ESC o*/
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#define F_LS1R 0x0100 /*ESC ~*/
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#define F_LS2R 0x0200 /*ESC }*/
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#define F_LS3R 0x0400 /*ESC |*/
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#define F_SS2 0x0800 /*ESC N*/
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#define F_SS3 0x1000 /*ESC O*/
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#define F_SS2R 0x2000 /*8E*/
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#define F_SS3R 0x4000 /*8F*/
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} _ISO2022EncodingInfo;
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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_ISO2022_##m
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#define _ENCODING_INFO _ISO2022EncodingInfo
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#define _ENCODING_STATE _ISO2022State
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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_) \
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(!((_ps_)->flags & _ISO2022STATE_FLAG_INITIALIZED))
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#define _ISO2022INVALID (wchar_t)-1
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static __inline bool isc0(__uint8_t x)
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{
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return ((x & 0x1f) == x);
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}
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static __inline bool isc1(__uint8_t x)
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{
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return (0x80 <= x && x <= 0x9f);
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}
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static __inline bool iscntl(__uint8_t x)
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{
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return (isc0(x) || isc1(x) || x == 0x7f);
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}
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static __inline bool is94(__uint8_t x)
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{
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return (0x21 <= x && x <= 0x7e);
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}
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static __inline bool is96(__uint8_t x)
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{
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return (0x20 <= x && x <= 0x7f);
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}
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static __inline bool isecma(__uint8_t x)
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{
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return (0x30 <= x && x <= 0x7f);
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}
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static __inline bool isinterm(__uint8_t x)
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{
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return (0x20 <= x && x <= 0x2f);
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}
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static __inline bool isthree(__uint8_t x)
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{
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return (0x60 <= x && x <= 0x6f);
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}
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static __inline int
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getcs(const char * __restrict p, _ISO2022Charset * __restrict cs)
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{
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if (!strncmp(p, "94$", 3) && p[3] && !p[4]) {
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cs->final = (unsigned char)(p[3] & 0xff);
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cs->interm = '\0';
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cs->vers = '\0';
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cs->type = CS94MULTI;
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} else if (!strncmp(p, "96$", 3) && p[3] && !p[4]) {
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cs->final = (unsigned char)(p[3] & 0xff);
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cs->interm = '\0';
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cs->vers = '\0';
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cs->type = CS96MULTI;
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} else if (!strncmp(p, "94", 2) && p[2] && !p[3]) {
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cs->final = (unsigned char)(p[2] & 0xff);
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cs->interm = '\0';
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cs->vers = '\0';
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cs->type = CS94;
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} else if (!strncmp(p, "96", 2) && p[2] && !p[3]) {
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cs->final = (unsigned char )(p[2] & 0xff);
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cs->interm = '\0';
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cs->vers = '\0';
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cs->type = CS96;
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} else
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return (1);
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return (0);
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}
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#define _NOTMATCH 0
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#define _MATCH 1
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#define _PARSEFAIL 2
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static __inline int
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get_recommend(_ISO2022EncodingInfo * __restrict ei,
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const char * __restrict token)
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{
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_ISO2022Charset cs, *p;
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int i;
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if (!strchr("0123", token[0]) || token[1] != '=')
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return (_NOTMATCH);
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if (getcs(&token[2], &cs) == 0)
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;
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else if (!strcmp(&token[2], "94")) {
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cs.final = (unsigned char)(token[4]);
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cs.interm = '\0';
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cs.vers = '\0';
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cs.type = CS94;
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} else if (!strcmp(&token[2], "96")) {
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cs.final = (unsigned char)(token[4]);
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cs.interm = '\0';
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cs.vers = '\0';
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cs.type = CS96;
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} else if (!strcmp(&token[2], "94$")) {
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cs.final = (unsigned char)(token[5]);
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cs.interm = '\0';
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cs.vers = '\0';
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cs.type = CS94MULTI;
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} else if (!strcmp(&token[2], "96$")) {
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cs.final = (unsigned char)(token[5]);
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cs.interm = '\0';
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cs.vers = '\0';
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cs.type = CS96MULTI;
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} else
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return (_PARSEFAIL);
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i = token[0] - '0';
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if (!ei->recommend[i])
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ei->recommend[i] = malloc(sizeof(_ISO2022Charset));
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else {
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p = reallocarray(ei->recommend[i], ei->recommendsize[i] + 1,
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sizeof(_ISO2022Charset));
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if (!p)
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return (_PARSEFAIL);
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ei->recommend[i] = p;
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}
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if (!ei->recommend[i])
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return (_PARSEFAIL);
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ei->recommendsize[i]++;
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(ei->recommend[i] + (ei->recommendsize[i] - 1))->final = cs.final;
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(ei->recommend[i] + (ei->recommendsize[i] - 1))->interm = cs.interm;
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(ei->recommend[i] + (ei->recommendsize[i] - 1))->vers = cs.vers;
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(ei->recommend[i] + (ei->recommendsize[i] - 1))->type = cs.type;
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return (_MATCH);
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}
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static __inline int
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get_initg(_ISO2022EncodingInfo * __restrict ei,
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const char * __restrict token)
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{
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_ISO2022Charset cs;
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if (strncmp("INIT", &token[0], 4) ||
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!strchr("0123", token[4]) ||
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token[5] != '=')
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return (_NOTMATCH);
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if (getcs(&token[6], &cs) != 0)
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return (_PARSEFAIL);
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ei->initg[token[4] - '0'].type = cs.type;
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ei->initg[token[4] - '0'].final = cs.final;
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ei->initg[token[4] - '0'].interm = cs.interm;
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ei->initg[token[4] - '0'].vers = cs.vers;
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return (_MATCH);
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}
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static __inline int
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get_max(_ISO2022EncodingInfo * __restrict ei,
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const char * __restrict token)
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{
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if (!strcmp(token, "MAX1"))
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ei->maxcharset = 1;
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else if (!strcmp(token, "MAX2"))
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ei->maxcharset = 2;
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else if (!strcmp(token, "MAX3"))
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ei->maxcharset = 3;
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else
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return (_NOTMATCH);
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return (_MATCH);
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}
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static __inline int
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get_flags(_ISO2022EncodingInfo * __restrict ei,
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const char * __restrict token)
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{
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static struct {
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const char *tag;
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int flag;
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} const tags[] = {
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{ "DUMMY", 0 },
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{ "8BIT", F_8BIT },
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{ "NOOLD", F_NOOLD },
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{ "SI", F_SI },
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{ "SO", F_SO },
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{ "LS0", F_LS0 },
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{ "LS1", F_LS1 },
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{ "LS2", F_LS2 },
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{ "LS3", F_LS3 },
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{ "LS1R", F_LS1R },
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{ "LS2R", F_LS2R },
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{ "LS3R", F_LS3R },
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{ "SS2", F_SS2 },
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{ "SS3", F_SS3 },
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{ "SS2R", F_SS2R },
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{ "SS3R", F_SS3R },
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{ NULL, 0 }
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};
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int i;
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for (i = 0; tags[i].tag; i++)
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if (!strcmp(token, tags[i].tag)) {
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ei->flags |= tags[i].flag;
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return (_MATCH);
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}
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return (_NOTMATCH);
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}
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static __inline int
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_citrus_ISO2022_parse_variable(_ISO2022EncodingInfo * __restrict ei,
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const void * __restrict var, size_t lenvar __unused)
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{
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char const *e, *v;
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char buf[20];
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size_t len;
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int i, ret;
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/*
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* parse VARIABLE section.
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*/
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if (!var)
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return (EFTYPE);
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v = (const char *) var;
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/* initialize structure */
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ei->maxcharset = 0;
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for (i = 0; i < 4; i++) {
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ei->recommend[i] = NULL;
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ei->recommendsize[i] = 0;
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}
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ei->flags = 0;
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while (*v) {
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while (*v == ' ' || *v == '\t')
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++v;
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/* find the token */
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e = v;
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while (*e && *e != ' ' && *e != '\t')
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++e;
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len = e - v;
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if (len == 0)
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break;
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if (len >= sizeof(buf))
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goto parsefail;
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snprintf(buf, sizeof(buf), "%.*s", (int)len, v);
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if ((ret = get_recommend(ei, buf)) != _NOTMATCH)
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;
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else if ((ret = get_initg(ei, buf)) != _NOTMATCH)
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;
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else if ((ret = get_max(ei, buf)) != _NOTMATCH)
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;
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else if ((ret = get_flags(ei, buf)) != _NOTMATCH)
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;
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else
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ret = _PARSEFAIL;
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if (ret == _PARSEFAIL)
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goto parsefail;
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v = e;
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}
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return (0);
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parsefail:
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free(ei->recommend[0]);
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free(ei->recommend[1]);
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free(ei->recommend[2]);
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free(ei->recommend[3]);
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|
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return (EFTYPE);
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}
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|
|
static __inline void
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/*ARGSUSED*/
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_citrus_ISO2022_init_state(_ISO2022EncodingInfo * __restrict ei,
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_ISO2022State * __restrict s)
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{
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int i;
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memset(s, 0, sizeof(*s));
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s->gl = 0;
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s->gr = (ei->flags & F_8BIT) ? 1 : -1;
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|
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for (i = 0; i < 4; i++)
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if (ei->initg[i].final) {
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s->g[i].type = ei->initg[i].type;
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s->g[i].final = ei->initg[i].final;
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s->g[i].interm = ei->initg[i].interm;
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}
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s->singlegl = s->singlegr = -1;
|
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s->flags |= _ISO2022STATE_FLAG_INITIALIZED;
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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_ISO2022_pack_state(_ISO2022EncodingInfo * __restrict ei __unused,
|
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void * __restrict pspriv, const _ISO2022State * __restrict s)
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|
{
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|
|
|
memcpy(pspriv, (const void *)s, sizeof(*s));
|
|
}
|
|
|
|
static __inline void
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|
/*ARGSUSED*/
|
|
_citrus_ISO2022_unpack_state(_ISO2022EncodingInfo * __restrict ei __unused,
|
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_ISO2022State * __restrict s, const void * __restrict pspriv)
|
|
{
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|
|
|
memcpy((void *)s, pspriv, sizeof(*s));
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
/*ARGSUSED*/
|
|
_citrus_ISO2022_encoding_module_init(_ISO2022EncodingInfo * __restrict ei,
|
|
const void * __restrict var, size_t lenvar)
|
|
{
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|
|
|
return (_citrus_ISO2022_parse_variable(ei, var, lenvar));
|
|
}
|
|
|
|
static void
|
|
/*ARGSUSED*/
|
|
_citrus_ISO2022_encoding_module_uninit(_ISO2022EncodingInfo *ei __unused)
|
|
{
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|
|
|
}
|
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|
|
#define ESC '\033'
|
|
#define ECMA -1
|
|
#define INTERM -2
|
|
#define OECMA -3
|
|
static const struct seqtable {
|
|
int type;
|
|
int csoff;
|
|
int finaloff;
|
|
int intermoff;
|
|
int versoff;
|
|
int len;
|
|
int chars[10];
|
|
} seqtable[] = {
|
|
/* G0 94MULTI special */
|
|
{ CS94MULTI, -1, 2, -1, -1, 3, { ESC, '$', OECMA }, },
|
|
/* G0 94MULTI special with version identification */
|
|
{ CS94MULTI, -1, 5, -1, 2, 6, { ESC, '&', ECMA, ESC, '$', OECMA }, },
|
|
/* G? 94 */
|
|
{ CS94, 1, 2, -1, -1, 3, { ESC, CS94, ECMA, }, },
|
|
/* G? 94 with 2nd intermediate char */
|
|
{ CS94, 1, 3, 2, -1, 4, { ESC, CS94, INTERM, ECMA, }, },
|
|
/* G? 96 */
|
|
{ CS96, 1, 2, -1, -1, 3, { ESC, CS96, ECMA, }, },
|
|
/* G? 96 with 2nd intermediate char */
|
|
{ CS96, 1, 3, 2, -1, 4, { ESC, CS96, INTERM, ECMA, }, },
|
|
/* G? 94MULTI */
|
|
{ CS94MULTI, 2, 3, -1, -1, 4, { ESC, '$', CS94, ECMA, }, },
|
|
/* G? 96MULTI */
|
|
{ CS96MULTI, 2, 3, -1, -1, 4, { ESC, '$', CS96, ECMA, }, },
|
|
/* G? 94MULTI with version specification */
|
|
{ CS94MULTI, 5, 6, -1, 2, 7, { ESC, '&', ECMA, ESC, '$', CS94, ECMA, }, },
|
|
/* LS2/3 */
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, 'n', }, },
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, 'o', }, },
|
|
/* LS1/2/3R */
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, '~', }, },
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, /*{*/ '}', }, },
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, '|', }, },
|
|
/* SS2/3 */
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, 'N', }, },
|
|
{ -1, -1, -1, -1, -1, 2, { ESC, 'O', }, },
|
|
/* end of records */
|
|
// { 0, }
|
|
{ 0, 0, 0, 0, 0, 0, { ESC, 0, }, }
|
|
};
|
|
|
|
static int
|
|
seqmatch(const char * __restrict s, size_t n,
|
|
const struct seqtable * __restrict sp)
|
|
{
|
|
const int *p;
|
|
|
|
p = sp->chars;
|
|
while ((size_t)(p - sp->chars) < n && p - sp->chars < sp->len) {
|
|
switch (*p) {
|
|
case ECMA:
|
|
if (!isecma(*s))
|
|
goto terminate;
|
|
break;
|
|
case OECMA:
|
|
if (*s && strchr("@AB", *s))
|
|
break;
|
|
else
|
|
goto terminate;
|
|
case INTERM:
|
|
if (!isinterm(*s))
|
|
goto terminate;
|
|
break;
|
|
case CS94:
|
|
if (*s && strchr("()*+", *s))
|
|
break;
|
|
else
|
|
goto terminate;
|
|
case CS96:
|
|
if (*s && strchr(",-./", *s))
|
|
break;
|
|
else
|
|
goto terminate;
|
|
default:
|
|
if (*s != *p)
|
|
goto terminate;
|
|
break;
|
|
}
|
|
|
|
p++;
|
|
s++;
|
|
}
|
|
|
|
terminate:
|
|
return (p - sp->chars);
|
|
}
|
|
|
|
static wchar_t
|
|
_ISO2022_sgetwchar(_ISO2022EncodingInfo * __restrict ei __unused,
|
|
char * __restrict string, size_t n, char ** __restrict result,
|
|
_ISO2022State * __restrict psenc)
|
|
{
|
|
const struct seqtable *sp;
|
|
wchar_t wchar = 0;
|
|
int i, cur, nmatch;
|
|
|
|
while (1) {
|
|
/* SI/SO */
|
|
if (1 <= n && string[0] == '\017') {
|
|
psenc->gl = 0;
|
|
string++;
|
|
n--;
|
|
continue;
|
|
}
|
|
if (1 <= n && string[0] == '\016') {
|
|
psenc->gl = 1;
|
|
string++;
|
|
n--;
|
|
continue;
|
|
}
|
|
|
|
/* SS2/3R */
|
|
if (1 <= n && string[0] && strchr("\217\216", string[0])) {
|
|
psenc->singlegl = psenc->singlegr =
|
|
(string[0] - '\216') + 2;
|
|
string++;
|
|
n--;
|
|
continue;
|
|
}
|
|
|
|
/* eat the letter if this is not ESC */
|
|
if (1 <= n && string[0] != '\033')
|
|
break;
|
|
|
|
/* look for a perfect match from escape sequences */
|
|
for (sp = &seqtable[0]; sp->len; sp++) {
|
|
nmatch = seqmatch(string, n, sp);
|
|
if (sp->len == nmatch && n >= (size_t)(sp->len))
|
|
break;
|
|
}
|
|
|
|
if (!sp->len)
|
|
goto notseq;
|
|
|
|
if (sp->type != -1) {
|
|
if (sp->csoff == -1)
|
|
i = 0;
|
|
else {
|
|
switch (sp->type) {
|
|
case CS94:
|
|
case CS94MULTI:
|
|
i = string[sp->csoff] - '(';
|
|
break;
|
|
case CS96:
|
|
case CS96MULTI:
|
|
i = string[sp->csoff] - ',';
|
|
break;
|
|
default:
|
|
return (_ISO2022INVALID);
|
|
}
|
|
}
|
|
psenc->g[i].type = sp->type;
|
|
psenc->g[i].final = '\0';
|
|
psenc->g[i].interm = '\0';
|
|
psenc->g[i].vers = '\0';
|
|
/* sp->finaloff must not be -1 */
|
|
if (sp->finaloff != -1)
|
|
psenc->g[i].final = string[sp->finaloff];
|
|
if (sp->intermoff != -1)
|
|
psenc->g[i].interm = string[sp->intermoff];
|
|
if (sp->versoff != -1)
|
|
psenc->g[i].vers = string[sp->versoff];
|
|
|
|
string += sp->len;
|
|
n -= sp->len;
|
|
continue;
|
|
}
|
|
|
|
/* LS2/3 */
|
|
if (2 <= n && string[0] == '\033' &&
|
|
string[1] && strchr("no", string[1])) {
|
|
psenc->gl = string[1] - 'n' + 2;
|
|
string += 2;
|
|
n -= 2;
|
|
continue;
|
|
}
|
|
|
|
/* LS1/2/3R */
|
|
/* XXX: { for vi showmatch */
|
|
if (2 <= n && string[0] == '\033' &&
|
|
string[1] && strchr("~}|", string[1])) {
|
|
psenc->gr = 3 - (string[1] - '|');
|
|
string += 2;
|
|
n -= 2;
|
|
continue;
|
|
}
|
|
|
|
/* SS2/3 */
|
|
if (2 <= n && string[0] == '\033' && string[1] &&
|
|
strchr("NO", string[1])) {
|
|
psenc->singlegl = (string[1] - 'N') + 2;
|
|
string += 2;
|
|
n -= 2;
|
|
continue;
|
|
}
|
|
|
|
notseq:
|
|
/*
|
|
* if we've got an unknown escape sequence, eat the ESC at the
|
|
* head. otherwise, wait till full escape sequence comes.
|
|
*/
|
|
for (sp = &seqtable[0]; sp->len; sp++) {
|
|
nmatch = seqmatch(string, n, sp);
|
|
if (!nmatch)
|
|
continue;
|
|
|
|
/*
|
|
* if we are in the middle of escape sequence,
|
|
* we still need to wait for more characters to come
|
|
*/
|
|
if (n < (size_t)(sp->len)) {
|
|
if ((size_t)(nmatch) == n) {
|
|
if (result)
|
|
*result = string;
|
|
return (_ISO2022INVALID);
|
|
}
|
|
} else {
|
|
if (nmatch == sp->len) {
|
|
/* this case should not happen */
|
|
goto eat;
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
eat:
|
|
/* no letter to eat */
|
|
if (n < 1) {
|
|
if (result)
|
|
*result = string;
|
|
return (_ISO2022INVALID);
|
|
}
|
|
|
|
/* normal chars. always eat C0/C1 as is. */
|
|
if (iscntl(*string & 0xff))
|
|
cur = -1;
|
|
else if (*string & 0x80)
|
|
cur = (psenc->singlegr == -1) ? psenc->gr : psenc->singlegr;
|
|
else
|
|
cur = (psenc->singlegl == -1) ? psenc->gl : psenc->singlegl;
|
|
|
|
if (cur == -1) {
|
|
asis:
|
|
wchar = *string++ & 0xff;
|
|
if (result)
|
|
*result = string;
|
|
/* reset single shift state */
|
|
psenc->singlegr = psenc->singlegl = -1;
|
|
return (wchar);
|
|
}
|
|
|
|
/* length error check */
|
|
switch (psenc->g[cur].type) {
|
|
case CS94MULTI:
|
|
case CS96MULTI:
|
|
if (!isthree(psenc->g[cur].final)) {
|
|
if (2 <= n &&
|
|
(string[0] & 0x80) == (string[1] & 0x80))
|
|
break;
|
|
} else {
|
|
if (3 <= n &&
|
|
(string[0] & 0x80) == (string[1] & 0x80) &&
|
|
(string[0] & 0x80) == (string[2] & 0x80))
|
|
break;
|
|
}
|
|
|
|
/* we still need to wait for more characters to come */
|
|
if (result)
|
|
*result = string;
|
|
return (_ISO2022INVALID);
|
|
|
|
case CS94:
|
|
case CS96:
|
|
if (1 <= n)
|
|
break;
|
|
|
|
/* we still need to wait for more characters to come */
|
|
if (result)
|
|
*result = string;
|
|
return (_ISO2022INVALID);
|
|
}
|
|
|
|
/* range check */
|
|
switch (psenc->g[cur].type) {
|
|
case CS94:
|
|
if (!(is94(string[0] & 0x7f)))
|
|
goto asis;
|
|
break;
|
|
case CS96:
|
|
if (!(is96(string[0] & 0x7f)))
|
|
goto asis;
|
|
break;
|
|
case CS94MULTI:
|
|
if (!(is94(string[0] & 0x7f) && is94(string[1] & 0x7f)))
|
|
goto asis;
|
|
break;
|
|
case CS96MULTI:
|
|
if (!(is96(string[0] & 0x7f) && is96(string[1] & 0x7f)))
|
|
goto asis;
|
|
break;
|
|
}
|
|
|
|
/* extract the character. */
|
|
switch (psenc->g[cur].type) {
|
|
case CS94:
|
|
/* special case for ASCII. */
|
|
if (psenc->g[cur].final == 'B' && !psenc->g[cur].interm) {
|
|
wchar = *string++;
|
|
wchar &= 0x7f;
|
|
break;
|
|
}
|
|
wchar = psenc->g[cur].final;
|
|
wchar = (wchar << 8);
|
|
wchar |= (psenc->g[cur].interm ? (0x80 | psenc->g[cur].interm) : 0);
|
|
wchar = (wchar << 8);
|
|
wchar = (wchar << 8) | (*string++ & 0x7f);
|
|
break;
|
|
case CS96:
|
|
/* special case for ISO-8859-1. */
|
|
if (psenc->g[cur].final == 'A' && !psenc->g[cur].interm) {
|
|
wchar = *string++;
|
|
wchar &= 0x7f;
|
|
wchar |= 0x80;
|
|
break;
|
|
}
|
|
wchar = psenc->g[cur].final;
|
|
wchar = (wchar << 8);
|
|
wchar |= (psenc->g[cur].interm ? (0x80 | psenc->g[cur].interm) : 0);
|
|
wchar = (wchar << 8);
|
|
wchar = (wchar << 8) | (*string++ & 0x7f);
|
|
wchar |= 0x80;
|
|
break;
|
|
case CS94MULTI:
|
|
case CS96MULTI:
|
|
wchar = psenc->g[cur].final;
|
|
wchar = (wchar << 8);
|
|
if (isthree(psenc->g[cur].final))
|
|
wchar |= (*string++ & 0x7f);
|
|
wchar = (wchar << 8) | (*string++ & 0x7f);
|
|
wchar = (wchar << 8) | (*string++ & 0x7f);
|
|
if (psenc->g[cur].type == CS96MULTI)
|
|
wchar |= 0x80;
|
|
break;
|
|
}
|
|
|
|
if (result)
|
|
*result = string;
|
|
/* reset single shift state */
|
|
psenc->singlegr = psenc->singlegl = -1;
|
|
return (wchar);
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
_citrus_ISO2022_mbrtowc_priv(_ISO2022EncodingInfo * __restrict ei,
|
|
wchar_t * __restrict pwc, char ** __restrict s,
|
|
size_t n, _ISO2022State * __restrict psenc, size_t * __restrict nresult)
|
|
{
|
|
char *p, *result, *s0;
|
|
wchar_t wchar;
|
|
int c, chlenbak;
|
|
|
|
if (*s == NULL) {
|
|
_citrus_ISO2022_init_state(ei, psenc);
|
|
*nresult = _ENCODING_IS_STATE_DEPENDENT;
|
|
return (0);
|
|
}
|
|
s0 = *s;
|
|
c = 0;
|
|
chlenbak = psenc->chlen;
|
|
|
|
/*
|
|
* if we have something in buffer, use that.
|
|
* otherwise, skip here
|
|
*/
|
|
if (psenc->chlen > sizeof(psenc->ch)) {
|
|
/* illgeal state */
|
|
_citrus_ISO2022_init_state(ei, psenc);
|
|
goto encoding_error;
|
|
}
|
|
if (psenc->chlen == 0)
|
|
goto emptybuf;
|
|
|
|
/* buffer is not empty */
|
|
p = psenc->ch;
|
|
while (psenc->chlen < sizeof(psenc->ch)) {
|
|
if (n > 0) {
|
|
psenc->ch[psenc->chlen++] = *s0++;
|
|
n--;
|
|
}
|
|
|
|
wchar = _ISO2022_sgetwchar(ei, p, psenc->chlen - (p-psenc->ch),
|
|
&result, psenc);
|
|
c += result - p;
|
|
if (wchar != _ISO2022INVALID) {
|
|
if (psenc->chlen > (size_t)c)
|
|
memmove(psenc->ch, result, psenc->chlen - c);
|
|
if (psenc->chlen < (size_t)c)
|
|
psenc->chlen = 0;
|
|
else
|
|
psenc->chlen -= c;
|
|
goto output;
|
|
}
|
|
|
|
if (n == 0) {
|
|
if ((size_t)(result - p) == psenc->chlen)
|
|
/* complete shift sequence. */
|
|
psenc->chlen = 0;
|
|
goto restart;
|
|
}
|
|
|
|
p = result;
|
|
}
|
|
|
|
/* escape sequence too long? */
|
|
goto encoding_error;
|
|
|
|
emptybuf:
|
|
wchar = _ISO2022_sgetwchar(ei, s0, n, &result, psenc);
|
|
if (wchar != _ISO2022INVALID) {
|
|
c += result - s0;
|
|
psenc->chlen = 0;
|
|
s0 = result;
|
|
goto output;
|
|
}
|
|
if (result > s0) {
|
|
c += (result - s0);
|
|
n -= (result - s0);
|
|
s0 = result;
|
|
if (n > 0)
|
|
goto emptybuf;
|
|
/* complete shift sequence. */
|
|
goto restart;
|
|
}
|
|
n += c;
|
|
if (n < sizeof(psenc->ch)) {
|
|
memcpy(psenc->ch, s0 - c, n);
|
|
psenc->chlen = n;
|
|
s0 = result;
|
|
goto restart;
|
|
}
|
|
|
|
/* escape sequence too long? */
|
|
|
|
encoding_error:
|
|
psenc->chlen = 0;
|
|
*nresult = (size_t)-1;
|
|
return (EILSEQ);
|
|
|
|
output:
|
|
*s = s0;
|
|
if (pwc)
|
|
*pwc = wchar;
|
|
*nresult = wchar ? c - chlenbak : 0;
|
|
return (0);
|
|
|
|
restart:
|
|
*s = s0;
|
|
*nresult = (size_t)-2;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
recommendation(_ISO2022EncodingInfo * __restrict ei,
|
|
_ISO2022Charset * __restrict cs)
|
|
{
|
|
_ISO2022Charset *recommend;
|
|
size_t j;
|
|
int i;
|
|
|
|
/* first, try a exact match. */
|
|
for (i = 0; i < 4; i++) {
|
|
recommend = ei->recommend[i];
|
|
for (j = 0; j < ei->recommendsize[i]; j++) {
|
|
if (cs->type != recommend[j].type)
|
|
continue;
|
|
if (cs->final != recommend[j].final)
|
|
continue;
|
|
if (cs->interm != recommend[j].interm)
|
|
continue;
|
|
|
|
return (i);
|
|
}
|
|
}
|
|
|
|
/* then, try a wildcard match over final char. */
|
|
for (i = 0; i < 4; i++) {
|
|
recommend = ei->recommend[i];
|
|
for (j = 0; j < ei->recommendsize[i]; j++) {
|
|
if (cs->type != recommend[j].type)
|
|
continue;
|
|
if (cs->final && (cs->final != recommend[j].final))
|
|
continue;
|
|
if (cs->interm && (cs->interm != recommend[j].interm))
|
|
continue;
|
|
|
|
return (i);
|
|
}
|
|
}
|
|
|
|
/* there's no recommendation. make a guess. */
|
|
if (ei->maxcharset == 0) {
|
|
return (0);
|
|
} else {
|
|
switch (cs->type) {
|
|
case CS94:
|
|
case CS94MULTI:
|
|
return (0);
|
|
case CS96:
|
|
case CS96MULTI:
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
_ISO2022_sputwchar(_ISO2022EncodingInfo * __restrict ei, wchar_t wc,
|
|
char * __restrict string, size_t n, char ** __restrict result,
|
|
_ISO2022State * __restrict psenc, size_t * __restrict nresult)
|
|
{
|
|
_ISO2022Charset cs;
|
|
char *p;
|
|
char tmp[MB_LEN_MAX];
|
|
size_t len;
|
|
int bit8, i = 0, target;
|
|
unsigned char mask;
|
|
|
|
if (isc0(wc & 0xff)) {
|
|
/* go back to INIT0 or ASCII on control chars */
|
|
cs = ei->initg[0].final ? ei->initg[0] : ascii;
|
|
} else if (isc1(wc & 0xff)) {
|
|
/* go back to INIT1 or ISO-8859-1 on control chars */
|
|
cs = ei->initg[1].final ? ei->initg[1] : iso88591;
|
|
} else if (!(wc & ~0xff)) {
|
|
if (wc & 0x80) {
|
|
/* special treatment for ISO-8859-1 */
|
|
cs = iso88591;
|
|
} else {
|
|
/* special treatment for ASCII */
|
|
cs = ascii;
|
|
}
|
|
} else {
|
|
cs.final = (wc >> 24) & 0x7f;
|
|
if ((wc >> 16) & 0x80)
|
|
cs.interm = (wc >> 16) & 0x7f;
|
|
else
|
|
cs.interm = '\0';
|
|
if (wc & 0x80)
|
|
cs.type = (wc & 0x00007f00) ? CS96MULTI : CS96;
|
|
else
|
|
cs.type = (wc & 0x00007f00) ? CS94MULTI : CS94;
|
|
}
|
|
target = recommendation(ei, &cs);
|
|
p = tmp;
|
|
bit8 = ei->flags & F_8BIT;
|
|
|
|
/* designate the charset onto the target plane(G0/1/2/3). */
|
|
if (psenc->g[target].type == cs.type &&
|
|
psenc->g[target].final == cs.final &&
|
|
psenc->g[target].interm == cs.interm)
|
|
goto planeok;
|
|
|
|
*p++ = '\033';
|
|
if (cs.type == CS94MULTI || cs.type == CS96MULTI)
|
|
*p++ = '$';
|
|
if (target == 0 && cs.type == CS94MULTI && strchr("@AB", cs.final) &&
|
|
!cs.interm && !(ei->flags & F_NOOLD))
|
|
;
|
|
else if (cs.type == CS94 || cs.type == CS94MULTI)
|
|
*p++ = "()*+"[target];
|
|
else
|
|
*p++ = ",-./"[target];
|
|
if (cs.interm)
|
|
*p++ = cs.interm;
|
|
*p++ = cs.final;
|
|
|
|
psenc->g[target].type = cs.type;
|
|
psenc->g[target].final = cs.final;
|
|
psenc->g[target].interm = cs.interm;
|
|
|
|
planeok:
|
|
/* invoke the plane onto GL or GR. */
|
|
if (psenc->gl == target)
|
|
goto sideok;
|
|
if (bit8 && psenc->gr == target)
|
|
goto sideok;
|
|
|
|
if (target == 0 && (ei->flags & F_LS0)) {
|
|
*p++ = '\017';
|
|
psenc->gl = 0;
|
|
} else if (target == 1 && (ei->flags & F_LS1)) {
|
|
*p++ = '\016';
|
|
psenc->gl = 1;
|
|
} else if (target == 2 && (ei->flags & F_LS2)) {
|
|
*p++ = '\033';
|
|
*p++ = 'n';
|
|
psenc->gl = 2;
|
|
} else if (target == 3 && (ei->flags & F_LS3)) {
|
|
*p++ = '\033';
|
|
*p++ = 'o';
|
|
psenc->gl = 3;
|
|
} else if (bit8 && target == 1 && (ei->flags & F_LS1R)) {
|
|
*p++ = '\033';
|
|
*p++ = '~';
|
|
psenc->gr = 1;
|
|
} else if (bit8 && target == 2 && (ei->flags & F_LS2R)) {
|
|
*p++ = '\033';
|
|
/*{*/
|
|
*p++ = '}';
|
|
psenc->gr = 2;
|
|
} else if (bit8 && target == 3 && (ei->flags & F_LS3R)) {
|
|
*p++ = '\033';
|
|
*p++ = '|';
|
|
psenc->gr = 3;
|
|
} else if (target == 2 && (ei->flags & F_SS2)) {
|
|
*p++ = '\033';
|
|
*p++ = 'N';
|
|
psenc->singlegl = 2;
|
|
} else if (target == 3 && (ei->flags & F_SS3)) {
|
|
*p++ = '\033';
|
|
*p++ = 'O';
|
|
psenc->singlegl = 3;
|
|
} else if (bit8 && target == 2 && (ei->flags & F_SS2R)) {
|
|
*p++ = '\216';
|
|
*p++ = 'N';
|
|
psenc->singlegl = psenc->singlegr = 2;
|
|
} else if (bit8 && target == 3 && (ei->flags & F_SS3R)) {
|
|
*p++ = '\217';
|
|
*p++ = 'O';
|
|
psenc->singlegl = psenc->singlegr = 3;
|
|
} else
|
|
goto ilseq;
|
|
|
|
sideok:
|
|
if (psenc->singlegl == target)
|
|
mask = 0x00;
|
|
else if (psenc->singlegr == target)
|
|
mask = 0x80;
|
|
else if (psenc->gl == target)
|
|
mask = 0x00;
|
|
else if ((ei->flags & F_8BIT) && psenc->gr == target)
|
|
mask = 0x80;
|
|
else
|
|
goto ilseq;
|
|
|
|
switch (cs.type) {
|
|
case CS94:
|
|
case CS96:
|
|
i = 1;
|
|
break;
|
|
case CS94MULTI:
|
|
case CS96MULTI:
|
|
i = !iscntl(wc & 0xff) ?
|
|
(isthree(cs.final) ? 3 : 2) : 1;
|
|
break;
|
|
}
|
|
while (i-- > 0)
|
|
*p++ = ((wc >> (i << 3)) & 0x7f) | mask;
|
|
|
|
/* reset single shift state */
|
|
psenc->singlegl = psenc->singlegr = -1;
|
|
|
|
len = (size_t)(p - tmp);
|
|
if (n < len) {
|
|
if (result)
|
|
*result = (char *)0;
|
|
*nresult = (size_t)-1;
|
|
return (E2BIG);
|
|
}
|
|
if (result)
|
|
*result = string + len;
|
|
memcpy(string, tmp, len);
|
|
*nresult = len;
|
|
|
|
return (0);
|
|
|
|
ilseq:
|
|
*nresult = (size_t)-1;
|
|
return (EILSEQ);
|
|
}
|
|
|
|
static int
|
|
_citrus_ISO2022_put_state_reset(_ISO2022EncodingInfo * __restrict ei,
|
|
char * __restrict s, size_t n, _ISO2022State * __restrict psenc,
|
|
size_t * __restrict nresult)
|
|
{
|
|
char *result;
|
|
char buf[MB_LEN_MAX];
|
|
size_t len;
|
|
int ret;
|
|
|
|
/* XXX state will be modified after this operation... */
|
|
ret = _ISO2022_sputwchar(ei, L'\0', buf, sizeof(buf), &result, psenc,
|
|
&len);
|
|
if (ret) {
|
|
*nresult = len;
|
|
return (ret);
|
|
}
|
|
|
|
if (sizeof(buf) < len || n < len-1) {
|
|
/* XXX should recover state? */
|
|
*nresult = (size_t)-1;
|
|
return (E2BIG);
|
|
}
|
|
|
|
memcpy(s, buf, len - 1);
|
|
*nresult = len - 1;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
_citrus_ISO2022_wcrtomb_priv(_ISO2022EncodingInfo * __restrict ei,
|
|
char * __restrict s, size_t n, wchar_t wc,
|
|
_ISO2022State * __restrict psenc, size_t * __restrict nresult)
|
|
{
|
|
char *result;
|
|
char buf[MB_LEN_MAX];
|
|
size_t len;
|
|
int ret;
|
|
|
|
/* XXX state will be modified after this operation... */
|
|
ret = _ISO2022_sputwchar(ei, wc, buf, sizeof(buf), &result, psenc,
|
|
&len);
|
|
if (ret) {
|
|
*nresult = len;
|
|
return (ret);
|
|
}
|
|
|
|
if (sizeof(buf) < len || n < len) {
|
|
/* XXX should recover state? */
|
|
*nresult = (size_t)-1;
|
|
return (E2BIG);
|
|
}
|
|
|
|
memcpy(s, buf, len);
|
|
*nresult = len;
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_ISO2022_stdenc_wctocs(_ISO2022EncodingInfo * __restrict ei __unused,
|
|
_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
|
|
{
|
|
wchar_t m, nm;
|
|
|
|
m = wc & 0x7FFF8080;
|
|
nm = wc & 0x007F7F7F;
|
|
if (m & 0x00800000)
|
|
nm &= 0x00007F7F;
|
|
else
|
|
m &= 0x7F008080;
|
|
if (nm & 0x007F0000) {
|
|
/* ^3 mark */
|
|
m |= 0x007F0000;
|
|
} else if (nm & 0x00007F00) {
|
|
/* ^2 mark */
|
|
m |= 0x00007F00;
|
|
}
|
|
*csid = (_csid_t)m;
|
|
*idx = (_index_t)nm;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_ISO2022_stdenc_cstowc(_ISO2022EncodingInfo * __restrict ei __unused,
|
|
wchar_t * __restrict wc, _csid_t csid, _index_t idx)
|
|
{
|
|
|
|
*wc = (wchar_t)(csid & 0x7F808080) | (wchar_t)idx;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_ISO2022_stdenc_get_state_desc_generic(_ISO2022EncodingInfo * __restrict ei __unused,
|
|
_ISO2022State * __restrict psenc, int * __restrict rstate)
|
|
{
|
|
|
|
if (psenc->chlen == 0) {
|
|
/* XXX: it should distinguish initial and stable. */
|
|
*rstate = _STDENC_SDGEN_STABLE;
|
|
} else
|
|
*rstate = (psenc->ch[0] == '\033') ?
|
|
_STDENC_SDGEN_INCOMPLETE_SHIFT :
|
|
_STDENC_SDGEN_INCOMPLETE_CHAR;
|
|
return (0);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------
|
|
* public interface for stdenc
|
|
*/
|
|
|
|
_CITRUS_STDENC_DECLS(ISO2022);
|
|
_CITRUS_STDENC_DEF_OPS(ISO2022);
|
|
|
|
#include "citrus_stdenc_template.h"
|