encoding.c

Mrxvt是一个小巧

/*--------------------------------*-C-*--------------------------------------*
 * File:	  encoding.c
 *---------------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (C) 2001	   Tomohiro KUBOTA <[e-mail]>
 * Copyright (C) 2004	   Jingmin Zhou <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *--------------------------------------------------------------------------*/

#include "../config.h"
#include "rxvt.h"


#ifdef DEBUG_VERBOSE
#define DEBUG_LEVEL 1
#else 
#define DEBUG_LEVEL 0
#endif

#if DEBUG_LEVEL
#define DBG_MSG(d,x) if(d <= DEBUG_LEVEL) fprintf x
#else
#define DBG_MSG(d,x)
#endif


struct KNOWN_ENCODINGS {
	char*			name;
	enum enc_label	method;
	void (*func) (unsigned char*, int);
};

#ifdef MULTICHAR_SET
static struct KNOWN_ENCODINGS known_encodings[] = {
	{"SHIFTJIS",	ENC_SJIS,		rxvt_decode_sjis2jis},
	{"SJIS",		ENC_SJIS,		rxvt_decode_sjis2jis},
	{"EUC-JISX0213",ENC_SJIS,		rxvt_decode_sjis2jis},

	{"EUCJ",		ENC_EUCJ,		rxvt_decode_euc2jis},
	{"EUCJP",		ENC_EUCJ,		rxvt_decode_euc2jis},
	{"EUC-JP",		ENC_EUCJ,		rxvt_decode_euc2jis},
	{"UJIS",		ENC_EUCJ,		rxvt_decode_euc2jis},

	{"EUCKR",		ENC_EUCKR,		rxvt_decode_euc2jis},
	{"EUC-KR",		ENC_EUCKR,		rxvt_decode_euc2jis},
	{"KR",			ENC_EUCKR,		rxvt_decode_dummy},

	{"EUCCN",		ENC_GB,			rxvt_decode_euc2jis},
	{"EUC-CN",		ENC_GB,			rxvt_decode_euc2jis},
	{"GB2312",		ENC_GB,			rxvt_decode_euc2jis},
	{"GB",			ENC_GB,			rxvt_decode_euc2jis},

	{"GB18030",		ENC_GB18030,	rxvt_decode_gb180302jis},
	{"GBK",			ENC_GBK,		rxvt_decode_dummy},

	{"BIG5",		ENC_BIG5,		rxvt_decode_dummy},
	{"BIGFIVE",		ENC_BIG5,		rxvt_decode_dummy},
	{"BIG5HKSCS",	ENC_BIG5,		rxvt_decode_dummy},

	{"KOI8R",		ENC_KOI8R,		rxvt_decode_dummy},
	{"KOI8-R",		ENC_KOI8R,		rxvt_decode_dummy},
	{"KOI8U",		ENC_KOI8U,		rxvt_decode_dummy},
	{"KOI8-U",		ENC_KOI8U,		rxvt_decode_dummy},

	{"ISO8859-1",	ENC_ISO8859_1,	rxvt_decode_dummy},
	{"ISO8859-2",	ENC_ISO8859_2,	rxvt_decode_dummy},
	{"ISO8859-3",	ENC_ISO8859_3,	rxvt_decode_dummy},
	{"ISO8859-4",	ENC_ISO8859_4,	rxvt_decode_dummy},
	{"ISO8859-5",	ENC_ISO8859_5,	rxvt_decode_dummy},
	{"ISO8859-6",	ENC_ISO8859_6,	rxvt_decode_dummy},
	{"ISO8859-7",	ENC_ISO8859_7,	rxvt_decode_dummy},
	{"ISO8859-8",	ENC_ISO8859_8,	rxvt_decode_dummy},
	{"ISO8859-9",	ENC_ISO8859_9,	rxvt_decode_dummy},
	{"ISO8859-10",	ENC_ISO8859_10,	rxvt_decode_dummy},
	{"ISO8859-11",	ENC_ISO8859_11,	rxvt_decode_dummy},
	{"ISO8859-12",	ENC_ISO8859_12,	rxvt_decode_dummy},
	{"ISO8859-13",	ENC_ISO8859_13,	rxvt_decode_dummy},
	{"ISO8859-14",	ENC_ISO8859_14,	rxvt_decode_dummy},
	{"ISO8859-15",	ENC_ISO8859_15,	rxvt_decode_dummy},
	{"ISO88591",	ENC_ISO8859_1,	rxvt_decode_dummy},
	{"ISO88592",	ENC_ISO8859_2,	rxvt_decode_dummy},
	{"ISO88593",	ENC_ISO8859_3,	rxvt_decode_dummy},
	{"ISO88594",	ENC_ISO8859_4,	rxvt_decode_dummy},
	{"ISO88595",	ENC_ISO8859_5,	rxvt_decode_dummy},
	{"ISO88596",	ENC_ISO8859_6,	rxvt_decode_dummy},
	{"ISO88597",	ENC_ISO8859_7,	rxvt_decode_dummy},
	{"ISO88598",	ENC_ISO8859_8,	rxvt_decode_dummy},
	{"ISO88599",	ENC_ISO8859_9,	rxvt_decode_dummy},
	{"ISO885910",	ENC_ISO8859_10,	rxvt_decode_dummy},
	{"ISO885911",	ENC_ISO8859_11,	rxvt_decode_dummy},
	{"ISO885912",	ENC_ISO8859_12,	rxvt_decode_dummy},
	{"ISO885913",	ENC_ISO8859_13,	rxvt_decode_dummy},
	{"ISO885914",	ENC_ISO8859_14,	rxvt_decode_dummy},
	{"ISO885915",	ENC_ISO8859_15,	rxvt_decode_dummy},
	{"ISO_8859-1",	ENC_ISO8859_1,	rxvt_decode_dummy},
	{"ISO_8859-2",	ENC_ISO8859_2,	rxvt_decode_dummy},
	{"ISO_8859-3",	ENC_ISO8859_3,	rxvt_decode_dummy},
	{"ISO_8859-4",	ENC_ISO8859_4,	rxvt_decode_dummy},
	{"ISO_8859-5",	ENC_ISO8859_5,	rxvt_decode_dummy},
	{"ISO_8859-6",	ENC_ISO8859_6,	rxvt_decode_dummy},
	{"ISO_8859-7",	ENC_ISO8859_7,	rxvt_decode_dummy},
	{"ISO_8859-8",	ENC_ISO8859_8,	rxvt_decode_dummy},
	{"ISO_8859-9",	ENC_ISO8859_9,	rxvt_decode_dummy},
	{"ISO_8859-10",	ENC_ISO8859_10,	rxvt_decode_dummy},
	{"ISO_8859-11",	ENC_ISO8859_11,	rxvt_decode_dummy},
	{"ISO_8859-12",	ENC_ISO8859_12,	rxvt_decode_dummy},
	{"ISO_8859-13",	ENC_ISO8859_13,	rxvt_decode_dummy},
	{"ISO_8859-14",	ENC_ISO8859_14,	rxvt_decode_dummy},
	{"ISO_8859-15",	ENC_ISO8859_15,	rxvt_decode_dummy},

	{"NOENC",		ENC_NOENC,		rxvt_decode_dummy},
	{"",			ENC_NOENC,		rxvt_decode_dummy},
	{NULL,			-1,				NULL},
};
#endif


struct NFONT_LIST {
	enum enc_label	encoding;
	char*			font[MAX_NFONTS];
};

static struct NFONT_LIST nfont_list[] = {
	{ENC_NOENC,		 {NFONT_LIST_NULL}},
#ifdef MULTICHAR_SET
	{ENC_SJIS,		 {NFONT_LIST_EUCJ}},
	{ENC_EUCJ,		 {NFONT_LIST_EUCJ}},
	{ENC_GB,		 {NFONT_LIST_GB}},
	{ENC_GBK,		 {NFONT_LIST_GBK}},
	{ENC_GB18030,	 {NFONT_LIST_GB18030}},
	{ENC_BIG5,		 {NFONT_LIST_BIG5}},
	{ENC_EUCKR,		 {NFONT_LIST_EUCKR}},
#endif
	{ENC_KOI8R,		 {NFONT_LIST_KOI8R}},
	{ENC_KOI8U,		 {NFONT_LIST_KOI8U}},
	{ENC_ISO8859_1,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_2,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_3,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_4,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_5,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_6,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_7,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_8,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_9,  {NFONT_LIST_NULL}},
	{ENC_ISO8859_10, {NFONT_LIST_NULL}},
	{ENC_ISO8859_11, {NFONT_LIST_NULL}},
	{ENC_ISO8859_12, {NFONT_LIST_NULL}},
	{ENC_ISO8859_13, {NFONT_LIST_NULL}},
	{ENC_ISO8859_14, {NFONT_LIST_NULL}},
	{ENC_ISO8859_15, {NFONT_LIST_NULL}},
};
static char* isofont[] = {NFONT_LIST_ISO8859X};

#ifdef MULTICHAR_SET
/* Multicharacter font names, roman fonts sized to match */
struct MFONT_LIST {
	enum enc_label	encoding;
	char*			mfont[MAX_NFONTS];
};

static struct MFONT_LIST mfont_list[] = {
	{ENC_NOENC,		 {MFONT_LIST_NULL}},
	{ENC_SJIS,		 {MFONT_LIST_EUCJ}},
	{ENC_EUCJ,		 {MFONT_LIST_EUCJ}},
	{ENC_GB,		 {MFONT_LIST_GB}},
	{ENC_GBK,		 {MFONT_LIST_GBK}},
	{ENC_GB18030,	 {MFONT_LIST_GB18030}},
	{ENC_BIG5,		 {MFONT_LIST_BIG5}},
	{ENC_EUCKR,		 {MFONT_LIST_EUCKR}},

	{ENC_KOI8R,		 {MFONT_LIST_NULL}},
	{ENC_KOI8U,		 {MFONT_LIST_NULL}},
	{ENC_ISO8859_1,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_2,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_3,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_4,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_5,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_6,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_7,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_8,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_9,  {MFONT_LIST_NULL}},
	{ENC_ISO8859_10, {MFONT_LIST_NULL}},
	{ENC_ISO8859_11, {MFONT_LIST_NULL}},
	{ENC_ISO8859_12, {MFONT_LIST_NULL}},
	{ENC_ISO8859_13, {MFONT_LIST_NULL}},
	{ENC_ISO8859_14, {MFONT_LIST_NULL}},
	{ENC_ISO8859_15, {MFONT_LIST_NULL}},
};
#endif	/* MULTICHAR_SET */


struct FALLBACK_FONT_LIST {
	enum enc_label	encoding;
	char*			fontname;
};

struct ENCODING_NAME {
	enum enc_label	encoding;
	char*			encname;
};

static struct ENCODING_NAME encoding_name[] = {
	{ENC_NOENC,		 "NOENC"},
# ifdef MULTICHAR_SET
	{ENC_SJIS,		 "SJIS"},
	{ENC_EUCJ,		 "EUCJP"},
	{ENC_GB,		 "GB2312"},
	{ENC_GBK,		 "GBK"},
	{ENC_GB18030,	 "GB18030"},
	{ENC_BIG5,		 "BIG5"},
	{ENC_EUCKR,		 "EUCKR"},
# endif
	{ENC_KOI8R,		 "KOI8R"},
	{ENC_KOI8U,		 "KOI8U"},
	{ENC_ISO8859_1,  "ISO8859-1"},
	{ENC_ISO8859_2,  "ISO8859-2"},
	{ENC_ISO8859_3,  "ISO8859-3"},
	{ENC_ISO8859_4,  "ISO8859-4"},
	{ENC_ISO8859_5,  "ISO8859-5"},
	{ENC_ISO8859_6,  "ISO8859-6"},
	{ENC_ISO8859_7,  "ISO8859-7"},
	{ENC_ISO8859_8,  "ISO8859-8"},
	{ENC_ISO8859_9,  "ISO8859-9"},
	{ENC_ISO8859_10, "ISO8859-10"},
	{ENC_ISO8859_11, "ISO8859-11"},
	{ENC_ISO8859_12, "ISO8859-12"},
	{ENC_ISO8859_13, "ISO8859-13"},
	{ENC_ISO8859_14, "ISO8859-14"},
	{ENC_ISO8859_15, "ISO8859-15"},
};


#ifdef XFT_SUPPORT
static struct FALLBACK_FONT_LIST fallback_mfont_list_xft[] = {
	{ENC_NOENC,		 DEFAULT_XFT_FONT_NAME},
# ifdef MULTICHAR_SET
	{ENC_SJIS,		 "Kochi Gothic"},
	{ENC_EUCJ,		 "Kochi Gothic"},
	{ENC_GB,		 "SimSun"},
	{ENC_GBK,		 "SimSun"},
	{ENC_GB18030,	 "SimSun"},
	{ENC_BIG5,		 "MingLiU"},
	{ENC_EUCKR,		 "Luxi Mono"},
# endif
	{ENC_KOI8R,		 "Courier New"},
	{ENC_KOI8U,		 "Courier New"},
	{ENC_ISO8859_1,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_2,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_3,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_4,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_5,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_6,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_7,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_8,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_9,  DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_10, DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_11, DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_12, DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_13, DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_14, DEFAULT_XFT_FONT_NAME},
	{ENC_ISO8859_15, DEFAULT_XFT_FONT_NAME},
};
#endif /* XFT_SUPPORT */

static struct FALLBACK_FONT_LIST fallback_mfont_list_x11[] = {
	{ENC_NOENC,		 "-*-*-*-r-*-*-*-*-*-c-*-iso8859-1"},
# ifdef MULTICHAR_SET
	{ENC_SJIS,		 "-*-*-*-r-*-*-*-*-*-c-*-jisx0208*-0"},
	{ENC_EUCJ,		 "-*-*-*-r-*-*-*-*-*-c-*-jisx0208*-0"},
	{ENC_GB,		 "-*-*-*-*-*-*-*-*-*-*-*-*-gb2312*-0"},
	{ENC_GBK,		 "-*-*-*-*-*-*-*-*-*-*-*-*-gbk-0"},
	{ENC_GB18030,	 "-*-*-*-*-*-*-*-*-*-*-*-*-gb18030*-0"},
	{ENC_BIG5,		 "-*-*-*-*-*-*-*-*-*-*-c-*-big5-0"},
	{ENC_EUCKR,		 "-*-*-*-*-*-*-*-*-*-*-c-*-ksc5601*-0"},
# endif
	{ENC_KOI8R,		 "-*-*-*-r-*-*-*-*-*-c-*-koi8-r"},
	{ENC_KOI8U,		 "-*-*-*-r-*-*-*-*-*-c-*-koi8-u"},