encoding.c

multi-tabed terminal based on rxvt

/*--------------------------------*-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]>
 * Copyright (C) 2007		Jehan Hysseo <[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"


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},
    {"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"},
    {ENC_ISO8859_1,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-1"},
    {ENC_ISO8859_2,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-2"},
    {ENC_ISO8859_3,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-3"},
    {ENC_ISO8859_4,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-4"},
    {ENC_ISO8859_5,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-5"},
    {ENC_ISO8859_6,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-6"},
    {ENC_ISO8859_7,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-7"},
    {ENC_ISO8859_8,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-8"},
    {ENC_ISO8859_9,  "-*-*-*-r-*-*-*-*-*-c-*-iso8859-9"},
    {ENC_ISO8859_10, "-*-*-*-r-*-*-*-*-*-c-*-iso8859-10"},
    {ENC_ISO8859_11, "-*-*-*-r-*-*-*-*-*-c-*-iso8859-11"},
    {ENC_ISO8859_12, "-*-*-*-r-*-*-*-*-*-c-*-iso8859-12"},
    {ENC_ISO8859_13, "-*-*-*-r-*-*-*-*-*-c-*-iso8859-13"},
    {ENC_ISO8859_14, "-*-*-*-r-*-*-*-*-*-c-*-iso8859-14"},
    {ENC_ISO8859_15, "-*-*-*-r-*-*-*-*-*-c-*-iso8859-15"},
};


char**	    def_fontName;