/*
 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
 * Copyright (C) 1999-2002 Hiroyuki Yamamoto
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef __CODECONV_H__
#define __CODECONV_H__

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <glib.h>

#if HAVE_LIBJCONV
#  include <jconv.h>
#endif

typedef struct _CodeConverter	CodeConverter;

typedef enum
{
	C_AUTO,
	C_US_ASCII,
	C_UTF_8,
	C_ISO_8859_1,
	C_ISO_8859_2,
	C_ISO_8859_4,
	C_ISO_8859_5,
	C_ISO_8859_7,
	C_ISO_8859_8,
	C_ISO_8859_9,
	C_ISO_8859_11,
	C_ISO_8859_13,
	C_ISO_8859_15,
	C_BALTIC,
	C_CP1251,
	C_WINDOWS_1251,
	C_KOI8_R,
	C_KOI8_U,
	C_ISO_2022_JP,
	C_ISO_2022_JP_2,
	C_EUC_JP,
	C_SHIFT_JIS,
	C_ISO_2022_KR,
	C_EUC_KR,
	C_ISO_2022_CN,
	C_EUC_CN,
	C_GB2312,
	C_EUC_TW,
	C_BIG5,
	C_TIS_620,
	C_WINDOWS_874
} CharSet;

typedef void (*CodeConvFunc) (gchar *outbuf, gint outlen, const gchar *inbuf);

struct _CodeConverter
{
#if !HAVE_LIBJCONV
	CodeConvFunc code_conv_func;
#endif
	gchar *charset_str;
	CharSet charset;
};

#define CS_AUTO			"AUTO"
#define CS_US_ASCII		"US-ASCII"
#define CS_ANSI_X3_4_1968	"ANSI_X3.4-1968"
#define CS_UTF_8		"UTF-8"
#define CS_ISO_8859_1		"ISO-8859-1"
#define CS_ISO_8859_2		"ISO-8859-2"
#define CS_ISO_8859_4		"ISO-8859-4"
#define CS_ISO_8859_5		"ISO-8859-5"
#define CS_ISO_8859_7		"ISO-8859-7"
#define CS_ISO_8859_8		"ISO-8859-8"
#define CS_ISO_8859_9		"ISO-8859-9"
#define CS_ISO_8859_11		"ISO-8859-11"
#define CS_ISO_8859_13		"ISO-8859-13"
#define CS_ISO_8859_15		"ISO-8859-15"
#define CS_BALTIC		"BALTIC"
#define CS_CP1251		"CP1251"
#define CS_WINDOWS_1251		"Windows-1251"
#define CS_KOI8_R		"KOI8-R"
#define CS_KOI8_U		"KOI8-U"
#define CS_ISO_2022_JP		"ISO-2022-JP"
#define CS_ISO_2022_JP_2	"ISO-2022-JP-2"
#define CS_EUC_JP		"EUC-JP"
#define CS_EUCJP		"EUCJP"
#define CS_SHIFT_JIS		"Shift_JIS"
#define CS_ISO_2022_KR		"ISO-2022-KR"
#define CS_EUC_KR		"EUC-KR"
#define CS_ISO_2022_CN		"ISO-2022-CN"
#define CS_EUC_CN		"EUC-CN"
#define CS_GB2312		"GB2312"
#define CS_EUC_TW		"EUC-TW"
#define CS_BIG5			"Big5"
#define CS_TIS_620		"TIS-620"
#define CS_WINDOWS_874		"Windows-874"

void conv_jistoeuc(gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_euctojis(gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_sjistoeuc(gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_anytoeuc(gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_anytojis(gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_unreadable_eucjp(gchar *str);
void conv_unreadable_8bit(gchar *str);
void conv_unreadable_latin(gchar *str);
void conv_mb_alnum(gchar *str);

CharSet conv_guess_encoding(const gchar *str);

void conv_jistodisp  (gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_sjistodisp (gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_euctodisp  (gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_ustodisp   (gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_latintodisp(gchar *outbuf, gint outlen, const gchar *inbuf);
void conv_noconv     (gchar *outbuf, gint outlen, const gchar *inbuf);

CodeConverter *conv_code_converter_new	(const gchar	*charset);
void conv_code_converter_destroy	(CodeConverter	*conv);
gint conv_convert			(CodeConverter	*conv,
					 gchar		*outbuf,
					 gint		 outlen,
					 const gchar	*inbuf);

gchar *conv_codeset_strdup(const gchar *inbuf,
			   const gchar *src_codeset,
			   const gchar *dest_codeset);

CodeConvFunc conv_get_code_conv_func(const gchar *charset);

const gchar *conv_get_charset_str		(CharSet	 charset);
CharSet conv_get_charset_from_str		(const gchar	*charset);
CharSet conv_get_current_charset		(void);
const gchar *conv_get_current_charset_str	(void);
CharSet conv_get_outgoing_charset		(void);
const gchar *conv_get_outgoing_charset_str	(void);

const gchar *conv_get_current_locale		(void);

void conv_unmime_header_overwrite	(gchar		*str);
void conv_unmime_header			(gchar		*outbuf,
					 gint		 outlen,
					 const gchar	*str,
					 const gchar	*charset);
void conv_encode_header			(gchar		*dest,
					 gint		 len,
					 const gchar	*src,
					 gint		 header_len);


#endif /* __CODECONV_H__ */