/*----------------------------------------------------------------------------*
 *                                                                 .---.      *
 *                           PornView                             (_,/\ \     *
 *           photo/movie collection viewer and manager           (`a a(  )    *
 *                    trem0r <trem0r@tlen.pl>                    ) \=  ) (    *
 *                           (c) 2002                           (.--' '--.)   *
 *                                                              / (_)^(_) \   *
 *----------------------------------------------------------------------------*/

/*
 * These codes are taken from GImageView.
 * GImageView author: Takuro Ashie
 */

#ifndef __CHARSET_H__
#define __CHARSET_H__

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

#include <glib.h>

#ifdef USE_GTK2
#else
typedef guint32 gunichar;

gboolean        g_utf8_validate (const gchar * str,
				 gssize max_len, const gchar ** end);
#endif

#define CHARSET_ASCII  "US-ASCII"
#define CHARSET_UTF8   "UTF-8"

/* japanese character set */
#define CHARSET_SJIS   "SHIFT_JIS"
#define CHARSET_EUC_JP "EUC-JP"
#define CHARSET_JIS    "ISO-2022-JP"

/* for detecting locale charset */
typedef const gchar *(*CharsetDetectLocaleFn) (const gchar * locale);
/* for auto detecting charset */
typedef const gchar *(*CharsetAutoDetectFn) (const gchar * string);
/* for alternative character set conversion method */
typedef gchar  *(*CharsetConvFn) (const gchar * string,
				  const gchar * src_codeset,
				  const gchar * dest_codeset);
typedef enum
{
    CHARSET_TO_INTERNAL_NEVER,	/* do not convert */
    CHARSET_TO_INTERNAL_LOCALE,	/* convert to locale charset */
    CHARSET_TO_INTERNAL_AUTO,	/* use auto detect function */
    CHARSET_TO_INTERNAL_ANY	/* convert from specified charset */
}
CharsetToInternalTypes;

typedef enum
{
    CHARSET_TO_LOCALE_NEVER,
    CHARSET_TO_LOCALE_INTERNAL,
    CHARSET_TO_LOCALE_AUTO,
    CHARSET_TO_LOCALE_ANY
}
CharsetToLocaleTypes;

typedef enum
{
    CHARSET_AUTODETECT_NONE,
    CHARSET_AUTODETECT_JAPANESE
}
CharsetAutoDetectType;

extern const gchar *charset_auto_detect_labels[];


GList          *charset_get_known_list (const gchar * lang);
const gchar    *get_lang (void);

/* wrapper for nl_langinfo() */
void            charset_set_locale_charset (const gchar * charset);
void            charset_set_internal_charset (const gchar * charset);
const gchar    *charset_get_locale ();
const gchar    *charset_get_internal ();
CharsetAutoDetectFn charset_get_auto_detect_func (CharsetAutoDetectType type);

/*
 *  any code -> internal converter
 */

/* wrapper for all converter */
/* src_codeset can be NULL if type is not CHARSET_TO_INTERNAL_ANY */
/* func can be NULL if type is not CHARSET_TO_INTERNAL_AUTO */
gchar          *charset_to_internal (const gchar * src,
				     const gchar * src_codeset,
				     CharsetAutoDetectFn func,
				     CharsetToInternalTypes type);

gchar          *charset_locale_to_internal (const gchar * src);
gchar          *charset_to_internal_auto (const gchar * src,
					  CharsetAutoDetectFn func);

/*
 *  any code -> locale converter
 */

/* wrapper for all converter */
/* src_codeset can be NULL if type is not CHARSET_TO_INTERNAL_ANY */
/* func can be NULL if type is not CHARSET_TO_INTERNAL_AUTO */
gchar          *charset_to_locale (const gchar * src,
				   const gchar * src_codeset,
				   CharsetAutoDetectFn func,
				   CharsetToLocaleTypes type);

gchar          *charset_internal_to_locale (const gchar * src);
gchar          *charset_to_locale_auto (const gchar * src,
					CharsetAutoDetectFn func);

/*
 *  internal -> any code converter
 */
gchar          *charset_from_internal (const gchar * src,
				       const gchar * dest_codeset);

/*
 *  locale -> any code converter
 */
gchar          *charset_from_locale (const gchar * src,
				     const gchar * dest_codeset);

/*
 *  any -> any code converter
 */
gchar          *charset_conv (const gchar * src,
			      const gchar * src_codeset,
			      const gchar * dest_codeset);
gchar          *charset_conv_auto (const gchar * src,
				   const gchar * dest_codeset,
				   CharsetAutoDetectFn func);

#endif /* __CHARSET_H__ */