#ifndef LYCHARSETS_H
#define LYCHARSETS_H

#ifndef HTUTILS_H
#include <HTUtils.h>
#endif

#include <UCDefs.h>

#ifndef UCMAP_H
#include <UCMap.h>
#endif /* !UCMAP_H */

extern BOOL HTPassEightBitRaw;
extern BOOL HTPassEightBitNum;
extern BOOL HTPassHighCtrlRaw;
extern BOOL HTPassHighCtrlNum;
extern BOOLEAN LYHaveCJKCharacterSet;
extern BOOLEAN DisplayCharsetMatchLocale;

#include <HTCJK.h>
extern HTkcode kanji_code;

/*
 *  currently active character set (internal handler)
 */
extern int current_char_set;

/*
 *  Initializer, calls initialization function for the
 *  CHARTRANS handling. - KW
 */
extern int LYCharSetsDeclared(void);

extern const char **LYCharSets[];
extern const char *SevenBitApproximations[];
extern const char **p_entity_values;
extern const char *LYchar_set_names[];	/* Full name, not MIME */
extern int LYlowest_eightbit[];
extern int LYNumCharsets;
extern LYUCcharset LYCharSet_UC[];
extern int UCGetLYhndl_byAnyName(char *value);
extern void HTMLSetCharacterHandling(int i);
extern void HTMLSetUseDefaultRawMode(int i, BOOLEAN modeflag);
extern void HTMLUseCharacterSet(int i);
extern UCode_t HTMLGetEntityUCValue(const char *name);
extern void Set_HTCJK(const char *inMIMEname, const char *outMIMEname);

extern const char *HTMLGetEntityName(UCode_t code);

/*
 * HTMLGetEntityName calls LYEntityNames for iso-8859-1 entity names only. 
 * This is an obsolete technique but widely used in the code.  Note that
 * unicode number in general may have several equivalent entity names because
 * of synonyms.
 */
extern BOOL force_old_UCLYhndl_on_reload;
extern int forced_UCLYhdnl;

#ifndef  EXP_CHARSET_CHOICE
# define ALL_CHARSETS_IN_O_MENU_SCREEN 1
#endif

#ifdef EXP_CHARSET_CHOICE
typedef struct {
    BOOL hide_display;		/* if FALSE, show in "display-charset" menu */
    BOOL hide_assumed;		/* if FALSE, show in "assumed-charset" menu */
#ifndef ALL_CHARSETS_IN_O_MENU_SCREEN
    int assumed_idx;		/* only this field is needed */
#endif
} charset_subset_t;

/* each element corresponds to charset in LYCharSets */
extern charset_subset_t charset_subsets[];

/* all zeros by default - i.e., all charsets allowed */

/*
 * true if the charset choices for display charset were requested by user via
 * lynx.cfg.  It will remain FALSE if no "display_charset_choice" settings were
 * encountered in lynx.cfg
 */
extern BOOL custom_display_charset;

/* similar to custom_display_charset */
extern BOOL custom_assumed_doc_charset;

#ifndef ALL_CHARSETS_IN_O_MENU_SCREEN

/* this stuff is initialized after reading lynx.cfg and .lynxrc */

/*
 * These arrays map index of charset shown in menu to the index in LYCharsets[]
 */
extern int display_charset_map[];
extern int assumed_doc_charset_map[];

/* these arrays are NULL terminated */
extern const char *display_charset_choices[];
extern const char *assumed_charset_choices[];

extern int displayed_display_charset_idx;

#endif
/* this will be called after lynx.cfg and .lynxrc are read */
extern void init_charset_subsets(void);
#endif /* EXP_CHARSET_CHOICE */

#if !defined(NO_AUTODETECT_DISPLAY_CHARSET)
#  ifdef __EMX__
#    define CAN_AUTODETECT_DISPLAY_CHARSET
#    ifdef EXP_CHARTRANS_AUTOSWITCH
#      define CAN_SWITCH_DISPLAY_CHARSET
#    endif
#  endif
#endif

#ifdef CAN_AUTODETECT_DISPLAY_CHARSET
extern int auto_display_charset;
#endif

#ifdef CAN_SWITCH_DISPLAY_CHARSET
enum switch_display_charset_t {
    SWITCH_DISPLAY_CHARSET_MAYBE,
    SWITCH_DISPLAY_CHARSET_REALLY,
    SWITCH_DISPLAY_CHARSET_RESIZE
};
extern int Switch_Display_Charset(int ord, enum switch_display_charset_t really);
extern int Find_Best_Display_Charset(int ord);
extern char *charsets_directory;
extern char *charset_switch_rules;
extern int switch_display_charsets;
extern int auto_other_display_charset;
extern int codepages[2];
extern int real_charsets[2];	/* Non "auto-" charsets for the codepages */
#endif

#endif /* LYCHARSETS_H */