#ifndef ENCODING_H
#define ENCODING_H

#include <inttypes.h>

typedef uint32_t unicode_t;

// order must match the table in encoding.C(!)
enum codeset {
  CS_UNKNOWN = 0,
  CS_US_ASCII,

  CS_ISO8859_1,
  CS_ISO8859_2,
  CS_ISO8859_3,
  CS_ISO8859_4,
  CS_ISO8859_5,
  CS_ISO8859_6,
  CS_ISO8859_7,
  CS_ISO8859_8,
  CS_ISO8859_9,
  CS_ISO8859_10,
  CS_ISO8859_11,
  CS_ISO8859_13,
  CS_ISO8859_14,
  CS_ISO8859_15,
  CS_ISO8859_16,

  CS_KOI8_R,
  CS_KOI8_U,
  CS_JIS0201_1976_0,
  CS_JIS0208_1990_0,
  CS_JIS0212_1990_0,
  CS_JIS0213_1,
  CS_JIS0213_2,

  CS_KSC5601_1987_0,

  CS_GB2312_1980_0,
  CS_GBK_0,

  CS_CNS11643_1992_1,
  CS_CNS11643_1992_2,
  CS_CNS11643_1992_3,
  CS_CNS11643_1992_4,
  CS_CNS11643_1992_5,
  CS_CNS11643_1992_6,
  CS_CNS11643_1992_7,
  CS_CNS11643_1992_F,

  CS_BIG5,
  CS_BIG5_EXT,
  CS_BIG5_PLUS,

  CS_VISCII,

  CS_UNICODE_16, /* 16-bit subset of unicode, for X11 */
  CS_UNICODE,

  NUM_CODESETS
};

codeset codeset_from_name (const char *name);

enum {
  ZERO_WIDTH_CHAR  = 0x200b,
  REPLACEMENT_CHAR = 0xfffd,
  NOCHAR           = 0xffff, // must be invalid in ANY codeset (!)
};

struct rxvt_codeset_conv
{
  uint32_t (*from_unicode) (unicode_t unicode);
#if ENCODING_TO_UNICODE
  unicode_t (*to_unicode) (uint32_t enc);
#endif
};

extern const rxvt_codeset_conv rxvt_codeset[NUM_CODESETS];

extern unicode_t rxvt_compose (unicode_t c1, unicode_t c2);

#define FROM_UNICODE(cs,code) rxvt_codeset[cs].from_unicode (code)
#define TO_UNICODE(cs,code)   rxvt_codeset[cs].to_unicode   (code)

struct unicode // namespace für arme
{
  static bool is_space (unicode_t c);
};

#endif