/* TryeType header / table */
typedef	struct {
	unsigned long	version;
	unsigned short	numTables;
	unsigned short	searchRange;
	unsigned short	entrySelector;
	unsigned short	rangeShift;
} TTF_HEADER;

typedef	struct {
	unsigned long	tag;
	unsigned long	checkSum;
	unsigned long	offset;
	unsigned long	length;
} TTF_TBLDIR;


/* cmap index */
typedef	struct {
	unsigned short	PlatformId;
	unsigned short	PlatformSpecificId;
	unsigned long	offset;
} CMAP_Platform;

typedef	struct {
	unsigned short	version;
	unsigned short	numTables;
	CMAP_Platform	platform[1];
} CMAP_INDEX;


/* common region of cmap format 0, 2, 4 */
typedef	struct {
	unsigned short	format;
	unsigned short	length;
	unsigned short	version;
} CMAP_Common;


/* cmap format 0 */
typedef	struct {
	CMAP_Common	c;
	char		*glyphIdArray;
} CMAP_Format0;


/* cmap format 2 */
typedef	struct {
	unsigned short	firstCode;
	unsigned short	entryCount;
	short		idDelta;
	unsigned short	idRangeOffset;
} CMAP2_subHeader;

typedef	struct {
	CMAP_Common	c;
	unsigned short	*subHeaderKeys;
	CMAP2_subHeader	*subHeaders;
	unsigned short	*glyphIndexArray;
} CMAP_Format2;


/* cmap format 4 */
typedef	struct {
	unsigned short	segCountX2;
	unsigned short	searchRange;
	unsigned short	entrySelector;
	unsigned short	rangeShift;
} CMAP4_fix;

typedef	struct {
	CMAP_Common	c;
	CMAP4_fix	f;
	unsigned short	*endCount;
	unsigned short	reservedPad;
	unsigned short	*startCount;
	unsigned short	*idDelta;
	unsigned short	*idRangeOffset;
	unsigned short	*glyphIdArray;
} CMAP_Format4;

/* (unified) */
typedef	union {
	CMAP_Common	com;
	CMAP_Format0	fmt0;
	CMAP_Format2	fmt2;
	CMAP_Format4	fmt4;
} CMAP_Format;


/* name record */
typedef	struct {
	unsigned short	PlatformId;
	unsigned short	PlatformSpecificId;
	unsigned short	LanguageId;
	unsigned short	NameId;
	unsigned short	length;
	unsigned short	offset;
} NAME_RECORD;

typedef	struct {
	unsigned short	format;
	unsigned short	numTables;
	unsigned short	offset;
	NAME_RECORD	NameRecord[1];
} NAME_INDEX;


/* magic numbers */
#define	CMAP	0x636d6170
#define	NAME	0x6e616d65


/* misc. */
#define	Platform_APPLEUnicode	0
#define	Platform_Macintosh	1
#define	Platform_ISO		2
#define	Platform_Microsoft	3

#define	cmap_MS_encodeID_Symbol		0
#define	cmap_MS_encodeID_Unicode	1
#define	cmap_MS_encodeID_ShiftJIS	2
#define	cmap_MS_encodeID_Big5		3
#define	cmap_MS_encodeID_PRC		4
#define	cmap_MS_encodeID_Wansung	5
#define	cmap_MS_encodeID_Johab		6