/***************************************************************************
 * E-Com Technology Ltd.
 *
 * ECOMPACS DICOM Network Transport Libraries * Version 0.1 Beta
 ***************************************************************************/

#ifndef	__DICOM_UID__
#define	__DICOM_UID__


class DString;


//////////////////////////////////////////////////////////////////////
// class UID
class DICOM_API UID
{
private:
	char	uid[65];
	UINT	Length;

public:
	UID ()		 { uid[0] = 0; Length = 0; }
	UID (const BYTE *s) { Set (s); }
	UID (const char *s) { Set ((BYTE*)s); }
	UID (const DString & str) { Set (str); }

	void	Get (UID & u) { u = (*this); }
	void	Set (const UID & u) { (*this) = u; }
	void	Set (const char *s) { this->Set ((BYTE *) s); }
	void	Set (const DString & s) { (*this) = s; }
	void	Set (const BYTE *s)
	{
		Reset ();

		if (! s) return;
		Length = strlen ((char*) s);
		Length %= 65;
		memcpy ((char *) uid, (char *) s, Length);
		uid[Length] = 0;
	};

//	void	Set (const VR * vr) { (*this) = (*vr); };

	const char * GetBuffer (UINT Min) const { return (&uid[0]); } ;
	void	SetLength (UINT	L)	 { Length = L; while (L < 65) uid[L++] = '\0'; };
	UINT	GetLength (void) const { return (Length); } ;

	operator const char * () const { return (&uid[0]); }

	// TRUE if zero length
	BOOL	IsEmpty () const { return (Length == 0); }

	void	Reset (void)
	{
		uid[0] = 0;
		Length = 0;
	}

	BOOL	IsValid (void) const
	{
		if (uid[0] == 0)
			return false;
		else
			return true;
	}

	BOOL	Lookup (char * TypeDesc, int DescLength) const ;
	DString Lookup (void) const
	{
		DString str;
		int l = 1024;
		Lookup (str.GetBufferSetLength (l), l);
		return str;
	}

	int Compare (const UID & uid) const { return strcmp (GetBuffer(1), uid.GetBuffer(1)); }
	int Compare (const char * lpszUIDStr) const { return strcmp (GetBuffer(1), lpszUIDStr); }

	UID & operator = (const char * lpszUIDStr)
	{
		Set (lpszUIDStr);
		return (*this);
	}

	UID & operator = (const UID & ud)
	{
		memcpy (uid, ud.GetBuffer (1), sizeof (uid));
		SetLength (ud.GetLength ());
		return (*this);
	}

	UID & operator = (const DString & s)
	{
		const char * ps = (const char *)s;
		memcpy (uid, ps, s.GetLength()%65);
		SetLength (s.GetLength ()%65);
		return (*this);
	}

	static void GetUID (UID & uid);
};


DICOM_API inline bool __stdcall operator == (const UID & s1,	const UID & s2)		{ return s1.Compare (s2) == 0; }
DICOM_API inline bool __stdcall operator == (const UID & s1,	const char * s2)	{ return s1.Compare (s2) == 0; }
DICOM_API inline bool __stdcall operator == (const char * s1,	const UID & s2)		{ return s2.Compare (s1) == 0; }
DICOM_API inline bool __stdcall operator != (const UID & s1,	const UID & s2)		{ return s1.Compare (s2) != 0; }
DICOM_API inline bool __stdcall operator != (const UID & s1,	const char * s2)	{ return s1.Compare (s2) != 0; }
DICOM_API inline bool __stdcall operator != (const char * s1,	const UID & s2)		{ return s2.Compare (s1) != 0; }
DICOM_API inline bool __stdcall operator <  (const UID & s1,	const UID & s2)		{ return s1.Compare (s2) <  0; }
DICOM_API inline bool __stdcall operator <  (const UID & s1,	const char * s2)	{ return s1.Compare (s2) <  0; }
DICOM_API inline bool __stdcall operator <  (const char * s1,	const UID & s2)		{ return s2.Compare (s1) >  0; }
DICOM_API inline bool __stdcall operator >  (const UID & s1,	const UID & s2)		{ return s1.Compare (s2) >  0; }
DICOM_API inline bool __stdcall operator >  (const UID & s1,	const char * s2)	{ return s1.Compare (s2) >  0; }
DICOM_API inline bool __stdcall operator >  (const char * s1,	const UID & s2)		{ return s2.Compare (s1) <  0; }
DICOM_API inline bool __stdcall operator <= (const UID & s1,	const UID & s2)		{ return s1.Compare (s2) <= 0; }
DICOM_API inline bool __stdcall operator <= (const UID & s1,	const char * s2)	{ return s1.Compare (s2) <= 0; }
DICOM_API inline bool __stdcall operator <= (const char * s1  , const UID & s2)		{ return s2.Compare (s1) >= 0; }
DICOM_API inline bool __stdcall operator >= (const UID & s1,	const UID & s2)		{ return s1.Compare (s2) >= 0; }
DICOM_API inline bool __stdcall operator >= (const UID & s1,	const char * s2)	{ return s1.Compare (s2) >= 0; }
DICOM_API inline bool __stdcall operator >= (const char * s1  , const UID & s2)		{ return s2.Compare (s1) <= 0; }


#endif