UUIDs (Universally Unique IDentifiers), also known as GUIDs (Globally Unique IDentifiers), are 128 bits long. More...

#include <UUID.hpp>

Public Member Functions
	UUID ()
	Create a new UUID.

	UUID (const String &uuidStr)
	Construct a UUID from string representation.

String	toString () const
	Get the string representation of this UUID.

Private Attributes
unsigned char	m_uuid [16]

Friends
BLOCXX_COMMON_API bool	operator== (const UUID &x, const UUID &y)

BLOCXX_COMMON_API bool	operator< (const UUID &x, const UUID &y)

Detailed Description

UUIDs (Universally Unique IDentifiers), also known as GUIDs (Globally Unique IDentifiers), are 128 bits long.

It is either guaranteed to be different from all other UUIDs/GUIDs generated until 3400 A.D. or extremely likely to be different. sizeof(UUID) == 16. The internal data is stored in network byte order, independent of host byte order.

This implementation based off of IETF internet draft: draft-leach-uuids-guids-01.txt That has expired, so if you want a real spec, see: DCE: Remote Procedure Call, Open Group CAE Specification C309 ISBN 1-85912-041-5 28cm. 674p. pbk. 1,655g. 8/94

Definition at line 62 of file UUID.hpp.

Constructor & Destructor Documentation

◆ UUID() [1/2]

BLOCXX_NAMESPACE::UUID::UUID ( )

Create a new UUID.

Version 1, based on MAC address (or random if not available) and time+counter.

Definition at line 199 of file UUID.cpp.

References m_uuid, operator==, and timestamp.

◆ UUID() [2/2]

BLOCXX_NAMESPACE::UUID::UUID ( const String & uuidStr )

Construct a UUID from string representation.

The formal definition of the UUID string representation is provided by the following extended BNF:

 UUID                   = <time_low> "-" <time_mid> "-"
                          <time_high_and_version> "-"
                          <clock_seq_and_reserved>
                          <clock_seq_low> "-" <node>
 time_low               = 4*<hexOctet>
 time_mid               = 2*<hexOctet>
 time_high_and_version  = 2*<hexOctet>
 clock_seq_and_reserved = <hexOctet>
 clock_seq_low          = <hexOctet>
 node                   = 6*<hexOctet>
 hexOctet               = <hexDigit> <hexDigit>
 hexDigit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
          | "a" | "b" | "c" | "d" | "e" | "f"
          | "A" | "B" | "C" | "D" | "E" | "F"

The following is an example of the string representation of a UUID: f81d4fae-7dec-11d0-a765-00a0c91e6bf6

Exceptions

UUIDException if uuidStr isn't valid.

Definition at line 248 of file UUID.cpp.

References BLOCXX_THROW, m_uuid, and operator==.

Member Function Documentation

◆ toString()

String BLOCXX_NAMESPACE::UUID::toString ( ) const

Get the string representation of this UUID.

The following is an example of the string representation of a UUID: f81d4fae-7dec-11d0-a765-00a0c91e6bf6

Definition at line 274 of file UUID.cpp.

References BLOCXX_NAMESPACE::String::E_TAKE_OWNERSHIP, m_uuid, and operator==.

Friends And Related Symbol Documentation

◆ operator<

BLOCXX_COMMON_API bool operator<	(	const UUID &	x,
		const UUID &	y )

friend

Definition at line 310 of file UUID.cpp.

◆ operator==

BLOCXX_COMMON_API bool operator==	(	const UUID &	x,
		const UUID &	y )

friend

Definition at line 305 of file UUID.cpp.

Referenced by toString(), UUID(), and UUID().

Member Data Documentation

◆ m_uuid

unsigned char BLOCXX_NAMESPACE::UUID::m_uuid[16]

private

Definition at line 104 of file UUID.hpp.