View source with raw comments or as raw

    1/*  Part of SWI-Prolog
    2
    3    Author:        Jan Wielemaker
    4    E-mail:        J.Wielemaker@vu.nl
    5    WWW:           http://www.swi-prolog.org
    6    Copyright (c)  2012, VU University Amsterdam
    7    All rights reserved.
    8
    9    Redistribution and use in source and binary forms, with or without
   10    modification, are permitted provided that the following conditions
   11    are met:
   12
   13    1. Redistributions of source code must retain the above copyright
   14       notice, this list of conditions and the following disclaimer.
   15
   16    2. Redistributions in binary form must reproduce the above copyright
   17       notice, this list of conditions and the following disclaimer in
   18       the documentation and/or other materials provided with the
   19       distribution.
   20
   21    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   22    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   23    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   24    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   25    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   26    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   27    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   28    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   29    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   31    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   32    POSSIBILITY OF SUCH DAMAGE.
   33*/
   34
   35:- module(uuid,
   36          [ uuid/1,                     % -UUID
   37            uuid/2                      % -UUID, +Options
   38          ]).

Universally Unique Identifier (UUID) Library

The library provides operations on UUIDs. Please consult other sources for understanding UUIDs and the implications of the different UUID versions. Some typical calls are given below:

?- uuid(X).
X = 'ea6589fa-19dd-11e2-8a49-001d92e1879d'.

?- uuid(X, [url('http://www.swi-prolog.org')]).
X = '73a07870-6a90-3f2e-ae2b-ffa538dc7c2c'.

See also: - http://www.ossp.org/pkg/lib/uuid/ */
To be done: - Compare UUIDs, extract time and version from UUIDs

   58:- use_foreign_library(foreign(uuid)).

uuid(-UUID) is det: UUID is an atom representing a new UUID. This is the same as calling uuid(UUID, []). See uuid/2 for options.

   65uuid(UUID) :-
   66    uuid(UUID, []).

uuid(-UUID, +Options) is det

Create a new UUID according to Options. The following options are defined:

version(+Versions): Integer in the range 1..5, which specifies the UUID version that is created. Default is 1.
dns(DNS)
url(URL)
oid(OID)
x500(X500): Provide additional context information for UUIDs using version 3 or 5. If there is no explicit version option, UUID version 3 is used.
format(+Format): Representation of the UUID. Default is atom, yielding atoms such as 8304efdd-bd6e-5b7c-a27f-83f3f05c64e0. The alternative is integer, returning a large integer that represents the 128 bits of the UUID.