Copyright 1996-1998 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by John D. Polstra.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: RCS_Date.i3,v 1.1.1.1 2010-08-07 16:18:32 wagner Exp $
INTERFACE RCS_Date;
IMPORT Time;
EXCEPTION Error(TEXT);
TYPE
T = TEXT;
PROCEDURE Compare(a, b: T): [-1..1];
Compares two RCS dates.
PROCEDURE Equal(a, b: T): BOOLEAN;
Returns an indication of whether two RCS dates are equal.
PROCEDURE FromTime(t: Time.T): T;
PROCEDURE ToTime(d: T): Time.T
RAISES {Error};
PROCEDURE ToTimeApprox(d: T): Time.T;
(* same as to time, but does not raise any exceptions (issues error
messages to stderr instead) and tries to correct impossible
values *)
PROCEDURE Valid(d: T): BOOLEAN;
Checks the date for validity.
END RCS_Date.