------------------------------------------------------------------------------
-- Copyright (c) 2014, Natacha Porté --
-- --
-- Permission to use, copy, modify, and distribute this software for any --
-- purpose with or without fee is hereby granted, provided that the above --
-- copyright notice and this permission notice appear in all copies. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. --
------------------------------------------------------------------------------
------------------------------------------------------------------------------
-- Natools.Time_IO.RFC_3339 provides subprograms to serialize and --
-- deserialize times to and from String representations according to --
-- RFC 3339, which is also a valid subset of ISO 8601. --
------------------------------------------------------------------------------
with Ada.Calendar.Time_Zones;
package Natools.Time_IO.RFC_3339 is
Date_Separator : constant Character := '-';
Date_Time_Separator : constant Character := 'T';
Time_Separator : constant Character := ':';
Subsecond_Separator : constant Character := '.';
function Is_Valid (Image : String) return Boolean;
-- Check whether Image is a valid RFC-3339 date
function Image
(Date : Ada.Calendar.Time;
Subsecond_Digits : Natural := 0)
return String
with Post => Is_Valid (Image'Result);
-- Return the RFC-3339 representation of Date in current time zone
function Image
(Date : Ada.Calendar.Time;
Time_Zone : Ada.Calendar.Time_Zones.Time_Offset;
Subsecond_Digits : Natural := 0)
return String
with Post => Is_Valid (Image'Result);
-- Return the RFC-3339 representation of Date in Time_Zone
function Value (Image : String) return Ada.Calendar.Time
with Pre => Is_Valid (Image) or else raise Constraint_Error;
-- Return the time associated with the given RFC-3339 representation
procedure Value
(Image : in String;
Date : out Ada.Calendar.Time;
Time_Zone : out Ada.Calendar.Time_Zones.Time_Offset)
with Pre => Is_Valid (Image) or else raise Constraint_Error;
-- Return the time associated with the given RFC-3339 representation
end Natools.Time_IO.RFC_3339;