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146 | -- Copyright (C)2020-2024, Philip Munts dba Munts Technologies.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are met:
--
-- * Redistributions of source code must retain the above copyright notice,
-- this list of conditions and the following disclaimer.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
WITH Ada.Calendar;
WITH Ada.Containers.Vectors;
WITH Ada.Strings.Fixed;
WITH Ada.Text_IO; USE Ada.Text_IO;
WITH Sprinkler.Valves;
PACKAGE BODY Sprinkler.Program IS
-- Data declarations
TYPE Step IS RECORD
zone : ZoneNumber;
valve : Sprinkler.Valve;
start_second : Duration;
stop_second : Duration;
END RECORD;
PACKAGE StepVectors IS NEW Ada.Containers.Vectors(Positive, Step);
Steps : StepVectors.Vector;
-- Add a watering program step.
PROCEDURE Add
(zone : ZoneNumber;
start_hour : Hour;
stop_hour : Hour) IS
valve : CONSTANT Sprinkler.Valve := Sprinkler.Valves.Lookup(zone);
BEGIN
IF start_hour > stop_hour THEN
RAISE Error WITH "Start hour is after stop hour";
END IF;
Put_Line(" Zone " &
Ada.Strings.Fixed.Trim(ZoneNumber'Image(zone), Ada.Strings.Both) &
" start hour " &
Ada.Strings.Fixed.Trim(Hour'Image(start_hour), Ada.Strings.Both) &
" stop hour " &
Ada.Strings.Fixed.Trim(Hour'Image(stop_hour), Ada.Strings.Both));
Steps.Append(Step'(zone, valve, Duration(start_hour)*3600.0,
Duration(stop_hour)*3600.0));
END Add;
-- Load a watering program from a text file with the following semantics:
-- Any line containing only white space is ignored.
-- Any line beginning with # is ignored.
-- A configuraton line consists of three numeric fields separated by
-- whitespace: watering zone number (Positive), start hour (Fixed Point) and
-- stop hour (Fixed Point).
PROCEDURE LoadFromFile(filename : String) IS
F : File_Type;
BEGIN
Open(F, In_File, filename);
LOOP
<<Continue>>
DECLARE
inbuf : String :=
Ada.Strings.Fixed.Trim(Get_Line(F), Ada.Strings.Both);
zone : ZoneNumber;
start : Hour;
stop : Hour;
last : Positive;
BEGIN
-- Ignore blank lines
IF inbuf'Length = 0 THEN
GOTO Continue;
END IF;
-- Ignore comment lines
IF inbuf(1) = '#' THEN
GOTO Continue;
END IF;
ZoneNumber_IO.Get(inbuf(1 .. inbuf'Last), zone, last);
Hour_IO.Get(inbuf(last + 1 .. inbuf'Last), start, last);
Hour_IO.Get(inbuf(last + 1 .. inbuf'Last), stop, last);
Add(zone, start, stop);
END;
END LOOP;
EXCEPTION
WHEN End_Error =>
Close(F);
RETURN;
WHEN Name_Error =>
RAISE;
WHEN OTHERS =>
Close(F);
RAISE;
END LoadFromFile;
-- Execute the watering program.
PROCEDURE Execute IS
T : CONSTANT Duration := Ada.Calendar.Seconds(Ada.Calendar.Clock);
Watering : Boolean;
BEGIN
FOR S OF Steps LOOP
Watering := (T >= S.start_second AND T <= S.stop_second);
IF Watering AND NOT S.valve.Get THEN
Ada.Text_IO.Put_Line("Turning zone" & ZoneNumber'Image(S.zone) & " ON");
S.valve.Put(True);
ELSIF NOT Watering AND S.valve.Get THEN
Ada.Text_IO.Put_Line("Turning zone" & ZoneNumber'Image(S.zone) & " OFF");
S.Valve.Put(False);
END IF;
END LOOP;
END Execute;
END Sprinkler.Program;
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