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295 | ------------------------------------------------------------------
-- Tokeneer ID Station Support Software
--
-- Copyright (2003) United States Government, as represented
-- by the Director, National Security Agency. All rights reserved.
--
-- This material was originally developed by Praxis High Integrity
-- Systems Ltd. under contract to the National Security Agency.
------------------------------------------------------------------
------------------------------------------------------------------
-- DisplayAPI
--
-- Implementation Notes:
-- None
--
------------------------------------------------------------------
with TcpIp;
with Ada.Strings.Fixed;
with MsgProc;
package body DisplayAPI
with SPARK_Mode => Off -- exception handlers
is
------------------------------------------------------------------
-- GetMaxTextSizeTop
--
-- Implementation Notes:
-- None.
--
------------------------------------------------------------------
function GetMaxTextSizeTop return CommonTypes.Unsigned32T
is
InMsg : TcpIp.MessageT;
OutMsg : constant TcpIp.MessageT :=
(Data => Ada.Strings.Fixed.Overwrite
(Source => TcpIp.NullMsg.Data,
Position => 1,
New_Item => "display.getMaxTextSizeTop()"),
Length => 27);
-- Default return value. Won't raise system fault here, just
-- set to minimum value.
LocalReturn : CommonTypes.Unsigned32T := 20;
CommsIsOK : Boolean;
begin
TcpIp.SendAndReceive (IsAdmin => False,
Outgoing => OutMsg,
Incoming => InMsg,
Success => CommsIsOK);
if CommsIsOK then
-- InMsg.Data is of form ('OK[:optional]', 'val')
declare Msg : String :=
MsgProc.GetResponseFromMsg(InMsg);
begin
LocalReturn := CommonTypes.Unsigned32T(
Integer'Value(
MsgProc.GetStringByPos(Msg => Msg,
Arg => 1)));
end;
end if;
return LocalReturn;
exception
when E : others =>
return 20;
end GetMaxTextSizeTop;
------------------------------------------------------------------
-- GetMaxTextSizeBottom
--
-- Implementation Notes:
-- None
--
------------------------------------------------------------------
function GetMaxTextSizeBottom return CommonTypes.Unsigned32T is
InMsg : TcpIp.MessageT;
OutMsg : constant TcpIp.MessageT :=
(Data => Ada.Strings.Fixed.Overwrite
(Source => TcpIp.NullMsg.Data,
Position => 1,
New_Item => "display.getMaxTextSizeBottom()"),
Length => 30);
-- Default return value. Won't raise system fault here, just set
-- to minimum value.
LocalReturn : CommonTypes.Unsigned32T := 20;
CommsIsOK : Boolean;
begin
TcpIp.SendAndReceive (IsAdmin => False,
Outgoing => OutMsg,
Incoming => InMsg,
Success => CommsIsOK);
if CommsIsOK then
-- InMsg.Data is of form ('OK[:optional]', 'val')
declare Msg : String :=
MsgProc.GetResponseFromMsg(InMsg);
begin
LocalReturn := CommonTypes.Unsigned32T(
Integer'Value(
MsgProc.GetStringByPos(Msg => Msg,
Arg => 1)));
end;
end if;
return LocalReturn;
exception
when E : others =>
return 20;
end GetMaxTextSizeBottom;
------------------------------------------------------------------
-- SetTopText
--
-- Implementation Notes:
-- None
--
------------------------------------------------------------------
procedure SetTopText (TopText : in String;
Written : out Boolean)
is
OutMsg : constant TcpIp.MessageT :=
(Data => Ada.Strings.Fixed.Overwrite
(Source => TcpIp.NullMsg.Data,
Position => 1,
New_Item => "display.setTopText('" & TopText & "',)"),
Length => 23 + TopText'Length);
InMsg : TcpIp.MessageT;
CommsIsOK : Boolean;
begin
TcpIp.SendAndReceive (IsAdmin => False,
Outgoing => OutMsg,
Incoming => InMsg,
Success => CommsIsOK);
if CommsIsOK then
-- InMsg.Data is of form ('OK[:optional]', 'val')
declare Msg : String :=
MsgProc.GetResponseFromMsg(InMsg);
begin
Written := Boolean'Value(
MsgProc.GetStringByPos(Msg => Msg,
Arg => 1));
end;
else
Written := False;
end if;
exception
when E : others =>
Written := False;
end SetTopText;
------------------------------------------------------------------
-- SetBottomText
--
-- Implementation Notes:
-- None.
--
------------------------------------------------------------------
procedure SetBottomText (BottomText : in String;
Written : out Boolean)
is
OutMsg : constant TcpIp.MessageT :=
(Data => Ada.Strings.Fixed.Overwrite(
Source => TcpIp.NullMsg.Data,
Position => 1,
New_Item => "display.setBottomText('" &
BottomText &
"',)"),
Length => 26 + BottomText'Length);
InMsg : TcpIp.MessageT;
CommsIsOK : Boolean;
begin
TcpIp.SendAndReceive (IsAdmin => False,
Outgoing => OutMsg,
Incoming => InMsg,
Success => CommsIsOK);
if CommsIsOK then
-- InMsg.Data is of form ('OK[:optional]', 'val')
declare Msg : String :=
MsgProc.GetResponseFromMsg(InMsg);
begin
Written := Boolean'Value(
MsgProc.GetStringByPos(Msg => Msg,
Arg => 1));
end;
else
Written := False;
end if;
exception
when E : others =>
Written := False;
end SetBottomText;
------------------------------------------------------------------
-- SetTopTextScrollable
--
-- Implementation Notes:
-- None.
--
------------------------------------------------------------------
procedure SetTopTextScrollable (ScrollText : in String;
Written : out Boolean)
is
OutMsg : constant TcpIp.MessageT :=
(Data => Ada.Strings.Fixed.Overwrite
(Source => TcpIp.NullMsg.Data,
Position => 1,
New_Item => "display.setTopTextScrollable('"
& ScrollText & "',)"),
Length => 33 + ScrollText'Length);
InMsg : TcpIp.MessageT;
CommsIsOK : Boolean;
begin
TcpIp.SendAndReceive (IsAdmin => False,
Outgoing => OutMsg,
Incoming => InMsg,
Success => CommsIsOK);
if CommsIsOK then
-- InMsg.Data is of form ('OK[:optional]', 'val')
declare Msg : String :=
MsgProc.GetResponseFromMsg(InMsg);
begin
Written := Boolean'Value(
MsgProc.GetStringByPos(Msg => Msg,
Arg => 1));
end;
else
Written := False;
end if;
exception
when E : others =>
Written := False;
end SetTopTextScrollable;
------------------------------------------------------------------
-- Reset
--
-- Implementation Notes:
-- None.
--
------------------------------------------------------------------
procedure Reset (Success : out Boolean)
is
OutMsg : constant TcpIp.MessageT :=
(Data => Ada.Strings.Fixed.Overwrite
(Source => TcpIp.NullMsg.Data,
Position => 1,
New_Item => "display.reset()"),
Length => 15);
DontCareInMsg : TcpIp.MessageT;
begin
TcpIp.SendAndReceive (IsAdmin => False,
Outgoing => OutMsg,
Incoming => DontCareInMsg,
Success => Success);
end Reset;
end DisplayAPI;
|