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{
This file is part of the Free Pascal run time library.
A file in Amiga system run time library.
Copyright (c) 1998-2003 by Nils Sjoholm
member of the Amiga RTL development team.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
unit consoleio;
{
History:
First version of ConsoleIO.
This is an translation of consoleio from PCQ Pascal.
Just AttachConsole to a window and you have your
own console.
12 Sep 2000.
Added the define use_amiga_smartlink.
13 Jan 2003.
Changed integer > smallint.
10 Feb 2003.
nils.sjoholm@mailbox.swipnet.se
}
interface
uses exec, intuition, console, amigalib, conunit;
TYPE
tConsoleSet = record
WritePort,
ReadPort : pMsgPort;
WriteRequest,
ReadRequest : pIOStdReq;
Window : pWindow; { not yet used }
Buffer : Char;
end;
pConsoleSet = ^tConsoleSet;
{
ConsoleIO.p
This file implements all the normal console.device stuff for
dealing with windows. They are pulled from the ROM Kernel Manual.
See ConsoleTest.p for an example of using these routines.
}
Procedure ConPutChar(Request : pIOStdReq; Character : Char);
Procedure ConWrite(Request : pIOStdReq; Str : pchar; length : longint);
Procedure ConPutStr(Request : pIOStdReq; Str : pchar);
Procedure QueueRead(Request : pIOStdReq; Where : pchar);
Function ConGetChar(consolePort : pMsgPort; Request : pIOStdReq;
WhereTo : pchar) : Char;
Procedure CleanSet(con : pConsoleSet);
Function AttachConsole(w : pWindow) : pConsoleSet;
Function ReadKey(con : pConsoleSet) : Char;
Function KeyPressed(con : pConsoleSet) : Boolean;
Procedure WriteString(con : pConsoleSet; Str : Pchar);
Procedure WriteString(con : pConsoleSet; Str : string);
Function MaxX(con : pConsoleSet) : smallint;
Function MaxY(con : pConsoleSet) : smallint;
Function WhereX(con : pConsoleSet) : smallint;
Function WhereY(con : pConsoleSet) : smallint;
Procedure TextColor(con : pConsoleSet; pen : Byte);
Procedure TextBackground(con : pConsoleSet; pen : Byte);
Procedure DetachConsole(con : pConsoleSet);
Procedure ClrEOL(con : pConsoleSet);
Procedure ClrScr(con : pConsoleSet);
Procedure CursOff(con : pConsoleSet);
Procedure CursOn(con : pConsoleSet);
Procedure DelLine(con : pConsoleSet);
Function LongToStr (I : smallint) : String;
Procedure GotoXY(con : pConsoleSet; x,y : smallint);
Procedure InsLine(con : pConsoleSet);
Procedure OpenConsoleDevice;
Procedure CloseConsoleDevice;
implementation
Procedure ConPutChar(Request : pIOStdReq; Character : Char);
var
Error : longint;
begin
Request^.io_Command := CMD_WRITE;
Request^.io_Data := Addr(Character);
Request^.io_Length := 1;
Error := DoIO(pIORequest(Request));
end;
Procedure ConWrite(Request : pIOStdReq; Str : pchar; length : longint);
var
Error : longint;
begin
Request^.io_Command := CMD_WRITE;
Request^.io_Data := Str;
Request^.io_Length := Length;
Error := DoIO(pIORequest(Request));
end;
Procedure ConPutStr(Request : pIOStdReq; Str : pchar);
var
Error : longint;
begin
Request^.io_Command := CMD_WRITE;
Request^.io_Data := Str;
Request^.io_Length := -1;
Error := DoIO(pIORequest(Request));
end;
Procedure QueueRead(Request : pIOStdReq; Where : pchar);
begin
Request^.io_Command := CMD_READ;
Request^.io_Data := Where;
Request^.io_Length := 1;
SendIO(pIORequest(Request));
end;
Function ConGetChar(consolePort : pMsgPort; Request : pIOStdReq;
WhereTo : pchar) : Char;
var
Temp : Char;
TempMsg : pMessage;
begin
if GetMsg(consolePort) = Nil then begin
TempMsg := WaitPort(consolePort);
TempMsg := GetMsg(consolePort);
end;
Temp := WhereTo^;
QueueRead(Request, WhereTo);
ConGetChar := Temp;
end;
Procedure CleanSet(con : pConsoleSet);
begin
with con^ do begin
if ReadRequest <> Nil then
DeleteStdIO(ReadRequest);
if WriteRequest <> Nil then
DeleteStdIO(WriteRequest);
if ReadPort <> Nil then
DeletePort(ReadPort);
if WritePort <> Nil then
DeletePort(WritePort);
end;
end;
Function AttachConsole(w : pWindow) : pConsoleSet;
var
con : pConsoleSet;
Error : Boolean;
begin
New(con);
if con = Nil then
AttachConsole := Nil;
with Con^ do begin
WritePort := CreatePort(Nil, 0);
Error := WritePort = Nil;
ReadPort := CreatePort(Nil, 0);
Error := Error or (ReadPort = Nil);
if not Error then begin
WriteRequest := CreateStdIO(WritePort);
Error := Error or (WriteRequest = Nil);
ReadRequest := CreateStdIO(ReadPort);
Error := Error or (ReadRequest = Nil);
end;
if Error then begin
CleanSet(con);
Dispose(con);
AttachConsole := Nil;
end;
Window := w;
end;
with con^.WriteRequest^ do begin
io_Data := pointer(w);
io_Length := SizeOf(tWindow);
end;
Error := OpenDevice('console.device', 0,
pIORequest(con^.WriteRequest), 0) <> 0;
if Error then begin
CleanSet(con);
Dispose(con);
AttachConsole := Nil;
end;
with con^ do begin
ReadRequest^.io_Device := WriteRequest^.io_Device;
ReadRequest^.io_Unit := WriteRequest^.io_Unit;
end;
QueueRead(con^.ReadRequest, Addr(con^.Buffer));
AttachConsole := Con;
end;
Function ReadKey(con : pConsoleSet) : Char;
begin
with con^ do
ReadKey := ConGetChar(ReadPort, ReadRequest, Addr(Buffer));
end;
Function KeyPressed(con : pConsoleSet) : Boolean;
begin
with con^ do
KeyPressed := CheckIO(pIORequest(ReadRequest)) <> Nil;
end;
Procedure WriteString(con : pConsoleSet; Str : Pchar);
begin
ConPutStr(con^.WriteRequest, Str);
end;
Procedure WriteString(con : pConsoleSet; Str : string);
var
temp : string;
begin
temp := Str;
temp := temp + #0;
ConPutStr(con^.WriteRequest, @temp[1]);
end;
Function MaxX(con : pConsoleSet) : smallint;
var
CU : pConUnit;
begin
CU := pConUnit(con^.WriteRequest^.io_Unit);
MaxX := CU^.cu_XMax;
end;
Function MaxY(con : pConsoleSet) : smallint;
var
CU : pConUnit;
begin
CU := pConUnit(con^.WriteRequest^.io_Unit);
MaxY := CU^.cu_YMax;
end;
Function WhereX(con : pConsoleSet) : smallint;
var
CU : pConUnit;
begin
CU := pConUnit(con^.WriteRequest^.io_Unit);
WhereX := CU^.cu_XCP;
end;
Function WhereY(con : pConsoleSet) : smallint;
var
CU : pConUnit;
begin
CU := pConUnit(con^.WriteRequest^.io_Unit);
WhereY := CU^.cu_YCP;
end;
Procedure TextColor(con : pConsoleSet; pen : Byte);
var
CU : pConUnit;
begin
CU := pConUnit(con^.WriteRequest^.io_Unit);
CU^.cu_FgPen := pen;
end;
Procedure TextBackground(con : pConsoleSet; pen : Byte);
var
CU : pConUnit;
begin
CU := pConUnit(con^.WriteRequest^.io_Unit);
CU^.cu_BgPen := pen;
end;
Procedure DetachConsole(con : pConsoleSet);
var
TempMsg : pMessage;
begin
with con^ do begin
Forbid;
if CheckIO(pIORequest(ReadRequest)) = Nil then begin
AbortIO(pIORequest(ReadRequest));
Permit;
TempMsg := WaitPort(ReadPort);
TempMsg := GetMsg(ReadPort);
end else
Permit;
CloseDevice(pIORequest(WriteRequest));
end;
CleanSet(con);
Dispose(con);
end;
const
CSI = #27 + '[';
Procedure ClrEOL(con : pConsoleSet);
{
Clear to the end of the line
}
begin
WriteString(con, CSI + 'K');
end;
Procedure ClrScr(con : pConsoleSet);
{
Clear the text area of the window
}
begin
WriteString(con, CSI + '1;1H\cJ');
end;
Procedure CursOff(con : pConsoleSet);
{
Turn the console device's text cursor off
}
begin
WriteString(con, CSI + '0 p');
end;
Procedure CursOn(con : pConsoleSet);
{
Turn the text cursor on
}
begin
WriteString(con, CSI + ' p');
end;
{ Delete the current line, moving all the lines below it }
{ up one. The bottom line is cleared. }
Procedure DelLine(con : pConsoleSet);
begin
WriteString(con, CSI + 'M');
end;
Function LongToStr (I : smallint) : String;
Var
S : String;
begin
Str (I,S);
LongToStr:=S;
end;
Procedure GotoXY(con : pConsoleSet; x,y : smallint);
{
Move the text cursor to the x,y position. This routine uses
the ANSI CUP command.
}
var
XRep : string[7];
YRep : string[7];
begin
XRep := LongToStr(x);
YRep := LongToStr(y);
WriteString(con,CSI);
WriteString(con,(YRep));
WriteString(con,string(';'));
WriteString(con,(XRep));
WriteString(con,string('H'));
end;
{ Insert a line at the current text position. The current line and }
{ all those below it are moved down one. }
Procedure InsLine(con : pConsoleSet);
begin
WriteString(con, CSI + 'L');
end;
{
These routines just open and close the Console device without
attaching it to any window. They update ConsoleBase, and are thus required
for RawKeyConvert and DeadKeyConvert.
}
var
ConsoleRequest : tIOStdReq;
Procedure OpenConsoleDevice;
{
This procedure initializes ConsoleDevice, which is required for
CDInputHandler and RawKeyConvert.
}
var
Error : longint;
begin
Error := OpenDevice('console.device', -1, Addr(ConsoleRequest), 0);
ConsoleDevice := ConsoleRequest.io_Device;
end;
Procedure CloseConsoleDevice;
begin
CloseDevice(Addr(ConsoleRequest));
end;
end.
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