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{
fpGUI - Free Pascal GUI Toolkit
Copyright (C) 2005 by Michael Van Canneyt, member of
the Free Pascal development team
Copyright (C) 2013 by Graeme Geldenhuys
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
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.
Description:
Originally from the Free Pascal FCL. Since then the code has
diverged and was customised for fpGUI usage.
This is the Client Interface for the debug server, which is
based on SimpleIPC.
}
unit fpg_dbugintf;
{$mode objfpc}{$h+}
interface
uses
Classes,
fpg_base;
Type
TDebugLevel = (dlStop, dlInformation, dlWarning, dlError, dlIdentify, dlLive);
procedure SendBoolean(const Identifier: string; const Value: Boolean);
procedure SendDateTime(const Identifier: string; const Value: TDateTime);
procedure SendInteger(const Identifier: string; const Value: Integer; HexNotation: Boolean = False);
procedure SendPoint(const Identifier: string; const Value: TPoint; const ADbgLevel: TDebugLevel = dlLive);
procedure SendPointer(const Identifier: string; const Value: Pointer);
procedure SendRect(const Identifier: string; const Value: TRect; const ADbgLevel: TDebugLevel = dlInformation);
procedure SendRect(const Identifier: string; const Value: TfpgRect; const ADbgLevel: TDebugLevel = dlInformation);
procedure SendDebugEx(const Msg: string; MType: TDebugLevel);
procedure SendDebug(const Msg: string);
procedure SendMethodEnter(const MethodName: string);
procedure SendMethodExit(const MethodName: string);
procedure SendSeparator;
procedure SendDebugFmt(const Msg: string; const Args: array of const);
procedure SendDebugFmtEx(const Msg: string; const Args: array of const; MType: TDebugLevel; const ATitle: string = '');
procedure SetDebuggingEnabled(const AValue : boolean);
function GetDebuggingEnabled : Boolean;
{ low-level routines }
Function StartDebugServer : integer;
Function InitDebugClient : Boolean;
Function DebugMessageName(msgType: TDebugLevel) : String;
Const
SendError : String = '';
ResourceString
SProcessID = 'Process %s';
SEntering = '> Entering ';
SExiting = '< Exiting ';
SSeparator = '>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-<';
SServerStartFailed = 'Failed to start debugserver. (%s)';
implementation
Uses
SysUtils,
process,
simpleipc,
fpg_dbugmsg;
const
IndentChars = 2;
var
DebugClient : TSimpleIPCClient = nil;
MsgBuffer : TMemoryStream = Nil;
ServerID : Integer;
DebugDisabled : Boolean = False;
Indent : Integer = 0;
function RectToStr(const ARect: TRect): String;
begin
with ARect do
Result := Format('(Left: %d; Top: %d; Right: %d; Bottom: %d)', [Left, Top, Right, Bottom]);
end;
function fpgRectToStr(const ARect: TfpgRect): String;
begin
with ARect do
Result := Format('(Left: %d; Top: %d; Width: %d; Height: %d)', [Left, Top, Width, Height]);
end;
function PointToStr(const APoint: TPoint): String;
begin
with APoint do
Result := Format('(X: %d; Y: %d)', [X, Y]);
end;
procedure WriteMessage(Const Msg : TDebugMessage);
begin
MsgBuffer.Seek(0, soFromBeginning);
WriteDebugMessageToStream(MsgBuffer, Msg);
DebugClient.SendMessage(mtUnknown, MsgBuffer);
end;
procedure SendDebugMessage(Var Msg : TDebugMessage);
begin
if DebugDisabled then exit;
try
If (DebugClient=Nil) then
if InitDebugClient = false then exit;
if (Indent > 0) then
Msg.Msg := StringOfChar(' ', Indent) + Msg.Msg;
WriteMessage(Msg);
except
On E: Exception do
SendError := E.Message;
end;
end;
procedure SendBoolean(const Identifier: string; const Value: Boolean);
const
Booleans : Array[Boolean] of string = ('False','True');
begin
SendDebugFmt('%s = %s',[Identifier,Booleans[value]]);
end;
procedure SendDateTime(const Identifier: string; const Value: TDateTime);
begin
SendDebugFmt('%s = %s',[Identifier,DateTimeToStr(Value)]);
end;
procedure SendInteger(const Identifier: string; const Value: Integer; HexNotation: Boolean = False);
const
Msgs : Array[Boolean] of string = ('%s = %d','%s = %x');
begin
SendDebugFmt(Msgs[HexNotation],[Identifier,Value]);
end;
procedure SendPoint(const Identifier: string; const Value: TPoint; const ADbgLevel: TDebugLevel);
begin
SendDebugFmtEx('%s = %s',[Identifier, PointToStr(Value)], ADbgLevel);
end;
procedure SendPointer(const Identifier: string; const Value: Pointer);
begin
SendDebugFmt('%s = %p',[Identifier,Value]);
end;
procedure SendRect(const Identifier: string; const Value: TRect; const ADbgLevel: TDebugLevel);
begin
SendDebugFmtEx('%s',[RectToStr(Value)], ADbgLevel, Identifier);
end;
procedure SendRect(const Identifier: string; const Value: TfpgRect; const ADbgLevel: TDebugLevel);
begin
SendDebugFmtEx('%s',[fpgRectToStr(Value)], ADbgLevel, Identifier);
end;
procedure SendDebugEx(const Msg: string; MType: TDebugLevel);
var
Mesg : TDebugMessage;
begin
Mesg.MsgTimeStamp:=Now;
Mesg.MsgType:=Ord(MTYpe);
Mesg.Msg:=Msg;
SendDebugMessage(Mesg);
end;
procedure SendDebug(const Msg: string);
var
Mesg : TDebugMessage;
begin
Mesg.MsgTimeStamp:=Now;
Mesg.MsgType:=Ord(dlInformation);
Mesg.Msg:=Msg;
SendDebugMessage(Mesg);
end;
procedure SendMethodEnter(const MethodName: string);
begin
SendDebug(SEntering+MethodName);
inc(Indent,IndentChars);
end;
procedure SendMethodExit(const MethodName: string);
begin
Dec(Indent,IndentChars);
If (Indent<0) then
Indent:=0;
SendDebug(SExiting+MethodName);
end;
procedure SendSeparator;
begin
SendDebug(SSeparator);
end;
procedure SendDebugFmt(const Msg: string; const Args: array of const);
var
Mesg : TDebugMessage;
begin
Mesg.MsgTimeStamp:=Now;
Mesg.MsgType:= Ord(dlInformation);
Mesg.Msg:=Format(Msg,Args);
SendDebugMessage(Mesg);
end;
procedure SendDebugFmtEx(const Msg: string; const Args: array of const; MType: TDebugLevel; const ATitle: string);
var
Mesg: TDebugMessage;
begin
Mesg.MsgTimeStamp := Now;
Mesg.MsgType := Ord(mType);
if MType = dlLive then
Mesg.MsgTitle := ATitle
else
Mesg.MsgTitle := ' ';
Mesg.Msg := Format(Msg,Args);
SendDebugMessage(Mesg);
end;
procedure SetDebuggingEnabled(const AValue: boolean);
begin
DebugDisabled := not AValue;
end;
function GetDebuggingEnabled: Boolean;
begin
Result := not DebugDisabled;
end;
function StartDebugServer : Integer;
begin
With TProcess.Create(Nil) do
begin
Try
CommandLine:='dbugsrv';
Execute;
Result:=ProcessID;
Except On E: Exception do
begin
SendError := Format(SServerStartFailed,[E.Message]);
Result := 0;
end;
end;
Free;
end;
end;
procedure FreeDebugClient;
var
msg : TDebugMessage;
begin
try
If (DebugClient<>Nil) and
(DebugClient.ServerRunning) then
begin
Msg.MsgType := Ord(dlStop);
Msg.MsgTimeStamp := Now;
Msg.Msg := Format(SProcessID,[ApplicationName]);
WriteMessage(Msg);
end;
if assigned(MsgBuffer) then
FreeAndNil(MsgBuffer);
if assigned(DebugClient) then
FreeAndNil(DebugClient);
except
end;
end;
function InitDebugClient : Boolean;
var
msg : TDebugMessage;
I : Integer;
begin
Result := False;
DebugClient:=TSimpleIPCClient.Create(Nil);
DebugClient.ServerID:=DebugServerID;
If not DebugClient.ServerRunning then
begin
ServerID:=StartDebugServer;
if ServerID = 0 then
begin
DebugDisabled := True;
FreeAndNil(DebugClient);
Exit;
end
else
DebugDisabled := False;
I:=0;
While (I<10) and not DebugClient.ServerRunning do
begin
Inc(I);
Sleep(100);
end;
end;
try
DebugClient.Connect;
except
FreeAndNil(DebugClient);
DebugDisabled:=True;
Raise;
end;
MsgBuffer := TMemoryStream.Create;
Msg.MsgType := Ord(dlIdentify);
Msg.MsgTimeStamp := Now;
Msg.Msg := Format(SProcessID,[ApplicationName]);
WriteMessage(Msg);
Result := True;
end;
Function DebugMessageName(msgType : TDebugLevel) : String;
begin
Case MsgType of
dlStop : Result := 'Stop';
dlInformation : Result := 'Information';
dlWarning : Result := 'Warning';
dlError : Result := 'Error';
dlIdentify : Result := 'Identify';
dlLive : Result := 'LiveView';
else
Result := 'Unknown';
end;
end;
finalization
FreeDebugClient;
end.
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