mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-04-26 13:04:14 +02:00
399 lines
9.7 KiB
ObjectPascal
399 lines
9.7 KiB
ObjectPascal
{ $Id$ }
|
|
{ -------------------------------------------
|
|
dbgutils.pp - Debugger utility routines
|
|
-------------------------------------------
|
|
|
|
@created(Sun Apr 28st WET 2002)
|
|
@lastmod($Date$)
|
|
@author(Marc Weustink <marc@@dommelstein.net>)
|
|
|
|
This unit contains a collection of debugger support routines.
|
|
|
|
***************************************************************************
|
|
* *
|
|
* This source is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This code 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. See the GNU *
|
|
* General Public License for more details. *
|
|
* *
|
|
* A copy of the GNU General Public License is available on the World *
|
|
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
|
|
* obtain it by writing to the Free Software Foundation, *
|
|
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
|
* *
|
|
***************************************************************************
|
|
}
|
|
unit DebugUtils;
|
|
|
|
{$mode objfpc}{$H+}
|
|
|
|
interface
|
|
|
|
uses
|
|
Classes, LCLProc;
|
|
|
|
type
|
|
|
|
{ TDelayedUdateItem }
|
|
|
|
TDelayedUdateItem = class(TCollectionItem)
|
|
private
|
|
FUpdateCount: Integer;
|
|
FDoChanged: Boolean;
|
|
protected
|
|
procedure Changed;
|
|
procedure DoChanged; virtual;
|
|
procedure DoEndUpdate; virtual; // even if not changed
|
|
public
|
|
procedure Assign(ASource: TPersistent); override;
|
|
procedure BeginUpdate;
|
|
constructor Create(ACollection: TCollection); override;
|
|
procedure EndUpdate;
|
|
function IsUpdating: Boolean;
|
|
end;
|
|
|
|
|
|
TPCharWithLen = record
|
|
Ptr: PChar;
|
|
Len: Integer;
|
|
end;
|
|
|
|
function GetLine(var ABuffer: String): String;
|
|
function ConvertToCString(const AText: String): String;
|
|
function ConvertPathDelims(const AFileName: String): String;
|
|
function DeleteEscapeChars(const AValue: String; const AEscapeChar: Char = '\'): String;
|
|
function UnEscapeOctal(const AValue: String): String;
|
|
function UnQuote(const AValue: String): String;
|
|
function ConvertGdbPathAndFile(const AValue: String): String; // fix path, delim, unescape, and to utf8
|
|
|
|
procedure SmartWriteln(const s: string);
|
|
|
|
function PCLenPartToString(const AVal: TPCharWithLen; AStartOffs, ALen: Integer): String;
|
|
function PCLenToString(const AVal: TPCharWithLen; UnQuote: Boolean = False): String;
|
|
function PCLenToInt(const AVal: TPCharWithLen; Def: Integer = 0): Integer;
|
|
function PCLenToQWord(const AVal: TPCharWithLen; Def: QWord = 0): QWord;
|
|
function DbgsPCLen(const AVal: TPCharWithLen): String;
|
|
|
|
implementation
|
|
|
|
uses
|
|
SysUtils;
|
|
|
|
{ SmartWriteln: }
|
|
var
|
|
LastSmartWritelnStr: string;
|
|
LastSmartWritelnCount: integer;
|
|
LastSmartWritelnTime: double;
|
|
|
|
procedure SmartWriteln(const s: string);
|
|
var
|
|
TimeDiff: TTimeStamp;
|
|
i: Integer;
|
|
begin
|
|
if (LastSmartWritelnCount>0) and (s=LastSmartWritelnStr) then begin
|
|
TimeDiff:=DateTimeToTimeStamp(Now-LastSmartWritelnTime);
|
|
if TimeDiff.Time<1000 then begin
|
|
// repeating too fast
|
|
inc(LastSmartWritelnCount);
|
|
// write every 2nd, 4th, 8th, 16th, ... time
|
|
i:=LastSmartWritelnCount;
|
|
while (i>0) and ((i and 1)=0) do begin
|
|
i:=i shr 1;
|
|
if i=1 then begin
|
|
DebugLn('Last message repeated %d times: "%s"',
|
|
[LastSmartWritelnCount, LastSmartWritelnStr]);
|
|
break;
|
|
end;
|
|
end;
|
|
exit;
|
|
end;
|
|
end;
|
|
LastSmartWritelnTime:=Now;
|
|
LastSmartWritelnStr:=s;
|
|
LastSmartWritelnCount:=1;
|
|
DebugLn(LastSmartWritelnStr);
|
|
end;
|
|
|
|
function GetLine(var ABuffer: String): String;
|
|
var
|
|
idx: Integer;
|
|
begin
|
|
idx := Pos(#10, ABuffer);
|
|
if idx = 0
|
|
then Result := ''
|
|
else begin
|
|
Result := Copy(ABuffer, 1, idx);
|
|
Delete(ABuffer, 1, idx);
|
|
end;
|
|
end;
|
|
|
|
function ConvertToCString(const AText: String): String;
|
|
var
|
|
srclen, dstlen, newlen: Integer;
|
|
src, dst: PChar;
|
|
begin
|
|
srclen := Length(AText);
|
|
Setlength(Result, srclen);
|
|
dstlen := srclen;
|
|
src := @AText[1];
|
|
dst := @Result[1];
|
|
newlen := 0;
|
|
while srclen > 0 do
|
|
begin
|
|
if newlen >= dstlen
|
|
then begin
|
|
Inc(dstlen, 8);
|
|
SetLength(Result, dstlen);
|
|
dst := @Result[newlen+1];
|
|
end;
|
|
case Src[0] of
|
|
'''': begin
|
|
if (srclen > 2) and (Src[1] = '''')
|
|
then begin
|
|
Inc(src);
|
|
Dec(srclen);
|
|
Continue;
|
|
end;
|
|
dst^ := '"';
|
|
end;
|
|
'"': begin
|
|
if newlen+1 >= dstlen
|
|
then begin
|
|
Inc(dstlen, 8);
|
|
SetLength(Result, dstlen);
|
|
dst := @Result[newlen+1];
|
|
end;
|
|
dst^ := '"';
|
|
Inc(dst);
|
|
Inc(newlen);
|
|
dst^ := '"';
|
|
end;
|
|
else
|
|
dst^ := src^;
|
|
end;
|
|
Inc(src);
|
|
Inc(dst);
|
|
Inc(newlen);
|
|
Dec(srclen);
|
|
end;
|
|
SetLength(Result, newlen);
|
|
end;
|
|
|
|
function ConvertPathDelims(const AFileName: String): String;
|
|
var
|
|
i: Integer;
|
|
begin
|
|
Result := AFileName;
|
|
for i := 1 to length(Result) do
|
|
if Result[i] in ['/','\'] then
|
|
Result[i] := PathDelim;
|
|
end;
|
|
|
|
function UnEscapeOctal(const AValue: String): String;
|
|
var
|
|
c, cnt, len: Integer;
|
|
Src, Dst: PChar;
|
|
begin
|
|
len := Length(AValue);
|
|
if len = 0 then Exit('');
|
|
|
|
Src := @AValue[1];
|
|
cnt := len;
|
|
SetLength(Result, len); // allocate initial space
|
|
|
|
Dst := @Result[1];
|
|
while cnt > 0 do
|
|
begin
|
|
if (Src^ = '\') and ((Src+1)^ in ['0'..'7', '\'])
|
|
then begin
|
|
inc(Src);
|
|
dec(cnt);
|
|
if Src^ <> '\'
|
|
then begin
|
|
c := 0;
|
|
while (Src^ in ['0'..'7']) and (cnt > 0)
|
|
do begin
|
|
c := (c * 8) + ord(Src^) - ord('0');
|
|
Inc(Src);
|
|
Dec(cnt);
|
|
end;
|
|
//c := UnicodeToUTF8SkipErrors(c, Dst);
|
|
//inc(Dst, c);
|
|
Dst^ := chr(c and 255);
|
|
if (c and 255) <> 0
|
|
then Inc(Dst);
|
|
if cnt = 0 then Break;
|
|
continue;
|
|
end;
|
|
end;
|
|
Dst^ := Src^;
|
|
Inc(Dst);
|
|
Inc(Src);
|
|
Dec(cnt);
|
|
end;
|
|
|
|
SetLength(Result, Dst - @Result[1]); // adjust to actual length
|
|
end;
|
|
|
|
function Unquote(const AValue: String): String;
|
|
var
|
|
len: Integer;
|
|
begin
|
|
len := Length(AValue);
|
|
if len < 2 then Exit(AValue);
|
|
|
|
if (AValue[1] = '"') and (AValue[len] = '"')
|
|
then Result := Copy(AValue, 2, len - 2)
|
|
else Result := AValue;
|
|
end;
|
|
|
|
function ConvertGdbPathAndFile(const AValue: String): String;
|
|
begin
|
|
Result := AnsiToUtf8(ConvertPathDelims(UnEscapeOctal(AValue)));
|
|
end;
|
|
|
|
function DeleteEscapeChars(const AValue: String; const AEscapeChar: Char): String;
|
|
var
|
|
cnt, len: Integer;
|
|
Src, Dst: PChar;
|
|
begin
|
|
len := Length(AValue);
|
|
if len = 0 then Exit('');
|
|
|
|
Src := @AValue[1];
|
|
cnt := len;
|
|
SetLength(Result, len); // allocate initial space
|
|
|
|
Dst := @Result[1];
|
|
while cnt > 0 do
|
|
begin
|
|
if Src^ = AEscapeChar
|
|
then begin
|
|
Dec(len);
|
|
Dec(cnt);
|
|
if cnt = 0 then Break;
|
|
Inc(Src);
|
|
end;
|
|
Dst^ := Src^;
|
|
Inc(Dst);
|
|
Inc(Src);
|
|
Dec(cnt);
|
|
end;
|
|
|
|
SetLength(Result, len); // adjust to actual length
|
|
end;
|
|
|
|
{ TPCharWithLen }
|
|
|
|
function PCLenPartToString(const AVal: TPCharWithLen; AStartOffs, ALen: Integer): String;
|
|
begin
|
|
if AStartOffs + ALen > AVal.Len
|
|
then ALen := AVal.Len - AStartOffs;
|
|
if ALen <= 0
|
|
then exit('');
|
|
|
|
SetLength(Result, ALen);
|
|
Move((AVal.Ptr+AStartOffs)^, Result[1], aLen)
|
|
end;
|
|
|
|
function PCLenToString(const AVal: TPCharWithLen; UnQuote: Boolean = False): String;
|
|
begin
|
|
if UnQuote and (AVal.Len >= 2) and (AVal.Ptr[0] = '"') and (AVal.Ptr[AVal.Len-1] = '"')
|
|
then begin
|
|
SetLength(Result, AVal.Len - 2);
|
|
if AVal.Len > 2
|
|
then Move((AVal.Ptr+1)^, Result[1], AVal.Len - 2)
|
|
end
|
|
else begin
|
|
SetLength(Result, AVal.Len);
|
|
if AVal.Len > 0
|
|
then Move(AVal.Ptr^, Result[1], AVal.Len)
|
|
end;
|
|
end;
|
|
|
|
function PCLenToInt(const AVal: TPCharWithLen; Def: Integer = 0): Integer;
|
|
begin
|
|
Result := StrToIntDef(PCLenToString(AVal, True), Def);
|
|
end;
|
|
|
|
function PCLenToQWord(const AVal: TPCharWithLen; Def: QWord = 0): QWord;
|
|
begin
|
|
Result := StrToQWordDef(PCLenToString(AVal, True), Def);
|
|
end;
|
|
|
|
function DbgsPCLen(const AVal: TPCharWithLen): String;
|
|
begin
|
|
Result := PCLenToString(AVal);
|
|
end;
|
|
|
|
|
|
|
|
{ TDelayedUdateItem }
|
|
|
|
procedure TDelayedUdateItem.Assign(ASource: TPersistent);
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
inherited Assign(ASource);
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
|
|
procedure TDelayedUdateItem.BeginUpdate;
|
|
begin
|
|
Inc(FUpdateCount);
|
|
if FUpdateCount = 1 then FDoChanged := False;
|
|
end;
|
|
|
|
procedure TDelayedUdateItem.Changed;
|
|
begin
|
|
if FUpdateCount > 0
|
|
then FDoChanged := True
|
|
else DoChanged;
|
|
end;
|
|
|
|
constructor TDelayedUdateItem.Create(ACollection: TCollection);
|
|
begin
|
|
inherited Create(ACollection);
|
|
FUpdateCount := 0;
|
|
end;
|
|
|
|
procedure TDelayedUdateItem.DoChanged;
|
|
begin
|
|
inherited Changed(False);
|
|
end;
|
|
|
|
procedure TDelayedUdateItem.DoEndUpdate;
|
|
begin
|
|
//
|
|
end;
|
|
|
|
procedure TDelayedUdateItem.EndUpdate;
|
|
begin
|
|
Dec(FUpdateCount);
|
|
if FUpdateCount < 0 then raise EInvalidOperation.Create('TDelayedUdateItem.EndUpdate');
|
|
if (FUpdateCount = 0)
|
|
then DoEndUpdate;
|
|
if (FUpdateCount = 0) and FDoChanged
|
|
then begin
|
|
DoChanged;
|
|
FDoChanged := False;
|
|
end;
|
|
end;
|
|
|
|
function TDelayedUdateItem.IsUpdating: Boolean;
|
|
begin
|
|
Result := FUpdateCount > 0;
|
|
end;
|
|
|
|
initialization
|
|
LastSmartWritelnCount:=0;
|
|
|
|
end.
|