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{ $Id: fpdbgutil.pp 54031 2017-01-29 21:04:32Z joost $ }
{
---------------------------------------------------------------------------
fpdbgutil.pp - Native freepascal debugger - Utilities
---------------------------------------------------------------------------
This unit contains utility functions
---------------------------------------------------------------------------
@created(Mon Apr 10th WET 2006)
@lastmod($Date: 2017-01-29 22:04:32 +0100 (So, 29 Jan 2017) $)
@author(Marc Weustink <marc@@dommelstein.nl>)
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA. *
* *
***************************************************************************
}
unit FpDbgUtil;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils;
type
THexValueFormatFlag = (hvfSigned, hvfPrefixPositive, hvfIncludeHexchar);
THexValueFormatFlags = set of THexValueFormatFlag;
function CompareUtf8BothCase(AnUpper, AnLower, AnUnknown: PChar): Boolean;
function AlignPtr(Src: Pointer; Alignment: Byte): Pointer;
function HexValue(const AValue; ASize: Byte; AFlags: THexValueFormatFlags): String;
procedure Log(const AText: String; const AParams: array of const); overload;
procedure Log(const AText: String); overload;
function FormatAddress(const AAddress): String;
implementation
uses
LazLogger,
FpDbgClasses;
function CompareUtf8BothCase(AnUpper, AnLower, AnUnknown: PChar): Boolean;
var
p: PChar;
begin
Result := False;
while (AnUpper^ <> #0) and (AnUnknown^ <> #0) do begin
p := AnUnknown;
if (AnUpper^ = AnUnknown^) then begin
// maybe uppercase
inc(AnUpper);
inc(AnUnknown);
while ((byte(AnUpper^) and $C0) = $C0) and (AnUpper^ = AnUnknown^) do begin
inc(AnUpper);
inc(AnUnknown);
end;
if ((byte(AnUpper^) and $C0) <> $C0) then begin // equal to upper
inc(AnLower);
while ((byte(AnLower^) and $C0) = $C0) do
inc(AnLower);
Continue;
end;
end
else begin
// skip the first byte / continuation bytes are skipped if lower matches
inc(AnUpper);
inc(AnUnknown);
end;
// Not upper, try lower
if (AnLower^ = p^) then begin
inc(AnLower);
inc(p);
while ((byte(AnLower^) and $C0) = $C0) and (AnLower^ = p^) do begin
inc(AnLower);
inc(p);
end;
if ((byte(AnLower^) and $C0) <> $C0) then begin // equal to lower
// adjust upper and unknown to codepoint
while ((byte(AnUpper^) and $C0) = $C0) do
inc(AnUnknown);
while ((byte(AnUnknown^) and $C0) = $C0) do
inc(AnUnknown);
Continue;
end;
end;
Result := False;
exit;
end;
Result := AnUpper^ = AnUnknown^; // both #0
end;
function AlignPtr(Src: Pointer; Alignment: Byte): Pointer;
begin
Result := Pointer(((PtrUInt(Src) + Alignment - 1) and not PtrUInt(Alignment - 1)));
end;
function FormatAddress(const AAddress): String;
begin
Result := HexValue(AAddress, DBGPTRSIZE[GMode], [hvfIncludeHexchar]);
end;
function HexValue(const AValue; ASize: Byte; AFlags: THexValueFormatFlags): String;
var
i: Int64;
p: PByte;
begin
Result := '';
if ASize > 8
then begin
Result := 'HexValue: size to large';
Exit;
end;
if ASize = 0
then begin
Exit;
end;
p := @AValue;
if p[ASize - 1] < $80
then Exclude(AFlags, hvfSigned);
if hvfSigned in AFlags
then i := -1
else i := 0;
Move(AValue, i, ASize);
if hvfSigned in AFlags
then begin
i := not i + 1;
Result := '-';
end
else begin
if hvfPrefixPositive in AFlags
then Result := '+';
end;
if hvfIncludeHexchar in AFlags
then Result := Result + '$';
Result := Result + HexStr(i, ASize * 2);
end;
procedure Log(const AText: String; const AParams: array of const); overload;
begin
DebugLn(Format(AText, AParams));
end;
procedure Log(const AText: String); overload;
begin
DebugLn(AText);
end;
end.
|
