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{* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*}
{*
* UTF-8
*}
type
TEncoderUTF8 = class(TEncoder)
public
function GetName(): AnsiString; override;
function Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean; override;
function Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean; override;
end;
function TEncoderUTF8.GetName(): AnsiString;
begin
Result := 'UTF8';
end;
function TEncoderUTF8.Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean;
var
I: integer;
StrPtr: PAnsiChar;
begin
// UTF8Decode() may crash with FPC < 2.2.2 if the input string is not UTF-8
// encoded. Newer versions do not crash but do not signal errors either.
// So let's implement this stuff again.
Result := true;
SetLength(OutStr, Length(InStr)+1);
I := 0;
StrPtr := PChar(InStr);
while (StrPtr^ <> #0) do
begin
if (not NextCharUTF8(StrPtr, OutStr[I])) then
Result := false;;
Inc(I);
end;
SetLength(OutStr, I+1);
OutStr[High(OutStr)] := 0;
end;
function TEncoderUTF8.Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean;
begin
OutStr := UCS4ToUTF8String(InStr);
Result := true;
end;
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