memo如何保存为utf8格式的文本文件
我知道notepad保存文件时是有编码选项的,memo如何做到呢。谢谢。
[解决办法]
var
S:UTF8String;
F:TextFile;
begin
S:=UTF8Encode(Memo1.Text);
AssignFile(F, 'C:\test.txt ');
Rewrite(F);
Write(F,#$EF+#$BB+#$BF); //UTF8标记
Write(F,S);
CloseFile(F);
end;
[解决办法]
//Unicode存、取
procedure TForm1.Button1Click(Sender: TObject);
var
S: string;
W: WideString;
begin
if Memo1.Text = ' ' then Exit; //存
with TMemoryStream.Create do try
S := #$FF#$FE;
Write(S[1], Length(S));
W := Memo1.Text;
Write(W[1], Length(W) * SizeOf(WideChar));
Position := 0;
SaveToFile( 'c:\temp\temp.txt ');
finally
Free;
end;
end;
procedure TForm1.Button2Click(Sender: TObject);
var
S: string;
W: WideString;
begin //取
if not FileExists( 'c:\temp\temp.txt ') then Exit;
with TMemoryStream.Create do try
LoadFromFile( 'c:\temp\temp.txt ');
if Size < 4 then Exit;
SetLength(S, 2);
Read(S[1], Length(S));
if Copy(S, 1, 2) <> #$FF#$FE then Exit;
SetLength(W, (Size - 2) div SizeOf(WideChar));
Read(W[1], Length(W) * SizeOf(WideChar));
Memo2.Text := W;
finally
Free;
end;
end;
//Utf8存、取
procedure TForm1.Button1Click(Sender: TObject);
var
S: string;
begin //存
with TMemoryStream.Create do try
S := #$EF#$BB#$BF;
Write(S[1], Length(S));
S := AnsiToUtf8(Memo1.Text);
Write(S[1], Length(S));
Position := 0;
SaveToFile( 'c:\temp\temp.txt ');
finally
Free;
end;
end;
procedure TForm1.Button2Click(Sender: TObject);var S: string;
begin //取
if not FileExists( 'c:\temp\temp.txt ') then Exit;
with TMemoryStream.Create do try
LoadFromFile( 'c:\temp\temp.txt ');
SetLength(S, Size);
Read(S[1], Length(S));
if Copy(S, 1, 3) <> #$EF#$BB#$BF then Exit;
Memo2.Text := Utf8ToAnsi(Copy(S, 4, MaxInt));
finally
Free;
end;
end;
