On Tuesday 11 October 2016 15:48:15 Tony Whyman via Lazarus wrote:
> Please look at changes in TRUNK.
>
> > May be that not all is perfect, but you will see there direction ...
> >
> > -Laco.
>
> Which FPC version is this likely to be released in?
>
> On a quick review of the code, all seems good. Just one point:
> GetDataSize seems to acknowledge CP_UTF8 as the only multibyte character
> set. The Firebird character set GB18030 (Chinese characters) is
> multi-byte (see wikipedia) and has code page 54936. I believe PostgreSQL
> also supports it.
MSEgui uses below code in order to guess the Firebird character size:
"
SQL_TEXT,SQL_VARYING: begin
size:= metadata.getlength(fapi.status,i1);
datatype:= ftstring;
i2:= metadata.getcharset(fapi.status,i1);
if _type = SQL_TEXT then begin
fetchfunc:= @fetchtext;
if i2 = cs_binary then begin
if size = 16 then begin
datatype:= ftguid;
fetchfunc:= @fetchguid;
size:= 0;
end
else begin
datatype:= ftbytes;
end;
end;
end
else begin
if i2 = cs_binary then begin
datatype:= ftvarbytes;
fetchfunc:= @fetchvarbytes;
end
else begin
fetchfunc:= @fetchvarchar;
end;
end;
case i2 of
5,6,8,44,56,57,64: begin
i3:= 2;
end;
3: begin
i3:= 3;
end;
4,59: begin
i3:= 4;
end;
else begin
i3:= 1;
end;
end;
size:= size div i3;
end;
"
From
https://gitlab.com/mseide-msegui/mseide-msegui/blob/master/lib/common/db/msefbconnection.pas
Martin
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