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Description
Submitted by: nandod (nandod)
Firebird on Windows can't open local database files through non-physical paths, such as those created by the ancient but still supported SUBST utility:
SUBST S: C:\DB
I have been putting filters in my applications that silently convert the path to a physical one (a simple matter of calling QueryDosDevice()), but it would be good if Firebird supported this out-of-the-box.
For completeness, here's the code I use (Delphi):
function MakePhysicalPath(const APath: string): string;
var
LDriveLetter: string;
LNewPath: string;
begin
LDriveLetter := ExtractFileDrive(APath);
SetLength\(LNewPath, MAX\_PATH \+ 1\);
SetLength\(LNewPath, QueryDosDevice\(PChar\(LDriveLetter\), PChar\(LNewPath\), Length\(LNewPath\)\)\);
if Pos\('\\??\\', LNewPath\) = 1 then
LNewPath := StrPas\(@LNewPath\[5\]\)
else
LNewPath := '';
if LNewPath = '' then
Result := APath
else
Result := LNewPath \+ Copy\(APath, 3, MaxInt\);
end;