Title: How to check if a given folder is empty
Question: Ever needed to check if a folder is empty or not?
That's my way of doing. I think it's really fast, but not benchmarked yet.
Answer:
You'll need to add the "FileCtrl" and "SysUtils" units in your uses clausole.
uses
FileCtrl, SysUtils;
and then declaring this, the function you need.
function IsEmptyFolder(fld:string):boolean;
var
sr:tsearchrec;
r:integer;
begin
fld:=IncludeTrailingBackSlash(fld);
result:=false;
if(DirectoryExists(fld))then
begin
result:=true;
r:=findfirst((fld+'*.*'),faAnyFile,sr);
while((r=0)and(result))do
begin
// Revision 2:
// checks for system folders "." and ".." that always exists
// inside an empty folder.
if((SR.Attr and faDirectory)0)then
begin
if((sr.name'.')and(sr.name'..'))then
begin
result:=false;
end;
end else
begin
result:=false;
end;
r:=findnext(sr);
end;
// Revision 1:
// this prevents compiler by using the API defined in windows unit,
// that will raise a compiler error like this:
// [Error]:Incompatible types: 'Cardinal' and 'TSearchRec'
sysutils.findclose(sr);
end;
end;
The function only requires one parameter: the folder you want to check. It returns "True" if the folder is empty or "False" if the folder contains something.