Copy folder, subfolders and files recursively in Inno Setup Code section - inno-setup

Question

Is there any way to browse and recursively copy/move all files and subdirectories of a directory within the code section? (PrepareToInstall)
I need to ignore a specific directory, but using xcopy it ignores all directories /default/, for example, and I need to ignore a specific only.
The Files section is executed at a later time when needed.

Answer 1

To recursively copy a directory programmatically use:
procedure DirectoryCopy(SourcePath, DestPath: string);
var
FindRec: TFindRec;
SourceFilePath: string;
DestFilePath: string;
begin
if FindFirst(SourcePath + '\*', FindRec) then
begin
try
repeat
if (FindRec.Name <> '.') and (FindRec.Name <> '..') then
begin
SourceFilePath := SourcePath + '\' + FindRec.Name;
DestFilePath := DestPath + '\' + FindRec.Name;
if FindRec.Attributes and FILE_ATTRIBUTE_DIRECTORY = 0 then
begin
if FileCopy(SourceFilePath, DestFilePath, False) then
begin
Log(Format('Copied %s to %s', [SourceFilePath, DestFilePath]));
end
else
begin
Log(Format('Failed to copy %s to %s', [
SourceFilePath, DestFilePath]));
end;
end
else
begin
if DirExists(DestFilePath) or CreateDir(DestFilePath) then
begin
Log(Format('Created %s', [DestFilePath]));
DirectoryCopy(SourceFilePath, DestFilePath);
end
else
begin
Log(Format('Failed to create %s', [DestFilePath]));
end;
end;
end;
until not FindNext(FindRec);
finally
FindClose(FindRec);
end;
end
else
begin
Log(Format('Failed to list %s', [SourcePath]));
end;
end;
Add any filtering you need. See how the . and .. are filtered.
Note that the function does not create the root DestPath. If you do not know if it exists, add this to be beginning of the code:
if DirExists(DestPath) or CreateDir(DestPath) then
(then the similar code before the recursive DirectoryCopy call becomes redundant)
For an example of use, see my answers to questions:
Copying hidden files in Inno Setup
How to save a folder when user confirms uninstallation? (Inno Setup).