Method ExpandFolderMask

Libraries/unrar/scantree.cpp:78–123

For masks like dir1\dir2*\*.ext in non-recursive mode.

// For masks like dir1\dir2*\*.ext in non-recursive mode.
bool ScanTree::ExpandFolderMask()
{
  bool WildcardFound=false;
  uint SlashPos=0;
  for (int I=0;CurMask[I]!=0;I++)
  {
    if (CurMask[I]=='?' || CurMask[I]=='*')
      WildcardFound=true;
    if (WildcardFound && IsPathDiv(CurMask[I]))
    {
      // First path separator position after folder wildcard mask.
      // In case of dir1\dir2*\dir3\name.ext mask it may point not to file
      // name, so we cannot use PointToName() here.
      SlashPos=I; 
      break;
    }
  }

  wchar Mask[NM];
  wcsncpyz(Mask,CurMask,ASIZE(Mask));
  Mask[SlashPos]=0;

  // Prepare the list of all folders matching the wildcard mask.
  ExpandedFolderList.Reset();
  FindFile Find;
  Find.SetMask(Mask);
  FindData FD;
  while (Find.Next(&FD))
    if (FD.IsDir)
    {
      wcsncatz(FD.Name,CurMask+SlashPos,ASIZE(FD.Name));

      // Treat dir*\* or dir*\*.* as dir, so empty 'dir' is also matched
      // by such mask. Skipping empty dir with dir*\*.* confused some users.
      wchar *LastMask=PointToName(FD.Name);
      if (wcscmp(LastMask,L"*")==0 || wcscmp(LastMask,L"*.*")==0)
        RemoveNameFromPath(FD.Name);

      ExpandedFolderList.AddString(FD.Name);
    }
  if (ExpandedFolderList.ItemsCount()==0)
    return false;
  // Return the first matching folder name now.
  ExpandedFolderList.GetString(CurMask,ASIZE(CurMask));
  return true;
}


// For masks like dir1\dir2*\file.ext this function sets 'dir1' recursive mask