Hi, Christian What about: http://root.cern.ch/root/htmldoc/TFileSet.html One can iterate it using http://root.cern.ch/root/htmldoc/TDataSetIter.html the way you described. Valeri > Hi ROOT'ers, > > I'd like very much if it would be possible to iterate over a > TSystemDirectory. I imagine one could do > > > TSystemDirectory dir("some directory"); > TSystemFile* file = 0; > TIter next(dir); > > while ((file = (TSystemFile*)next())) { > // do something in this file > ... > } > > As an additional feature, one could have a constructor that uses > wildcard globing: > > TSystemDirectory dir("some directory", "*.root"); > > If using a TIter would not be feasable for TSystemDirectory, could one > at least have something like: > > UInt_t TSystemDirectory::GetEntries(); > TSystemFile* TSystemDirectory::At(UInt_t i); > > so that one may iterate through the list in a sligtly more clumbersome > way: > > Int_t n = dir.GetEntries(); > > for (Int_t i = 0; i < n; i++) { > file = dir.At(i); > // do something in this file > ... > } > > I realise ofcourse, that this would mean taking the internal list > initialisation out of the Browse method, and into something else like > say Initialise. The list can then be created "just-in-time": > > TSystemDirectory::Browse(TBrowser* b) { > // > if (!fListOfDirEntries) > Initialise(); > ... > } > > and so on. I don't see why you don't have "." and ".." in the > list. I'd imagine something like > > TSystemDirectory::Browse(TBrowser* b) { > // > . > TString *name = GetTitle(); > if (!name->CompareTo("..")) > *name = gSystem->DirName(gSystem->WorkingDirectory()); > ... > } > > would work. > > Anyway, just a few thoughts on this. I've this functionallity is in > ROOT somewhere and I've just overlooked it, then I'm sorry for > bothering you, and could someone please point out to me where - > thanks. > > Yours, > > Christian ----------------------------------------------------------- > Holm Christensen Phone: (+45) 35 35 96 91 > Sankt Hansgade 23, 1. th. Office: (+45) 353 25 305 > DK-2200 Copenhagen N Web: www.nbi.dk/~cholm > Denmark Email: cholm@nbi.dk >
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