Re: [ROOT] How to list files

From: Valeriy Onuchin (Valeri.Onoutchine@cern.ch)
Date: Tue Jul 29 2003 - 15:52:26 MEST


 Hi Satoru KAMEOKA,

TIter next(gROOT->GetListOfGlobals());
TGlobal *global;
TFile *file;
while ((global=(TGlobal*)next())) {
    TString type;
    type = global->GetTypeName();
    if (type=="TFile") {
        file = (TFile*)gInterpreter->Calc(global->GetName());
        printf("%s: %s\n", global->GetName(),file->GetName());
    }
}

HTH. Regards. Valeriy

> Hi, Valeriy,
> Thank you for reply.
> The way you taught surely shows file name and its contents, but not
> associated object "instance name". 
> 
> What I hope is, when some files are opened,
> root[] TFile f1("foo.root")
> root[] TFile f2("bar.root")
> root[] TFile f3("hoge.root")
> 
> some command can show the list as below.
> root[] some_command
> f1     "foo.root"
> f2     "bar.root"
> f3     "hoge.root"
> 
> Yes, I can understand that we can easily retrieve TFile object pointer
> from file name even if I've fogotten the instance names(f1, f2, f3).
> But I feel such command would be useful, because I sometimes attempt
> to use already connected TFile object by mistake and cause
> segmentation violation, like
> root[] TFile f("A_file.root")
> root[] TFile f("Another_file.root")
> 
> Anyway, thanks a lot.
> 
> Best regards,
> S.Kameoka
> 
> From: "Valeriy Onuchin" <Valeri.Onoutchine@cern.ch>
> Subject: Re: [ROOT] How to list files
> Date: Mon, 28 Jul 2003 17:07:52 +0200
> Message-ID: <028001c3551a$04c250a0$c1848a89@cern.ch>
> 
> >  Hi Satoru,
> > 
> > TIter next(gROOT->GetListOfFiles());
> > TObject *obj;
> > while ((obj=next())) obj->ls();
> > 
> > HTH. Regards. Valeriy
> > 
> > > Dear ROOT developers and users,
> > > 
> > > is there any way to list currently opened files?
> > > I found gROOT->GetListOfFiles()->Print() prints file names,
> > > but I want to know also associated TFile object instance names
> > > as "ldir //" command of PAW shows file name and LUN.
> > > 
> > > 
> > >    Best regards,
> > >    Satoru Kameoka
> > >    
> > > 
> > 
> 



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