* provided "as is" without express or implied warranty. *
**************************************************************************/
-/* $Id: */
-
-/* $Log:
- 29.05.2001 Yuri Kharlov:
- Everywhere reading the treese TTree->GetEvent(i)
- is replaced by reading the branches TBranch->GetEntry(0)
-*/
+/* $Id$ */
+
+/* History of cvs commits:
+ *
+ * $Log$
+ * Revision 1.18 2006/08/28 10:01:56 kharlov
+ * Effective C++ warnings fixed (Timur Pocheptsov)
+ *
+ * Revision 1.17 2006/08/25 16:00:53 kharlov
+ * Compliance with Effective C++AliPHOSHit.cxx
+ *
+ * Revision 1.16 2006/08/01 12:15:04 cvetan
+ * Adding a constructor from TFolder. Needed by AliReconstruction plugin scheme
+ *
+ * Revision 1.15 2005/07/12 20:07:35 hristov
+ * Changes needed to run simulation and reconstrruction in the same AliRoot session
+ *
+ * Revision 1.14 2005/05/28 14:19:04 schutz
+ * Compilation warnings fixed by T.P.
+ *
+ */
//_________________________________________________________________________
// A singleton. This class should be used in the analysis stage to get
#include "TFile.h"
#include "TTree.h"
#include "TROOT.h"
-#include "TObjString.h"
-#include "TFolder.h"
-#include "TParticle.h"
// --- Standard library ---
-#include <Riostream.h>
// --- AliRoot header files ---
-
-#include "AliRun.h"
-#include "AliConfig.h"
-#include "AliDataLoader.h"
+#include "AliObjectLoader.h"
+#include "AliLog.h"
#include "AliPHOSLoader.h"
#include "AliPHOS.h"
-#include "AliPHOSDigitizer.h"
-#include "AliPHOSSDigitizer.h"
-#include "AliPHOSClusterizer.h"
-#include "AliPHOSClusterizerv1.h"
-#include "AliPHOSTrackSegmentMaker.h"
-#include "AliPHOSTrackSegmentMakerv1.h"
-#include "AliPHOSTrackSegment.h"
-#include "AliPHOSPID.h"
-#include "AliPHOSPIDv1.h"
-#include "AliPHOSGeometry.h"
+#include "AliPHOSHit.h"
#include "AliPHOSCalibrationDB.h"
+#include "AliPHOSGetter.h"
ClassImp(AliPHOSLoader)
const TString AliPHOSLoader::fgkTrackSegmentsBranchName("PHOSTS");//Name for branch with TrackSegments
const TString AliPHOSLoader::fgkRecParticlesBranchName("PHOSRP");//Name for branch with Reconstructed Particles
//____________________________________________________________________________
-AliPHOSLoader::AliPHOSLoader()
- {
- fDebug = 0;
- }
+AliPHOSLoader::AliPHOSLoader() : fBranchTitle(), fcdb(0), fDebug(0)
+{
+ //def ctor
+}
//____________________________________________________________________________
-AliPHOSLoader::AliPHOSLoader(const Char_t *detname,const Char_t *eventfoldername):
- AliLoader(detname,eventfoldername)
+AliPHOSLoader::AliPHOSLoader(const Char_t *detname,const Char_t *eventfoldername) :
+ AliLoader(detname, eventfoldername),
+ fBranchTitle(), fcdb(0), fDebug(0)
{
- fDebug=0;
+ //ctor
+}
+//____________________________________________________________________________
+AliPHOSLoader::AliPHOSLoader(const Char_t *detname,TFolder *topfolder):
+ AliLoader(detname,topfolder),
+ fBranchTitle(), fcdb(0), fDebug(0)
+
+{
+ //ctor
+}
+//____________________________________________________________________________
+AliPHOSLoader::AliPHOSLoader(const AliPHOSLoader & obj):
+ AliLoader(obj),fBranchTitle(obj.GetBranchTitle()),fcdb(obj.CalibrationDB()),
+ fDebug(obj.GetDebug())
+{
+ // Copy constructor
}
//____________________________________________________________________________
Clean(fgkCpvRecPointsName);
Clean(fgkTracksName);
Clean(fgkRecParticlesName);
+ CleanFolders() ;
+ // set to 0x0 the objgetter in AliGetter ... weird isn it !
+ AliPHOSGetter * gime = AliPHOSGetter::Instance() ; // (AliLoader::GetRunLoader()->GetFileName()).Data()) ;
+ if (gime)
+ gime->Reset() ;
}
-//____________________________________________________________________________
+//____________________________________________________________________________
void AliPHOSLoader::CleanFolders()
{
CleanRecParticles();
AliLoader::CleanFolders();
}
-//____________________________________________________________________________
+//____________________________________________________________________________
Int_t AliPHOSLoader::SetEvent()
{
//Cleans loaded stuff and and sets Files and Directories
Int_t retval = AliLoader::SetEvent();
if (retval)
{
- Error("SetEvent","AliLoader::SetEvent returned error");
+ AliError("returned error");
return retval;
}
return 0;
}
-//____________________________________________________________________________
+//____________________________________________________________________________
Int_t AliPHOSLoader::GetEvent()
{
//Overloads GetEvent method called by AliRunLoader::GetEvent(Int_t) method
retval = AliLoader::GetEvent();
if (retval)
{
- Error("GetEvent","AliLoader::GetEvent returned error");
+ AliError("returned error");
return retval;
}
//Now, check if RecPart were loaded
return 0;
}
-//____________________________________________________________________________
-
//____________________________________________________________________________
const AliPHOS * AliPHOSLoader::PHOS()
//____________________________________________________________________________
const AliPHOSGeometry * AliPHOSLoader::PHOSGeometry()
{
+ // Return PHOS geometry
AliPHOSGeometry * rv = 0 ;
if (PHOS() )
rv = PHOS()->GetGeometry();
if (res)
{//oops, error
- Error("LoadHits","AliLoader::LoadHits returned error");
+ AliError("returned error");
return res;
}
//____________________________________________________________________________
Int_t AliPHOSLoader::LoadSDigits(Option_t* opt)
-{ //---------- SDigits -------------------------
+{
+ //---------- SDigits -------------------------
Int_t res;
//First call the AliLoader's method to send the TreeS to folder
res = AliLoader::LoadSDigits(opt);
if (res)
{//oops, error
- Error("PostSDigits","AliLoader::LoadSDigits returned error");
+ AliError("returned error");
return res;
}
return ReadSDigits();
//____________________________________________________________________________
Int_t AliPHOSLoader::LoadDigits(Option_t* opt)
{
+ //---------- Digits -------------------------
Int_t res;
//First call the AliLoader's method to send the TreeS to folder
res = AliLoader::LoadDigits(opt);
if (res)
{//oops, error
- Error("LoadDigits","AliLoader::LoadDigits returned error");
+ AliError("returned error");
return res;
}
return ReadDigits();
}
//____________________________________________________________________________
Int_t AliPHOSLoader::LoadRecPoints(Option_t* opt)
-{ // -------------- RecPoints -------------------------------------------
+{
+ // -------------- RecPoints -------------------------------------------
Int_t res;
//First call the AliLoader's method to send the TreeR to folder
res = AliLoader::LoadRecPoints(opt);
if (res)
{//oops, error
- Error("LoadRecPoints","AliLoader::LoadRecPoints returned error");
+ AliError("returned error");
return res;
}
TFolder * phosFolder = GetDetectorDataFolder();
if ( phosFolder == 0x0 )
{
- Error("PostDigits","Can not get detector data folder");
+ AliError("Can not get detector data folder");
return 1;
}
return ReadRecPoints();
Int_t AliPHOSLoader::LoadTracks(Option_t* opt)
{
//Loads Tracks: Open File, Reads Tree and posts, Read Data and Posts
- if (GetDebug()) Info("LoadTracks","opt = %s",opt);
+ AliDebug(1, Form("opt = %s",opt));
Int_t res;
res = AliLoader::LoadTracks(opt);
if (res)
{//oops, error
- Error("LoadTracks","AliLoader::LoadTracks returned error");
+ AliError("returned error");
return res;
}
return ReadTracks();
//____________________________________________________________________________
Int_t AliPHOSLoader::LoadRecParticles(Option_t* opt)
-{ // -------------- RecPoints -------------------------------------------
+{
+ // -------------- RecPoints -------------------------------------------
Int_t res;
//First call the AliLoader's method to send the TreeT to folder
res = AliLoader::LoadRecParticles(opt);
if (res)
{//oops, error
- Error("LoadRecParticles","AliLoader::LoadRecParticles returned error");
+ AliError("returned error");
return res;
}
return ReadRecParticles();
}
//____________________________________________________________________________
-
-Int_t AliPHOSLoader::PostHits()
+//PostHits etc. PostXXX must be const - not to hide virtual functions
+//from base class AliLoader, but they call non-constant functions ReadXXX
+//so I have to const_cast this pointer
+Int_t AliPHOSLoader::PostHits()const
{
+ // -------------- Hits -------------------------------------------
Int_t reval = AliLoader::PostHits();
if (reval)
{
- Error("PostHits","AliLoader:: returned error");
+ AliError("returned error");
return reval;
}
- return ReadHits();
+
+ return const_cast<AliPHOSLoader *>(this)->ReadHits();
}
//____________________________________________________________________________
-Int_t AliPHOSLoader::PostSDigits()
+Int_t AliPHOSLoader::PostSDigits()const
{
+ // -------------- SDigits -------------------------------------------
Int_t reval = AliLoader::PostSDigits();
if (reval)
{
- Error("PostSDigits","AliLoader::PostSDigits returned error");
+ AliError("returned error");
return reval;
}
- return ReadSDigits();
+ return const_cast<AliPHOSLoader *>(this)->ReadSDigits();
}
//____________________________________________________________________________
-Int_t AliPHOSLoader::PostDigits()
+Int_t AliPHOSLoader::PostDigits()const
{
+ // -------------- Digits -------------------------------------------
Int_t reval = AliLoader::PostDigits();
if (reval)
{
- Error("PostDigits","AliLoader::PostDigits returned error");
+ AliError("returned error");
return reval;
}
- return ReadDigits();
+ return const_cast<AliPHOSLoader *>(this)->ReadDigits();
}
//____________________________________________________________________________
-Int_t AliPHOSLoader::PostRecPoints()
+Int_t AliPHOSLoader::PostRecPoints()const
{
+ // -------------- RecPoints -------------------------------------------
Int_t reval = AliLoader::PostRecPoints();
if (reval)
{
- Error("PostRecPoints","AliLoader::PostRecPoints returned error");
+ AliError("returned error");
return reval;
}
- return ReadRecPoints();
+ return const_cast<AliPHOSLoader *>(this)->ReadRecPoints();
}
//____________________________________________________________________________
-Int_t AliPHOSLoader::PostRecParticles()
+Int_t AliPHOSLoader::PostRecParticles()const
{
+ // -------------- RecParticles -------------------------------------------
Int_t reval = AliLoader::PostRecParticles();
if (reval)
{
- Error("PostRecParticles","AliLoader::PostRecParticles returned error");
+ AliError("returned error");
return reval;
}
- return ReadRecParticles();
+ return const_cast<AliPHOSLoader *>(this)->ReadRecParticles();
}
//____________________________________________________________________________
-Int_t AliPHOSLoader::PostTracks()
+Int_t AliPHOSLoader::PostTracks()const
{
+ // -------------- Tracks -------------------------------------------
Int_t reval = AliLoader::PostTracks();
if (reval)
{
- Error("PostTracks","AliLoader::PostTracks returned error");
+ AliError("returned error");
return reval;
}
- return ReadTracks();
+ return const_cast<AliPHOSLoader *>(this)->ReadTracks();
}
//____________________________________________________________________________
if(treeh == 0)
{
- Error("ReadHits"," Cannot read TreeH from folder");
+ AliError("Cannot read TreeH from folder");
return 1;
}
TBranch * hitsbranch = treeh->GetBranch(fDetectorName);
if (hitsbranch == 0)
{
- Error("ReadHits"," Cannot find branch PHOS");
+ AliError("Cannot find branch PHOS");
return 1;
}
-
- if (GetDebug()) Info("ReadHits","Reading Hits");
+
+ AliDebug(1, "Reading Hits");
if (hitsbranch->GetEntries() > 1)
{
index++ ;
}
}
+ tempo->Delete();
delete tempo;
}
else
if(treeS==0)
{
//May happen if file is truncated or new in LoadSDigits
- //Error("ReadSDigits","There is no SDigit Tree");
+ //AliError("There is no SDigit Tree");
return 0;
}
TBranch * branch = treeS->GetBranch(fDetectorName);
if (branch == 0)
{//easy, maybe just a new tree
- //Error("ReadSDigits"," Cannot find branch PHOS");
+ //AliError("Cannot find branch PHOS");
return 0;
}
if(treeD==0)
{
//May happen if file is truncated or new in LoadSDigits
- //Error("ReadDigits","There is no Digit Tree");
+ //AliError("There is no Digit Tree");
return 0;
}
TBranch * branch = treeD->GetBranch(fDetectorName);
if (branch == 0)
{//easy, maybe just a new tree
- //Error("ReadDigits"," Cannot find branch ",fDetectorName.Data());
+ //AliError("Cannot find branch ",fDetectorName.Data());
return 0;
}
{
if (LoadHits())
{
- Error("Track","Can not load hits.");
+ AliError("Can not load hits.");
return;
}
}
hitsbranch->GetEntry(itrack);
}
-//____________________________________________________________________________
-void AliPHOSLoader::ReadTreeQA()
-{
- // Read the digit tree gAlice->TreeQA()
- // so far only PHOS knows about this Tree
-
- if(PHOS()->TreeQA()== 0){
- cerr << "ERROR: AliPHOSLoader::ReadTreeQA: can not read TreeQA " << endl ;
- return ;
- }
-
- TBranch * qabranch = PHOS()->TreeQA()->GetBranch("PHOS");
- if (!qabranch) {
- if (fDebug)
- cout << "WARNING: AliPHOSLoader::ReadTreeQA -> Cannot find QA Alarms for PHOS" << endl ;
- return ;
- }
-
-// if(!Alarms()) PostQA();
-
- qabranch->SetAddress(AlarmsRef()) ;
-
- qabranch->GetEntry(0) ;
-
-}
-
//____________________________________________________________________________
Int_t AliPHOSLoader::ReadRecPoints()
if (emcbranch == 0x0)
{
- Error("ReadRecPoints","Can not get branch with EMC Rec. Points named %s",fgkEmcRecPointsBranchName.Data());
+ AliError(Form("Can not get branch with EMC Rec. Points named %s",
+ fgkEmcRecPointsBranchName.Data()));
retval = 1;
}
else
TBranch * cpvbranch = treeR->GetBranch(fgkCpvRecPointsBranchName);
if (cpvbranch == 0x0)
{
- Error("ReadRecPoints","Can not get branch with CPV Rec. Points named %s",fgkCpvRecPointsBranchName.Data());
+ AliError(Form("Can not get branch with CPV Rec. Points named %s",
+ fgkCpvRecPointsBranchName.Data()));
retval = 2;
}
else
{
//May happen if file is truncated or new in LoadSDigits, or the file is in update mode,
//but tracking was not performed yet for a current event
- //Error("ReadTracks","There is no Tree with Tracks");
+ //AliError("There is no Tree with Tracks");
return 0;
}
TBranch * branch = treeT->GetBranch(fgkTrackSegmentsBranchName);
+// AliInfo(Form("Branch named %s is opened: 0x%z",
+// fgkTrackSegmentsBranchName.Data(),branch));
if (branch == 0)
{//easy, maybe just a new tree
- Error("ReadTracks"," Cannot find branch named %s",fgkTrackSegmentsBranchName.Data());
+ AliError(Form("Cannot find branch named %s",
+ fgkTrackSegmentsBranchName.Data()));
return 0;
}
//May happen if file is truncated or new in LoadSDigits,
//or the file is in update mode,
//but tracking was not performed yet for a current event
- // Error("ReadRecParticles","There is no Tree with Tracks and Reconstructed Particles");
+ // AliError("There is no Tree with Tracks and Reconstructed Particles");
return 0;
}
TBranch * branch = treeP->GetBranch(fgkRecParticlesBranchName);
if (branch == 0)
{//easy, maybe just a new tree
- Error("ReadRecParticles"," Cannot find branch %s",fgkRecParticlesBranchName.Data());
+ AliError(Form("Cannot find branch %s",
+ fgkRecParticlesBranchName.Data()));
return 0;
}
AliPHOSGeometry* AliPHOSLoader::GetPHOSGeometry()
{
-//returns PHOS geometry from gAlice
-//static Method used by some classes where it is not convienient to pass eventfoldername
- if (gAlice == 0x0)
- return 0x0;
- AliPHOS* phos=dynamic_cast<AliPHOS*>(gAlice->GetDetector("PHOS"));
- if (phos == 0x0)
- return 0x0;
- return phos->GetGeometry();
+ //returns PHOS geometry from gAlice
+ //static Method used by some classes where it is not convienient to pass eventfoldername
+ if (gAlice == 0x0)
+ return 0x0;
+
AliPHOS* phos=dynamic_cast<AliPHOS*>(gAlice->GetDetector("PHOS"));
+ if (phos == 0x0)
+ return 0x0;
+ return phos->GetGeometry();
}
/***************************************************************************************/
AliPHOSLoader* AliPHOSLoader::GetPHOSLoader(const char* eventfoldername)
{
+ // Return PHOS loader
AliRunLoader* rn = AliRunLoader::GetRunLoader(eventfoldername);
- if (rn == 0x0)
- {
- cerr<<"Error: <AliPHOSLoader::GetPHOSLoader>: "
- << "Can not find Run Loader in folder "<<eventfoldername<<endl;
- return 0x0;
- }
+ if (rn == 0x0) {
+ printf("Can not find Run Loader in folder %s", eventfoldername);
+ return 0x0 ;
+ }
return dynamic_cast<AliPHOSLoader*>(rn->GetLoader("PHOSLoader"));
}
/***************************************************************************************/
Bool_t AliPHOSLoader::BranchExists(const TString& recName)
- {
+{
+ // Check if a branch named redName exists
if (fBranchTitle.IsNull()) return kFALSE;
TString dataname, zername ;
TTree* tree;
TString branchName(branch->GetName() ) ;
TString branchTitle(branch->GetTitle() ) ;
if ( branchName.BeginsWith(dataname) && branchTitle.BeginsWith(fBranchTitle) ){
- Warning("BranchExists","branch %s with title %s ",dataname.Data(),fBranchTitle.Data());
+ AliWarning(Form("branch %s with title %s ",
+ dataname.Data(),fBranchTitle.Data()));
return kTRUE ;
}
if ( branchName.BeginsWith(zername) && branchTitle.BeginsWith(titleName) ){
- Warning("BranchExists","branch AliPHOS... with title %s ",branch->GetTitle());
+ AliWarning(Form("branch AliPHOS... with title %s ",
+ branch->GetTitle()));
return kTRUE ;
}
}
}
void AliPHOSLoader::SetBranchTitle(const TString& btitle)
- {
+{
+ // Set branch title
if (btitle.CompareTo(fBranchTitle) == 0) return;
fBranchTitle = btitle;
ReloadAll();
}
+
//____________________________________________________________________________
-
-void AliPHOSLoader::CleanHits()
+//Again, must be const not to hide virtual functions from AliLoader
+//but there are calls to non-const functions, so I have to const_cast this pointer
+void AliPHOSLoader::CleanHits()const
{
+ // Clean Hits array
AliLoader::CleanHits();
//Clear an array
- TClonesArray* hits = Hits();
+ TClonesArray* hits = const_cast<AliPHOSLoader *>(this)->Hits();
if (hits) hits->Clear();
}
//____________________________________________________________________________
-void AliPHOSLoader::CleanSDigits()
+void AliPHOSLoader::CleanSDigits()const
{
+ // Clean SDigits array
AliLoader::CleanSDigits();
- TClonesArray* sdigits = SDigits();
+ TClonesArray* sdigits = const_cast<AliPHOSLoader *>(this)->SDigits();
if (sdigits) sdigits->Clear();
}
//____________________________________________________________________________
-void AliPHOSLoader::CleanDigits()
+void AliPHOSLoader::CleanDigits()const
{
+ // Clean Digits array
AliLoader::CleanDigits();
- TClonesArray* digits = Digits();
+ TClonesArray* digits = const_cast<AliPHOSLoader *>(this)->Digits();
if (digits) digits->Clear();
}
//____________________________________________________________________________
-void AliPHOSLoader::CleanRecPoints()
+void AliPHOSLoader::CleanRecPoints()const
{
+ // Clean RecPoints array
AliLoader::CleanRecPoints();
- TObjArray* recpoints = EmcRecPoints();
+ TObjArray* recpoints = const_cast<AliPHOSLoader *>(this)->EmcRecPoints();
if (recpoints) recpoints->Clear();
- recpoints = CpvRecPoints();
+ recpoints = const_cast<AliPHOSLoader *>(this)->CpvRecPoints();
if (recpoints) recpoints->Clear();
}
//____________________________________________________________________________
-void AliPHOSLoader::CleanTracks()
+void AliPHOSLoader::CleanTracks()const
{
-//Cleans Tracks stuff
-
+ //Cleans Tracks stuff
AliLoader::CleanTracks();//tree
//and clear the array
- TClonesArray* tracks = TrackSegments();
+ TClonesArray* tracks = const_cast<AliPHOSLoader *>(this)->TrackSegments();
if (tracks) tracks->Clear();
}
void AliPHOSLoader::CleanRecParticles()
{
-
+ // Clean RecParticles array
TClonesArray *recpar = RecParticles();
if (recpar) recpar->Clear();
void AliPHOSLoader::ReadCalibrationDB(const char * database,const char * filename)
{
-
+ // Read calibration data base from file
if(fcdb && (strcmp(database,fcdb->GetTitle())==0))
return ;
if(!file)
file = TFile::Open(filename);
if(!file){
- Error ("ReadCalibrationDB", "Cannot open file %s", filename) ;
+ AliError(Form("Cannot open file %s", filename)) ;
return ;
}
if(fcdb)
fcdb->Delete() ;
fcdb = dynamic_cast<AliPHOSCalibrationDB *>(file->Get("AliPHOSCalibrationDB")) ;
if(!fcdb)
- Error ("ReadCalibrationDB", "No database %s in file %s", database, filename) ;
+ AliError(Form("No database %s in file %s", database, filename)) ;
}
//____________________________________________________________________________
//____________________________________________________________________________
void AliPHOSLoader::MakeHitsArray()
{
+ // Add Hits array to the data folder
if (Hits()) return;
TClonesArray* hits = new TClonesArray("AliPHOSHit",1000);
hits->SetName(fgkHitsName);
//____________________________________________________________________________
void AliPHOSLoader::MakeSDigitsArray()
{
+ // Add SDigits array to the data folder
if ( SDigits()) return;
TClonesArray* sdigits = new TClonesArray("AliPHOSDigit",1);
sdigits->SetName(fgkSDigitsName);
//____________________________________________________________________________
void AliPHOSLoader::MakeDigitsArray()
{
+ // Add Digits array to the data folder
if ( Digits()) return;
TClonesArray* digits = new TClonesArray("AliPHOSDigit",1);
digits->SetName(fgkDigitsName);
//____________________________________________________________________________
void AliPHOSLoader::MakeRecPointsArray()
{
+ // Add RecPoints array to the data folder
if ( EmcRecPoints() == 0x0)
{
- if (GetDebug()>9) Info("MakeRecPointsArray","Making array for EMC");
+ AliDebug(9, "Making array for EMC");
TObjArray* emc = new TObjArray(100) ;
emc->SetName(fgkEmcRecPointsName) ;
GetDetectorDataFolder()->Add(emc);
}
if ( CpvRecPoints() == 0x0)
- {
- if (GetDebug()>9) Info("MakeRecPointsArray","Making array for CPV");
- TObjArray* cpv = new TObjArray(100) ;
- cpv->SetName(fgkCpvRecPointsName);
- GetDetectorDataFolder()->Add(cpv);
+ {
+ AliDebug(9, "Making array for CPV");
+ TObjArray* cpv = new TObjArray(100) ;
+ cpv->SetName(fgkCpvRecPointsName);
+ GetDetectorDataFolder()->Add(cpv);
}
}
//____________________________________________________________________________
void AliPHOSLoader::MakeTrackSegmentsArray()
{
+ // Add TrackSegments array to the data folder
if ( TrackSegments()) return;
TClonesArray * ts = new TClonesArray("AliPHOSTrackSegment",100) ;
ts->SetName(fgkTracksName);
//____________________________________________________________________________
void AliPHOSLoader::MakeRecParticlesArray()
{
+ // Add RecParticles array to the data folder
if ( RecParticles()) return;
TClonesArray * rp = new TClonesArray("AliPHOSRecParticle",100) ;
rp->SetName(fgkRecParticlesName);
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff