* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
///////////////////////////////////////////////////////////////////////////////
-//
-// This is a class for reading a raw data file and providing
-// information about digits
-//
+///
+/// This is a class for reading raw data files.
+///
+/// The files of one event are expected to be in one directory. The name
+/// of the directory is "raw" + the event number. Each file contains
+/// the raw data (with data header) of one DDL. The convention for the
+/// file names is "DET_#DDL.ddl". "DET" is the name of the detector and
+/// "#DDL" is the unique equipment ID.
+///
+/// The constructor of AliRawReaderFile takes the event number or the
+/// directory name as argument.
+///
///////////////////////////////////////////////////////////////////////////////
#include "AliRawReaderFile.h"
+#include <TSystem.h>
ClassImp(AliRawReaderFile)
-AliRawReaderFile::AliRawReaderFile(const char* fileName, Bool_t addNumber)
+AliRawReaderFile::AliRawReaderFile(Int_t eventNumber) :
+ fEventIndex(eventNumber),
+ fDirName("."),
+ fDirectory(NULL),
+ fStream(NULL),
+ fEquipmentId(-1),
+ fBuffer(NULL),
+ fBufferSize(0)
{
-// create an object to read digits from the given input file(s)
-// if addNumber is true, a number starting at 1 is appended to the file name
+// create an object to read digits from the given event
+// in the current directory
- fFileName = fileName;
- if (!addNumber) {
- fFileNumber = -1;
-#ifndef __DECCXX
- fStream = new fstream(fileName, ios::binary|ios::in);
-#else
- fStream = new fstream(fileName, ios::in);
-#endif
- } else {
- fFileNumber = 0;
- fStream = NULL;
- OpenNextFile();
- }
- fMiniHeader = new AliMiniHeader;
- fBuffer = NULL;
- fBufferSize = 0;
+ fDirectory = OpenDirectory();
+ OpenNextFile();
+ fHeader = new AliRawDataHeader;
+}
+
+AliRawReaderFile::AliRawReaderFile(const char* dirName, Int_t eventNumber) :
+ fEventIndex(eventNumber),
+ fDirName(dirName),
+ fDirectory(NULL),
+ fStream(NULL),
+ fEquipmentId(-1),
+ fBuffer(NULL),
+ fBufferSize(0)
+{
+// create an object to read digits from the given directory
+
+ fDirectory = OpenDirectory();
+ OpenNextFile();
+ fHeader = new AliRawDataHeader;
}
AliRawReaderFile::~AliRawReaderFile()
{
// close the input file
+ if (fDirectory) gSystem->FreeDirectory(fDirectory);
if (fStream) {
#if defined(__HP_aCC) || defined(__DECCXX)
if (fStream->rdbuf()->is_open()) fStream->close();
#endif
delete fStream;
}
- delete fMiniHeader;
+ delete fHeader;
if (fBuffer) delete[] fBuffer;
}
+void AliRawReaderFile::RequireHeader(Bool_t required)
+{
+ // Reading of raw data in case of missing
+ // raw data header is not implemented for
+ // this class
+ if (!required)
+ Fatal("AliRawReaderFile","Reading of raw data without raw data header is not implemented !");
+
+ AliRawReader::RequireHeader(required);
+}
+
+TString AliRawReaderFile::GetDirName() const
+{
+// return the current directory name
+
+ TString dirName(fDirName);
+ if (fEventIndex >= 0) {
+ dirName += "/raw";
+ dirName += fEventIndex;
+ }
+ return dirName;
+}
+
+void* AliRawReaderFile::OpenDirectory()
+{
+// open and return the directory
+
+ TString dirName = GetDirName();
+ void* directory = gSystem->OpenDirectory(dirName);
+ if (!directory) {
+ Error("OpenDirectory", "could not open directory %s", dirName.Data());
+ }
+ return directory;
+}
Bool_t AliRawReaderFile::OpenNextFile()
{
+// open the next file
+// returns kFALSE if the current file is the last one
+
if (fStream) {
#if defined(__HP_aCC) || defined(__DECCXX)
if (fStream->rdbuf()->is_open()) fStream->close();
#endif
delete fStream;
fStream = NULL;
+ fEquipmentId = -1;
}
- if (fFileNumber < 0) return kFALSE;
- fFileNumber++;
- char fileName[256];
- sprintf(fileName, "%s%d", fFileName.Data(), fFileNumber);
+ if (!fDirectory) return kFALSE;
+ TString entry;
+ while (entry = gSystem->GetDirEntry(fDirectory)) {
+ if (entry.IsNull()) return kFALSE;
+ if (!entry.EndsWith(".ddl")) continue;
+ char* fileName = gSystem->ConcatFileName(GetDirName(), entry);
#ifndef __DECCXX
- fStream = new fstream(fileName, ios::binary|ios::in);
+ fStream = new fstream(fileName, ios::binary|ios::in);
#else
- fStream = new fstream(fileName, ios::in);
+ fStream = new fstream(fileName, ios::in);
#endif
+ break;
+ }
+
+ if (!fStream) return kFALSE;
+ entry.Remove(0, entry.Last('_')+1);
+ entry.Remove(entry.Length()-4);
+ fEquipmentId = atoi(entry.Data());
#if defined(__HP_aCC) || defined(__DECCXX)
return (fStream->rdbuf()->is_open());
#else
}
-Bool_t AliRawReaderFile::ReadMiniHeader()
+Bool_t AliRawReaderFile::ReadHeader()
{
-// read a mini header at the current stream position
+// read a data header at the current stream position
// returns kFALSE if the mini header could not be read
if (!fStream) return kFALSE;
do {
if (fCount > 0) fStream->seekg(Int_t(fStream->tellg()) + fCount);
- while (!fStream->read((char*) fMiniHeader, sizeof(AliMiniHeader))) {
+ while (!fStream->read((char*) fHeader, sizeof(AliRawDataHeader))) {
if (!OpenNextFile()) return kFALSE;
}
- CheckMiniHeader();
- fCount = fMiniHeader->fSize;
+ if (fHeader->fSize != 0xFFFFFFFF) {
+ fCount = fHeader->fSize - sizeof(AliRawDataHeader);
+ } else {
+ UInt_t currentPos = fStream->tellg();
+ fStream->seekg(0, ios::end);
+ fCount = UInt_t(fStream->tellg()) - currentPos;
+ fStream->seekg(currentPos);
+ }
} while (!IsSelected());
return kTRUE;
}
// returns kFALSE if the data could not be read
while (fCount == 0) {
- if (!ReadMiniHeader()) return kFALSE;
+ if (!ReadHeader()) return kFALSE;
}
if (fBufferSize < fCount) {
if (fBuffer) delete[] fBuffer;
Bool_t AliRawReaderFile::Reset()
{
-// reset the current stream position to the beginning of the file
+// reset the current stream position to the first DDL file of the curevent
+
+ void* directory = OpenDirectory();
+ if (!directory) return kFALSE;
- if ((fFileNumber > 0) && fStream) {
+ if (fStream) {
#if defined(__HP_aCC) || defined(__DECCXX)
if (fStream->rdbuf()->is_open()) fStream->close();
#else
#endif
delete fStream;
fStream = NULL;
- fFileNumber = 0;
}
- if (!fStream) {
- if (fFileNumber < 0) {
-#ifndef __DECCXX
- fStream = new fstream(fFileName, ios::binary|ios::in);
-#else
- fStream = new fstream(fFileName, ios::in);
-#endif
- } else {
- if (!OpenNextFile()) return kFALSE;
- }
- }
+ if (fDirectory) gSystem->FreeDirectory(fDirectory);
+ fDirectory = directory;
- if (!fStream || !fStream->rdbuf()->is_open()) return kFALSE;
- fStream->seekg(0);
+ OpenNextFile();
fCount = 0;
return kTRUE;
}
+Bool_t AliRawReaderFile::NextEvent()
+{
+// go to the next event directory
+
+ if (fEventIndex < -1) return kFALSE;
+
+ do {
+ TString dirName = fDirName + "/raw";
+ dirName += (fEventIndex + 1);
+ void* directory = gSystem->OpenDirectory(dirName);
+ if (!directory) return kFALSE;
+ gSystem->FreeDirectory(directory);
+
+ fEventIndex++;
+ Reset();
+ } while (!IsEventSelected());
+
+ fEventNumber++;
+
+ return kTRUE;
+}
+
+Bool_t AliRawReaderFile::RewindEvents()
+{
+// reset the event counter
+
+ if (fEventIndex >= 0) fEventIndex = -1;
+ fEventNumber = -1;
+ return Reset();
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff