VP1MD5Sum.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
 
//                                                            //
//  Header file for class VP1MD5Sum                           //
//                                                            //
//  Description: Calculates md5sum of file without reading    //
//               entire file into memory at once.             //
//                                                            //
//  Author: Thomas H. Kittelmann (Thomas.Kittelmann@cern.ch)  //
//  Initial version: May 2008                                 //
//                                                            //
 
#ifndef VP1MD5SUM_H
#define VP1MD5SUM_H
 
#include <QString>
#include <QByteArray>
 
class VP1MD5Sum {
public:
 
  static QByteArray sum( const QString& filename );
  //Returns empty array in case of errors
 
  static bool sumMatches( const QString& filename, const QByteArray& md5sum );
  static bool sumMatches( const QString& filename, const QString& md5sum );
  //Returns false in case of errors (missing or unreadable file/empty md5sum) or mismatch.
 
  //We always assume sums in byte arrays to be raw bits, and sums in
  //strings to be in hex format. Here are methods for
  //conversion/sanity checking:
  static QString sumToString(const QByteArray& );
  static QByteArray sumToByteArray(const QString& );
  static bool validMD5Sum(const QString&);//Does string have correct length and contain no invalid characters?
  static QString sumToStandardFormat(const QString&);//Removes spaces converts to lower case.
private:
  class Imp;
  VP1MD5Sum();
  ~VP1MD5Sum();
};
 
#endif