RooHelpers.cxx

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// Author: Stephan Hageboeck, CERN  01/2019
 
/*****************************************************************************
 * RooFit
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2019, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/
 
#include "RooHelpers.h"
 
namespace RooHelpers {
 
/// Tokenise the string by splitting at the characters in delims.
/// Consecutive delimiters are collapsed, so that no delimiters will appear in the
/// tokenised strings, and no emtpy strings are returned.
std::vector<std::string> tokenise(const std::string &str, const std::string &delims) {
  std::vector<std::string> tokens;
 
  auto beg = str.find_first_not_of(delims, 0);
  auto end = str.find_first_of(delims, beg);
  do {
    tokens.emplace_back(str.substr(beg, end-beg));
    beg = str.find_first_not_of(delims, end);
    end = str.find_first_of(delims, beg);
  } while (beg != std::string::npos);
 
  return tokens;
}
 
 
 
HijackMessageStream::HijackMessageStream(RooFit::MsgLevel level, RooFit::MsgTopic topics, const char* objectName) :
  std::ostringstream()
{
  auto& msg = RooMsgService::instance();
  _oldKillBelow = msg.globalKillBelow();
  msg.setGlobalKillBelow(level);
  for (int i = 0; i < msg.numStreams(); ++i) {
    _oldConf.push_back(msg.getStream(i));
    msg.getStream(i).removeTopic(topics);
    msg.setStreamStatus(i, true);
  }
 
  _thisStream = msg.addStream(level,
      RooFit::Topic(topics),
      RooFit::OutputStream(*this),
      objectName ? RooFit::ObjectName(objectName) : RooCmdArg());
}
 
HijackMessageStream::~HijackMessageStream() {
  auto& msg = RooMsgService::instance();
  msg.setGlobalKillBelow(_oldKillBelow);
  for (unsigned int i = 0; i < _oldConf.size(); ++i) {
    msg.getStream(i) = _oldConf[i];
  }
  msg.deleteStream(_thisStream);
}
 
 
 
 
}