mosesdecoder/moses-chart-cmd/IOWrapper.h

// $Id$

/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (c) 2006 University of Edinburgh
All rights reserved.

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			may be used to endorse or promote products derived from this software
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// example file on how to use moses library

#pragma once

#include <fstream>
#include <vector>
#include <set>
#include "moses/TypeDef.h"
#include "moses/Sentence.h"
#include "moses/FactorTypeSet.h"
#include "moses/TranslationSystem.h"
#include "moses/ChartTrellisPathList.h"
#include "moses/OutputCollector.h"
#include "moses/ChartHypothesis.h"
#include "moses/ChartTrellisPath.h"
#include "search/applied.hh"

namespace Moses
{
class FactorCollection;
class ChartTrellisPathList;
}

namespace MosesChartCmd
{

/** Helper class that holds misc variables to write data out to command line.
 */
class IOWrapper
{
protected:
  typedef std::vector<std::pair<Moses::Word, Moses::WordsRange> > ApplicationContext;

  long m_translationId;

  const std::vector<Moses::FactorType>	&m_inputFactorOrder;
  const std::vector<Moses::FactorType>	&m_outputFactorOrder;
  const Moses::FactorMask								&m_inputFactorUsed;
  std::ostream 				        					*m_outputSearchGraphStream;
  std::ostream                          *m_detailedTranslationReportingStream;
  std::ostream                          *m_alignmentInfoStream;
  std::string		        								m_inputFilePath;
  std::istream					        				*m_inputStream;
  Moses::OutputCollector                *m_detailOutputCollector;
  Moses::OutputCollector                *m_nBestOutputCollector;
  Moses::OutputCollector                *m_searchGraphOutputCollector;
  Moses::OutputCollector                *m_singleBestOutputCollector;
  Moses::OutputCollector                *m_alignmentInfoCollector;

  typedef std::set< std::pair<size_t, size_t>  > Alignments;
  size_t OutputAlignmentNBest(Alignments &retAlign, const Moses::ChartTrellisNode &node, size_t startTarget);
  size_t OutputAlignment(Alignments &retAlign, const Moses::ChartHypothesis *hypo, size_t startTarget);
  void OutputAlignment(std::vector< std::set<size_t> > &retAlignmentsS2T, const Moses::AlignmentInfo &ai);
  void OutputTranslationOptions(std::ostream &out, ApplicationContext &applicationContext, const Moses::ChartHypothesis *hypo, const Moses::Sentence &sentence, long translationId);
  void ReconstructApplicationContext(const Moses::ChartHypothesis &hypo,
                                     const Moses::Sentence &sentence,
                                     ApplicationContext &context);
  void WriteApplicationContext(std::ostream &out,
                               const ApplicationContext &context);

public:
  IOWrapper(const std::vector<Moses::FactorType>	&inputFactorOrder
            , const std::vector<Moses::FactorType>	&outputFactorOrder
            , const Moses::FactorMask							&inputFactorUsed
            , size_t												nBestSize
            , const std::string							&nBestFilePath
            , const std::string							&inputFilePath="");
  ~IOWrapper();

  Moses::InputType* GetInput(Moses::InputType *inputType);
  void OutputBestHypo(const Moses::ChartHypothesis *hypo, long translationId);
  void OutputBestHypo(search::Applied applied, long translationId);
  void OutputBestHypo(const std::vector<const Moses::Factor*>&  mbrBestHypo, long translationId);
  void OutputBestNone(long translationId);
  void OutputNBestList(const Moses::ChartTrellisPathList &nBestList, const Moses::TranslationSystem* system, long translationId);
  void OutputNBestList(const std::vector<search::Applied> &nbest, const Moses::TranslationSystem &system, long translationId);
  void OutputDetailedTranslationReport(const Moses::ChartHypothesis *hypo, const Moses::Sentence &sentence, long translationId);
  void Backtrack(const Moses::ChartHypothesis *hypo);

  void ResetTranslationId();

  Moses::OutputCollector *GetSearchGraphOutputCollector() {
    return m_searchGraphOutputCollector;
  }

  void OutputAlignment(size_t translationId , const Moses::ChartHypothesis *hypo);

  static void FixPrecision(std::ostream &, size_t size=3);
};

}