mosesdecoder/moses-chart-cmd/IOWrapper.h

// $Id$

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

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
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			may be used to endorse or promote products derived from this software
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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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/ChartTrellisPathList.h"
#include "moses/OutputCollector.h"
#include "moses/ChartHypothesis.h"
#include "moses/ChartTrellisPath.h"
#include "search/applied.hh"

namespace Moses
{
class FactorCollection;
class ChartTrellisPathList;
class ScoreComponentCollection;
}

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);

  void OutputAllFeatureScores(const Moses::ScoreComponentCollection &features
                              , std::ostream &out);
  void OutputFeatureScores( std::ostream& out
                            , const Moses::ScoreComponentCollection &features
                            , const Moses::FeatureFunction *ff
                            , std::string &lastName );

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, long translationId);
  void OutputNBestList(const std::vector<search::Applied> &nbest, 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);
};

}