extractor/data_array.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

#ifndef _DATA_ARRAY_H_
#define _DATA_ARRAY_H_

#include <string>
#include <tr1/unordered_map>
#include <vector>

#include <boost/filesystem.hpp>

namespace fs = boost::filesystem;
using namespace std;
using namespace tr1;

enum Side {
  SOURCE,
  TARGET
};

class DataArray {
 public:
  static int END_OF_FILE;
  static int END_OF_LINE;
  static string END_OF_FILE_STR;
  static string END_OF_LINE_STR;

  DataArray(const string& filename);

  DataArray(const string& filename, const Side& side);

  virtual ~DataArray();

  virtual const vector<int>& GetData() const;

  virtual int AtIndex(int index) const;

  virtual int GetSize() const;

  virtual int GetVocabularySize() const;

  virtual bool HasWord(const string& word) const;

  virtual int GetWordId(const string& word) const;

  virtual string GetWord(int word_id) const;

  int GetNumSentences() const;

  int GetSentenceStart(int position) const;

  virtual int GetSentenceId(int position) const;

  void WriteBinary(const fs::path& filepath) const;

  void WriteBinary(FILE* file) const;

 protected:
  DataArray();

 private:
  void InitializeDataArray();
  void CreateDataArray(const vector<string>& lines);

  unordered_map<string, int> word2id;
  vector<string> id2word;
  vector<int> data;
  // TODO(pauldb): We only need sentence_id for the source language. Maybe we
  // can save some memory here.
  vector<int> sentence_id;
  vector<int> sentence_start;
};

#endif