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dump/get_header.hh
1 // Copyright (C) 2010, 2011 EPITA Research and Development Laboratory
2 // (LRDE)
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26 
27 #ifndef MLN_IO_DUMP_GET_HEADER_HH
28 # define MLN_IO_DUMP_GET_HEADER_HH
29 
33 
34 # include <iostream>
35 # include <fstream>
36 
37 # include <mln/core/concept/image.hh>
38 # include <mln/core/routine/initialize.hh>
39 # include <mln/core/box_runstart_piter.hh>
40 # include <mln/core/pixel.hh>
41 # include <mln/data/memcpy_.hh>
42 # include <mln/util/array.hh>
43 
44 namespace mln
45 {
46 
47  namespace io
48  {
49 
50  namespace dump
51  {
52 
54  struct dump_header
55  {
56  unsigned dim;
57  std::string value_type;
59  };
60 
61 
63  dump_header get_header(const std::string& filename);
64 
65 
66 # ifndef MLN_INCLUDE_ONLY
67 
68 
69  inline
70  dump_header get_header(const std::string& filename)
71  {
72  trace::entering("mln::io::dump::get_header");
73 
74  dump_header header;
75 
76  std::ifstream file(filename.c_str());
77  if (! file)
78  {
79  std::cerr << "io::dump::get_header - Error: cannot open file '"
80  << filename << "'!"
81  << std::endl;
82  abort();
83  }
84 
85 
86  // Milena's file type ?
87  std::string file_type;
88  file >> file_type;
89  if (file_type != "milena/dump")
90  {
91  std::cerr << "io::dump::load - Error: invalid file type. '"
92  << filename
93  << "' is NOT a valid milena/dump file!"
94  << std::endl;
95  abort();
96  }
97 
98  // Dimension
99  file >> header.dim;
100 
101  // Size information - Skip it, useless.
102  header.size.resize(header.dim);
103  for (unsigned i = 0; i < header.dim; ++i)
104  file >> header.size[i];
105 
106  // Skipping endline.
107  char c;
108  file.get(c);
109 
110  // Value type name ?
111  // WARNING: value type name limited to 255 characters...
112  char value_type[255];
113  file.getline(value_type, 255);
114  header.value_type = value_type;
115 
116  trace::exiting("mln::io::dump::get_header");
117  return header;
118  }
119 
120 
121 # endif // ! MLN_INCLUDE_ONLY
122 
123  } // end of namespace mln::io::dump
124 
125  } // end of namespace mln::io
126 
127 } // end of namespace mln
128 
129 #endif // ! MLN_IO_DUMP_GET_HEADER_HH
130