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dump/get_header.hh
1 // Copyright (C) 2010, 2011, 2012 EPITA Research and Development
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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 
66  dump_header get_header(const std::string& filename);
67 
68 
69 # ifndef MLN_INCLUDE_ONLY
70 
71 
72  inline
73  dump_header get_header(const std::string& filename)
74  {
75  mln_trace("mln::io::dump::get_header");
76 
77  dump_header header;
78 
79  std::ifstream file(filename.c_str());
80  if (! file)
81  {
82  std::cerr << "io::dump::get_header - Error: cannot open file '"
83  << filename << "'!"
84  << std::endl;
85  abort();
86  }
87 
88 
89  // Milena's file type ?
90  std::string file_type;
91  file >> file_type;
92  if (file_type != "milena/dump")
93  {
94  std::cerr << "io::dump::load - Error: invalid file type. '"
95  << filename
96  << "' is NOT a valid milena/dump file!"
97  << std::endl;
98  abort();
99  }
100 
101  // Dimension
102  file >> header.dim;
103 
104  // Size information - Skip it, useless.
105  header.size.resize(header.dim);
106  for (unsigned i = 0; i < header.dim; ++i)
107  file >> header.size[i];
108 
109  // Skipping endline.
110  char c;
111  file.get(c);
112 
113  // Value type name ?
114  // WARNING: value type name limited to 255 characters...
115  char value_type[255];
116  file.getline(value_type, 255);
117  header.value_type = value_type;
118 
119  return header;
120  }
121 
122 
123 # endif // ! MLN_INCLUDE_ONLY
124 
125  } // end of namespace mln::io::dump
126 
127  } // end of namespace mln::io
128 
129 } // end of namespace mln
130 
131 #endif // ! MLN_IO_DUMP_GET_HEADER_HH
132