OpenMesh
SR_binary.hh
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41 
42 
43 
44 
45 //=============================================================================
46 //
47 // Helper Functions for binary reading / writing
48 //
49 //=============================================================================
50 
51 #ifndef OPENMESH_SR_BINARY_HH
52 #define OPENMESH_SR_BINARY_HH
53 
54 
55 //== INCLUDES =================================================================
56 
57 #include <OpenMesh/Core/System/config.h>
58 // -------------------- STL
59 #include <typeinfo>
60 #include <stdexcept>
61 #include <sstream>
62 #include <numeric> // accumulate
63 // -------------------- OpenMesh
64 
65 
66 //== NAMESPACES ===============================================================
67 
68 namespace OpenMesh {
69 namespace IO {
70 
71 
72 //=============================================================================
73 
74 
75 //-----------------------------------------------------------------------------
76 
77  const static size_t UnknownSize(size_t(-1));
78 
79 
80 //-----------------------------------------------------------------------------
81 // struct binary, helper for storing/restoring
82 
83 #define X \
84  std::ostringstream msg; \
85  msg << "Type not supported: " << typeid(value_type).name(); \
86  throw std::logic_error(msg.str())
87 
101 template < typename T, typename = void > struct binary
102 {
103  typedef T value_type;
104 
106  static const bool is_streamable = false;
107 
109  static size_t size_of(void) { return UnknownSize; }
111  static size_t size_of(const value_type&) { return UnknownSize; }
112 
114  static std::string type_identifier (void) { return "UnknownType"; }
115 
117  static
118  size_t store( std::ostream& /* _os */,
119  const value_type& /* _v */,
120  bool /* _swap */ = false ,
121  bool /* store_size */ = true ) // for vectors
122  { X; return 0; }
123 
125  static
126  size_t restore( std::istream& /* _is */,
127  value_type& /* _v */,
128  bool /* _swap */ = false ,
129  bool /* store_size */ = true ) // for vectors
130  { X; return 0; }
131 };
132 
133 #undef X
134 
135 
136 //=============================================================================
137 } // namespace IO
138 } // namespace OpenMesh
139 //=============================================================================
140 #endif // OPENMESH_SR_RBO_HH defined
141 //=============================================================================
142 
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
The struct defines how to store and restore the type T.
Definition: SR_binary.hh:102
static size_t restore(std::istream &, value_type &, bool=false, bool=true)
Restore a value of T and return the number of bytes read.
Definition: SR_binary.hh:126
static const bool is_streamable
Can we store T? Set this to true in your specialization.
Definition: SR_binary.hh:106
static size_t store(std::ostream &, const value_type &, bool=false, bool=true)
Store a value of T and return the number of bytes written.
Definition: SR_binary.hh:118
static std::string type_identifier(void)
A string that identifies the type of T.
Definition: SR_binary.hh:114
static size_t size_of(void)
What's the size of T? If it depends on the actual value (e.g. for vectors) return UnknownSize.
Definition: SR_binary.hh:109
static size_t size_of(const value_type &)
What't the size of a specific value of type T.
Definition: SR_binary.hh:111

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