OpenMesh
SR_binary.hh
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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
68namespace OpenMesh {
69namespace 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
101template < 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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