OpenMesh
BaseReader.hh
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41 
42 
43 
44 
45 //=============================================================================
46 //
47 // Implements the baseclass for IOManager file access modules
48 //
49 //=============================================================================
50 
51 #pragma once
52 
53 //=== INCLUDES ================================================================
54 
55 
56 // STD C++
57 #include <iosfwd>
58 #include <string>
59 #include <cctype>
60 #include <functional>
61 #include <algorithm>
62 
63 // OpenMesh
64 #include <OpenMesh/Core/System/config.h>
65 #include <OpenMesh/Core/IO/Options.hh>
66 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
67 #include <OpenMesh/Core/Utils/SingletonT.hh>
68 
69 
70 //== NAMESPACES ===============================================================
71 
72 
73 namespace OpenMesh {
74 namespace IO {
75 
76 
77 //=== IMPLEMENTATION ==========================================================
78 
79 
86 class OPENMESHDLLEXPORT BaseReader
87 {
88 public:
89 
91  virtual ~BaseReader() {}
92 
94  virtual std::string get_description() const = 0;
95 
99  virtual std::string get_extensions() const = 0;
100 
102  virtual std::string get_magic() const { return std::string(""); }
103 
104 
112  virtual bool read(const std::string& _filename,
113  BaseImporter& _bi,
114  Options& _opt) = 0;
115 
122  virtual bool read(std::istream& _is,
123  BaseImporter& _bi,
124  Options& _opt) = 0;
125 
126 
132  virtual bool can_u_read(const std::string& _filename) const;
133 
134 
135 protected:
136 
137  // case insensitive search for _ext in _fname.
138  bool check_extension(const std::string& _fname,
139  const std::string& _ext) const;
140 };
141 
142 
150 static inline std::string &left_trim(std::string &_string) {
151 
152  // Find out if the compiler supports CXX11
153  #if ( __cplusplus >= 201103L || _MSVC_LANG >= 201103L )
154  // as with CXX11 we can use lambda expressions
155  _string.erase(_string.begin(), std::find_if(_string.begin(), _string.end(), [](int i)->int { return ! std::isspace(i); }));
156  #else
157  // we do what we did before
158  _string.erase(_string.begin(), std::find_if(_string.begin(), _string.end(), std::not1(std::ptr_fun<int, int>(std::isspace))));
159  #endif
160 
161  return _string;
162 }
163 
171 static inline std::string &right_trim(std::string &_string) {
172 
173  // Find out if the compiler supports CXX11
174  #if ( __cplusplus >= 201103L || _MSVC_LANG >= 201103L )
175  // as with CXX11 we can use lambda expressions
176  _string.erase(std::find_if(_string.rbegin(), _string.rend(), [](int i)->int { return ! std::isspace(i); } ).base(), _string.end());
177  #else
178  // we do what we did before
179  _string.erase(std::find_if(_string.rbegin(), _string.rend(), std::not1(std::ptr_fun<int, int>(std::isspace))).base(), _string.end());
180  #endif
181 
182 
183 
184  return _string;
185 }
186 
194 static inline std::string &trim(std::string &_string) {
195  return left_trim(right_trim(_string));
196 }
197 
198 
199 
200 //=============================================================================
201 } // namespace IO
202 } // namespace OpenMesh
203 //=============================================================================
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
Base class for importer modules.
Definition: BaseImporter.hh:84
Set options for reader/writer modules.
Definition: Options.hh:91
Base class for reader modules.
Definition: BaseReader.hh:87
virtual bool read(std::istream &_is, BaseImporter &_bi, Options &_opt)=0
Reads a mesh given by a std::stream.
virtual std::string get_description() const =0
Returns a brief description of the file type that can be parsed.
virtual std::string get_extensions() const =0
Returns a string with the accepted file extensions separated by a whitespace and in small caps.
virtual std::string get_magic() const
Return magic bits used to determine file format.
Definition: BaseReader.hh:102
virtual bool read(const std::string &_filename, BaseImporter &_bi, Options &_opt)=0
Reads a mesh given by a filename.
virtual ~BaseReader()
Destructor.
Definition: BaseReader.hh:91

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