BaseReader.hh 4.32 KB
Newer Older
Jan Möbius's avatar
Jan Möbius committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
/*===========================================================================*\
 *                                                                           *
 *                               OpenMesh                                    *
 *        Copyright (C) 2003 by Computer Graphics Group, RWTH Aachen         *
 *                           www.openmesh.org                                *
 *                                                                           *
 *---------------------------------------------------------------------------* 
 *                                                                           *
 *                                License                                    *
 *                                                                           *
 *  This library is free software; you can redistribute it and/or modify it  *
 *  under the terms of the GNU Lesser General Public License as published    *
 *  by the Free Software Foundation, version 2.1.                            *
 *                                                                           *
 *  This library is distributed in the hope that it will be useful, but      *
 *  WITHOUT ANY WARRANTY; without even the implied warranty of               *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
 *  Lesser General Public License for more details.                          *
 *                                                                           *
 *  You should have received a copy of the GNU Lesser General Public         *
 *  License along with this library; if not, write to the Free Software      *
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
 *                                                                           *
\*===========================================================================*/


//=============================================================================
//
//  Implements the baseclass for IOManager file access modules
//
//=============================================================================


#ifndef __BASEREADER_HH__
#define __BASEREADER_HH__


//=== INCLUDES ================================================================


// STD C++
#include <iostream>
#include <string>

// OpenMesh
#include <OpenMesh/Core/System/config.h>
#include <OpenMesh/Core/IO/Options.hh>
#include <OpenMesh/Core/IO/importer/BaseImporter.hh>
#include <OpenMesh/Core/Utils/SingletonT.hh>


//== NAMESPACES ===============================================================


namespace OpenMesh {
namespace IO {


//=== IMPLEMENTATION ==========================================================


/**
   Base class for reader modules.
   Reader modules access persistent data and pass them to the desired
   data structure by the means of a BaseImporter derivative.
   All reader modules must be derived from this class.
*/
class BaseReader
{
public:

72
73
74
  /// Destructor
  virtual ~BaseReader() {};

Jan Möbius's avatar
Jan Möbius committed
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
  /// Returns a brief description of the file type that can be parsed.
  virtual std::string get_description() const = 0;
  
  /** Returns a string with the accepted file extensions separated by a 
      whitespace and in small caps.
  */
  virtual std::string get_extensions() const = 0;

  /// Return magic bits used to determine file format
  virtual std::string get_magic() const { return std::string(""); }


  /** Reads a mesh given by a filename. Usually this method opens a stream
      and passes it to stream read method. Acceptance checks by filename
      extension can be placed here.

      Options can be passed via _opt. After execution _opt contains the Options
      that were available
  */
  virtual bool read(const std::string& _filename, 
		    BaseImporter& _bi,
                    Options& _opt) = 0;


  /// Returns true if reader can parse _filename (checks extension)
  virtual bool can_u_read(const std::string& _filename) const;


protected:

  // case insensitive search for _ext in _fname.
  bool check_extension(const std::string& _fname, 
		       const std::string& _ext) const;
};


//=============================================================================
} // namespace IO
} // namespace OpenMesh
//=============================================================================
#endif
//=============================================================================