OpenMesh
OpenMesh/Core/IO/reader/BaseReader.hh
00001 /*===========================================================================*\
00002  *                                                                           *
00003  *                               OpenMesh                                    *
00004  *      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen      *
00005  *                           www.openmesh.org                                *
00006  *                                                                           *
00007  *---------------------------------------------------------------------------* 
00008  *  This file is part of OpenMesh.                                           *
00009  *                                                                           *
00010  *  OpenMesh is free software: you can redistribute it and/or modify         * 
00011  *  it under the terms of the GNU Lesser General Public License as           *
00012  *  published by the Free Software Foundation, either version 3 of           *
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00014  *  following exceptions:                                                    *
00015  *                                                                           *
00016  *  If other files instantiate templates or use macros                       *
00017  *  or inline functions from this file, or you compile this file and         *
00018  *  link it with other files to produce an executable, this file does        *
00019  *  not by itself cause the resulting executable to be covered by the        *
00020  *  GNU Lesser General Public License. This exception does not however       *
00021  *  invalidate any other reasons why the executable file might be            *
00022  *  covered by the GNU Lesser General Public License.                        *
00023  *                                                                           *
00024  *  OpenMesh is distributed in the hope that it will be useful,              *
00025  *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
00026  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
00027  *  GNU Lesser General Public License for more details.                      *
00028  *                                                                           *
00029  *  You should have received a copy of the GNU LesserGeneral Public          *
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00032  *                                                                           *
00033 \*===========================================================================*/ 
00034 
00035 /*===========================================================================*\
00036  *                                                                           *             
00037  *   $Revision: 470 $                                                         *
00038  *   $Date: 2011-11-28 12:46:16 +0100 (Mo, 28 Nov 2011) $                   *
00039  *                                                                           *
00040 \*===========================================================================*/
00041 
00042 
00043 //=============================================================================
00044 //
00045 //  Implements the baseclass for IOManager file access modules
00046 //
00047 //=============================================================================
00048 
00049 
00050 #ifndef __BASEREADER_HH__
00051 #define __BASEREADER_HH__
00052 
00053 
00054 //=== INCLUDES ================================================================
00055 
00056 
00057 // STD C++
00058 #include <iostream>
00059 #include <string>
00060 #include <cctype>
00061 
00062 // OpenMesh
00063 #include <OpenMesh/Core/System/config.h>
00064 #include <OpenMesh/Core/IO/Options.hh>
00065 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
00066 #include <OpenMesh/Core/Utils/SingletonT.hh>
00067 
00068 
00069 //== NAMESPACES ===============================================================
00070 
00071 
00072 namespace OpenMesh {
00073 namespace IO {
00074 
00075 
00076 //=== IMPLEMENTATION ==========================================================
00077 
00078 
00085 class BaseReader
00086 {
00087 public:
00088 
00090   virtual ~BaseReader() {};
00091 
00093   virtual std::string get_description() const = 0;
00094   
00098   virtual std::string get_extensions() const = 0;
00099 
00101   virtual std::string get_magic() const { return std::string(""); }
00102 
00103 
00111   virtual bool read(const std::string& _filename, 
00112                     BaseImporter& _bi,
00113                     Options& _opt) = 0;
00114                 
00119   virtual bool read(std::istream& _is, 
00120                     BaseImporter& _bi,
00121                     Options& _opt) = 0;
00122 
00123 
00125   virtual bool can_u_read(const std::string& _filename) const;
00126 
00127 
00128 protected:
00129 
00130   // case insensitive search for _ext in _fname.
00131   bool check_extension(const std::string& _fname, 
00132                        const std::string& _ext) const;
00133 };
00134 
00135 
00143 static inline std::string &left_trim(std::string &_string) {
00144   _string.erase(_string.begin(), std::find_if(_string.begin(), _string.end(), std::not1(std::ptr_fun<int, int>(std::isspace))));
00145   return _string;
00146 }
00147 
00155 static inline std::string &right_trim(std::string &_string) {
00156   _string.erase(std::find_if(_string.rbegin(), _string.rend(), std::not1(std::ptr_fun<int, int>(std::isspace))).base(), _string.end());
00157   return _string;
00158 }
00159 
00167 static inline std::string &trim(std::string &_string) {
00168   return left_trim(right_trim(_string));
00169 }
00170 
00171 
00172 
00173 //=============================================================================
00174 } // namespace IO
00175 } // namespace OpenMesh
00176 //=============================================================================
00177 #endif
00178 //=============================================================================