Changed OpenMesh directory structure

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@106 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/IO/reader/BaseReader.hh

@@ -0,0 +1,116 @@
+/*===========================================================================*\
+ *                                                                           *
+ *                               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:
+
+  /// Destructor
+  virtual ~BaseReader() {};
+
+  /// 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
+//=============================================================================