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sglDataLoader.hpp

/*****************************************************************************
 * SGL: A Scene Graph Library
 *
 * Copyright (C) 1997-2001  Scott McMillan   All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************
 *     File: sglDataLoader.hpp
 *   Author: Scott McMillan
 *  Created: 12 February 2001
 *  Summary: base class for model and image loaders
 *****************************************************************************/

#ifndef SGL_DATA_LOADER
#define SGL_DATA_LOADER

#include <sgldb.h>
#include <sglLock.hpp>
#include <string>
#include <map>


class SGLDB_DLL_API sglDataLoader
{
public:
   virtual ~sglDataLoader() = 0;

   static void registerDLL(const string &extension, const string &dll_name);

   static void getDLL(const string &extension, string &dll_name);

   static bool loadDLL(const string &dll_name);

   static void splitString(const string &str,
                           vector<string> &vec,
                           const string &delimiters = string(";"));

   static void setDataPath(const vector<string> &path);

   static void addToDataPath(const string &path);

   static void getDataPath(vector<string> &path);

   static string extractFilenameFromPath(const string &filepath);

   static string extractDirectoryFromPath(const string &filepath);

   static string extractExtensionFromFilename(const string &filename);

   static bool compareExtension(const string &filename,
                                const string &extension);

   static bool searchDir(const string &directory,
                         const string &filename,
                         string &foundname);

   static bool checkFile(const string &filename);

   static bool findFile(const string &filepath,
                        const string *alternate_path,
                        string &foundname);

   static int strCaseCmp(const char *s1, const char *s2);

   static void toUpper(string &str);

   static void toLower(string &str);

protected:
   sglDataLoader();
   sglDataLoader(const sglDataLoader &);             // Not implemented.
   sglDataLoader &operator=(const sglDataLoader &);  // Not implemented.

public:
   static string              s_dir_separators;

private:
   static vector<string>      s_data_path;

   static map<string, string> s_extension_dll_map;
   static map<string, bool>   s_dll_loaded_map;
   static sglLock             s_lock;
};

#endif

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