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+/** \file MemFile.h
+ ** \date 2005-04-25
+ ** \author grymse@alhem.net
+**/
+/*
+Copyright (C) 2004-2007 Anders Hedstrom
+
+This library is made available under the terms of the GNU GPL.
+
+If you would like to use this library in a closed-source application,
+a separate license agreement is available. For information about
+the closed-source license agreement for the C++ sockets library,
+please visit http://www.alhem.net/Sockets/license.html and/or
+email license@alhem.net.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+#ifndef _SOCKETS_MemFile_H
+#define _SOCKETS_MemFile_H
+
+#include "sockets-config.h"
+#include <map>
+#include "IFile.h"
+
+#define BLOCKSIZE 32768
+
+#ifdef SOCKETS_NAMESPACE
+namespace SOCKETS_NAMESPACE {
+#endif
+
+
+/** Implements a memory file.
+ \ingroup file */
+class MemFile : public IFile
+{
+public:
+ /** File block structure.
+ \ingroup file */
+ struct block_t {
+ block_t() : next(NULL) {}
+ struct block_t *next;
+ char data[BLOCKSIZE];
+ };
+public:
+ MemFile();
+ MemFile(const std::string& path);
+ ~MemFile();
+
+ bool fopen(const std::string& path, const std::string& mode);
+ void fclose();
+
+ size_t fread(char *ptr, size_t size, size_t nmemb) const;
+ size_t fwrite(const char *ptr, size_t size, size_t nmemb);
+
+ char *fgets(char *s, int size) const;
+ void fprintf(const char *format, ...);
+
+ off_t size() const;
+ bool eof() const;
+
+ void reset_read() const;
+ void reset_write();
+
+private:
+ MemFile(const MemFile& ) {} // copy constructor
+ MemFile& operator=(const MemFile& ) { return *this; } // assignment operator
+
+static std::map<std::string,block_t *> m_files;
+ std::string m_path;
+ bool m_temporary;
+ block_t *m_base;
+ mutable block_t *m_current_read;
+ block_t *m_current_write;
+ int m_current_write_nr;
+ mutable size_t m_read_ptr;
+ size_t m_write_ptr;
+ mutable bool m_b_read_caused_eof;
+};
+
+
+
+
+#ifdef SOCKETS_NAMESPACE
+}
+#endif
+
+#endif // _SOCKETS_MemFile_H
+