Added avatar manager which will help when transfering and caching avatars. Using boost::filesystem. MD5 sum is used to identify avatars, different types of files are possible. Avatar cache (and the avatars provided) use for example <md5sum>.png as file names, so that no additional storage for the md5sum is required.

A cache directory with write permissions is required, however, as avatars are not cached in RAM.
2007-09-08 16:26:10 +00:00
parent 2f1e371e4f
commit db208190be
5 changed files with 197 additions and 2 deletions
@@ -0,0 +1,51 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Lothar May                                      *
+ *                                                                         *
+ *   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.             *
+ ***************************************************************************/
+/* A manager for avatar files, MD5sums and a cache. */
+
+#ifndef _AVATARMANAGER_H_
+#define _AVATARMANAGER_H_
+
+#include <core/crypthelper.h>
+#include <map>
+
+class AvatarManager
+{
+public:
+
+	AvatarManager();
+	~AvatarManager();
+
+	bool Init(const std::string &dataDir, const std::string &cacheDir);
+
+	bool GetHashForAvatar(const std::string &fileName, MD5Buf &md5buf);
+	bool GetAvatarFileName(const MD5Buf &md5buf, std::string &fileName) const;
+	bool StoreAvatarInCache(const MD5Buf &md5buf, const std::string &fileExtension, const unsigned char *data, unsigned size);
+
+protected:
+	typedef std::map<MD5Buf, std::string> AvatarMap;
+
+	void InternalReadDirectory(const std::string &dir);
+
+private:
+	AvatarMap			m_avatars;
+
+	std::string			m_cacheDir;
+};
+
+#endif