1 /* magic_db.hh 2 * This file is part of Worker, a file manager for UNIX/X11. 3 * Copyright (C) 2008-2020 Ralf Hoffmann. 4 * You can contact me at: ralf@boomerangsworld.de 5 * or http://www.boomerangsworld.de/worker 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef MAGIC_DB_HH 23 #define MAGIC_DB_HH 24 25 #include "wdefines.h" 26 #include "aguix/mutex.h" 27 #include <string> 28 29 #ifdef HAVE_LIBMAGIC 30 # include <magic.h> 31 #endif 32 33 class MagicDB 34 { 35 public: 36 MagicDB(); 37 ~MagicDB(); 38 39 static MagicDB &getInstance(); 40 41 static const int NO_FLAG = 0x0; 42 static const int DECOMPRESS = 0x1; 43 static const int USE_MIME_TYPE = 0x2; 44 static const int USE_MIME_ENCODING = 0x4; 45 static const int USE_MIME = USE_MIME_TYPE | USE_MIME_ENCODING; 46 47 void init(); 48 void fini(); 49 std::string getInfo( const char *filename, int flags ); 50 std::string getInfo( const std::string &filename, int flags ); 51 std::string getInfo( const void *buffer, size_t len, int flags ); 52 private: 53 #ifdef HAVE_LIBMAGIC 54 magic_t m_magic_cookie; 55 #endif 56 MutEx m_lock; 57 bool m_magic_init; 58 59 static MagicDB *m_instance; 60 }; 61 62 #endif 63