Disk ARchive
2.4.5
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00001 /*********************************************************************/ 00002 // dar - disk archive - a backup/restoration program 00003 // Copyright (C) 2002-2052 Denis Corbin 00004 // 00005 // This program is free software; you can redistribute it and/or 00006 // modify it under the terms of the GNU General Public License 00007 // as published by the Free Software Foundation; either version 2 00008 // of the License, or (at your option) any later version. 00009 // 00010 // This program is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with this program; if not, write to the Free Software 00017 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00018 // 00019 // to contact the author : http://dar.linux.free.fr/email.html 00020 /*********************************************************************/ 00021 // $Id$ 00022 // 00023 /*********************************************************************/ 00024 00028 00029 #ifndef TLV_HPP 00030 #define TLV_HPP 00031 00032 #include "memory_file.hpp" 00033 #include "storage.hpp" 00034 00035 namespace libdar 00036 { 00039 00041 00044 class tlv 00045 { 00046 public: 00047 00048 // constructors & Co. 00049 00050 tlv() { type = 0; value = NULL; }; 00051 tlv(generic_file & f) { init(f); }; 00052 tlv(const tlv & ref) { copy_from(ref); }; 00053 ~tlv() { detruit(); }; 00054 00055 const tlv & operator = (const tlv & ref) { detruit(); copy_from(ref); return *this; }; 00056 00057 // methods (read / write tlv datastructure to file) 00058 00059 void read(generic_file & f); //< same as the constructor but on an existing object 00060 void write(generic_file & f) const; //< dumps the tlv contents to file 00061 00062 // methods to fill the tlv object 00063 00064 U_16 get_type() const { return type; }; //< get the TLV type 00065 void set_type(U_16 val) { type = val; }; //< set the TLV type 00066 void set_contents(const memory_file & contents); //< the generic_file object is provided to dump data to the tlv object 00067 void get_contents(memory_file & contents) const; //< the generic_file object is provided to read data from the tlv object 00068 00069 #ifdef LIBDAR_SPECIAL_ALLOC 00070 USE_SPECIAL_ALLOC(tlv); 00071 #endif 00072 private: 00073 U_16 type; 00074 storage *value; 00075 00076 void init(generic_file & f); 00077 void copy_from(const tlv & ref); 00078 void detruit() { if(value != NULL) { delete value; value = NULL; } }; 00079 }; 00080 00082 00083 } // end of namespace 00084 00085 #endif 00086 00087