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Disk ARchive
2.5.2
Full featured and portable backup and archiving tool
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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 00031 00032 #ifndef ZAPETTE_HPP 00033 #define ZAPETTE_HPP 00034 00035 #include "../my_config.h" 00036 #include "infinint.hpp" 00037 #include "generic_file.hpp" 00038 #include "integers.hpp" 00039 #include "mem_ui.hpp" 00040 00041 namespace libdar 00042 { 00043 00044 00047 00049 00054 class zapette : public generic_file, public contextual, protected mem_ui 00055 { 00056 public: 00057 00059 00064 zapette(const user_interaction & dialog, generic_file *input, generic_file *output, bool by_the_end); 00065 ~zapette(); 00066 00067 // inherited methods from generic_file 00068 bool skippable(skippability direction, const infinint & amount) { return true; }; 00069 bool skip(const infinint &pos); 00070 bool skip_to_eof() { if(is_terminated()) throw SRC_BUG; position = file_size; return true; }; 00071 bool skip_relative(S_I x); 00072 infinint get_position() const { if(is_terminated()) throw SRC_BUG; return position; }; 00073 00074 // overwritten inherited methods from contextual 00075 void set_info_status(const std::string & s); 00076 bool is_an_old_start_end_archive() const; 00077 const label & get_data_name() const; 00078 00079 protected: 00080 void inherited_read_ahead(const infinint & amount) {}; // optimization will be done when zapette will use the messaging_encode/decode exchange format 00081 U_I inherited_read(char *a, U_I size); 00082 void inherited_write(const char *a, U_I size); 00083 void inherited_sync_write() {}; 00084 void inherited_flush_read() {}; 00085 void inherited_terminate(); 00086 00087 private: 00088 generic_file *in, *out; 00089 infinint position, file_size; 00090 char serial_counter; 00091 00093 00109 00110 void make_transfert(U_16 size, const infinint &offset, char *data, const std::string & info, S_I & lu, infinint & arg) const; 00111 }; 00112 00114 00118 class slave_zapette : public on_pool 00119 { 00120 public: 00121 00123 00127 slave_zapette(generic_file *input, generic_file *output, generic_file *data); 00128 ~slave_zapette(); 00129 00130 00132 00135 void action(); 00136 00137 private: 00138 generic_file *in; //< where to read orders from 00139 generic_file *out; //< where to send requested info or data to 00140 generic_file *src; //< where to read data from 00141 contextual *src_ctxt; //< same as src but seen as contextual 00142 }; 00143 00145 00146 } // end of namespace 00147 00148 #endif