resources/file.h

   1 /* Quarn OS
   2  *
   3  * File class
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   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 along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #ifndef _FILE_H_
  24 #define _FILE_H_
  25
  26 #include "libs/date.h"
  27 #include "libs/string.h"
  28 #include "libs/pointer.h"
  29 #include "libs/list.h"
  30 #include "libs/buffer.h"
  31 #include "manes/cds/component.h"
  32
  33 #include "prvl.h"
  34
  35 namespace resources {
  36         class fs;
  37         class file : public manes::cds::component {
  38         public:
  39                 typedef enum {
  40                         attr_hidden = 1,
  41                         attr_system = 2
  42                 } attrib;
  43                 typedef struct {
  44                         date creation_d;
  45                         time creation_t;
  46
  47                         prvl access;
  48                         attrib attributes;
  49                         bool directory;
  50
  51                         int size;
  52                 } file_meta;
  53
  54         protected:
  55                 p<fs> filesystem;
  56
  57                 string file_name;
  58
  59                 file_meta metadata;
  60
  61                 /* Data loaded on demand */
  62                 mutable p<buffer> buf;
  63
  64                 list<p<file> > children;
  65         public:
  66                 void set(string, p<fs>);
  67
  68                 string get_name() const { return file_name; }
  69                 unsigned int get_size() const { return metadata.size; }
  70                 buffer get_buffer();
  71
  72                 void seek(int);
  73                 void read(buffer &);
  74                 void write(const buffer &);
  75
  76                 operator const string();
  77
  78                 void save() const;
  79                 void remove();
  80                 p<file> copy(string) const;
  81
  82                 static void register_type();
  83         };
  84 }
  85
  86 #endif