ACE/apps/drwho/File_Manager.h

   1 /* -*- C++ -*- */
   2
   3 //=============================================================================
   4 /**
   5  *  @file    File_Manager.h
   6  *
   7  *  @author Douglas C. Schmidt
   8  */
   9 //=============================================================================
  10
  11
  12 #ifndef _FILE_MANAGER_H
  13 #define _FILE_MANAGER_H
  14
  15 #include "global.h"
  16 #include "ace/Singleton.h"
  17 #include "ace/Null_Mutex.h"
  18
  19 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  20 # pragma once
  21 #endif /* ACE_LACKS_PRAGMA_ONCE */
  22
  23 #include "ace/Mem_Map.h"
  24
  25 /**
  26  * @class File_Manager
  27  *
  28  * @brief This class provides a file ADT for our friends info.
  29  */
  30 class File_Manager
  31 {
  32 public:
  33   /// Constructor.
  34   File_Manager ();
  35
  36   int open_file (const char *filename);
  37   void get_login_and_real_name (const char *&login_name,
  38                                 const char *&real_name);
  39 private:
  40   int number_of_friends;
  41   int max_key_length;
  42
  43   char *buffer_ptr;
  44   char *current_ptr;
  45   int buffer_size;
  46
  47   int open_friends_file (const char *filename);
  48   int open_passwd_file ();
  49
  50   ACE_Mem_Map mmap_;
  51 };
  52
  53 // Make a Singleton.
  54 typedef ACE_Singleton <File_Manager, ACE_Null_Mutex> FILE_MANAGER;
  55
  56 #endif /* _FILE_MANAGER_H */