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storage.h (2465B)

      1 /* -*- Mode: c++; -*- */
      2 /*  --------------------------------------------------------------------
      3  *  Filename:
      4  *    storage.h
      5  *  
      6  *  Description:
      7  *    Declaration of the Binc::Storage class
      8  *
      9  *  Authors:
     10  *    Andreas Aardal Hanssen <andreas-binc@bincimap.org>
     11  *
     12  *  Bugs:
     13  *
     14  *  ChangeLog:
     15  *
     16  *  --------------------------------------------------------------------
     17  *  Copyright 2002-2005 Andreas Aardal Hanssen
     18  *
     19  *  This program is free software; you can redistribute it and/or modify
     20  *  it under the terms of the GNU General Public License as published by
     21  *  the Free Software Foundation; either version 2 of the License, or
     22  *  (at your option) any later version.
     23  *
     24  *  This program is distributed in the hope that it will be useful,
     25  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     26  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     27  *  GNU General Public License for more details.
     28  *
     29  *  You should have received a copy of the GNU General Public License
     30  *  along with this program; if not, write to the Free Software
     31  *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
     32  *  --------------------------------------------------------------------
     33  */
     34 #ifdef HAVE_CONFIG_H
     35 #include <config.h>
     36 #endif
     37 #ifndef STORAGEPARSER_H_INCLUDED
     38 #define STORAGEPARSER_H_INCLUDED
     39 #include <map>
     40 #include <string>
     41 
     42 #include <stdio.h>
     43 
     44 namespace Binc {
     45   class Storage {
     46   public:
     47     enum Mode {
     48       ReadOnly, WriteOnly
     49     };
     50 
     51     Storage(const std::string &fileName, Mode mode);
     52     ~Storage(void);
     53 
     54     bool ok(void) const;
     55 
     56     bool eof(void) const;
     57 
     58     bool get(std::string *section, std::string *key, 
     59 	     std::string *value);
     60 
     61     bool put(const std::string &section, const std::string &key,
     62 	     const std::string &value);
     63 
     64     bool commit(void);
     65 
     66     std::string getLastError(void) const;
     67 
     68   protected:
     69     void setLastError(const std::string &errorString) const;
     70 
     71     enum State {
     72       Searching, Section, Key, Value, 
     73       AliasKey, AliasColon, AliasValue, AliasEnd
     74     };
     75 
     76   private:
     77     FILE *fp;
     78     int fd;
     79     std::string fileName;
     80     State state;
     81 
     82     Mode mode;
     83 
     84     std::string lastError;
     85     std::string curSection;
     86     bool atEndOfFile;
     87     bool firstSection;
     88     std::map<std::string, std::string> aliases;
     89   };
     90 
     91   inline std::string Storage::getLastError(void) const
     92   {
     93     return lastError;
     94   }
     95 
     96   inline bool Storage::eof(void) const
     97   {
     98     return atEndOfFile;
     99   }
    100 }
    101 
    102 #endif