common/cmconfig.h

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// -*- C++ -*-  vim:sts=4 filetype=cpp

// ***** BEGIN LICENSE BLOCK *****
// Version: MPL 1.1/GPL 2.0/LGPL 2.1
// 
// The contents of this file are subject to the Mozilla Public License
// Version 1.1 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://www.mozilla.org/MPL/
// 
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
// the License for the specific language governing rights and limitations
// under the License.
// 
// The Original Code is the consmgr network/serial-line monitoring package.
// 
// The Initial Developer of the Original Code is Chris P. Ross.
// Portions created by the Initial Developer are Copyright (C) 2000-2008
// the Initial Developer.  All Rights Reserved.
// 
// Contributor(s):
// 
// Alternatively, the contents of this file may be used under the terms of
// either the GNU General Public License Version 2 or later (the "GPL"), or
// the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
// in which case the provisions of the GPL or the LGPL are applicable instead
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// ***** END LICENSE BLOCK *****

#ifndef __CONFIG_H
#define __CONFIG_H

extern "C" {
#include <stdlib.h>
#include <pthread.h>
};

#include <string>
#include <fstream>
#include <map>
#include <vector>

#include <loki/SmartPtr.h>

using std::string;

#undef  CONFIGURATION_DEBUGGING

class Config : public std::map<string,string> {
  protected:
    Config(const string&);

  public:
    virtual ~Config();

    virtual void        load_entry(const string&) = 0;


  protected:
    string              filename;

  private:
    static const char*  keytexts[];
  protected:
    static const std::vector<std::string>       config_keys;
};

typedef Loki::SmartPtr<Config,
            Loki::RefCountedMTAdj<Loki::ObjectLevelLockable>::RefCountedMT>
        ConfigP;

class ConfigFactory {
  public:
    static Config       *config_object(const string&);

  private:
    template <class CFG_type>
    static Config       *new_config(const string&);
};

class ConfigException : public std::exception {
  public:
    ConfigException(const string&);
    ConfigException(const string&, const string&, const int);
    virtual ~ConfigException() throw()  {}

    /* This is part of std::exception */
    virtual const char *what(void) const throw();

    void                set_file(const string&);
    void                set_line(const int);

  protected:
    string              reason;
    string              file;
    int                 line;
};

class ConfigBadFile : public ConfigException {
  public:
    ConfigBadFile(const std::string &thefile, const int err=0)
        : ConfigException(""),saved_errno(err) { set_file(thefile); }

    virtual const char  *what(void) const throw();
  private:
    int                 saved_errno;
};

class ConfigParseException : public ConfigException {
  public:
    ConfigParseException(const int l, const string &r);
};

class ConfigUnfoundException : public ConfigException {
  public:
    ConfigUnfoundException(const string &node, const string &r = "");
    virtual ~ConfigUnfoundException() throw()   {};

    const string        &which(void)    { return(node); }

    virtual const char  *what(void) const throw();

  private:
    string              node;           
};


#endif  /* __CONFIG_H */

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