BESContextManager.cc

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// BESContextManager.cc

// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.

// Copyright (c) 2004-2009 University Corporation for Atmospheric Research
// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
// Please read the full copyright statement in the file COPYRIGHT_UCAR.
//
// Authors:
//      pwest       Patrick West <pwest@ucar.edu>
//      jgarcia     Jose Garcia <jgarcia@ucar.edu>

#include "BESContextManager.h"
#include "BESInfo.h"

BESContextManager *BESContextManager::_instance = 0 ;

void
BESContextManager::set_context( const string &name, const string &value )
{
    _context_list[name] = value ;
}

void
BESContextManager::unset_context( const string &name )
{
    _context_list.erase(name);
}

string
BESContextManager::get_context( const string &name, bool &found )
{
    string ret = "";
    found = false;
    BESContextManager::Context_iter i;
    i = _context_list.find(name);
    if (i != _context_list.end()) {
        ret = (*i).second;
        found = true;
    }
    return ret;
}

void
BESContextManager::list_context( BESInfo &info )
{
    string name ;
    string value ;
    map<string,string> props ;
    BESContextManager::Context_citer i = _context_list.begin() ;
    BESContextManager::Context_citer e = _context_list.end() ;
    for( ; i != e; i++ )
    {
        props.clear() ;
        name = (*i).first ;
        value = (*i).second ;
        props["name"] = name ;
        info.add_tag( "context", value, &props ) ;
    }
}

void
BESContextManager::dump( ostream &strm ) const
{
    strm << BESIndent::LMarg << "BESContextManager::dump - ("
                             << (void *)this << ")" << endl ;
    BESIndent::Indent() ;
    if( _context_list.size() )
    {
        strm << BESIndent::LMarg << "current context:" << endl ;
        BESIndent::Indent() ;
        BESContextManager::Context_citer i = _context_list.begin() ;
        BESContextManager::Context_citer ie = _context_list.end() ;
        for( ; i != ie; i++ ) 
        {
            strm << BESIndent::LMarg << (*i).first << ": " << (*i).second
                 << endl ;
        }
        BESIndent::UnIndent() ;
    }
    else
    {
        strm << BESIndent::LMarg << "no context" << endl ;
    }
    BESIndent::UnIndent() ;
}

BESContextManager *
BESContextManager::TheManager()
{
    if( _instance == 0 )
    {
        _instance = new BESContextManager ;
    }
    return _instance ;
}