EnvironmentVariable.cpp

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/* 
 * Confdump-Agent - Dump static and runtime system configuration
 * Copyright (C) 2009-2012  Straton IT, SAS
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <cstdlib>
#include <stdexcept>

#include "Confdump/RuntimeError.hpp"
#include "Confdump/System/Linux/EnvironmentVariable.hpp"

extern char **environ;

namespace Confdump
{

namespace System
{

namespace Linux
{

EnvironmentVariable::EnvironmentVariable( boost::shared_ptr<const LinuxDumper> driver, QString name )
 : name_( name )
{
    QByteArray name_raw = name.toLocal8Bit();
    if ( const char* raw_value = getenv( name_raw.data() ) )
    {
        value_ = QString( raw_value );
    }
    else
    {
        throw RuntimeError( tr( "EnvironmentVariable: no such variable '%1'" ).arg( name ) );
    }
}

EnvironmentVariable::EnvironmentVariable( QString name, QString value )
 : name_( name ), value_( value )
{
}

EnvironmentVariable::~EnvironmentVariable()
{
}

std::vector< boost::shared_ptr< EnvironmentVariable > > EnvironmentVariable::allSystemInstances( boost::shared_ptr<const LinuxDumper> driver )
{
    std::vector<boost::shared_ptr< EnvironmentVariable > > instances;

    for ( char *const *raw_var = environ; *raw_var; ++raw_var )
    {
        QString var( QString::fromLocal8Bit( *raw_var ) );
        QString name ( var.section( '=', 0, 0 ) );
        QString value ( var.section( '=', 1, -1 ) );

        boost::shared_ptr<EnvironmentVariable> instance( new EnvironmentVariable( name, value ) );
        instances.push_back( instance );
    }

    return instances;
}

QString EnvironmentVariable::name() const
{
    return name_;
}

QString EnvironmentVariable::value() const
{
    return value_;
}

}
}
}