FixedTable.hpp

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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/>.
 */

#ifndef INCLUDED_CONFDUMP_SYSTEM_FIXEDTABLE_HPP
#define INCLUDED_CONFDUMP_SYSTEM_FIXEDTABLE_HPP

#include <iosfwd>
#include <vector>
#include <string>
#include <QByteArray>
#include <QString>
#include <QStringList>
#include "boost/shared_ptr.hpp"

#include "Confdump/Result.hpp"

namespace Confdump
{

namespace System
{

class ManagedElement;

class FixedTable
{
public:
    enum ParsingMode
    {
        DetectWidthsFromHeader,
        UseSpecifiedHeaders
    };

    enum Platform
    {
        Windows,
        Linux
    };
    class Specification
    {
    public:
        Specification();
        ~Specification();

        bool hasHeader() const { return true; }
        ParsingMode parsingMode() const { return UseSpecifiedHeaders; }

        Platform platform() const { return Linux; }

        struct ColumnHead
        {
            std::string name;
            unsigned skip;
            unsigned width;

            ColumnHead() : skip( 0 ), width( 0 ) {}
        };
        Specification& addColumnHead( const std::string &name, unsigned skip, unsigned width );
        typedef std::vector<ColumnHead>::const_iterator ColumnHeadIterator;
        ColumnHeadIterator columnHeadsBegin() const;
        ColumnHeadIterator columnHeadsEnd() const;

    private:
        std::vector<ColumnHead> columnHeads_;
    };

    FixedTable();
    ~FixedTable();

    template<class ElementT>
    void readAllInto( QByteArray byteArray, std::vector< boost::shared_ptr< ElementT > > &elements );

    void setFieldTranslations( const std::map<std::string, std::string> &translations );

    void setSpecification( const Specification &spec );

private:
    std::vector<std::string> header_;
    std::vector<std::string::size_type> columnPositions_;
    Specification specification_;
    std::map<std::string, std::string> fieldTranslations_;

    void readHeaderFrom( const QString Headers );
    bool readLineFrom( const QString line, boost::shared_ptr<ManagedElement> element );
    void detectColumnPositionsFromLine( const std::string &line );
    void checkColumnPositionsFromSpecification( const std::string &line );
    void splitLineOnColumnPositions( const std::string &line, std::vector<std::string> &columns );
};

template<class ElementT>
void FixedTable::readAllInto( QByteArray byteArray, std::vector< boost::shared_ptr< ElementT > > &elements )
{
    QString fileContent(QString::fromLocal8Bit(byteArray));
    QStringList lines;
    QString patern("");
    if( specification_.platform() == Linux)
        patern= "\n";

    lines = fileContent.split(patern);

    if ( specification_.hasHeader() )
        readHeaderFrom( lines[0] );

    for(int i = 1;i < lines.size()-1; i++)
    {
        boost::shared_ptr<ElementT> element( new ElementT() );
        readLineFrom( lines[i], element );
        elements.push_back( element );
    }
}

}
}

#endif /* INCLUDED_CONFDUMP_SYSTEM_FIXEDTABLE_HPP */