/*
    Copyright (c) 2006 - 2007 Volker Krause <vkrause@kde.org>

    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 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 Library General Public
    License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
*/
/**
  @file
  This file is part of the API for handling @ref MIME data and
  defines the ContentIndex class.

  @brief
  Defines the ContentIndex class.

  @authors Volker Krause \<vkrause@kde.org\>
*/

#include "kmime_contentindex.h"

#include <QHash>
#include <QSharedData>
#include <QtCore/QStringList>

using namespace KMime;

class ContentIndex::Private : public QSharedData
{
  public:
    Private() {}
    Private( const Private &other ) : QSharedData( other )
    {
      index = other.index;
    }

    QList<unsigned int> index;
};

KMime::ContentIndex::ContentIndex() : d( new Private )
{
}

KMime::ContentIndex::ContentIndex( const QString &index ) : d( new Private )
{
  const QStringList l = index.split( QLatin1Char( '.' ) );
  foreach ( const QString &s, l ) {
    bool ok;
    unsigned int i = s.toUInt( &ok );
    if ( !ok ) {
      d->index.clear();
      break;
    }
    d->index.append( i );
  }
}

ContentIndex::ContentIndex(const ContentIndex & other) : d( other.d )
{
}

ContentIndex::~ContentIndex()
{
}

bool KMime::ContentIndex::isValid() const
{
  return !d->index.isEmpty();
}

unsigned int KMime::ContentIndex::pop()
{
  return d->index.takeFirst();
}

void KMime::ContentIndex::push( unsigned int index )
{
  d->index.prepend( index );
}

QString KMime::ContentIndex::toString() const
{
  QStringList l;
  foreach ( unsigned int i, d->index ) {
    l.append( QString::number( i ) );
  }
  return l.join( QLatin1String( "." ) );
}

bool KMime::ContentIndex::operator ==( const ContentIndex &index ) const
{
  return d->index == index.d->index;
}

bool KMime::ContentIndex::operator !=( const ContentIndex &index ) const
{
  return d->index != index.d->index;
}

ContentIndex& ContentIndex::operator =(const ContentIndex & other)
{
  if ( this != &other ) {
    d = other.d;
  }
  return *this;
}

uint qHash( const KMime::ContentIndex &index )
{
  return qHash( index.toString() );
}