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/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2007 Ciaran McCreesh
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis 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, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <paludis/repositories/e/eapi_phase.hh>
#include <paludis/repositories/e/eapi.hh>
#include <paludis/util/tokeniser.hh>
#include <paludis/util/private_implementation_pattern-impl.hh>
#include <paludis/util/iterator.hh>
#include <paludis/util/make_shared_ptr.hh>
#include <libwrapiter/libwrapiter_forward_iterator.hh>
#include <libwrapiter/libwrapiter_output_iterator.hh>
#include <set>
#include <algorithm>
#include <list>

using namespace paludis;
using namespace paludis::erepository;

namespace paludis
{
    template <>
    struct Implementation<EAPIPhase>
    {
        std::set<std::string> options;
        std::list<std::string> commands;
    };

    template <>
    struct Implementation<EAPIPhases>
    {
        std::list<tr1::shared_ptr<const EAPIPhase> > phases;
    };
}

EAPIPhase::EAPIPhase(const std::string & s) :
    PrivateImplementationPattern<EAPIPhase>(new Implementation<EAPIPhase>)
{
    Context c("When parsing EAPI phase '" + s + "'");

    std::list<std::string> tokens;
    WhitespaceTokeniser::tokenise(s, std::back_inserter(tokens));

    std::list<std::string>::iterator t(std::find(tokens.begin(), tokens.end(), ":"));
    if (t == tokens.end())
        throw EAPIConfigurationError("EAPI phase '" + s + "' contains no ':'");

    std::copy(tokens.begin(), t, std::inserter(_imp->options, _imp->options.begin()));
    std::copy(next(t), tokens.end(), std::back_inserter(_imp->commands));
}

EAPIPhase::~EAPIPhase()
{
}

bool
EAPIPhase::option(const std::string & s) const
{
    return _imp->options.count(s);
}

EAPIPhase::ConstIterator
EAPIPhase::begin_commands() const
{
    return ConstIterator(_imp->commands.begin());
}

EAPIPhase::ConstIterator
EAPIPhase::end_commands() const
{
    return ConstIterator(_imp->commands.end());
}

EAPIPhases::EAPIPhases(const std::string & s) :
    PrivateImplementationPattern<EAPIPhases>(new Implementation<EAPIPhases>)
{
    Context c("When parsing EAPI phases '" + s + "'");

    std::list<std::string> tokens;
    Tokeniser<delim_kind::AnyOfTag>::tokenise(s, ";", std::back_inserter(tokens));
    for (std::list<std::string>::const_iterator t(tokens.begin()), t_end(tokens.end()) ;
            t != t_end ; ++t)
        _imp->phases.push_back(make_shared_ptr(new EAPIPhase(*t)));
}

EAPIPhases::~EAPIPhases()
{
}

EAPIPhases::ConstIterator
EAPIPhases::begin_phases() const
{
    return ConstIterator(indirect_iterator(_imp->phases.begin()));
}

EAPIPhases::ConstIterator
EAPIPhases::end_phases() const
{
    return ConstIterator(indirect_iterator(_imp->phases.end()));
}