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/* vim: set sw=4 sts=4 et foldmethod=syntax : */
/*
* Copyright (c) 2006, 2007 Ciaran McCreesh <ciaranm@ciaranm.org>
*
* 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 "eclass_mtimes.hh"
#include <paludis/hashed_containers.hh>
#include <paludis/util/private_implementation_pattern-impl.hh>
#include <paludis/util/sequence.hh>
#include <paludis/util/fs_entry.hh>
#include <paludis/util/mutex.hh>
#include <libwrapiter/libwrapiter_forward_iterator.hh>
#include <libwrapiter/libwrapiter_output_iterator.hh>
using namespace paludis;
namespace paludis
{
template<>
struct Implementation<EclassMtimes>
{
tr1::shared_ptr<const FSEntrySequence> eclass_dirs;
mutable Mutex mutex;
mutable MakeHashedMap<std::string, time_t>::Type eclass_mtimes;
Implementation(tr1::shared_ptr<const FSEntrySequence> d) :
eclass_dirs(d)
{
}
};
}
EclassMtimes::EclassMtimes(tr1::shared_ptr<const FSEntrySequence> d) :
PrivateImplementationPattern<EclassMtimes>(new Implementation<EclassMtimes>(d))
{
}
EclassMtimes::~EclassMtimes()
{
}
time_t
EclassMtimes::mtime(const std::string & e) const
{
Lock l(_imp->mutex);
MakeHashedMap<std::string, time_t>::Type::const_iterator i(_imp->eclass_mtimes.find(e));
if (i != _imp->eclass_mtimes.end())
return i->second;
time_t r(0);
for (FSEntrySequence::ConstIterator d(_imp->eclass_dirs->begin()),
d_end(_imp->eclass_dirs->end()) ; d != d_end ; ++d)
{
FSEntry f(*d / (e + ".eclass"));
if (f.exists())
r = std::max(r, f.mtime());
}
_imp->eclass_mtimes.insert(std::make_pair(e, r));
return r;
}
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