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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
+ */
+
+#ifndef PALUDIS_GUARD_PALUDIS_REPOSITORIES_PORTAGE_PORTAGE_REPOSITORY_METADATA_HH
+#define PALUDIS_GUARD_PALUDIS_REPOSITORIES_PORTAGE_PORTAGE_REPOSITORY_METADATA_HH 1
+
+#include <paludis/name.hh>
+#include <paludis/repository.hh>
+#include <paludis/version_spec.hh>
+#include <paludis/version_metadata.hh>
+#include <paludis/util/instantiation_policy.hh>
+#include <paludis/util/virtual_constructor.hh>
+#include <paludis/repositories/gentoo/portage_repository_profile.hh>
+#include <paludis/repositories/gentoo/portage_repository_params.hh>
+#include <string>
+
+/** \file
+ * Declaration for the PortageRepositoryEntries class.
+ *
+ * \ingroup grpportagerepository
+ */
+
+namespace paludis
+{
+ class PortageRepository;
+ class Environment;
+
+ /**
+ * Handle entries (for example, ebuilds) in a PortageRepository.
+ *
+ * \ingroup grpportagerepository
+ * \nosubgrouping
+ */
+ class PALUDIS_VISIBLE PortageRepositoryEntries
+ {
+ private:
+ const std::string _ext;
+
+ protected:
+ ///\name Basic operations
+ ///\{
+
+ /// Constructor, with our file extension
+ PortageRepositoryEntries(const std::string & ext);
+
+ ///\}
+
+ public:
+ ///\name Basic operations
+ ///\{
+
+ virtual ~PortageRepositoryEntries();
+
+ ///\}
+
+ /**
+ * Return our file extension, including the dot.
+ */
+ std::string file_extension() const
+ {
+ return _ext;
+ }
+
+ /**
+ * Generate version metadata.
+ */
+ virtual std::tr1::shared_ptr<VersionMetadata> generate_version_metadata(const QualifiedPackageName &,
+ const VersionSpec &) const = 0;
+
+ /**
+ * Fetch an environment variable.
+ */
+ virtual std::string get_environment_variable(const QualifiedPackageName &,
+ const VersionSpec &, const std::string & var,
+ std::tr1::shared_ptr<const PortageRepositoryProfile>) const = 0;
+
+ virtual void install(const QualifiedPackageName &, const VersionSpec &,
+ const InstallOptions &, std::tr1::shared_ptr<const PortageRepositoryProfile>) const = 0;
+ };
+
+ /**
+ * Thrown if a repository of the specified type does not exist.
+ *
+ * \ingroup grpexceptions
+ * \ingroup grprepository
+ * \nosubgrouping
+ */
+ class PALUDIS_VISIBLE NoSuchPortageRepositoryEntriesType : public ConfigurationError
+ {
+ public:
+ /**
+ * Constructor.
+ */
+ NoSuchPortageRepositoryEntriesType(const std::string & format) throw ();
+ };
+
+ /**
+ * Virtual constructor for PortageRepositoryEntries.
+ *
+ * \ingroup grprepository
+ */
+ class PortageRepositoryEntriesMaker :
+ public VirtualConstructor<std::string,
+ std::tr1::shared_ptr<PortageRepositoryEntries> (*) (const Environment * const, PortageRepository * const,
+ const PortageRepositoryParams &),
+ virtual_constructor_not_found::ThrowException<NoSuchPortageRepositoryEntriesType> >,
+ public InstantiationPolicy<PortageRepositoryEntriesMaker, instantiation_method::SingletonTag>
+ {
+ friend class InstantiationPolicy<PortageRepositoryEntriesMaker, instantiation_method::SingletonTag>;
+
+ private:
+ PortageRepositoryEntriesMaker();
+ };
+
+}
+
+#endif