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-rw-r--r--paludis/repositories/gemcutter/json_things_handle.cc63
1 files changed, 63 insertions, 0 deletions
diff --git a/paludis/repositories/gemcutter/json_things_handle.cc b/paludis/repositories/gemcutter/json_things_handle.cc
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+++ b/paludis/repositories/gemcutter/json_things_handle.cc
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+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+
+/*
+ * Copyright (c) 2010 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/gemcutter/json_things_handle.hh>
+#include <paludis/util/singleton-impl.hh>
+#include <paludis/util/exception.hh>
+
+#include <paludis/about.hh>
+
+#include <string.h>
+#include <dlfcn.h>
+#include <stdint.h>
+
+#include "config.h"
+
+#define STUPID_CAST(type, val) reinterpret_cast<type>(reinterpret_cast<uintptr_t>(val))
+
+using namespace paludis;
+using namespace paludis::gemcutter_repository;
+
+JSONThingsHandle::JSONThingsHandle() :
+ handle(0),
+ parse_all_gems_function(0)
+{
+ handle = ::dlopen(("libpaludisgemcutterrepositoryjsonthings_" + stringify(PALUDIS_PC_SLOT) + ".so").c_str(), RTLD_NOW | RTLD_GLOBAL);
+ if (! handle)
+ throw NotAvailableError("JSON not available because dlopen said " + stringify(::dlerror()));
+
+ parse_all_gems_function = STUPID_CAST(ParseAllGemsFunction, ::dlsym(handle, "gemcutter_json_things_parse_all_gems"));
+ if (! parse_all_gems_function)
+ throw NotAvailableError("JSON not available because dlsym said " + stringify(::dlerror()));
+}
+
+JSONThingsHandle::~JSONThingsHandle()
+{
+ if (handle)
+ ::dlclose(handle);
+}
+
+void
+JSONThingsHandle::parse_all_gems(const FSPath & p, const ParsedOneGemCallback & c) const
+{
+ parse_all_gems_function(p, c);
+}
+
+template class Singleton<JSONThingsHandle>;
+