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Diffstat (limited to 'src/neighbor/Glue.cxx')
-rw-r--r-- | src/neighbor/Glue.cxx | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/neighbor/Glue.cxx b/src/neighbor/Glue.cxx new file mode 100644 index 000000000..7e29b8410 --- /dev/null +++ b/src/neighbor/Glue.cxx @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "Glue.hxx" +#include "Registry.hxx" +#include "Explorer.hxx" +#include "NeighborPlugin.hxx" +#include "Info.hxx" +#include "config/ConfigGlobal.hxx" +#include "config/ConfigData.hxx" +#include "config/ConfigError.hxx" +#include "util/Error.hxx" + +NeighborGlue::Explorer::~Explorer() +{ + delete explorer; +} + +NeighborGlue::~NeighborGlue() {} + +static NeighborExplorer * +CreateNeighborExplorer(EventLoop &loop, NeighborListener &listener, + const config_param ¶m, Error &error) +{ + const char *plugin_name = param.GetBlockValue("plugin"); + if (plugin_name == nullptr) { + error.Set(config_domain, + "Missing \"plugin\" configuration"); + return nullptr; + } + + const NeighborPlugin *plugin = GetNeighborPluginByName(plugin_name); + if (plugin == nullptr) { + error.Format(config_domain, "No such neighbor plugin: %s", + plugin_name); + return nullptr; + } + + return plugin->create(loop, listener, param, error); +} + +bool +NeighborGlue::Init(EventLoop &loop, NeighborListener &listener, Error &error) +{ + const config_param *param = nullptr; + while ((param = config_get_next_param(CONF_NEIGHBORS, param))) { + NeighborExplorer *explorer = + CreateNeighborExplorer(loop, listener, *param, error); + if (explorer == nullptr) { + error.FormatPrefix("Line %i: ", param->line); + return false; + } + + explorers.emplace_front(explorer); + } + + return true; +} + +bool +NeighborGlue::Open(Error &error) +{ + for (auto i = explorers.begin(), end = explorers.end(); + i != end; ++i) { + if (!i->explorer->Open(error)) { + /* roll back */ + for (auto k = explorers.begin(); k != i; ++k) + k->explorer->Close(); + return false; + } + } + + return true; +} + +void +NeighborGlue::Close() +{ + for (auto i = explorers.begin(), end = explorers.end(); i != end; ++i) + i->explorer->Close(); +} + +NeighborGlue::List +NeighborGlue::GetList() const +{ + List result; + + for (const auto &i : explorers) + result.splice_after(result.before_begin(), + i.explorer->GetList()); + + return result; +} + |