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VILLASnode/include/villas/config.hpp
2020-06-08 03:40:25 +02:00

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/** Configuration file parsing.
*
* @file
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
* @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* 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 3 of the License, or
* 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, see <http://www.gnu.org/licenses/>.
*********************************************************************************/
#pragma once
#include <jansson.h>
#include <villas/node/config.h>
#include <villas/advio.hpp>
namespace villas {
namespace node {
class Config {
protected:
std::string uri;
FILE *local_file;
AFILE *remote_file;
Logger logger;
/** Check if file exists on local system. */
static bool isLocalFile(const std::string &uri)
{
return access(uri.c_str(), F_OK) != -1;
}
/** Decode configuration file. */
void decode();
#ifdef WITH_CONFIG
/** Convert libconfig .conf file to libjansson .json file. */
void libconfigDecode();
#endif /* WITH_CONFIG */
/** Load configuration from standard input (stdim). */
void loadFromStdio();
/** Load configuration from local file. */
void loadFromLocalFile(const std::string &u);
/** Load configuration from a remote URI via advio. */
void loadFromRemoteFile(const std::string &u);
public:
json_t *root;
Config();
Config(const std::string &u);
~Config();
void load(const std::string &u);
/** Pretty-print libjansson error. */
void prettyPrintError(json_error_t err);
};
} // namespace node
} // namespace villas