1
0
Fork 0
mirror of https://git.rwth-aachen.de/acs/public/villas/node/ synced 2025-03-16 00:00:02 +01:00
VILLASnode/include/villas/formats/line.hpp

95 lines
2.7 KiB
C++

/** Line-based formats
*
* @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 <villas/format.hpp>
namespace villas {
namespace node {
class LineFormat : public Format {
protected:
virtual size_t sprintLine(char *buf, size_t len, const struct sample *smp) = 0;
virtual size_t sscanLine(const char *buf, size_t len, struct sample *smp) = 0;
char delimiter; /**< Newline delimiter. */
char comment; /**< Prefix for comment lines. */
bool skip_first_line; /**< While reading, the first line is skipped (header) */
bool print_header; /**< Before any data, a header line is printed */
bool first_line_skipped;
bool header_printed;
public:
LineFormat(int fl, char delim = '\n', char com = '#') :
Format(fl),
delimiter(delim),
comment(com),
skip_first_line(false),
print_header(true),
first_line_skipped(false),
header_printed(false)
{ }
/** Print a header. */
virtual void header(FILE *f, const struct vlist *sigs)
{
header_printed = true;
}
virtual int sprint(char *buf, size_t len, size_t *wbytes, const struct sample * const smps[], unsigned cnt);
virtual int sscan(const char *buf, size_t len, size_t *rbytes, struct sample * const smps[], unsigned cnt);
virtual int scan(FILE *f, struct sample * const smps[], unsigned cnt);
virtual int print(FILE *f, const struct sample * const smps[], unsigned cnt);
virtual void parse(json_t *json);
};
template <typename T, const char *name, const char *desc, int flags = 0, char delimiter = '\n'>
class LineFormatPlugin : public FormatFactory {
public:
using FormatFactory::FormatFactory;
virtual Format * make()
{
return new T(flags, delimiter);
}
/// Get plugin name
virtual std::string
getName() const
{ return name; }
/// Get plugin description
virtual std::string
getDescription() const
{ return desc; }
};
} /* namespace node */
} /* namespace villas */