mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
92 lines
2 KiB
C++
92 lines
2 KiB
C++
/* Line-based formats.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <villas/format.hpp>
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namespace villas {
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namespace node {
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class LineFormat : public Format {
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protected:
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virtual
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size_t sprintLine(char *buf, size_t len, const struct Sample *smp) = 0;
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virtual
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size_t sscanLine(const char *buf, size_t len, struct Sample *smp) = 0;
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char delimiter; // Newline delimiter.
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char comment; // Prefix for comment lines.
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bool skip_first_line; // While reading, the first line is skipped (header)
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bool print_header; // Before any data, a header line is printed
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bool first_line_skipped;
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bool header_printed;
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public:
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LineFormat(int fl, char delim = '\n', char com = '#') :
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Format(fl),
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delimiter(delim),
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comment(com),
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skip_first_line(false),
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print_header(true),
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first_line_skipped(false),
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header_printed(false)
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{ }
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// Print a header
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virtual
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void header(FILE *f, const SignalList::Ptr sigs)
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{
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header_printed = true;
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}
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virtual
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int sprint(char *buf, size_t len, size_t *wbytes, const struct Sample * const smps[], unsigned cnt);
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virtual
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int sscan(const char *buf, size_t len, size_t *rbytes, struct Sample * const smps[], unsigned cnt);
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virtual
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int scan(FILE *f, struct Sample * const smps[], unsigned cnt);
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virtual
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int print(FILE *f, const struct Sample * const smps[], unsigned cnt);
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virtual
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void parse(json_t *json);
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};
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template <typename T, const char *name, const char *desc, int flags = 0, char delimiter = '\n'>
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class LineFormatPlugin : public FormatFactory {
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public:
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using FormatFactory::FormatFactory;
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virtual
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Format * make()
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{
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return new T(flags, delimiter);
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}
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/// Get plugin name
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virtual
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std::string getName() const
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{
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return name;
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}
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/// Get plugin description
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virtual
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std::string getDescription() const
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{
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return desc;
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}
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};
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} // namespace node
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} // namespace villas
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