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VILLASnode/include/villas/formats/json.hpp

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/* JSON serializtion sample data.
*
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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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*/
#pragma once
#include <jansson.h>
#include <villas/format.hpp>
namespace villas {
namespace node {
// Forward declarations
struct Sample;
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class JsonFormat : public Format {
protected:
static enum SignalType detect(const json_t *val);
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json_t *packFlags(const struct Sample *smp);
int unpackFlags(json_t *json_ts, struct Sample *smp);
json_t *packTimestamps(const struct Sample *smp);
int unpackTimestamps(json_t *json_ts, struct Sample *smp);
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virtual int packSample(json_t **j, const struct Sample *smp);
virtual int packSamples(json_t **j, const struct Sample *const smps[],
unsigned cnt);
virtual int unpackSample(json_t *json_smp, struct Sample *smp);
virtual int unpackSamples(json_t *json_smps, struct Sample *const smps[],
unsigned cnt);
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int dump_flags;
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public:
JsonFormat(int fl) : Format(fl), dump_flags(0) {}
virtual int sscan(const char *buf, size_t len, size_t *rbytes,
struct Sample *const smps[], unsigned cnt);
virtual int sprint(char *buf, size_t len, size_t *wbytes,
const struct Sample *const smps[], unsigned cnt);
virtual int print(FILE *f, const struct Sample *const smps[], unsigned cnt);
virtual int scan(FILE *f, struct Sample *const smps[], unsigned cnt);
virtual void parse(json_t *json);
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};
} // namespace node
} // namespace villas