mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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41 lines
944 B
C++
41 lines
944 B
C++
/** A simple buffer for encoding streamed JSON messages.
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*
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* @author Steffen Vogel <post@steffenvogel.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license Apache License 2.0
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*********************************************************************************/
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#include <villas/compat.hpp>
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#include <villas/buffer.hpp>
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using namespace villas;
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json_t * Buffer::decode()
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{
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json_t *j;
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json_error_t err;
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j = json_loadb(data(), size(), JSON_DISABLE_EOF_CHECK, &err);
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if (!j)
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return nullptr;
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// Remove decoded JSON document from beginning
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erase(begin(), begin() + err.position);
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return j;
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}
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int Buffer::encode(json_t *j, int flags)
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{
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return json_dump_callback(j, callback, this, flags);
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}
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int Buffer::callback(const char *data, size_t len, void *ctx)
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{
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Buffer *b = static_cast<Buffer *>(ctx);
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// Append junk of JSON to buffer
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b->insert(b->end(), &data[0], &data[len]);
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return 0;
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}
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