74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
#ifndef JSON_HPP
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#define JSON_HPP
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#include <stddef.h>
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#include <stdint.h>
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#include <zephyr/data/json.h>
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namespace JsonParser
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{
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void init();
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void add_text(const uint8_t* buf, size_t size);
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int json_printer(const char* bytes, size_t len, void* data);
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class HandlerBase
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{
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public:
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/* private but accessible from static functions */
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HandlerBase* _next;
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HandlerBase();
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virtual bool handle(const char* buf, size_t size) = 0;
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};
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template <typename Struct, size_t DESC_SIZE, typename Fct>
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class Handler: public HandlerBase
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{
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const Struct& _s;
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const json_obj_descr* _da;
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Fct _fct;
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bool _allow_partial;
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const int64_t _all_fields;
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public:
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Handler(Struct default_s, const json_obj_descr (&da)[DESC_SIZE], Fct fct, bool allow_partial=false):
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_s {default_s},
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_da {da},
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_fct {fct},
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_allow_partial{allow_partial},
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_all_fields {(1 << DESC_SIZE) - 1}
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{
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}
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void print( const Struct& s) { json_obj_encode(_da, DESC_SIZE, &s, json_printer, NULL); }
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bool handle(const char* buf, size_t size) override
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{
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Struct s{_s};
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int64_t ret = json_obj_parse((char*)buf, size, _da, DESC_SIZE, &s);
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if (ret <= 0)
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{
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return false;
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}
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if(ret != _all_fields && !_allow_partial)
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{
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return false;
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}
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if (!_fct(s, ret, _all_fields))
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{
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return false;
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}
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// LOG_INF"received a valid json\n");
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// print(s);
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// LOG_INF"\n");
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return true;
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}
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};
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} // namespace JsonParser
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#endif /* JSON_HPP */
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