mirror of https://github.com/arendst/Tasmota.git
37 lines
916 B
C++
37 lines
916 B
C++
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#include "GbtParser.h"
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#include "lwip/def.h"
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GBTParser::~GBTParser(void) {
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if (buf) free(buf);
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}
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int8_t GBTParser::parse(uint8_t *d, DataParserContext &ctx) {
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GBTHeader* h = (GBTHeader*) (d);
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uint16_t sequence = ntohs(h->sequence);
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if(h->flag != GBT_TAG) return DATA_PARSE_BOUNDRY_FLAG_MISSING;
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if(sequence == 1) {
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if(buf == NULL) buf = (uint8_t *)malloc((size_t)1024); // TODO find out from first package ?
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pos = 0;
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} else if(lastSequenceNumber != sequence-1) {
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return DATA_PARSE_FAIL;
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}
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if(buf == NULL) return DATA_PARSE_FAIL;
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uint8_t* ptr = (uint8_t*) &h[1];
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memcpy(buf + pos, ptr, h->size);
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pos += h->size;
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lastSequenceNumber = sequence;
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if((h->control & 0x80) == 0x00) {
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return DATA_PARSE_INTERMEDIATE_SEGMENT;
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} else {
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memcpy((uint8_t *) d, buf, pos);
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}
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ctx.length = pos;
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return DATA_PARSE_OK;
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}
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