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hfp use state maschine instead of while

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This commit is contained in:
Milanka Ringwald 2015-07-16 22:46:01 +02:00
parent 9410587b1d
commit 63ec1ba8aa
1 changed files with 45 additions and 51 deletions
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72
src/hfp_hf.c
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@ -227,63 +227,57 @@ static void hfp_run_for_context(hfp_connection_t * connection){
} }
void hfp_parse_indicators(hfp_connection_t * context, uint8_t *packet, uint16_t size){ void hfp_parse_indicators(hfp_connection_t * context, uint8_t *packet, uint16_t size){
uint8_t parse_indicator = 0;
uint8_t parse_range = 0;
uint8_t parse_max_range = 0;
uint8_t byte;
char indicator[10]; char indicator[10];
char min_range[3]; char min_range[3];
char max_range[3]; char max_range[3];
int i, pos;
int index = 0;
int state = 0;
int i; for (pos = 0; pos < size; pos++){
int pos = 0; uint8_t byte = packet[pos];
while ( pos < size ){ switch (state){
while (!parse_indicator && pos < size){ case 0: // pre-indicator
byte = packet[pos++]; if (byte != '"') break;
if (byte == '"'){ state++;
parse_indicator = 1;
break;
}
}
i = 0; i = 0;
while (parse_indicator && pos < size){ break;
byte = packet[pos++]; case 1: // indicator
if (byte == '"'){ if (byte == '"'){
parse_indicator = 0; state++;
indicator[i] = 0; indicator[i] = 0;
break; break;
} }
indicator[i++] = byte; indicator[i++] = byte;
}
while (!parse_range && pos < size){
byte = packet[pos++];
if (byte == '('){
parse_range = 1;
}
}
i = 0;
while (parse_range && pos < size){
byte = packet[pos++];
if (byte == ')'){
parse_range = 0;
parse_max_range = 0;
max_range[i] = 0;
printf("Indicator %s, min %d, max %d\n", indicator, atoi(min_range), atoi(max_range));
break; break;
} case 2: // pre-range
if (byte != '(') break;
state++;
i = 0;
break;
case 3: // min-range
if (byte == ','){ if (byte == ','){
parse_max_range = 1; state++;
min_range[i] = 0; min_range[i] = 0;
i = 0; i = 0;
continue; break;
} }
if (parse_max_range){
max_range[i++] = byte;
} else {
min_range[i++] = byte; min_range[i++] = byte;
break;
case 4:
if (byte == ')'){
state = 0;
max_range[i] = 0;
printf("Indicator %d: %s, range [%d, %d] \n", index, indicator, atoi(min_range), atoi(max_range));
index++;
i = 0;
break;
} }
max_range[i++] = byte;
break;
default:
break;
} }
} }
} }