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hfp: rewrite parser done

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This commit is contained in:
Milanka Ringwald 2015-08-14 17:17:04 +02:00
parent 67c47d0d10
commit e11a0e7d0f
3 changed files with 39 additions and 67 deletions
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90
src/hfp.c
View File

@ -502,32 +502,30 @@ static void hfp_parser_store_byte(hfp_connection_t * context, uint8_t byte){
context->line_buffer[context->line_size++] = byte;
context->line_buffer[context->line_size] = 0;
}
static int hfp_parser_buffer_empty(hfp_connection_t * context){
static int hfp_parser_is_buffer_empty(hfp_connection_t * context){
return context->line_size == 0;
}
static int hfp_parser_reached_end_of_line(uint8_t byte){
static int hfp_parser_is_end_of_line(uint8_t byte){
return byte == '\n' || byte == '\r';
}
static int hfp_parser_reached_end_of_header(uint8_t byte){
return hfp_parser_reached_end_of_line(byte) || byte == ':' || byte == '?';
}
static int hfp_parser_reached_sequence_separator(uint8_t byte){
return byte == ',';
static int hfp_parser_is_end_of_header(uint8_t byte){
return hfp_parser_is_end_of_line(byte) || byte == ':' || byte == '?';
}
static int hfp_parser_found_separator(hfp_connection_t * context, uint8_t byte){
if (context->keep_separator == 1) return 1;
int found_separator = byte == ',' || byte == '\n' || byte == '\r' ||
byte == ')' || byte == '(' || byte == ':' ||
byte == '-' || byte == '"' || byte == '?' || byte == '=';
return found_separator || context->keep_byte == 1;
return found_separator;
}
static void hfp_parser_next_state(hfp_connection_t * context, uint8_t byte){
context->line_size = 0;
if (hfp_parser_reached_end_of_line(byte)){
if (hfp_parser_is_end_of_line(byte)){
context->parser_item_index = 0;
context->parser_state = HFP_PARSER_CMD_HEADER;
return;
@ -535,9 +533,9 @@ static void hfp_parser_next_state(hfp_connection_t * context, uint8_t byte){
switch (context->parser_state){
case HFP_PARSER_CMD_HEADER:
context->parser_state = HFP_PARSER_CMD_SEQUENCE;
if (context->keep_byte == 1){
if (context->keep_separator == 1){
hfp_parser_store_byte(context, byte);
context->keep_byte = 0;
context->keep_separator = 0;
}
break;
case HFP_PARSER_CMD_SEQUENCE:
@ -577,45 +575,36 @@ static void hfp_parser_next_state(hfp_connection_t * context, uint8_t byte){
void hfp_parse(hfp_connection_t * context, uint8_t byte){
int value;
int reached_end = 0;
context->line_buffer[context->line_size] = 0;
if (byte == ' ') return;
// TODO: handle space inside word
if (byte == ' ') return;
if (!hfp_parser_found_separator(context, byte)){
hfp_parser_store_byte(context, byte);
return;
}
if (hfp_parser_is_buffer_empty(context)) return;
switch (context->parser_state){
case HFP_PARSER_CMD_HEADER: // header
if (!hfp_parser_found_separator(context, byte)){
hfp_parser_store_byte(context, byte);
break;
}
if (hfp_parser_buffer_empty(context)) break;
if (byte == '='){
context->keep_byte = 1;
context->keep_separator = 1;
hfp_parser_store_byte(context, byte);
break;
return;
}
if (byte == '?'){
context->keep_byte = 0;
context->keep_separator = 0;
hfp_parser_store_byte(context, byte);
break;
return;
}
if (hfp_parser_reached_end_of_header(byte) || context->keep_byte == 1){
if (hfp_parser_is_end_of_header(byte) || context->keep_separator == 1){
update_command(context);
}
hfp_parser_next_state(context, byte);
break;
case HFP_PARSER_CMD_SEQUENCE: // parse comma separated sequence, ignore breacktes
if (!hfp_parser_found_separator(context, byte)){
hfp_parser_store_byte(context, byte);
break;
}
if (hfp_parser_buffer_empty(context)) break;
switch (context->command){
case HFP_CMD_SUPPORTED_FEATURES:
context->remote_supported_features = atoi((char*)context->line_buffer);
@ -642,13 +631,11 @@ void hfp_parse(hfp_connection_t * context, uint8_t byte){
}
break;
case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE:
if (context->parser_item_index == 3){
printf("Parsed Enable indicators: %s\n", context->line_buffer);
value = atoi((char *)&context->line_buffer[0]);
context->enable_status_update_for_ag_indicators = (uint8_t) value;
} else {
context->parser_item_index++;
}
context->parser_item_index++;
if (context->parser_item_index != 4) break;
printf("Parsed Enable indicators: %s\n", context->line_buffer);
value = atoi((char *)&context->line_buffer[0]);
context->enable_status_update_for_ag_indicators = (uint8_t) value;
break;
case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES:
printf("Parsed Support call hold: %s\n", context->line_buffer);
@ -712,17 +699,9 @@ void hfp_parse(hfp_connection_t * context, uint8_t byte){
default:
break;
}
hfp_parser_next_state(context, byte);
break;
case HFP_PARSER_SECOND_ITEM:
if (!hfp_parser_found_separator(context, byte)){
hfp_parser_store_byte(context, byte);
break;
}
if (hfp_parser_buffer_empty(context)) break;
switch (context->command){
case HFP_CMD_QUERY_OPERATOR_SELECTION:
if (context->operator_name_format == 1) {
@ -751,17 +730,10 @@ void hfp_parse(hfp_connection_t * context, uint8_t byte){
default:
break;
}
hfp_parser_next_state(context, byte);
break;
case HFP_PARSER_THIRD_ITEM:
if (!hfp_parser_found_separator(context, byte)){
hfp_parser_store_byte(context, byte);
break;
}
if (hfp_parser_buffer_empty(context)) break;
switch (context->command){
switch (context->command){
case HFP_CMD_QUERY_OPERATOR_SELECTION:
if (context->operator_name == 1){
strcpy(context->network_operator.name, (char *)context->line_buffer);
@ -779,9 +751,9 @@ void hfp_parse(hfp_connection_t * context, uint8_t byte){
default:
break;
}
hfp_parser_next_state(context, byte);
break;
}
hfp_parser_next_state(context, byte);
}
void hfp_init(uint16_t rfcomm_channel_nr){

2
src/hfp.h
View File

@ -255,7 +255,7 @@ typedef struct hfp_connection {
// TODO: put these bit flags in a bitmap
uint8_t wait_ok;
uint8_t keep_byte;
uint8_t keep_separator;
uint8_t retrieve_ag_indicators; // HFP_CMD_INDICATOR, check if needed
uint8_t retrieve_ag_indicators_status;

14
test/hfp/hfp_ag_parser_test.c
View File

@ -54,12 +54,12 @@ hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context);
int get_hfp_ag_indicators_nr(hfp_connection_t * context);
void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr);
static int hf_indicators_nr = 3;
static hfp_generic_status_indicator_t hf_indicators[] = {
{1, 1},
{2, 1},
{3, 1}
};
// static int hf_indicators_nr = 3;
// static hfp_generic_status_indicator_t hf_indicators[] = {
// {1, 1},
// {2, 1},
// {3, 1}
// };
static int hfp_ag_indicators_nr = 7;
static hfp_ag_indicator_t hfp_ag_indicators[] = {
@ -91,7 +91,7 @@ TEST_GROUP(HFPParser){
TEST(HFPParser, HFP_AG_SUPPORTED_FEATURES){
sprintf(packet, "\r\nAT%s=159\r\n", HFP_SUPPORTED_FEATURES);
context.keep_byte = 0;
context.keep_separator = 0;
for (pos = 0; pos < strlen(packet); pos++){
hfp_parse(&context, packet[pos]);
}