Header parsing

README.md

@@ -4,6 +4,11 @@ Work in progress.
 
 Goals are: parsing an IGC file containing flight data, giving analytics about the flight, and if I really have time to kill, making some kind of (3D??) view of the flight..
 
+TODO:
+- header parsing
+- data point doubly linked list
+- Raylib 3d 3rd person flight line visualization????
+
 # License
 
 GNU GPL v3

igc.c

@@ -49,18 +49,62 @@ struct IGC_DataPoint* parse_datapoint(char* line)
 	dp->lon.cardinal = line[23] == EAST ? EAST : WEST;
 	dp->baro_alt = atoi(baro_alt);
 	dp->gps_alt = atoi(gps_alt);
-
-	printf("Data point: %d:%d:%d | %d°%d'%d\"%c %d°%d'%d\"%c | Baro: %dm GPS: %dm\n", dp->hour, dp->minute, dp->second, dp->lat.deg, dp->lat.min, dp->lat.sec, dp->lat.cardinal, dp->lon.deg, dp->lon.min, dp->lon.sec, dp->lon.cardinal, dp->baro_alt, dp->gps_alt);
 	
 	return dp;
 }
 
-void parse_header_record(char* line)
+void show_datapoint(struct IGC_DataPoint* dp)
+{
+	printf("Data point: %02d:%02d:%02d | %d°%d'%d\"%c %d°%d'%d\"%c | Baro: %dm GPS: %dm\n", dp->hour, dp->minute, dp->second, dp->lat.deg, dp->lat.min, dp->lat.sec, dp->lat.cardinal, dp->lon.deg, dp->lon.min, dp->lon.sec, dp->lon.cardinal, dp->baro_alt, dp->gps_alt);
+}
+
+void show_header_info(struct IGC_Header* hdr)
+{
+	printf("*** Flight information:\nDate:         %02d/%02d/%02d\nPilot:        %sCopilot:      %sAircraft:     %sRegistration: %s", hdr->day, hdr->month, hdr->year, hdr->pilot_name, hdr->crew2_name, hdr->aircraft_name, hdr->aircraft_registration_no); 
+}
+
+struct IGC_Header* parse_header_record(struct IGC_Header* hdr, char* line)
 {
 	if (strncmp(line, "HFDTEDATE", 9) == 0)
 	{
-			
+		strtok(line, ":");
+		char* date_str = strtok(NULL, ":");
+		char day[3], month[3], year[3] = {0};
+
+		memcpy(day, date_str, 2);
+		memcpy(month, date_str+2, 2);
+		memcpy(year, date_str+4, 2);
+
+		hdr->day = atoi(day);
+		hdr->month = atoi(month);
+		hdr->year = atoi(year);	
 	}
+	if (strncmp(line, "HFPLTPILOTINCHARGE", 18) == 0)
+	{
+		strtok(line, ":");
+		strncpy(hdr->pilot_name, strtok(NULL, ":"), SMALL_NAME_MAX);
+	}
+	if (strncmp(line, "HFCM2CREW2", 10) == 0)
+	{
+		strtok(line, ":");
+		strncpy(hdr->crew2_name, strtok(NULL, ":"), SMALL_NAME_MAX);
+	}	
+	if (strncmp(line, "HFGTYGLIDERTYPE", 15) == 0)
+	{
+		strtok(line, ":");
+		strncpy(hdr->aircraft_name, strtok(NULL, ":"), SMALL_NAME_MAX);
+	}
+	if (strncmp(line, "HFGIDGLIDERID", 13) == 0)
+	{
+		strtok(line, ":");
+		strncpy(hdr->aircraft_registration_no, strtok(NULL, ":"), SMALL_NAME_MAX);
+	}
+	if (strncmp(line, "HFDTMGPSDATUM", 13) == 0)
+	{
+		strtok(line, ":");
+		strncpy(hdr->gps_datum, strtok(NULL, ":"), SMALL_NAME_MAX);
+	}
+	return hdr;
 }
 
 void parse_igc_file(FILE* fp)
@@ -68,23 +112,36 @@ void parse_igc_file(FILE* fp)
 	size_t len = 0;
 	char* line = NULL;
 
+	struct IGC_Header* hdr = (struct IGC_Header*)calloc(1, sizeof(struct IGC_Header));
+
 	while (getline(&line, &len, fp)	!= -1)
 	{
 		switch(line[0])
 		{
+			case MANUFACTURER:
+				printf("Manufacturer info: %s", line);
+				break;
+			case COMMENT:
+				printf("Comment: %s", line);
+				break;
 			case DATAPOINT:
 				struct IGC_DataPoint* dp = parse_datapoint(line);
+				// show_datapoint(dp);
 				// Doubly linked list of points (so theyre joined in chronological order; opens possibilities for analysis later)
 				// append_datapoint(dp);
 				break;
 			case HEADER:
-				parse_header_record(line);
+				hdr = parse_header_record(hdr, line);
 				break;			
+			case SEC_KEY:
+				printf("Security key found: %s", line);
+				break;
 			default:
-				printf("Unrecognized record type '%c'\n", line[0]);
+				printf("Unhandled record type '%c'\n", line[0]);
 				break;
 		}
 	}
+	show_header_info(hdr);
 }
 
 int main(int argc, char* argv[])

igc.h

@@ -9,11 +9,10 @@
 #ifndef IGC_H
 #define IGC_H
 
+#define SMALL_NAME_MAX 32
 #define NAME_MAX 256
 #define TMP_SIZE 8
 
-void parse_igc_file(FILE* fp);
-
 enum IGC_RecordType
 {
 	MANUFACTURER = 'A',
@@ -27,7 +26,7 @@ enum IGC_RecordType
 	PILOT_EVENT = 'E',
 	GEN_PURPOSE_PLACEHOLDER = 'K',
 	COMMENT = 'L',
-	SEC_KEY = 'G'
+	SEC_KEY = 'G',
 };
 
 enum Cardinals
@@ -53,16 +52,18 @@ struct IGC_Header
 	int year;
 
 	// Not exhaustive
-	char pilot_name[NAME_MAX] = {0};
-	char crew2_name[NAME_MAX] = {0};
-	char aircraft_name[NAME_MAX] = {0};
-	char aircraft_registration_no[NAME_MAX] = {0};
-	char gps_datum[NAME_MAX] = {0};
-	char firmware_ver[NAME_MAX] = {0};
-	char hardware_ver[NAME_MAX] = {0};
-	char frtype[NAME_MAX] = {0};
-	char press_alt_sensor[NAME_MAX] = {0};
-}
+	char pilot_name[NAME_MAX];
+	char crew2_name[NAME_MAX];
+	char aircraft_name[NAME_MAX];
+	char aircraft_registration_no[NAME_MAX];
+	char gps_datum[NAME_MAX];
+	
+	// (not too important; ignored for now, may be part of "verbose" setting later)
+	char firmware_ver[NAME_MAX];
+	char hardware_ver[NAME_MAX];
+	char frtype[NAME_MAX];
+	char press_alt_sensor[NAME_MAX];
+};
 
 struct IGC_DataPoint
 {
@@ -80,4 +81,10 @@ struct IGC_DataPoint
 	int gps_alt;
 };
 
+void parse_igc_file(FILE* fp);
+struct IGC_DataPoint* parse_datapoint(char* line);
+void show_datapoint(struct IGC_DataPoint* dp);
+void show_header_info(struct IGC_Header* hdr);
+struct IGC_Header* parse_header_record(struct IGC_Header* hdr, char* line);
+
 #endif