90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/*
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* IGC parser
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* @brief parse IGC file, get all data points, compute average horizontal/vertical speed, print to STDOUT
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*
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* As per standard: https://xp-soaring.github.io/igc_file_format/igc_format_2008.html
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* https://xp-soaring.github.io/igc_file_format/igc_fr_specification_with_al8_2023-2-1_0.pdf
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*
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* @author xamidev <xamidev@riseup.net>
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* @license GNU GPL v3
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include "igc.h"
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void parse_igc_file(FILE* fp)
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{
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size_t len = 0;
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char* line = NULL;
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while (getline(&line, &len, fp) != -1)
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{
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switch(line[0])
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{
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case DATAPOINT:
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struct IGC_DataPoint* dp = (struct IGC_DataPoint*)malloc(sizeof(struct IGC_DataPoint));
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char hour[3], min[3], sec[3] = {0};
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char lat_d[3], lat_m[3], lat_s[4] = {0};
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char lon_d[4], lon_m[3], lon_s[4] = {0};
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memcpy(hour, line+1, 2);
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memcpy(min, line+3, 2);
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memcpy(sec, line+5, 2);
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memcpy(lat_d, line+7, 2);
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memcpy(lat_m, line+9, 2);
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memcpy(lat_s, line+11, 3);
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memcpy(lon_d, line+15, 3);
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memcpy(lon_m, line+18, 2);
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memcpy(lon_s, line+20, 3);
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dp->hour = atoi(hour);
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dp->minute = atoi(min);
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dp->second = atoi(sec);
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dp->lat.deg = atoi(lat_d);
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dp->lat.min = atoi(lat_m);
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dp->lat.sec = atoi(lat_s);
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dp->lat.cardinal = line[14] == NORTH ? NORTH : SOUTH;
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dp->lon.deg = atoi(lon_d);
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dp->lon.min = atoi(lon_m);
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dp->lon.sec = atoi(lon_s);
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dp->lon.cardinal = line[23] == EAST ? EAST : WEST;
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printf("%s", line);
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printf("Data point: %d:%d:%d | %d°%d'%d\"%c %d°%d'%d\"%c\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);
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// Debug
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exit(0);
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break;
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default:
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break;
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}
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}
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}
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int main(int argc, char* argv[])
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{
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if (argc < 2)
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{
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printf("Usage: %s <file>\n", argv[0]);
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return -EINVAL;
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}
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char filename[NAME_MAX] = {0};
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strncpy(filename, argv[1], NAME_MAX-1);
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FILE* fp = fopen(filename, "r");
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if (!fp)
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{
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printf("Couldn't open file %s\n", filename);
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return -EINVAL;
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}
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parse_igc_file(fp);
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return EXIT_SUCCESS;
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}
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