dp doubly linked list

main.c

@@ -0,0 +1,45 @@
+/*
+ * IGC parser
+ * @brief parse IGC file, get all data points, compute average horizontal/vertical speed, print to STDOUT
+ *
+ * As per standard: https://xp-soaring.github.io/igc_file_format/igc_format_2008.html
+ *                  https://xp-soaring.github.io/igc_file_format/igc_fr_specification_with_al8_2023-2-1_0.pdf
+ *
+ * @author xamidev <xamidev@riseup.net>
+ * @license GNU GPL v3
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "igc.h"
+#include "linkage.h"
+
+int main(int argc, char* argv[])
+{
+	if (argc < 2)
+	{
+		printf("Usage: %s <file>\n", argv[0]);
+		return -EINVAL;
+	}
+
+	char filename[NAME_MAX] = {0};
+	strncpy(filename, argv[1], NAME_MAX-1);
+
+	FILE* fp = fopen(filename, "r");
+
+	if (!fp)
+	{
+		printf("Couldn't open file %s\n", filename);
+		return -EINVAL;
+	}	
+
+	struct dp_node* head = create_datapoint_list(); 
+	struct IGC_Header* hdr = (struct IGC_Header*)calloc(1, sizeof(struct IGC_Header));
+	parse_igc_file(fp, hdr, head);
+
+	print_datapoint_list(head);
+
+	return EXIT_SUCCESS;
+}