renamed function parameter

src/date_time_handling.c

@@ -22,6 +22,10 @@ void get_date(char buffer[]) {
 
 // 20230823T194138 -> 2023-08-23 19:41:38
 void pretty_print_date_time(char date_time[]) {
+	// copy date_time because strtok will destroy it
+	char date_time_copy[15] = "";
+	strcpy(date_time_copy, date_time);
+
 	char *date = strtok(date_time, "T");
 	char *time = strtok(NULL, "T");
 	if (date == NULL) {
@@ -37,6 +41,9 @@ void pretty_print_date_time(char date_time[]) {
 		printf ("%c%c:", time[2], time[3]);
 		printf ("%c%c", time[4], time[5]);
 	}
+
+	// put variable date_time back together
+	strcpy(date_time, date_time_copy);
 }
 
 void marshall_date_time(char date_time[]) {

src/list_handling.c

@@ -46,10 +46,10 @@ void free_list(struct event *head)
     }
 }
 
-void print_upcoming(struct event *head, char current_start_date[], int show_all_events) {
+void print_upcoming(struct event *head, char current_date[], int show_all_events) {
 	int i = 0;
 	while (head != NULL) {
-		if (strcmp(head->start_date, current_start_date) >= 0) {
+		if (strcmp(head->start_date, current_date) >= 0) {
 			pretty_print_date_time(head->start_date);
 			print_end_date(head->end_date, head->start_date);
 			printf("\nSUMMARY: %s\n", head->summary);

unit-tests/Makefile

@@ -5,6 +5,12 @@ test_parse_ics_file:
 	$(CC) $(CFLAGS) test_parse_ics_file.c ../src/parse_ics.c ../src/string_handling.c ../src/list_handling.c ../src/date_time_handling.c ../src/read_until_string.c ../src/read_until_nl.c -o test_parse_ics_file.out
 	./test_parse_ics_file.out
 
+test_print_upcoming:
+	$(CC) $(CFLAGS) test_print_upcoming.c ../src/parse_ics.c ../src/string_handling.c ../src/list_handling.c ../src/date_time_handling.c ../src/read_until_string.c ../src/read_until_nl.c -o test_print_upcoming.out
+
+test_pretty_print_date_time:
+	$(CC) $(CFLAGS) test_pretty_print_date_time.c ../src/string_handling.c ../src/date_time_handling.c ../src/read_until_string.c ../src/read_until_nl.c -o test_pretty_print_date_time.out
+
 .PHONY:clean
 clean:
 	-rm -vf *.out

unit-tests/test_pretty_print_date_time.c

@@ -0,0 +1,14 @@
+#include "../src/date_time_handling.h"
+#include <stdio.h>
+
+int main() {
+	char current_date[] = "20240710T103000";
+
+	printf("current_date: %s\n", current_date);
+	printf("strlen(current_date): %ld\n\n", strlen(current_date));
+
+	pretty_print_date_time(current_date);
+
+	printf("\n\ncurrent_date: %s\n", current_date);
+	printf("strlen(current_date): %ld\n", strlen(current_date));
+}

unit-tests/test_print_upcoming.c

@@ -0,0 +1,16 @@
+#include "../src/list_handling.h"
+#include "../src/parse_ics.h"
+#include <stdio.h>
+
+int main() {
+	// initialize empty list
+	struct event *head = NULL;
+
+	char *current_date = "20240710T113000";
+
+	printf("DEBUG - current_date: %s\n\n", current_date);
+
+	parse_ics_file("/home/bf/.local/share/evolution/calendar/system/calendar.ics", &head);
+
+	print_upcoming(head, current_date, 0);
+}