introduced function to check if a given date lies in the future

Signed-off-by: Florian Katerndahl <florian@katerndahl.com>
Florian-Katerndahl · Aug 2, 2021 · f86c985 · f86c985
1 parent c777926
commit f86c985
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diff --git a/src/cross-level/datesys-cl.c b/src/cross-level/datesys-cl.c
@@ -131,3 +131,13 @@ struct tm *timeinfo;
   return;
 }
 
+int date_overshoot(date_t *d){
+	date_t today;
+	current_date(&today);
+
+	if (d->doy > today.doy && d->year > today.year) {
+		return 1;
+	} else {
+		return 0;
+	}
+}
diff --git a/src/cross-level/datesys-cl.h b/src/cross-level/datesys-cl.h
@@ -43,6 +43,7 @@ extern "C" {
 void current_date(date_t *d);
 void date_plus(date_t *d);
 void date_minus(date_t *d);
+int date_overshoot(date_t *d);
 
 #ifdef __cplusplus
 }

diff --git a/src/lower-level/_lut-modis.c b/src/lower-level/_lut-modis.c
@@ -122,6 +122,10 @@ int opt;
         strncpy(cm, optarg+13, 2); cm[2] = '\0';
         strncpy(cd, optarg+15, 2); cd[2] = '\0';
         set_date(&args->date_end, atoi(cy), atoi(cm), atoi(cd));
+        if (date_overshoot(&args->date_start) || date_overshoot(&args->date_end)) {
+        	fprintf(stderr, "start or end date exceed current date\n");
+        	usage(argv[0], FAILURE);
+        }
         break;
       case 't':
         if (strcmp(optarg, "true") == 0){