From 4cf5f31c257c79b38ed756d024fada284bab5367 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sat, 19 Mar 2022 11:33:58 -0400
Subject: main: Populate day of week in "now" time

Needed for format listing.
---
(limited to 'src')

diff --git a/src/main.c b/src/main.c
index 636fede..ff6c15c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -91,37 +91,43 @@ _print_help(const char *program_name)
 #endif
 }
 
-static bool
-_set_now(struct tm *tm, char buf[])
+static struct tm *
+_set_now(char buf[])
 {
-	char *endptr;
+	struct tm  tm;
+	char      *endptr;
+	time_t     t;
+	struct tm *tm_p;
 
 	if (strlen(buf) != 19) {
-		return false;
+		return NULL;
 	}
 	if (buf[4] != '-' || buf[7] != '-' || buf[10] != ' ' ||
 			buf[13] != ':' || buf[16] != ':') {
-		return false;
+		return NULL;
 	}
 	buf[4] = '\0', buf[7] = '\0', buf[10] = '\0';
 	buf[13] = '\0', buf[16] = '\0';
-	tm->tm_sec   = strtol(buf + 17, &endptr, 10);
-	if (endptr[0] != '\0') { return false; }
-	tm->tm_min   = strtol(buf + 14, &endptr, 10);
-	if (endptr[0] != '\0') { return false; }
-	tm->tm_hour  = strtol(buf + 11, &endptr, 10);
-	if (endptr[0] != '\0') { return false; }
-	tm->tm_mday  = strtol(buf +  8, &endptr, 10);
-	if (endptr[0] != '\0') { return false; }
-	tm->tm_mon   = strtol(buf +  5, &endptr, 10) -    1;
-	if (endptr[0] != '\0') { return false; }
-	tm->tm_year  = strtol(buf +  0, &endptr, 10) - 1900;
-	if (endptr[0] != '\0') { return false; }
-	tm->tm_wday  = -1;
-	tm->tm_yday  = -1;
-	tm->tm_isdst = -1;
+	tm.tm_sec   = strtol(buf + 17, &endptr, 10);
+	if (endptr[0] != '\0') { return NULL; }
+	tm.tm_min   = strtol(buf + 14, &endptr, 10);
+	if (endptr[0] != '\0') { return NULL; }
+	tm.tm_hour  = strtol(buf + 11, &endptr, 10);
+	if (endptr[0] != '\0') { return NULL; }
+	tm.tm_mday  = strtol(buf +  8, &endptr, 10);
+	if (endptr[0] != '\0') { return NULL; }
+	tm.tm_mon   = strtol(buf +  5, &endptr, 10) -    1;
+	if (endptr[0] != '\0') { return NULL; }
+	tm.tm_year  = strtol(buf +  0, &endptr, 10) - 1900;
+	if (endptr[0] != '\0') { return NULL; }
+	tm.tm_wday  = -1;
+	tm.tm_yday  = -1;
+	tm.tm_isdst = -1;
+
+	t = mktime(&tm);
+	tm_p = localtime(&t);
 
-	return true;
+	return tm_p;
 }
 
 static void
@@ -211,11 +217,10 @@ main(int argc, char * const argv[])
 {
 	bool       dbg;
 	bool       fmt;
-	struct tm  now_tm;
 	int        opt;
 	char      *buf;
 	time_t     now;
-	struct tm *now_tm_p;
+	struct tm *now_tm;
 	time_t     arg;
 	double     dif;
 
@@ -240,10 +245,10 @@ main(int argc, char * const argv[])
 				return EXIT_SUCCESS;
 			case 'd':
 				dbg = true;
-				if (_set_now(&now_tm, optarg) == false) {
+				now_tm = _set_now(optarg);
+				if (now_tm == NULL) {
 					return EXIT_FAILURE;
 				}
-				now_tm_p = &now_tm;
 				break;
 			default:
 				_print_usage(stderr, argv[0]);
@@ -262,11 +267,11 @@ main(int argc, char * const argv[])
 
 	if (dbg == false) {
 		now = time(NULL);
-		now_tm_p = localtime(&now);
+		now_tm = localtime(&now);
 	}
 
 	if (fmt == true) {
-		_list_formats(now_tm_p);
+		_list_formats(now_tm);
 		return EXIT_SUCCESS;
 	}
 
@@ -275,7 +280,7 @@ main(int argc, char * const argv[])
 		return EXIT_FAILURE;
 	}
 
-	if (datetime_parse(now_tm_p, buf, &arg) < 0) {
+	if (datetime_parse(now_tm, buf, &arg) < 0) {
 		free(buf);
 		return EXIT_FAILURE;
 	}
--
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