From 0c0066919ede9a3ab03a35bea3df22a156747629 Mon Sep 17 00:00:00 2001
From: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Mon, 5 Oct 2015 00:01:28 +0200
Subject: sfeed_mbox: do host lookup and current time once at startup, not per
 feed

---
 sfeed_mbox.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/sfeed_mbox.c b/sfeed_mbox.c
index 6b14786..96ec02e 100644
--- a/sfeed_mbox.c
+++ b/sfeed_mbox.c
@@ -13,6 +13,7 @@
 
 static char *line;
 static size_t linesize;
+static char host[256], *user, mtimebuf[32];
 
 /* jenkins one-at-a-time hash, used for Message-Id */
 static uint32_t
@@ -76,22 +77,9 @@ static void
 printfeed(FILE *fp, const char *feedname)
 {
 	struct tm tm;
-	char *fields[FieldLast], timebuf[32], mtimebuf[32];
-	char host[256], *user;
+	char *fields[FieldLast], timebuf[32];
 	time_t parsedtime;
 
-	if (!(user = getenv("USER")))
-		user = "you";
-	if (gethostname(host, sizeof(host)) == -1)
-		err(1, "gethostname");
-
-	if ((parsedtime = time(NULL)) == -1)
-		err(1, "time");
-	if (!gmtime_r(&parsedtime, &tm))
-		errx(1, "gmtime_r: can't get current time");
-	if (!strftime(mtimebuf, sizeof(mtimebuf), "%a %b %d %H:%M:%S %Y", &tm))
-		errx(1, "strftime: can't format current time");
-
 	while (parseline(&line, &linesize, fields, fp) > 0) {
 		parsedtime = 0;
 		strtotime(fields[FieldUnixTimestamp], &parsedtime);
@@ -140,10 +128,23 @@ printfeed(FILE *fp, const char *feedname)
 int
 main(int argc, char *argv[])
 {
+	struct tm tm;
+	time_t t;
 	FILE *fp;
 	char *name;
 	int i;
 
+	if (!(user = getenv("USER")))
+		user = "you";
+	if (gethostname(host, sizeof(host)) == -1)
+		err(1, "gethostname");
+	if ((t = time(NULL)) == -1)
+		err(1, "time");
+	if (!gmtime_r(&t, &tm))
+		errx(1, "gmtime_r: can't get current time");
+	if (!strftime(mtimebuf, sizeof(mtimebuf), "%a %b %d %H:%M:%S %Y", &tm))
+		errx(1, "strftime: can't format current time");
+
 	if (argc == 1) {
 		printfeed(stdin, "");
 	} else {
-- 
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