From 1ac209036249e18ebb9cb42d3afeebdd14d5eed1 Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@verplant.org>
Date: Wed, 23 Dec 2009 17:37:59 +0100
Subject: [PATCH] src/ros_parse.[ch]: Added functions to parse the uptime
 string into seconds.

---
 src/ros_parse.c | 29 +++++++++++++++++++++++++++++
 src/ros_parse.h |  3 +++
 2 files changed, 32 insertions(+)

diff --git a/src/ros_parse.c b/src/ros_parse.c
index b9d7e99..95126ef 100644
--- a/src/ros_parse.c
+++ b/src/ros_parse.c
@@ -145,4 +145,33 @@ int sstrto_rx_tx_counters (const char *str, /* {{{ */
 	return (0);
 } /* }}} int sstrto_rx_tx_counters */
 
+/* have_hour is initially set to false and later set to true when the first
+ * colon is found. It is used to determine whether the number before the colon
+ * is hours or minutes. External code should use the sstrtodate() macro. */
+uint64_t _sstrtodate (const char *str, _Bool have_hour) /* {{{ */
+{
+	uint64_t ret;
+	char *endptr;
+
+	if ((str == NULL) || (*str == 0))
+		return (0);
+
+	/* Example string: 6w6d18:33:07 */
+	errno = 0;
+	endptr = NULL;
+	ret = (uint64_t) strtoull (str, &endptr, /* base = */ 10);
+	if ((endptr == str) || (errno != 0))
+		return (0);
+
+	switch (*endptr)
+	{
+		case 'y': ret *= 365 * 86400; break;
+		case 'w': ret *=   7 * 86400; break;
+		case 'd': ret *=       86400; break;
+		case ':': ret *= have_hour ? 60 : 3600; have_hour = true; break;
+	}
+
+	return (ret + _sstrtodate (endptr + 1, have_hour));
+} /* }}} uint64_t _sstrtodate */
+
 /* vim: set ts=2 sw=2 noet fdm=marker : */
diff --git a/src/ros_parse.h b/src/ros_parse.h
index a39ac89..75473a4 100644
--- a/src/ros_parse.h
+++ b/src/ros_parse.h
@@ -31,6 +31,9 @@ double sstrtod (const char *str);
 
 int sstrto_rx_tx_counters (const char *str, uint64_t *rx, uint64_t *tx);
 
+uint64_t _sstrtodate (const char *str, _Bool have_hour);
+#define sstrtodate(str) _sstrtodate((str), 0)
+
 #endif /* ROS_PARSE_H */
 
 /* vim: set ts=2 sw=2 noet fdm=marker : */
-- 
2.11.0