From 7d5bb275dbe5c80bcb743150b1ae4463bc708333 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Tue, 18 Jun 2019 10:45:59 -0400
Subject: ob_touch_t_gmtime(): New function

---
diff --git a/NEWS b/NEWS
index 0f86573..97e598c 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,10 @@ opkbuild version 4.1.1
 
 Released: ????-??-??
 
+libopkbuild:
+
+  * A new function ob_touch_t_gmtime() has been added.
+
 opkbuild version 4.1.0
 ----------------------
 
diff --git a/lib/time.sh b/lib/time.sh
index 95510e5..64843f5 100644
--- a/lib/time.sh
+++ b/lib/time.sh
@@ -190,3 +190,24 @@ ob_iso8601_gmtime()
 	printf '%04d-%02d-%02dT%02d:%02d:%02dZ' $(_ob_gmtime "${timep}")
 	return 0
 }
+
+## @brief Convert seconds since the Epoch into a date and time
+## @details \fBob_touch_t_gmtime\fP() converts the number of non-leap seconds
+##          elapsed since the Epoch into date and time in UTC formatted for the
+##          \fB-t\fP option of the \fBtouch\fP utility according to POSIX.  It
+##          is similar to the C function \fBgmtime\fP except that it returns a
+##          formatted string instead of a structure.
+## @operand timep req The number of non-leap seconds elapsed since the Epoch.
+## @return Returns 0.
+## @stdout Prints the date and time in UTC formatted for the \fBtouch\fP
+##         utility's \fB-t\fP option.
+## @pure yes This function has no side effects.
+ob_touch_t_gmtime()
+{
+	local timep="${1}"
+	shift 1 || _ob_abort
+
+	# [[CC]YY]MMDDhhmm[.SS]
+	printf '%04d%02d%02d%02d%02d.%02d' $(_ob_gmtime "${timep}")
+	return 0
+}
diff --git a/man/local.mk b/man/local.mk
index c04b83a..6e6d3a2 100644
--- a/man/local.mk
+++ b/man/local.mk
@@ -59,7 +59,8 @@ man3_MANS = \
 	%reldir%/ob_parse_dep.3 \
 	%reldir%/ob_reduce_deps.3 \
 	%reldir%/ob_rfc822_mktime.3 \
-	%reldir%/ob_iso8601_gmtime.3
+	%reldir%/ob_iso8601_gmtime.3 \
+	%reldir%/ob_touch_t_gmtime.3
 man7_sources = \
 	%reldir%/opkbuild.7in
 man7_MANS = $(man7_sources:.7in=.7)
--
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