From 22cf75db16b1e8f4fc70ba3107a169ee16075c0a Mon Sep 17 00:00:00 2001
From: Davlet Panech <davlet.panech@windriver.com>
Date: Fri, 9 Sep 2022 10:37:59 -0400
Subject: [PATCH] Set BUILD_DATE to normalized $TIMESTAMP

Make sure BUILD_DATE field in the BUILD file reflects the actual
build timestamp, in a fixed format and UTC time zone.

Signed-off-by: Davlet Panech <davlet.panech@windriver.com>
Change-Id: Ia89f15aaecd1391514a8d11912c4e382a2ad565e
---
 scripts/configure-build.sh | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/scripts/configure-build.sh b/scripts/configure-build.sh
index 7130322..aa140d8 100755
--- a/scripts/configure-build.sh
+++ b/scripts/configure-build.sh
@@ -11,6 +11,29 @@ source $(dirname "$0")/lib/job_utils.sh
 
 load_build_env
 
+# Convert $TIMESTAMP to a string similar to
+#   2022-09-09 14:29:05 +0000
+# Accepts timestamps similar to:
+#   2022-09-08_18-00-07
+#   20220909T034458Z
+normalize_timestamp() {
+    local str="$1"
+    local norm
+                                    #      $1:yr       $2:mon      $3:day    $4         $5:hr       $6:min      $7:sec       $8:TZ
+    str="$(echo "$str" | sed -r 's/^\s*([0-9]{4})-?([0-9]{2})-?([0-9]{2})([T_-]|\s+)([0-9]{2})-?([0-9]{2})-?([0-9]{2})\s*([zZ]|([+-][0-9]{4}))?.*$/\1-\2-\3T\5:\6:\7\8/')"
+    str="$(echo "$str" | sed -r 's/([0-9])[zZ]$/\1+0000/')"
+    if ! echo "$str" | grep -q -E '[+-][0-9]{4}$' ; then
+        local tz_offset
+        tz_offset="$(date --date="$str" '+%z')" || return 1
+        str+="$tz_offset"
+    fi
+    date="$(date --date="$str" --utc +'%Y-%m-%d %H:%M:%S +0000')" || return 1
+    echo "$date"
+}
+
+build_date="$(normalize_timestamp "$TIMESTAMP")" || exit 1
+
+
 ######################################################
 # BUILD file
 ######################################################
@@ -38,7 +61,7 @@ JOB="$MASTER_JOB_NAME"
 BUILD_BY="$USER"
 BUILD_NUMBER="$MASTER_BUILD_NUMBER"
 BUILD_HOST="$HOSTNAME"
-BUILD_DATE="$(date '+%F %T %z')"
+BUILD_DATE="$build_date"
 _END
 
 notice "$build_info_file"