Use moment to parse time

Closes #13032
(grafted from 1b77b079e942f554c4f074533e209a340e5afa80)

--HG--
branch : 7.0

sao/src/common.js

@@ -248,21 +248,14 @@
     };
 
     Sao.common.parse_time = function(format, value) {
-        if (!value) {
-            return null;
+        var date = moment(value, Sao.common.moment_format(format));
+        if (date.isValid()) {
+            date = Sao.Time(
+                date.hour(), date.minute(), date.second(), date.millisecond());
+        } else {
+            date = null;
         }
-        var getNumber = function(pattern) {
-            var i = format.indexOf(pattern);
-            if (~i) {
-                var number = parseInt(value.slice(i, i + pattern.length), 10);
-                if (!isNaN(number)) {
-                    return number;
-                }
-            }
-            return 0;
-        };
-        return Sao.Time(getNumber('%H'), getNumber('%M'), getNumber('%S'),
-                getNumber('%f'));
+        return date;
     };
 
     Sao.common.format_date = function(date_format, date) {

sao/tests/sao.js

@@ -1846,9 +1846,9 @@
         };
         [
         ['12:30:00', Sao.Time(12, 30, 0)],
-        ['test', Sao.Time(0, 0, 0)]
         ].forEach(test_valueOf_func, field);
         [
+        ['test', null],
         [null, null]
         ].forEach(test_func, field);