-Util.formatDate = function(date_ms) {
- var zeropad = function(x) { if (x < 10) return "0" + x; else return "" + x; };
- var d = new Date(date_ms);
-
- // Get the year:
- var year = "" + d.getFullYear();
- // Get a 0 padded month string
- var month = zeropad(d.getMonth() + 1); //months are 0-offset, sigh
- // Get a 0 padded day string
- var day = zeropad(d.getDate());
-
- return year + "/" + month + "/" + day;
+Util.formatDate = function(dateMillis) {
+ return Dygraph.dateString_(dateMillis).slice(0, 10); // 10 == "YYYY/MM/DD".length
+};
+
+/**
+ * Capture console.{log,warn,error} statements into obj.
+ * obj will look like {log:[], warn:[], error:[]}
+ * This returns a function which will restore the original console.
+ */
+Util.captureConsole = function(obj) {
+ obj.log = [];
+ obj.warn = [];
+ obj.error = [];
+ var orig = [console.log, console.warn, console.error];
+ console.log = function(text) { obj.log.push(text); };
+ console.warn = function(text) { obj.warn.push(text); };
+ console.error = function(text) { obj.error.push(text); };
+
+ return function() {
+ console.log = orig[0];
+ console.warn = orig[1];
+ console.error = orig[2];
+ };