Support zero left-padding month/day in timestamps

git-svn-id: https://flot.googlecode.com/svn/trunk@236 1e0a6537-2640-0410-bfb7-f154510ff394

API.txt

@@ -404,6 +404,10 @@ specifiers are supported
   %p: am/pm, additionally switches %h/%H to 12 hour instead of 24
   %P: AM/PM (uppercase version of %p)
 
+Inserting a zero like %0m or %0d means that the specifier will be
+left-padded with a zero if it's only single-digit. So %y-%0m-%0d
+results in unambigious ISO timestamps like 2007-05-10 (for May 10th).
+
 You can customize the month names with the "monthNames" option. For
 instance, for Danish you might specify:
 

NEWS.txt

@@ -16,6 +16,8 @@ Changes:
 - Navigate plugin now redraws the plot while panning instead of only
   after the fact (can be disabled by setting the pan.frameRate option
   to null). Issue 235.
+- Date formatter now accepts %0m and %0d to get a zero-padded month or
+  day (issue raised by Maximillian Dornseif).
 
 
 Bug fixes:

jquery.flot.js

@@ -2090,7 +2090,7 @@
         };
         
         var r = [];
-        var escape = false;
+        var escape = false, padNext = false;
         var hours = d.getUTCHours();
         var isAM = hours < 12;
         if (monthNames == null)
@@ -2118,9 +2118,15 @@
                 case 'b': c = "" + monthNames[d.getUTCMonth()]; break;
                 case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
                 case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
+                case '0': c = ""; padNext = true; break;
+                }
+                if (c && padNext) {
+                    c = leftPad(c);
+                    padNext = false;
                 }
                 r.push(c);
-                escape = false;
+                if (!padNext)
+                    escape = false;
             }
             else {
                 if (c == "%")