From 200dc2ef5ec579137f58ff71fdcdcf9fde254458 Mon Sep 17 00:00:00 2001
From: Andrew Schaaf <andrew@andrewschaaf.com>
Date: Fri, 3 Jun 2011 07:51:43 -0400
Subject: [PATCH] add strftimeUTC

---
 lib/index.js | 34 +++++++++++++++++++++++++++++-----
 1 file changed, 29 insertions(+), 5 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index 3dccd72..4c481e5 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -33,7 +33,7 @@
     }
 
     // locale is an object with the same structure as DefaultLocale
-    function strftime(fmt, d, locale) {
+    function _strftime(fmt, d, locale, _useUTC) {
         // d and locale are optional so check if d is really the locale
         if (d && !(d instanceof Date)) {
             locale = d;
@@ -43,6 +43,10 @@
         locale = locale || DefaultLocale;
         locale.formats = locale.formats || {}
 
+        if (_useUTC) {
+            d = new Date(d.getTime() + ((d.getTimezoneOffset() || 0) * 60000));
+        }
+
         // Most of the specifiers supported by C's strftime
         return fmt.replace(/%(.)/g, function(_, c) {
             switch (c) {
@@ -79,16 +83,34 @@
                     var y = String(d.getFullYear());
                     return y.slice(y.length - 2);
                 case 'Z':
-                    var tz = d.toString().match(/\((\w+)\)/);
-                    return tz && tz[1] || '';
+                    if (_useUTC) {
+                        return "GMT";
+                    }
+                    else {
+                        var tz = d.toString().match(/\((\w+)\)/);
+                        return tz && tz[1] || '';
+                    }
                 case 'z':
-                    var off = d.getTimezoneOffset();
-                    return (off < 0 ? '-' : '+') + pad(off / 60) + pad(off % 60);
+                    if (_useUTC) {
+                        return "+0000";
+                    }
+                    else {
+                        var off = d.getTimezoneOffset();
+                        return (off < 0 ? '-' : '+') + pad(off / 60) + pad(off % 60);
+                    }
                 default: return c;
             }
         });
     }
 
+    function strftime(fmt, d, locale) {
+        return _strftime(fmt, d, locale, false);
+    }
+
+    function strftimeUTC(fmt, d, locale) {
+        return _strftime(fmt, d, locale, true);
+    }
+
     function getLocalizedStrftime(locale) {
         return function(fmt, d) {
             return strftime(fmt, d, locale);
@@ -97,10 +119,12 @@
 
     if (typeof exports !== 'undefined') {
         exports.strftime = strftime;
+        exports.strftimeUTC = strftimeUTC;
         exports.getLocalizedStrftime = getLocalizedStrftime;
     } else {
         (function(global) {
             global.strftime = strftime;
+            global.strftimeUTC = strftimeUTC;
             global.getLocalizedStrftime = getLocalizedStrftime;
         }(this));
     }