added format function to common.js

apiaryio · Jul 23, 2012 · 3998d19 · 3998d19
1 parent 6c83657
commit 3998d19
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/lib/winston/common.js b/lib/winston/common.js
@@ -257,3 +257,22 @@ exports.serialize = function (obj, key) {
 
   return msg;
 };
+
+//
+// ### function format (arr)
+// #### @arr {Array} The array that contains all parts of the message
+// similar to util.format
+// returns the formated string
+// uses the original array and removes items as it proceeds
+//
+exports.format = function (arr) {
+  return arr.shift().replace(/%[sdj%]/g, function (x){
+    switch (x.charAt(1)) {
+      case "j": return JSON.stringify(arr.shift());
+      case "s": return String(arr.shift());
+      case "d": return Number(arr.shift());
+      case "%": return "%";
+      default:  return x;
+    }
+  });
+};