lib/cocoa/sugarcube-attributedstring/nsattributedstring.rb in sugarcube-3.0.6 vs lib/cocoa/sugarcube-attributedstring/nsattributedstring.rb in sugarcube-3.0.7

@@ -109,9 +109,31 @@
     string = NSMutableAttributedString.alloc.initWithAttributedString(self)
     string.appendAttributedString(attributedstring.nsattributedstring)
     string
   end
 
+  def empty?
+    self.length == 0
+  end
+
+  def strip
+    # Trim leading whitespace and newlines.
+    charSet = NSCharacterSet.whitespaceAndNewlineCharacterSet
+    range = self.string.rangeOfCharacterFromSet(charSet)
+    while (range.length != 0 && range.location == 0)
+      self.replaceCharactersInRange(range, withString:"")
+      range = self.string.rangeOfCharacterFromSet(charSet)
+    end
+
+    # Trim trailing whitespace and newlines.
+    range = self.string.rangeOfCharacterFromSet(charSet, options:NSBackwardsSearch)
+    while (range.length != 0 && NSMaxRange(range) == self.length)
+      self.replaceCharactersInRange(range, withString:"")
+      range = self.string.rangeOfCharacterFromSet(charSet, options:NSBackwardsSearch)
+    end
+    self
+  end
+
 end
 
 
 class NSMutableAttributedString