lib/darkext/hash.rb in darkhelmet-darkext-0.5.3 vs lib/darkext/hash.rb in darkhelmet-darkext-0.5.4

@@ -6,6 +6,36 @@
 
   # Merges defaults with the hash (destructive)
   def with_defaults!(defaults)
     self.merge!(defaults) { |key,old,new| old.nil? ? new : old }
   end
+
+  def nested_find(*keys)
+    v = self
+    keys.each do |key|
+      v = v[key]
+      return nil if v.nil?
+    end
+    return v
+  end
+
+  # http://snippets.dzone.com/posts/show/4146
+  def deep_merge!(second)
+    # From: http://www.ruby-forum.com/topic/142809
+    # Author: Stefan Rusterholz
+    merger = proc { |key,v1,v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &merger) : v2 }
+    self.merge!(second, &merger)
+  end
+
+  def nested_hash(array)
+    node = self
+    array.each do |i|
+      node[i]=Hash.new if node[i].nil?
+      node = node[i]
+    end
+    self
+  end
+
+  def merge_nested_hash!(nested_hash)
+    deep_merge!(nested_hash)
+  end
 end