Merge pull request #3787 from gschlager/locale-keys

FIX: Some strings in locale files were not translatable

lib/locale_file_walker.rb

@@ -0,0 +1,48 @@
+require 'psych'
+
+class LocaleFileWalker
+  protected
+
+  def handle_document(document)
+    # we want to ignore the language (first key), so let's start at -1
+    handle_nodes(document.root.children, -1, [])
+  end
+
+  def handle_nodes(nodes, depth, parents)
+    if nodes
+      consecutive_scalars = 0
+      nodes.each do |node|
+        consecutive_scalars = handle_node(node, depth, parents, consecutive_scalars)
+      end
+    end
+  end
+
+  def handle_node(node, depth, parents, consecutive_scalars)
+    node_is_scalar = node.is_a?(Psych::Nodes::Scalar)
+
+    if node_is_scalar
+      handle_scalar(node, depth, parents) if valid_scalar?(depth, consecutive_scalars)
+    elsif node.is_a?(Psych::Nodes::Alias)
+      handle_alias(node, depth, parents)
+    elsif node.is_a?(Psych::Nodes::Mapping)
+      handle_mapping(node, depth, parents)
+      handle_nodes(node.children, depth + 1, parents.dup)
+    end
+
+    node_is_scalar ? consecutive_scalars + 1 : 0
+  end
+
+  def valid_scalar?(depth, consecutive_scalars)
+    depth >= 0 && consecutive_scalars.even?
+  end
+
+  def handle_scalar(node, depth, parents)
+    parents[depth] = node.value
+  end
+
+  def handle_alias(node, depth, parents)
+  end
+
+  def handle_mapping(node, depth, parents)
+  end
+end