Introduce deep_merge

Allows data files to make incremental changes without overwriting everything.

Gemfile

@@ -5,7 +5,8 @@ gem 'sinatra'
 gem 'sinatra-contrib'
 gem 'prawn', '2.2.2'
 gem 'prawn-templates', '0.1.1'
+gem 'deep_merge', '~> 1.2', '>= 1.2.1'
 
 group :development do
   gem 'rerun'
-end
+end

Gemfile.lock

@@ -5,6 +5,7 @@ GEM
     afm (0.2.2)
     backports (3.15.0)
     daemons (1.3.1)
+    deep_merge (1.2.2)
     eventmachine (1.2.7)
     ffi (1.11.1)
     hashery (2.1.2)
@@ -60,6 +61,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  deep_merge (~> 1.2, >= 1.2.1)
   prawn (= 2.2.2)
   prawn-templates (= 0.1.1)
   rerun

src/lib/data.rb

@@ -1,3 +1,5 @@
+require 'deep_merge'
+
 require_relative 'data/gold'
 require_relative 'data/wizard'
 require_relative 'data/dark_elf'
@@ -45,14 +47,6 @@ module Charred
       end
     end
 
-    def put_or_merge(dict, key, value)
-      if(dict[key])
-        verbose_merge dict[key], value
-      else
-        dict[key] = value
-      end
-    end
-
     def lifepath_requirements(expr)
       if expr.is_a? Numeric
         []

src/lib/data/custom.rb

@@ -12,13 +12,13 @@ module Charred
             verbose_merge data[:traits], json_get(file)
           when ".stock"
             stock = Stock.new(json_get(file))
-            put_or_merge data[:stocks], stock.key, stock
+            data[:stocks].deep_merge!({ stock.key => stock })
           when ".lifepaths"
             contents = json_get(file)
-            put_or_merge data[:lifepaths], contents["stock"], contents["settings"]
+            data[:lifepaths].deep_merge!({ contents["stock"] => contents["settings"]})
           when ".resources"
             contents = json_get(file)
-            put_or_merge data[:resources], contents["stock"], contents["resources"]
+            data[:resources].deep_merge!({ contents["stock"] => contents["resources"]})
           end
         end
       }