1 files changed, 74 insertions, 0 deletions
diff --git a/Library/Homebrew/vendor/multi_json.rb b/Library/Homebrew/vendor/multi_json.rb
new file mode 100644
index 000000000..201265e70
--- /dev/null
+++ b/Library/Homebrew/vendor/multi_json.rb
@@ -0,0 +1,74 @@
+module MultiJson
+  class DecodeError < StandardError; end
+  module_function
+
+  @engine = nil
+
+  # Get the current engine class.
+  def engine
+    return @engine if @engine
+    self.engine = self.default_engine
+    @engine
+  end
+
+  REQUIREMENT_MAP = [
+    ["yajl", :yajl],
+    ["json", :json_gem],
+    ["json/pure", :json_pure]
+  ]
+
+  # The default engine based on what you currently
+  # have loaded and installed. First checks to see
+  # if any engines are already loaded, then checks
+  # to see which are installed if none are loaded.
+  def default_engine
+    return :yajl if defined?(::Yajl)
+    return :json_gem if defined?(::JSON)
+
+    REQUIREMENT_MAP.each do |(library, engine)|
+      begin
+        require library
+        return engine
+      rescue LoadError
+        next
+      end
+    end
+
+    :ok_json
+  end
+
+  # Set the JSON parser utilizing a symbol, string, or class.
+  # Supported by default are:
+  #
+  # * <tt>:json_gem</tt>
+  # * <tt>:json_pure</tt>
+  # * <tt>:ok_json</tt>
+  # * <tt>:yajl</tt>
+  def engine=(new_engine)
+    case new_engine
+    when String, Symbol
+      require "multi_json/engines/#{new_engine}"
+      @engine = MultiJson::Engines.const_get("#{new_engine.to_s.split('_').map{|s| s.capitalize}.join('')}")
+    when Class
+      @engine = new_engine
+    else
+      raise "Did not recognize your engine specification. Please specify either a symbol or a class."
+    end
+  end
+
+  # Decode a JSON string into Ruby.
+  #
+  # <b>Options</b>
+  #
+  # <tt>:symbolize_keys</tt> :: If true, will use symbols instead of strings for the keys.
+  def decode(string, options = {})
+    engine.decode(string, options)
+  rescue engine::ParseError => exception
+    raise DecodeError, exception.message, exception.backtrace
+  end
+
+  # Encodes a Ruby object as JSON.
+  def encode(object)
+    engine.encode(object)
+  end
+end