#160 - Add option to set encoding of response body

lib/google/api_client.rb

@@ -31,6 +31,7 @@ require 'google/api_client/media'
 require 'google/api_client/service_account'
 require 'google/api_client/batch'
 require 'google/api_client/gzip'
+require 'google/api_client/charset'
 require 'google/api_client/client_secrets'
 require 'google/api_client/railtie' if defined?(Rails)
 
@@ -75,6 +76,9 @@ module Google
     # @option options [String] :ca_file
     #   Optional set of root certificates to use when validating SSL connections.
     #   By default, a bundled set of trusted roots will be used.
+    # @options options[Hash] :force_encoding
+    #   Experimental option. True if response body should be force encoded into the charset
+    #   specified in the Content-Type header. Mostly intended for compressed content.
     # @options options[Hash] :faraday_options
     #   Pass through of options to set on the Faraday connection
     def initialize(options={})
@@ -119,6 +123,7 @@ module Google
       @discovered_apis = {}
       ca_file = options[:ca_file] || File.expand_path('../../cacerts.pem', __FILE__)
       self.connection = Faraday.new do |faraday|
+        faraday.response :charset if options[:force_encoding]
         faraday.response :gzip
         faraday.options.params_encoder = Faraday::FlatParamsEncoder
         faraday.ssl.ca_file = ca_file
@@ -265,10 +270,12 @@ module Google
     # @param [String, Symbol] api The API name.
     # @param [String] version The desired version of the API.
     # @param [Addressable::URI] uri The URI of the discovery document.
+    # @return [Google::APIClient::API] The service object.
     def register_discovery_uri(api, version, uri)
       api = api.to_s
       version = version || 'v1'
       @discovery_uris["#{api}:#{version}"] = uri
+      discovered_api(api, version)
     end
 
     ##
@@ -297,6 +304,7 @@ module Google
     # @param [String] version The desired version of the API.
     # @param [String, StringIO] discovery_document
     #   The contents of the discovery document.
+    # @return [Google::APIClient::API] The service object.
     def register_discovery_document(api, version, discovery_document)
       api = api.to_s
       version = version || 'v1'
@@ -311,6 +319,7 @@ module Google
       end
       @discovery_documents["#{api}:#{version}"] =
         MultiJson.load(discovery_document)
+      discovered_api(api, version)
     end
 
     ##

lib/google/api_client/charset.rb

@@ -0,0 +1,33 @@
+require 'faraday'
+require 'zlib'
+ 
+module Google
+  class APIClient
+    class Charset < Faraday::Response::Middleware
+      include Google::APIClient::Logging
+
+      def charset_for_content_type(type)
+        if type
+          m = type.match(/(?:charset|encoding)="?([a-z0-9-]+)"?/i)
+          if m
+            return Encoding.find(m[1])
+          end
+        end
+        nil
+      end
+
+      def adjust_encoding(env)
+        charset = charset_for_content_type(env[:response_headers]['content-type'])
+        if charset && env[:body].encoding != charset
+          env[:body].force_encoding(charset)
+        end
+      end
+      
+      def on_complete(env)
+        adjust_encoding(env)
+      end
+    end
+  end
+end
+ 
+Faraday::Response.register_middleware :charset => Google::APIClient::Charset