Merge pull request #447 from rzane/shell-indent

Add indent method to Thor::Shell::Basic

Author: sferik

lib/thor/shell/basic.rb

@@ -34,6 +34,15 @@ def padding=(value)
         @padding = [0, value].max
       end
 
+      # Sets the output padding while executing a block and resets it.
+      #
+      def indent(count = 1, &block)
+        orig_padding = padding
+        self.padding = padding + count
+        yield
+        self.padding = orig_padding
+      end
+
       # Asks something to the user and receives a response.
       #
       # If asked to limit the correct responses, you can pass in an

spec/shell/basic_spec.rb

@@ -16,6 +16,35 @@ def shell
     end
   end
 
+  describe "#indent" do
+    it "sets the padding temporarily" do
+      shell.indent { expect(shell.padding).to eq(1) }
+      expect(shell.padding).to eq(0)
+    end
+
+    it "derives padding from original value" do
+      shell.padding = 6
+      shell.indent { expect(shell.padding).to eq(7) }
+    end
+
+    it "accepts custom indentation amounts" do
+      shell.indent(6) {
+        expect(shell.padding).to eq(6)
+      }
+    end
+
+    it "increases the padding when nested" do
+      shell.indent {
+        expect(shell.padding).to eq(1)
+
+        shell.indent {
+          expect(shell.padding).to eq(2)
+        }
+      }
+      expect(shell.padding).to eq(0)
+    end
+  end
+
   describe "#ask" do
     it "prints a message to the user and gets the response" do
       expect(Thor::LineEditor).to receive(:readline).with("Should I overwrite it? ", {}).and_return("Sure")