Add the sh/bash configuration file format.

lib/poise_file/resources/poise_file.rb

@@ -89,6 +89,8 @@ def default_format
           # have string content, it's just raw content by default.
           return 'text' if pattern || content.is_a?(String)
           case path
+          when /\.(ba)?sh$/
+            'sh'
           when /\.json$/
             'json'
           when /\.ya?ml$/
@@ -209,6 +211,20 @@ def content_for_pattern
         # @return [String]
         def content_for_format
           case @new_resource.format.to_s
+          when 'sh'
+            prefix = []
+            serializer = lambda do |(key, value)|
+              if value.kind_of? Hash
+                prefix.push(key)
+                r = value.map(&serializer)
+                prefix.pop
+                r
+              else
+                identifier = [prefix, key].flatten.compact.map(&:upcase).join('_')
+                "export #{identifier}=\"#{value}\""
+              end
+            end
+            @new_resource.content.to_hash.map(&serializer).join("\n")
           when 'json'
             require 'chef/json_compat'
             # Make sure we include the trailing newline because YAML has one.

test/spec/resources/poise_file_spec.rb

@@ -41,6 +41,26 @@
   end
 
   describe 'formats' do
+    context 'with a .sh path' do
+      recipe(subject: false) do
+        poise_file "#{node['temp_path']}/test.sh" do
+          content foo: 'bar', bar: { baz: 'qux', quux: 'quuz' }
+        end
+      end
+
+      its(['test.sh']) { is_expected.to eq %Q(export FOO="bar"\nexport BAR_BAZ="qux"\nexport BAR_QUUX="quuz") }
+    end # /context with a .sh path
+
+    context 'with a .bash path' do
+      recipe(subject: false) do
+        poise_file "#{node['temp_path']}/test.bash" do
+          content foo: 'bar', bar: { baz: 'qux', quux: 'quuz' }
+        end
+      end
+
+      its(['test.bash']) { is_expected.to eq %Q(export FOO="bar"\nexport BAR_BAZ="qux"\nexport BAR_QUUX="quuz") }
+    end # /context with a .bash path
+
     context 'with a .json path' do
       recipe(subject: false) do
         poise_file "#{node['temp_path']}/test.json" do