Add project_header_files DSL to specifications.

Author: dnkoutso

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 ##### Enhancements
 
+* Add `project_header_files` DSL to specifications.  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#692](https://github.com/CocoaPods/Core/pull/692)
+
 * Add support for `on_demand_resources` DSL.  
   [JunyiXie](https://github.com/JunyiXie)
   [Dimitris Koutsogiorgas](https://github.com/dnkoutso)

lib/cocoapods-core/specification/consumer.rb

@@ -168,6 +168,10 @@ def user_target_xcconfig
       #
       spec_attr_accessor :public_header_files
 
+      # @return [Array<String>] the project headers of the Pod.
+      #
+      spec_attr_accessor :project_header_files
+
       # @return [Array<String>] the private headers of the Pod.
       #
       spec_attr_accessor :private_header_files

lib/cocoapods-core/specification/dsl.rb

@@ -1259,6 +1259,32 @@ def dependency=(args)
 
       #------------------#
 
+      # @!method project_header_files=(project_header_files)
+      #
+      #   A list of file patterns that should be used to mark project headers.
+      #
+      #   ---
+      #
+      #   These patterns are matched against the public headers (or all the
+      #   headers if no public headers have been specified) to exclude those
+      #   headers which should not be exposed to the user project and which
+      #   should not be used to generate the documentation. When the library
+      #   is built, these headers will _not_ appear in the build directory.
+      #
+      #
+      #   @example
+      #
+      #     spec.project_header_files = 'Headers/Project/*.h'
+      #
+      #   @param  [String, Array<String>] project_header_files
+      #           the project headers of the Pod.
+      #
+      attribute :project_header_files,
+                :container => Array,
+                :file_patterns => true
+
+      #------------------#
+
       # @!method private_header_files=(private_header_files)
       #
       #   A list of file patterns that should be used to mark private headers.

spec/specification/consumer_spec.rb

@@ -435,7 +435,12 @@ module Pod
         @consumer.public_header_files.should == ['include/**/*']
       end
 
-      it 'returns the public headers files' do
+      it 'returns the project headers files' do
+        @spec.project_header_files = ['project/**/*']
+        @consumer.project_header_files.should == ['project/**/*']
+      end
+
+      it 'returns the private headers files' do
         @spec.private_header_files = ['private/**/*']
         @consumer.private_header_files.should == ['private/**/*']
       end

spec/specification/dsl_spec.rb

@@ -415,6 +415,11 @@ module Pod
         @spec.attributes_hash['public_header_files'].should == ['include/**/*']
       end
 
+      it 'allows to specify the project headers files' do
+        @spec.project_header_files = ['project/**/*']
+        @spec.attributes_hash['project_header_files'].should == ['project/**/*']
+      end
+
       it 'allows to specify the private headers files' do
         @spec.private_header_files = ['private/**/*']
         @spec.attributes_hash['private_header_files'].should == ['private/**/*']