[Config] Make #to_hash include import statements

CHANGELOG.md

@@ -8,7 +8,9 @@
 
 ##### Bug Fixes
 
-* None.  
+* [Config] Make #to_bash include import statements  
+  [Ruenzuo](https://github.com/Ruenzuo)
+  [#505](https://github.com/CocoaPods/Xcodeproj/issues/505)
 
 
 ## 1.5.2 (2017-09-24)
@@ -17,7 +19,7 @@
 
 * Resolve variable substitution for xcconfig declared build settings
   [Ruenzuo](https://github.com/Ruenzuo)
-  [#501](https://github.com/CocoaPods/CocoaPods/issues/501)
+  [#501](https://github.com/CocoaPods/Xcodeproj/issues/501)
 
 ##### Bug Fixes
 

lib/xcodeproj/config.rb

@@ -134,6 +134,15 @@ def to_hash(prefix = nil)
       inherited = %w($(inherited) ${inherited}).freeze
       result.reject! { |_, v| inherited.any? { |i| i == v.to_s.strip } }
 
+      result = @includes.map do |incl|
+        path = File.expand_path(incl, @filepath.dirname)
+        if File.readable? path
+          Xcodeproj::Config.new(path).to_hash
+        else
+          {}
+        end
+      end.inject(&:merge).merge(result) unless @filepath.nil? || @includes.empty?
+
       if prefix
         Hash[result.map { |k, v| [prefix + k, v] }]
       else
@@ -237,8 +246,10 @@ def dup
     #
     def extract_hash(argument)
       if argument.respond_to? :read
+        @filepath = Pathname.new(argument.to_path)
         hash_from_file_content(argument.read)
       elsif File.readable?(argument.to_s)
+        @filepath = Pathname.new(argument.to_s)
         hash_from_file_content(File.read(argument))
       else
         argument

spec/config_spec.rb

@@ -8,6 +8,7 @@
       @hash = { 'OTHER_LDFLAGS' => '-framework "Foundation"' }
       @config = Xcodeproj::Config.new(@hash)
       @config_fixture = fixture_path('oneline-key-value.xcconfig')
+      @config_with_include_fixture = fixture_path('config-with-include.xcconfig')
     end
 
     it 'can be created with hash' do
@@ -286,6 +287,18 @@ def filename.open(mode)
       config.merge!('OTHER_LDFLAGS' => '-l"Pods-Intercom"')
       config.to_hash['OTHER_LDFLAGS'].should == '-ObjC -l"Pods-GoogleAnalytics-iOS-SDK" -l"Pods-Intercom" -force_load $(PODS_ROOT)/Intercom/Intercom/libIntercom.a'
     end
+
+    it 'processes include statements if initialized with filepath' do
+      xcconfig_file = File.new(@config_with_include_fixture)
+      xcconfig = Xcodeproj::Config.new(xcconfig_file)
+      xcconfig.to_hash.should == {
+        'FIRST_BUILD_SETTING' => 'YES',
+        'SECOND_BUILD_SETTING' => 'YES',
+        'THIRD_BUILD_SETTING' => 'YES',
+        'A_BUILD_SETTING' => 'OVERRIDE',
+        'ANOTHER_BUILD_SETTING' => 'SHOULD_PRECEDE',
+      }
+    end
   end
 
   #---------------------------------------------------------------------------#

spec/fixtures/another-config-with-include.xcconfig

@@ -0,0 +1,5 @@
+#include "config-without-include.xcconfig"
+
+SECOND_BUILD_SETTING = YES
+A_BUILD_SETTING = THIS_VALUE_SHOULD_BE_OVERRIDEN
+ANOTHER_BUILD_SETTING = SHOULD_PRECEDE

spec/fixtures/config-with-include.xcconfig

@@ -0,0 +1,4 @@
+#include "another-config-with-include.xcconfig"
+
+FIRST_BUILD_SETTING = YES
+A_BUILD_SETTING = OVERRIDE

spec/fixtures/config-without-include.xcconfig

@@ -0,0 +1,2 @@
+THIRD_BUILD_SETTING = YES
+ANOTHER_BUILD_SETTING = SHOULD_NOT_TAKE_PRECEDENCE