update podfile automatically

lib/anticuado/ios/cocoapods.rb

@@ -36,6 +36,24 @@ def self.format(outdated)
           end
         }.compact
       end
+
+      # @param [String] pod_file_in The file path to Podfile you'd like to update
+      # @param [String] pod_file_out The file path to new Podfile updated. Default is nil and then `pod_file_in` is used
+      #                   as the file path
+      # @param [Hash] library_name The library name you'd like to update
+      #                   [{library_name: "version"}]
+      # @return [Array] Array include outdated data.
+      #                 If target project have no outdated data, then return blank array such as `[]`
+      def self.update(pod_file_in:, pod_file_out: nil, library_name:, new:)
+        pod_file_out = pod_file_in if pod_file_out.nil?
+        current_pod = File.read(pod_file_in)
+
+        result = current_pod.each_line.reduce("") do |memo, line|
+          memo << ((line.strip.start_with?("pod ") && line.include?(library_name)) ? line.sub(/[0-9|.]+/, new) : line)
+        end
+
+        File.write(pod_file_out, result)
+      end
     end # class CocoaPods
   end # module IOS
 end # module Anticuado

test/anticuado/ios/cocoapod_actual

@@ -0,0 +1,9 @@
+pod 'AFNetworking', '~> 3.0'
+
+target 'Example' do
+  pod 'OHHTTPStubs', '~> 4.1.0'
+end
+
+target 'Example2' do
+  pod 'EarlGrey'
+end

test/anticuado/ios/cocoapod_expected1

@@ -0,0 +1,9 @@
+pod 'AFNetworking', '~> 4.0'
+
+target 'Example' do
+  pod 'OHHTTPStubs', '~> 4.1.0'
+end
+
+target 'Example2' do
+  pod 'EarlGrey'
+end

test/anticuado/ios/cocoapod_expected2

@@ -0,0 +1,9 @@
+pod 'AFNetworking', '~> 3.0'
+
+target 'Example' do
+  pod 'OHHTTPStubs', '~> 4.2.0'
+end
+
+target 'Example2' do
+  pod 'EarlGrey'
+end

test/anticuado/ios/cocoapods_test.rb

@@ -40,6 +40,35 @@ def test_with_format_no_update
         assert_equal expected, result
       end
 
+      def test_with_update_cocoapod
+        expected = File.read("test/anticuado/ios/cocoapod_expected1")
+
+        actual_file_path = "test/anticuado/ios/cocoapod_actual"
+        actual_output_file_path = "test/anticuado/ios/cocoapod_actual_out"
+
+        Anticuado::IOS::CocoaPods.update(pod_file_in: actual_file_path, pod_file_out: actual_output_file_path, library_name: "AFNetworking", new: "4.0")
+
+        actual = File.read(actual_output_file_path)
+
+        assert_equal expected, actual
+
+        File.delete(actual_output_file_path)
+      end
+
+      def test_with_update_cocoapod1
+        expected = File.read("test/anticuado/ios/cocoapod_expected2")
+
+        actual_file_path = "test/anticuado/ios/cocoapod_actual"
+        actual_output_file_path = "test/anticuado/ios/cocoapod_actual_out"
+
+        Anticuado::IOS::CocoaPods.update(pod_file_in: actual_file_path, pod_file_out: actual_output_file_path, library_name: "OHHTTPStubs", new: "4.2.0")
+
+        actual = File.read(actual_output_file_path)
+
+        assert_equal expected, actual
+
+        File.delete(actual_output_file_path)
+      end
     end
   end
-end
+end