Clear input/output paths if they exceed an arbitrary limit

CHANGELOG.md

@@ -25,6 +25,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
+* Clear input/output paths if they exceed an arbitrary limit  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#7362](https://github.com/CocoaPods/CocoaPods/issues/7362)
+
 * Warn instead of throwing an exception when a development pod specifies an invalid license file path  
   [Eric Amorde](https://github.com/amorde)
   [#7377](https://github.com/CocoaPods/CocoaPods/issues/7377)

lib/cocoapods/installer/user_project_integrator/target_integrator.rb

@@ -40,6 +40,10 @@ module Pod
         #
         COPY_PODS_RESOURCES_PHASE_NAME = 'Copy Pods Resources'.freeze
 
+        # @return [Integer] the maximum number of input and output paths to use for a script phase
+        #
+        MAX_INPUT_OUTPUT_PATHS = 1000
+
         # @return [AggregateTarget] the target that should be integrated.
         #
         attr_reader :target
@@ -183,6 +187,25 @@ module Pod
             end
           end
 
+          # Script phases can have a limited number of input and output paths due to each one being exported to `env`.
+          # A large number can cause a build failure because of limitations in `env`. See issue
+          # https://github.com/CocoaPods/CocoaPods/issues/7362.
+          #
+          # @param [Array<String>] input_paths
+          #        The input paths to trim.
+          #
+          # @param [Array<String>] output_paths
+          #        The output paths to trim.
+          #
+          # @return [void]
+          #
+          def validate_input_output_path_limit(input_paths, output_paths)
+            if (input_paths.count + output_paths.count) > MAX_INPUT_OUTPUT_PATHS
+              input_paths.clear
+              output_paths.clear
+            end
+          end
+
           # Returns an extension in the target that corresponds to the
           # resource's input extension.
           #
@@ -281,6 +304,7 @@ module Pod
                 File.join(base_path, File.basename(input_path, File.extname(input_path)) + output_extension)
               end.uniq
             end
+            TargetIntegrator.validate_input_output_path_limit(input_paths, output_paths)
             TargetIntegrator.create_or_update_copy_resources_script_phase_to_target(native_target, script_path, input_paths, output_paths)
           end
         end
@@ -314,6 +338,7 @@ module Pod
               input_paths = [target.embed_frameworks_script_relative_path, *framework_paths_by_config.map { |fw| [fw[:input_path], fw[:dsym_input_path]] }.flatten.compact]
               output_paths = framework_paths_by_config.map { |fw| [fw[:output_path], fw[:dsym_output_path]] }.flatten.compact.uniq
             end
+            TargetIntegrator.validate_input_output_path_limit(input_paths, output_paths)
             TargetIntegrator.create_or_update_embed_frameworks_script_phase_to_target(native_target, script_path, input_paths, output_paths)
           end
         end

lib/cocoapods/installer/xcode/pods_project_generator/pod_target_integrator.rb

@@ -64,6 +64,7 @@ module Pod
                 File.join(base_path, File.basename(input_path, File.extname(input_path)) + output_extension)
               end
             end
+            UserProjectIntegrator::TargetIntegrator.validate_input_output_path_limit(input_paths, output_paths)
             UserProjectIntegrator::TargetIntegrator.create_or_update_copy_resources_script_phase_to_target(native_target, script_path, input_paths, output_paths)
           end
 
@@ -81,6 +82,7 @@ module Pod
               input_paths = [script_path, *framework_paths.map { |fw| [fw[:input_path], fw[:dsym_input_path]] }.flatten.compact]
               output_paths = framework_paths.map { |fw| [fw[:output_path], fw[:dsym_output_path]] }.flatten.compact
             end
+            UserProjectIntegrator::TargetIntegrator.validate_input_output_path_limit(input_paths, output_paths)
             UserProjectIntegrator::TargetIntegrator.create_or_update_embed_frameworks_script_phase_to_target(native_target, script_path, input_paths, output_paths)
           end
 

spec/unit/installer/user_project_integrator/target_integrator_spec.rb

@@ -299,6 +299,23 @@ module Pod
           phase.output_paths.should.be.empty
         end
 
+        it 'clears input and output paths from script phase if it exceeds limit' do
+          # The paths represented here will be 501 for input paths and 501 for output paths which will exceed the limit.
+          paths = (0..500).map do |i|
+            "${PODS_CONFIGURATION_BUILD_DIR}/DebugLib/DebugLibPng#{i}.png"
+          end
+          resource_paths_by_config = {
+            'Debug' => [paths],
+            'Release' => [paths],
+          }
+          @pod_bundle.stubs(:resource_paths_by_config => resource_paths_by_config)
+          @target_integrator.integrate!
+          target = @target_integrator.send(:native_targets).first
+          phase = target.shell_script_build_phases.find { |bp| bp.name == @copy_pods_resources_phase_name }
+          phase.input_paths.should == []
+          phase.output_paths.should == []
+        end
+
         it 'adds copy pods resources input and output paths' do
           resource_paths_by_config = {
             'Debug' => [

spec/unit/installer/xcode/pods_project_generator/pod_target_integrator_spec.rb

@@ -30,6 +30,21 @@ module Pod
                 @test_native_target.build_phases[1].shell_script.should == "\"${PODS_ROOT}/Target Support Files/CoconutLib/CoconutLib-Unit-Tests-resources.sh\"\n"
               end
 
+              it 'clears input and output paths from script phase if it exceeds limit' do
+                # The paths represented here will be 501 for input paths and 501 for output paths which will exceed the limit.
+                resource_paths = (0..500).map do |i|
+                  "${PODS_CONFIGURATION_BUILD_DIR}/DebugLib/DebugLibPng#{i}.png"
+                end
+                @coconut_pod_target.stubs(:resource_paths).returns(resource_paths)
+                PodTargetIntegrator.new(@coconut_pod_target).integrate!
+                @test_native_target.build_phases.map(&:display_name).should == [
+                  '[CP] Embed Pods Frameworks',
+                  '[CP] Copy Pods Resources',
+                ]
+                @test_native_target.build_phases[1].input_paths.should == []
+                @test_native_target.build_phases[1].output_paths.should == []
+              end
+
               it 'integrates test native targets with frameworks and resources script phase input and output paths' do
                 framework_paths = { :name => 'Vendored.framework', :input_path => '${PODS_ROOT}/Vendored/Vendored.framework', :output_path => '${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Vendored.framework' }
                 resource_paths = ['${PODS_CONFIGURATION_BUILD_DIR}/TestResourceBundle.bundle']