Xcodeproj向对象添加自定义属性

Question

我想以编程方式将onlyGenerateCoverageForSpecifiedTargets属性添加到TestAction对象中。根据文档，此属性尚不受支持。因此，我需要为对象添加一个自定义属性。我还需要添加CodeCoverageTargets组。这是我的代码：

scheme = Xcodeproj::XCScheme.new
scheme.add_build_target(app_target)
scheme.set_launch_target(app_target)
scheme.add_test_target(target)
test_action = scheme.test_action
test_action.code_coverage_enabled = true
# add onlyGenerateCoverageForSpecifiedTargets = true
scheme.test_action = test_action
scheme.save_as(xcode_proj_dir, name)

当我从Xcode GUI添加属性时，这里是xml结构。

<TestAction
buildConfiguration = "Debug"
selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
shouldUseLaunchSchemeArgsEnv = "YES"
codeCoverageEnabled = "YES"
onlyGenerateCoverageForSpecifiedTargets = "YES">
<MacroExpansion>
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "D7CE66BC1C7DE6F700FC64CC"
BuildableName = "AppName.app"
BlueprintName = "AppName"
ReferencedContainer = "container:buddyui.xcodeproj">
</BuildableReference>
</MacroExpansion>
<CodeCoverageTargets>
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "D7CE66BC1C7DE6F700FC64CC"
BuildableName = "AppName.app"
BlueprintName = "AppName"
ReferencedContainer = "container:buddyui.xcodeproj">
</BuildableReference>
</CodeCoverageTargets>

Answer 1

我先说：我对Xcodeproj Gem一无所知，也不知道Xcode元数据背后的逻辑。将我的代码作为进一步改进的起点。

你有几种方法可以达到你的要求：

1. MonkeyPatch Xcodeproj。我就是这么做的，很抱歉：-P

2. 扩展Xcodeproj类。这将是建议的解决方案。

3. 使用REXML直接操作XML文件或XCScheme对象。

我的建议来了。我在TestAction中添加了一些方法(基于类似现有方法的代码(，并创建了额外的类CodeCoverageTargets(基于类MacroExpansion(。由于我不知道Xcode是如何工作的，我选择在XCScheme中创建方法add_code_coverage_targets，而不是覆盖set_launch_target(其中MacroExpansion是实例化的(。

require 'xcodeproj'
class Xcodeproj::XCScheme
def add_code_coverage_targets(build_target)
code_cov_targets = CodeCoverageTargets.new(build_target)
test_action.add_code_coverage_targets(code_cov_targets)
end
class CodeCoverageTargets < XMLElementWrapper
def initialize(target_or_node = nil)
create_xml_element_with_fallback(target_or_node, 'CodeCoverageTargets') do
self.buildable_reference = BuildableReference.new(target_or_node) if target_or_node
end
end
def buildable_reference
@buildable_reference ||= BuildableReference.new @xml_element.elements['BuildableReference']
end
def buildable_reference=(ref)
@xml_element.delete_element('BuildableReference')
@xml_element.add_element(ref.xml_element)
@buildable_reference = ref
end
end
class TestAction
def only_generate_coverage_for_specified_targets?
string_to_bool(@xml_element.attributes['onlyGenerateCoverageForSpecifiedTargets'])
end
def only_generate_coverage_for_specified_targets=(flag)
@xml_element.attributes['onlyGenerateCoverageForSpecifiedTargets'] = bool_to_string(flag)
end
def code_coverage_targets
@xml_element.get_elements('CodeCoverageTargets').map do |node|
CodeCoverageTargets.new(node)
end
end
def add_code_coverage_targets(code_coverage_targets)
@xml_element.add_element(code_coverage_targets.xml_element)
end
end
end

你可以这样使用它：

xcode_proj_dir = 'Desktop/SO/66719313/DummyApp.xcodeproj'
xcode_proj = Xcodeproj::Project.open(xcode_proj_dir)
app_target = xcode_proj.targets.first
scheme = Xcodeproj::XCScheme.new
scheme.add_build_target(app_target)
scheme.set_launch_target(app_target)
#scheme.add_test_target(app_target)
scheme.add_code_coverage_targets(app_target) # new method
test_action = scheme.test_action
test_action.code_coverage_enabled = true
test_action.only_generate_coverage_for_specified_targets = true # new method
puts test_action

Answer 2

你可以简单地创建一个模块来添加你想要的行为(即你的方法(，但我不确定这是否能解决你真正的问题

module AddOnlyGenerateCoverageForSpecifiedTargets
attr_accessor :only_generate_coverage_for_specified_targets 
end

然后将模块包含在所需的类中。要将其仅包含在一个对象中，请将其包含在其singleton_class:中

test_action.singleton_class.include AddOnlyGenerateCoverageForSpecifiedTargets
# Now you can use it
test_action.only_generate_coverage_for_specified_targets = true