学习Xcodeproj可以从最简单的项目开始着手。

1. 新建一个SingleViewController Project，使用Cocoapod/Xcodeproj打开，查看相关的数据
2. 仅仅删除掉 .xcodeproj
3. 使用Cocoapod/Xcodeproj创建一个.xcodeproj，最终运行效果和刚新建一个SingleViewController Project一样

查看xcodeproj

require 'xcodeproj'

project = Xcodeproj::Project.open('/Users/wangxuefeng/WorkSpace/SingleVCApplication/SingleVCApplication.xcodeproj')

target = project.targets.first

target.build_configuration_list.build_configurations.each { |item| puts item.build_settings }


{   
    "INFOPLIST_FILE"=>"SingleVCApplication/Info.plist",
    "PRODUCT_BUNDLE_IDENTIFIER"=>"com.feng.SingleVCApplication",
    "ASSETCATALOG_COMPILER_APPICON_NAME"=>"AppIcon",
    "LD_RUNPATH_SEARCH_PATHS"=>"$(inherited) @executable_path/Frameworks",
    "PRODUCT_NAME"=>"$(TARGET_NAME)"
}

创建新的xcodeproj

require 'xcodeproj'

def removeBuildPhaseFilesRecursively(aTarget, aGroup)
  aGroup.files.each do |file|
      if file.real_path.to_s.end_with?(".m", ".mm", ".cpp") then
          aTarget.source_build_phase.remove_file_reference(file)
      elsif file.real_path.to_s.end_with?(".plist") then
          aTarget.resources_build_phase.remove_file_reference(file)
      end
  end

  aGroup.groups.each do |group|
      removeBuildPhaseFilesRecursively(aTarget, group)
  end
end

def addFilesToGroup(project,target,group) 
    Dir.foreach(group.real_path) do |entry| 

        filePath = File.join(group.real_path, entry)
        
        puts filePath

        # 过滤目录和.DS_Store
        if !File.directory?(filePath) && entry != ".DS_Store" then
            # 向group中增加文件引用
            fileReference = group.new_reference(filePath)
            # 如果不是头文件则继续增加到Build Phase中，PB文件需要加编译标志
            if filePath.to_s.end_with?("pbobjec.m", "pbobjc.mm") then
                target.add_file_references([fileReference],'-fno-objc-arc')
            elsif filePath.to_s.end_with?(".m",".mm",".cpp") then
                target.source_build_phase.add_file_reference(fileReference,true)
            elsif filePath.to_s.end_with?(".plist",".storyboard",".xib") then 
                target.resources_build_phase.add_file_reference(fileReference,true)
            end
        elsif File.directory?(filePath) && entry != '.' && entry != '..' then
            puts filePath
            # 目录递归添加
            hierarchy_path = group.hierarchy_path[1,group.hierarchy_path.length]
            subGroup = project.main_group.find_subpath(hierarchy_path + '/' + entry,true)
            subGroup.set_source_tree(group.source_tree)
            subGroup.set_path(group.real_path + entry)
            addFilesToGroup(project,target,subGroup)
        end
    end
end

proj = Xcodeproj::Project.new("./Test/Test.xcodeproj")
app_target = proj.new_target(:application, 'Test', :ios, '7.0')

puts proj.main_group.pretty_print
puts proj.main_group.real_path

test_group = proj.main_group.new_group("Test","Test","<group>")

addFilesToGroup(proj,app_target,test_group)

puts app_target.build_configuration_list

#创建一个PBXVariantGroup xib/storyboard
#test_group.new_variant_group("Asserts.xcassets","Asserts.xcassets");

app_target.build_configuration_list.set_setting('INFOPLIST_FILE','Test/Info.plist')
app_target.build_configuration_list.set_setting('PRODUCT_BUNDLE_IDENTIFIER','com.fungo.test')

app_target.build_configuration_list.build_configurations.each { |item| puts item.build_settings }


puts app_target.resolved_build_setting('INFOPLIST_FILE')


proj.save()