text: from conans import ConanFile, CMake, tools
  import os
  
  
  class DocoptCppConan(ConanFile):
      name = "docopt.cpp"
      license = "MIT"
      url = "https://github.com/conan-io/conan-center-index"
      homepage = "https://github.com/docopt/docopt.cpp"
      settings = "os", "compiler", "build_type", "arch"
      description = "C++11 port of docopt"
      options = {"shared": [True, False], "fPIC": [True, False], "boost_regex": [True, False]}
      default_options = {"shared": False, "fPIC": True, "boost_regex": False}
      topics = ("CLI", "getopt", "options", "argparser")
      generators = "cmake"
      exports_sources = ["patches/**", "CMakeLists.txt"]
  
      _cmake = None
  
      @property
      def _source_subfolder(self):
          return "source_subfolder"
  
      @property
      def _build_subfolder(self):
          return "build_subfolder"
  
      def config_options(self):
          if self.settings.os == "Windows":
              del self.options.fPIC
  
      def configure(self):
          if self.options.shared:
              del self.options.fPIC
          if self.settings.compiler.cppstd:
              tools.check_min_cppstd(self, "11")
  
      def requirements(self):
          if self.options.boost_regex:
              self.requires("boost/1.74.0")
  
      def source(self):
          tools.get(**self.conan_data["sources"][self.version])
          extracted_dir = self.name + "-" + self.version
          os.rename(extracted_dir, self._source_subfolder)
  
      def _configure_cmake(self):
          if self._cmake:
              return self._cmake
          self._cmake = CMake(self)
          self._cmake.definitions["USE_BOOST_REGEX"] = self.options.boost_regex
          self._cmake.configure(build_folder=self._build_subfolder)
          return self._cmake
  
      def build(self):
          for patch in self.conan_data.get("patches", {}).get(self.version, []):
              tools.patch(**patch)
          cmake = self._configure_cmake()
          cmake.build()
  
      def package(self):
          self.copy("LICENSE*", dst="licenses", src=self._source_subfolder)
          cmake = self._configure_cmake()
          cmake.install()
          tools.rmdir(os.path.join(self.package_folder, "lib", "cmake"))
          tools.rmdir(os.path.join(self.package_folder, "lib", "pkgconfig"))
  
      def package_info(self):
          # TODO: imported CMake target shouldn't be namespaced
          self.cpp_info.names["cmake_find_package"] = "docopt"
          self.cpp_info.names["cmake_find_package_multi"] = "docopt"
          self.cpp_info.names["pkg_config"] = "docopt"
          cmake_target = "docopt" if self.options.shared else "docopt_s"
          self.cpp_info.components["docopt"].names["cmake_find_package"] = cmake_target
          self.cpp_info.components["docopt"].names["cmake_find_package_multi"] = cmake_target
          self.cpp_info.components["docopt"].libs = ["docopt"]
          if self.settings.os == "Linux":
              self.cpp_info.components["docopt"].system_libs = ["m"]
          if self.settings.compiler == "Visual Studio" and self.options.shared:
              self.cpp_info.components["docopt"].defines = ["DOCOPT_DLL"]
          if self.options.boost_regex:
              self.cpp_info.components["docopt"].requires.append("boost::boost")
  