def copy_pr()

in sync/landing.py [0:0]

• 42 lines of code
• 7 McCabe index (conditional complexity)

    def copy_pr(self, git_work_gecko, git_work_wpt, pr, wpt_commits, message, author, metadata):
        # Ensure we have anything in a wpt submodule
        git_work_wpt.git.submodule("update", "--init", "--recursive")

        dest_path = os.path.join(git_work_gecko.working_dir,
                                 env.config["gecko"]["path"]["wpt"])
        src_path = git_work_wpt.working_dir

        # Specific paths that should be re-checked out
        keep_paths = {"LICENSE", "resources/testdriver_vendor.js"}
        # file names that are ignored in any part of the tree
        ignore_files = {".git"}

        logger.info("Setting wpt HEAD to %s" % wpt_commits[-1].sha1)
        git_work_wpt.head.reference = wpt_commits[-1].commit
        git_work_wpt.head.reset(index=True, working_tree=True)

        # First remove all files so we handle deletion correctly
        shutil.rmtree(dest_path)

        ignore_paths = defaultdict(set)
        for name in keep_paths:
            src, name = os.path.split(os.path.join(src_path, name))
            ignore_paths[src].add(name)

        def ignore_names(src, names):
            rv = []
            for item in names:
                if item in ignore_files:
                    rv.append(item)
            if src in ignore_paths:
                rv.extend(ignore_paths[src])
            return rv

        shutil.copytree(src_path,
                        dest_path,
                        ignore=ignore_names)

        # Now re-checkout the files we don't want to change
        # checkout-index allows us to ignore files that don't exist
        git_work_gecko.git.checkout_index(*(os.path.join(env.config["gecko"]["path"]["wpt"], item)
                                            for item in keep_paths), force=True, quiet=True)

        allow_empty = False
        if not git_work_gecko.is_dirty(untracked_files=True):
            logger.info("PR %s didn't add any changes" % pr.number)
            allow_empty = True

        git_work_gecko.git.add(env.config["gecko"]["path"]["wpt"],
                               no_ignore_removal=True)

        message = sync_commit.Commit.make_commit_msg(message, metadata)

        commit = git_work_gecko.index.commit(message=message,
                                             author=git.Actor._from_string(author))
        logger.debug("Gecko files changed: \n%s" % "\n".join(list(commit.stats.files.keys())))
        gecko_commit = sync_commit.GeckoCommit(self.git_gecko,
                                               commit.hexsha,
                                               allow_empty=allow_empty)

        return gecko_commit