def _map_name()

in build/fbcode_builder/getdeps/fetcher.py [0:0]

• 15 lines of code
• 10 McCabe index (conditional complexity)

    def _map_name(self, norm_name, dest_root):
        if norm_name.endswith(".pyc") or norm_name.endswith(".swp"):
            # Ignore some incidental garbage while iterating
            return None

        for excl in self.exclusion:
            if excl.match(norm_name):
                return None

        for src_name, dest_name in self.mapping:
            if norm_name == src_name or norm_name.startswith(src_name + "/"):
                rel_name = os.path.relpath(norm_name, src_name)
                # We can have "." as a component of some paths, depending
                # on the contents of the shipit transformation section.
                # normpath doesn't always remove `.` as the final component
                # of the path, which be problematic when we later mkdir
                # the dirname of the path that we return.  Take care to avoid
                # returning a path with a `.` in it.
                rel_name = os.path.normpath(rel_name)
                if dest_name == ".":
                    return os.path.normpath(os.path.join(dest_root, rel_name))
                dest_name = os.path.normpath(dest_name)
                return os.path.normpath(os.path.join(dest_root, dest_name, rel_name))

        raise Exception("%s did not match any rules" % norm_name)