"""Bazel rule for making a zip file."""

def zip_dir(name, srcs, zipname, **kwargs):
    """Zips up an entire directory or Fileset.

    Args:
      name: The name of the target
      srcs: A single-item list with a directory or fileset
      zipname: The name of the output zip file
      **kwargs: Further generic arguments to pass to genrule, e.g. visibility.
    """
    if len(srcs) > 1:
        fail("More than one directory is not supported by zip_dir yet", attr = srcs)
    native.genrule(
        name = name,
        srcs = srcs,
        outs = [zipname],
        cmd = "zip $(OUTS) $(SRCS)",
        **kwargs
    )