validation.py

                                "Flow names may only contain (roman) "
                                "letters, numbers, "
                                "dashes and underscores."))
                        % entry_path)

            location = "flows/%s" % entry_path
            flow_desc = get_yaml_from_repo_safely(repo, location,
                    commit_sha=validate_sha)

            validate_flow_desc(vctx, location, flow_desc)

            # {{{ check grade_identifier

            flow_grade_identifier = None
            if hasattr(flow_desc, "rules"):
                flow_grade_identifier = getattr(
                        flow_desc.rules, "grade_identifier", None)

            if (
                    flow_grade_identifier is not None
                    and
                    set([flow_grade_identifier]) & used_grade_identifiers):
                raise ValidationError(
                        string_concat("%s: ",
                                      _("flow uses the same grade_identifier "
                                        "as another flow"))
                        % location)

            used_grade_identifiers.add(flow_grade_identifier)

            # }}}

    return vctx.warnings


# {{{ validation script support

class FileSystemFakeRepo(object):
    def __init__(self, root):
        self.root = root

    def controldir(self):
        return self.root

    def __getitem__(self, sha):
        return sha

    def __str__(self):
        return "<FAKEREPO:%s>" % self.root

    def decode(self):
        return self

    @property
    def tree(self):
        return FileSystemFakeRepoTree(self.root)


class FileSystemFakeRepoTreeEntry(object):
    def __init__(self, path, mode):
        self.path = path
        self.mode = mode


class FileSystemFakeRepoTree(object):
    def __init__(self, root):
        self.root = root

    def __getitem__(self, name):
        from os.path import join, isdir, exists
        name = join(self.root, name)

        if not exists(name):
            raise KeyError(name)

        # returns mode, "sha"
        if isdir(name):
            return None, FileSystemFakeRepoTree(name)
        else:
            return None, FileSystemFakeRepoFile(name)

    def items(self):
        import os
        return [
                FileSystemFakeRepoTreeEntry(
                    path=n,
                    mode=os.stat(os.path.join(self.root, n)).st_mode)
                for n in os.listdir(self.root)]


class FileSystemFakeRepoFile(object):
    def __init__(self, name):
        self.name = name

    @property
    def data(self):
        with open(self.name, "rb") as inf:
            return inf.read()


def validate_course_on_filesystem_script_entrypoint():
    from django.conf import settings
    settings.configure(DEBUG=True)

    import django
    django.setup()

    import os
    import argparse
    parser = argparse.ArgumentParser(description='Process some integers.')
    parser.add_argument("--course-file", default="course.yml")
    parser.add_argument("--events-file", default="events.yml")
    parser.add_argument('root', default=os.getcwd())

    args = parser.parse_args()

    fake_repo = FileSystemFakeRepo(args.root)
    warnings = validate_course_content(
            fake_repo,
            args.course_file, args.events_file,
            validate_sha=fake_repo, course=None)

    if warnings:
        print(_("WARNINGS: "))
        for w in warnings:
            print("***", w.location, w.text)

# }}}

# vim: foldmethod=marker