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"""Tornado handlers for viewing HTML files."""
# Copyright (c) Jupyter Development Team.
# Distributed under the terms of the Modified BSD License.
from jupyter_core.utils import ensure_async
from tornado import web
from jupyter_server.auth.decorator import authorized
from ..base.handlers import JupyterHandler, path_regex
from ..utils import url_escape, url_path_join
AUTH_RESOURCE = "contents"
class ViewHandler(JupyterHandler):
"""Render HTML files within an iframe."""
auth_resource = AUTH_RESOURCE
@web.authenticated
@authorized
async def get(self, path):
"""Get a view on a given path."""
path = path.strip("/")
if not await ensure_async(self.contents_manager.file_exists(path)):
raise web.HTTPError(404, "File does not exist: %s" % path)
basename = path.rsplit("/", 1)[-1]
file_url = url_path_join(self.base_url, "files", url_escape(path))
self.write(self.render_template("view.html", file_url=file_url, page_title=basename))
default_handlers = [
(r"/view%s" % path_regex, ViewHandler),
]
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