125 lines
3.8 KiB
Python
125 lines
3.8 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
|
|
|
|
# Copyright 2014-2016 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
|
|
#
|
|
# This file is part of qutebrowser.
|
|
#
|
|
# qutebrowser is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# qutebrowser is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
"""Utilities related to jinja2."""
|
|
|
|
import os
|
|
import os.path
|
|
import traceback
|
|
import mimetypes
|
|
import html
|
|
|
|
import jinja2
|
|
import jinja2.exceptions
|
|
|
|
from qutebrowser.utils import utils, urlutils, log
|
|
|
|
from PyQt5.QtCore import QUrl
|
|
|
|
html_fallback = """
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<title>Error while loading template</title>
|
|
</head>
|
|
<body>
|
|
<p><span style="font-size:120%;color:red">
|
|
The %FILE% template could not be found!<br>
|
|
Please check your qutebrowser installation
|
|
</span><br>
|
|
%ERROR%
|
|
</p>
|
|
</body>
|
|
</html>
|
|
"""
|
|
|
|
|
|
class Loader(jinja2.BaseLoader):
|
|
|
|
"""Jinja loader which uses utils.read_file to load templates.
|
|
|
|
Attributes:
|
|
_subdir: The subdirectory to find templates in.
|
|
"""
|
|
|
|
def __init__(self, subdir):
|
|
self._subdir = subdir
|
|
|
|
def get_source(self, _env, template):
|
|
path = os.path.join(self._subdir, template)
|
|
try:
|
|
source = utils.read_file(path)
|
|
except OSError as e:
|
|
source = html_fallback.replace("%ERROR%", html.escape(str(e)))
|
|
source = source.replace("%FILE%", html.escape(template))
|
|
log.misc.exception("The {} template could not be loaded from {}"
|
|
.format(template, path))
|
|
# Currently we don't implement auto-reloading, so we always return True
|
|
# for up-to-date.
|
|
return source, path, lambda: True
|
|
|
|
|
|
def _guess_autoescape(template_name):
|
|
"""Turn auto-escape on/off based on the file type.
|
|
|
|
Based on http://jinja.pocoo.org/docs/dev/api/#autoescaping
|
|
"""
|
|
if template_name is None or '.' not in template_name:
|
|
return False
|
|
ext = template_name.rsplit('.', 1)[1]
|
|
return ext in ['html', 'htm', 'xml']
|
|
|
|
|
|
def resource_url(path):
|
|
"""Load images from a relative path (to qutebrowser).
|
|
|
|
Arguments:
|
|
path: The relative path to the image
|
|
"""
|
|
image = utils.resource_filename(path)
|
|
return QUrl.fromLocalFile(image).toString(QUrl.FullyEncoded)
|
|
|
|
|
|
def data_url(path):
|
|
"""Get a data: url for the broken qutebrowser logo."""
|
|
data = utils.read_file(path, binary=True)
|
|
filename = utils.resource_filename(path)
|
|
mimetype = mimetypes.guess_type(filename)
|
|
assert mimetype is not None, path
|
|
return urlutils.data_url(mimetype[0], data).toString()
|
|
|
|
|
|
def render(template, **kwargs):
|
|
"""Render the given template and pass the given arguments to it."""
|
|
try:
|
|
return _env.get_template(template).render(**kwargs)
|
|
except jinja2.exceptions.UndefinedError:
|
|
log.misc.exception("UndefinedError while rendering " + template)
|
|
err_path = os.path.join('html', 'undef_error.html')
|
|
err_template = utils.read_file(err_path)
|
|
tb = traceback.format_exc()
|
|
return err_template.format(pagename=template, traceback=tb)
|
|
|
|
|
|
_env = jinja2.Environment(loader=Loader('html'), autoescape=_guess_autoescape)
|
|
_env.globals['resource_url'] = resource_url
|
|
_env.globals['file_url'] = urlutils.file_url
|
|
_env.globals['data_url'] = data_url
|