Use PurePosixPath for URL paths

[hroncok]

(Maybe) Fixes #2

untested

[encukou]

Thank you!
I don't have a good way to test on Windows, but this works for me on Linux.

[hroncok]

Me neither.

[hroncok]

If you know a command I can recommend to @Zuzanita without screwing her Pipfile, I'd appreciate it.

[hroncok]

(command to update naucse_render)

[encukou]

This might work:

pipenv run pip install -U git+https://github.com/pyvec/naucse_render.git#egg=naucse_render

[hroncok]

Got Windows!

...
Rendering page intro/micropython (index)
ERROR:flask.app:Exception on /static/css/body.css [GET]
Traceback (most recent call last):
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask\app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask\app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask\app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask\_compat.py", line 35, in reraise
    raise value
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask\app.py", line 1811, in full_dispatch_request
    rv = self.preprocess_request()
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask\app.py", line 2087, in preprocess_request
    rv = func()
  File "C:\Users\Linux\naucse.python.cz\naucse\views.py", line 51, in _get_model

    g.model.freeze()
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 1029, in freeze
    course.freeze()
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 816, in freeze
    self.load_all_lessons()
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 799, in load_all
_lessons
    self.load_lessons(self._requested_lessons)
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 780, in load_les
sons
    parent=self,
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 603, in load

    return converter.load(data[slug], **kwargs)
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 215, in load

    result[k] = self.item_converter.load(v, **kwargs)
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 468, in load

    field.load_into(result, data, parent=result)
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 360, in load
_into
    value = self.converter.load(item_data, **kwargs)
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 215, in load

    result[k] = self.item_converter.load(v, **kwargs)
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 468, in load

    field.load_into(result, data, parent=result)
  File "C:\Users\Linux\naucse.python.cz\naucse\converters.py", line 360, in load
_into
    value = self.converter.load(item_data, **kwargs)
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 162, in load
    return self.sanitizer(parent, value)
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 147, in _sanitiz
e_page_content
    'static': static_url,
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 198, in saniti
ze_html
    for fragment in lxml.html.fragments_fromstring(text)
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 198, in <listc
omp>
    for fragment in lxml.html.fragments_fromstring(text)
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 186, in saniti
ze_fragment
    sanitize_element(fragment, naucse_urls=naucse_urls)
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 179, in saniti
ze_element
    sanitize_element(child, naucse_urls=naucse_urls)
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 179, in saniti
ze_element
    sanitize_element(child, naucse_urls=naucse_urls)
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 169, in saniti
ze_element
    attr_name, value, naucse_urls=naucse_urls)
  File "C:\Users\Linux\naucse.python.cz\naucse\sanitize.py", line 103, in conver
t_link
    new_url = naucse_urls[url.path](**query)
  File "C:\Users\Linux\naucse.python.cz\naucse\models.py", line 140, in static_u
rl
    return parent_page.lesson.static_files[filename].get_url(**kw)
KeyError: 'pics/grass.svg'
Traceback (most recent call last):
  File "C:\Users\Linux\AppData\Local\Programs\Python\Python36-32\Lib\runpy.py",
line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "C:\Users\Linux\AppData\Local\Programs\Python\Python36-32\Lib\runpy.py",
line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\Linux\naucse.python.cz\naucse\__main__.py", line 3, in <module>

    main()
  File "C:\Users\Linux\naucse.python.cz\naucse\cli.py", line 8, in main
    elsa.cli(app, base_url='https://naucse.python.cz')
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
elsa\_cli.py", line 158, in cli
    return command()
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
click\core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
click\core.py", line 717, in main
    rv = self.invoke(ctx)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
click\core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
click\core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
click\core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
elsa\_cli.py", line 113, in freeze
    freeze_app(app, freezer, path, base_url, verbose=verbose)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
elsa\_cli.py", line 50, in freeze_app
    for page in freezer.freeze_yield():
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask_frozen\__init__.py", line 183, in freeze_yield
    new_filename = self._build_one(url)
  File "C:\Users\Linux\.virtualenvs\naucse.python.cz-Ap5RjXMi\lib\site-packages\
flask_frozen\__init__.py", line 322, in _build_one
    % (response.status, url))
ValueError: Unexpected status '500 INTERNAL SERVER ERROR' on URL /static/css/bod
y.css

C:\Users\Linux\naucse.python.cz>

[hroncok]

Reported as pyvec/naucse.python.cz#517