http.py 文件源码

def static_request_handler(cls: Any, obj: Any, context: Dict, func: Any, path: str, base_url: str) -> Any:
        if '?P<filename>' not in base_url:
            pattern = r'^{}(?P<filename>.+?)$'.format(re.sub(r'\$$', '', re.sub(r'^\^?(.*)$', r'\1', base_url)))
        else:
            pattern = r'^{}$'.format(re.sub(r'\$$', '', re.sub(r'^\^?(.*)$', r'\1', base_url)))
        compiled_pattern = re.compile(pattern)

        if path.startswith('/'):
            path = os.path.dirname(path)
        else:
            path = '{}/{}'.format(os.path.dirname(context.get('context', {}).get('_service_file_path')), path)

        if not path.endswith('/'):
            path = '{}/'.format(path)

        async def handler(request: web.Request) -> web.Response:
            result = compiled_pattern.match(request.path)
            filename = result.groupdict()['filename']
            filepath = '{}{}'.format(path, filename)

            try:
                if os.path.isdir(filepath) or not os.path.exists(filepath):
                    raise web.HTTPNotFound()

                pathlib.Path(filepath).open('r')
                return FileResponse(filepath)
            except PermissionError as e:
                raise web.HTTPForbidden()

        context['_http_routes'] = context.get('_http_routes', [])
        context['_http_routes'].append(('GET', pattern, handler))

        start_func = cls.start_server(obj, context)
        return (await start_func) if start_func else None