+++ /dev/null
-import collections
-import http.cookies
-import json
-import urllib.parse
-
-_Request = collections.namedtuple(
- 'Request',
- (
- 'env',
- 'GET',
- 'accept',
- 'accept_encoding',
- 'accept_language',
- 'content',
- 'content_length',
- 'content_type',
- 'cookie',
- 'method',
- 'path',
- 'parameters',
- 'query',
- 'user_agent',
- )
-)
-
-class Request(_Request):
- def __new__(cls, env):
- errors = []
-
- accept = env.get('HTTP_ACCEPT')
- accept_encoding = env.get('HTTP_ACCEPT_ENCODING')
- accept_language = env.get('HTTP_ACCEPT_LANGUAGE')
- content = env.get('CONTENT', '')
- content_type = env.get('CONTENT_TYPE')
- method = env.get('REQUEST_METHOD')
- path = env.get('PATH_INFO')
- query = env.get('QUERY_STRING')
- user_agent = env.get('HTTP_USER_AGENT')
-
- content_length = env.get('CONTENT_LENGTH')
-
- if content_length == '' or content_length is None:
- content_length = 0
- else:
- try:
- content_length = int(content_length)
- except ValueError:
- errors.append('Unable to parse Content-Length "{}"'.format(content_length))
- content_length = 0
-
- try:
- cookie = http.cookies.SimpleCookie(env.get('HTTP_COOKIE'))
- except:
- cookie = http.cookies.SimpleCookie()
-
-
- try:
- GET = urllib.parse.parse_qs(query)
- except:
- GET = {}
- errors.append('Unable to parse GET parameters from query string "{}"'.format(query))
-
- if method == 'GET':
- parameters = GET
-
- result = super().__new__(
- cls,
- env=env,
- GET=GET,
- accept=accept,
- accept_encoding=accept_encoding,
- accept_language=accept_language,
- content = content,
- content_length = content_length,
- content_type = content_type,
- cookie=cookie,
- method=method,
- parameters=parameters,
- path=path,
- query=query,
- user_agent=user_agent,
- )
-
- result.subpath = path
- return result
-
-_Response = collections.namedtuple(
- 'Response',
- (
- 'status',
- 'content_type',
- 'extra_headers',
- 'content',
- ),
-)
-
-class Response(_Response):
- def __new__(cls, content, **kwargs):
- status = kwargs.pop('status', 200)
- assert isinstance(status, int)
-
- content_type = kwargs.pop('content_type')
- assert isinstance(content_type, str)
-
- extra_headers = kwargs.pop('extra_headers', ())
- assert isinstance(extra_headers, tuple)
-
- assert len(kwargs) == 0
-
- return super().__new__(
- cls,
- status=status,
- content_type=content_type,
- extra_headers=extra_headers,
- content=content,
- )
-
- @property
- def headers(self):
- return (
- ('Content-Type', self.content_type),
- )
-
-class HTMLResponse(Response):
- def __new__(cls, content, **kwargs):
- assert 'content_type' not in kwargs
-
- return super().__new__(
- cls,
- content,
- content_type='text/html',
- **kwargs,
- )
-
-class JSONResponse(Response):
- def __new__(cls, content_json, **kwargs):
- assert 'content_type' not in kwargs
- assert 'content' not in kwargs
-
- self = super().__new__(
- cls,
- content=json.dumps(content_json),
- content_type='application/json',
- **kwargs,
- )
- self.content_json = content_json
- return self
-
-class TextResponse(Response):
- def __new__(cls, content, **kwargs):
- assert 'content_type' not in kwargs
-
- return super().__new__(
- cls,
- content,
- content_type='text/plain',
- **kwargs,
- )
-
-_RedirectResponse = collections.namedtuple(
- 'RedirectResponse',
- (
- 'location',
- 'permanent',
- ),
-)
-
-class RedirectResponse(_RedirectResponse):
- def __new__(cls, location, **kwargs):
- assert isinstance(location, str)
-
- permanent = kwargs.pop('permanent', True)
- assert isinstance(permanent, bool)
- assert len(kwargs) == 0
-
- return super().__new__(
- cls,
- location=location,
- permanent=permanent,
- )
-
- @property
- def status(self):
- return 308 if self.permanent else 307
-
- @property
- def headers(self):
- return (('Location', self.location),)
-
- @property
- def content(self):
- return (b'',)
-
-REQUEST_METHODS = (
- 'GET',
- 'HEAD',
- 'POST',
- 'PUT',
- 'PATCH',
- 'DELETE',
- 'CONNECT',
- 'OPTIONS',
- 'TRACE',
-)
-
-def default_method_not_allowed_handler(request):
- return Response('')
-
-def default_options_handler(handlers):
- def handler(request):
- return Response(','.join(handlers.keys()))
- return handler
-
-def route_on_method(**kwargs):
- handlers = {}
- for method in REQUEST_METHODS:
- if method in kwargs:
- handlers[method] = kwargs.pop(method)
-
- method_not_allowed_handler = kwargs.pop(
- 'method_not_allowed',
- default_method_not_allowed_handler,
- )
-
- assert len(kwargs) == 0
-
- if 'OPTIONS' not in handlers:
- handlers['OPTIONS'] = default_options_handler(handlers)
-
- def handler(request):
- return handlers.get(
- request.method.upper(),
- method_not_allowed_handler,
- )(request)
-
- return handler
-
-def _get_status(response):
- return {
- 200: '200 OK',
- 307: '307 Temporary Redirect',
- 308: '308 Permanent Redirect',
- }[response.status]
-
-def _get_headers(response):
- return list(response.headers)
-
-def _get_content(response):
- content = response.content
-
- if isinstance(content, bytes):
- return (content,)
-
- if isinstance(content, str):
- return (content.encode('utf-8'),)
-
- return content
-
-def App(handler):
- def app(env, start_fn):
- response = handler(Request(env))
-
- start_fn(_get_status(response), _get_headers(response))
- return _get_content(response)
- return app
projects / fwx / blobdiff