Python HeaderDict.get方法代码示例

# 需要导入模块: from paste.response import HeaderDict [as 别名]
# 或者: from paste.response.HeaderDict import get [as 别名]
class Response(object):
    """
    Describes an HTTP response. Currently very simple since the actual body
    of the request is handled separately.
    """

    def __init__(self):
        """
        Create a new Response defaulting to HTML content and "200 OK" status
        """
        self.status = "200 OK"
        self.headers = HeaderDict({"content-type": "text/html"})
        self.cookies = SimpleCookie()

    def set_content_type(self, type_):
        """
        Sets the Content-Type header
        """
        self.headers["content-type"] = type_

    def get_content_type(self):
        return self.headers.get("content-type", None)

    def send_redirect(self, url):
        """
        Send an HTTP redirect response to (target `url`)
        """
        if "\n" in url or "\r" in url:
            raise webob.exc.HTTPInternalServerError("Invalid redirect URL encountered.")
        raise webob.exc.HTTPFound(location=url)

    def wsgi_headeritems(self):
        """
        Return headers in format appropriate for WSGI `start_response`
        """
        result = self.headers.headeritems()
        # Add cookie to header
        for name, crumb in self.cookies.items():
            header, value = str(crumb).split(': ', 1)
            result.append((header, value))
        return result

    def wsgi_status(self):
        """
        Return status line in format appropriate for WSGI `start_response`
        """
        if isinstance(self.status, int):
            exception = webob.exc.status_map.get(self.status)
            return "%d %s" % (exception.code, exception.title)
        else:
            return self.status

# 需要导入模块: from paste.response import HeaderDict [as 别名]
# 或者: from paste.response.HeaderDict import get [as 别名]
class WSGIResponse(object):
    """A basic HTTP response with content, headers, and out-bound cookies

    The class variable ``defaults`` specifies default values for
    ``content_type``, ``charset`` and ``errors``. These can be overridden
    for the current request via the registry.

    """
    defaults = StackedObjectProxy(
        default=dict(content_type='text/html', charset='utf-8', 
                     errors='strict', headers={'Cache-Control':'no-cache'})
        )
    def __init__(self, content='', mimetype=None, code=200):
        self._iter = None
        self._is_str_iter = True

        self.content = content
        self.headers = HeaderDict()
        self.cookies = SimpleCookie()
        self.status_code = code

        defaults = self.defaults._current_obj()
        if not mimetype:
            mimetype = defaults.get('content_type', 'text/html')
            charset = defaults.get('charset')
            if charset:
                mimetype = '%s; charset=%s' % (mimetype, charset)
        self.headers.update(defaults.get('headers', {}))
        self.headers['Content-Type'] = mimetype
        self.errors = defaults.get('errors', 'strict')

    def __str__(self):
        """Returns a rendition of the full HTTP message, including headers.

        When the content is an iterator, the actual content is replaced with the
        output of str(iterator) (to avoid exhausting the iterator).
        """
        if self._is_str_iter:
            content = ''.join(self.get_content())
        else:
            content = str(self.content)
        return '\n'.join(['%s: %s' % (key, value)
            for key, value in self.headers.headeritems()]) \
            + '\n\n' + content
    
    def __call__(self, environ, start_response):
        """Convenience call to return output and set status information
        
        Conforms to the WSGI interface for calling purposes only.
        
        Example usage:
        
        .. code-block:: Python

            def wsgi_app(environ, start_response):
                response = WSGIResponse()
                response.write("Hello world")
                response.headers['Content-Type'] = 'latin1'
                return response(environ, start_response)
        
        """
        status_text = STATUS_CODE_TEXT[self.status_code]
        status = '%s %s' % (self.status_code, status_text)
        response_headers = self.headers.headeritems()
        for c in self.cookies.values():
            response_headers.append(('Set-Cookie', c.output(header='')))
        start_response(status, response_headers)
        is_file = isinstance(self.content, file)
        if 'wsgi.file_wrapper' in environ and is_file:
            return environ['wsgi.file_wrapper'](self.content)
        elif is_file:
            return iter(lambda: self.content.read(), '')
        return self.get_content()
    
    def determine_charset(self):
        """
        Determine the encoding as specified by the Content-Type's charset
        parameter, if one is set
        """
        charset_match = _CHARSET_RE.search(self.headers.get('Content-Type', ''))
        if charset_match:
            return charset_match.group(1)
    
    def has_header(self, header):
        """
        Case-insensitive check for a header
        """
        warnings.warn('WSGIResponse.has_header is deprecated, use '
                      'WSGIResponse.headers.has_key instead', DeprecationWarning,
                      2)
        return self.headers.has_key(header)

    def set_cookie(self, key, value='', max_age=None, expires=None, path='/',
                   domain=None, secure=None):
        """
        Define a cookie to be sent via the outgoing HTTP headers
        """
        self.cookies[key] = value
        for var_name, var_value in [
            ('max_age', max_age), ('path', path), ('domain', domain),
#.........这里部分代码省略.........