web.py 文件源码

def __call__(self, environ, start_response):
        if environ.get('HTTP_CONTENT_ENCODING', '') == 'gzip':
            try:
                environ['wsgi.input'].tell()
                wsgi_input = environ['wsgi.input']
            except (AttributeError, IOError, NotImplementedError):
                # The gzip implementation in the standard library of Python 2.x
                # requires working '.seek()' and '.tell()' methods on the input
                # stream.  Read the data into a temporary file to work around
                # this limitation.
                wsgi_input = tempfile.SpooledTemporaryFile(16 * 1024 * 1024)
                shutil.copyfileobj(environ['wsgi.input'], wsgi_input)
                wsgi_input.seek(0)

            environ['wsgi.input'] = gzip.GzipFile(filename=None, fileobj=wsgi_input, mode='r')
            del environ['HTTP_CONTENT_ENCODING']
            if 'CONTENT_LENGTH' in environ:
                del environ['CONTENT_LENGTH']

        return self.app(environ, start_response)