forked from extern/httpie-cli
ef62fc11bf
* core: support custom request/response classes * Move to `httpie.models`, prefix with `Requests`
141 lines
4.0 KiB
Python
141 lines
4.0 KiB
Python
import requests
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from enum import Enum, auto
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from typing import Iterable, Union
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from urllib.parse import urlsplit
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from .utils import split_cookies, parse_content_type_header
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from .compat import cached_property
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class HTTPMessage:
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"""Abstract class for HTTP messages."""
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def __init__(self, orig):
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self._orig = orig
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def iter_body(self, chunk_size: int) -> Iterable[bytes]:
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"""Return an iterator over the body."""
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raise NotImplementedError
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def iter_lines(self, chunk_size: int) -> Iterable[bytes]:
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"""Return an iterator over the body yielding (`line`, `line_feed`)."""
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raise NotImplementedError
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@property
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def headers(self) -> str:
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"""Return a `str` with the message's headers."""
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raise NotImplementedError
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@cached_property
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def encoding(self) -> str:
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ct, params = parse_content_type_header(self.content_type)
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return params.get('charset', '')
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@property
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def content_type(self) -> str:
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"""Return the message content type."""
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ct = self._orig.headers.get('Content-Type', '')
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if not isinstance(ct, str):
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ct = ct.decode()
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return ct
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class HTTPResponse(HTTPMessage):
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"""A :class:`requests.models.Response` wrapper."""
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def iter_body(self, chunk_size=1):
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return self._orig.iter_content(chunk_size=chunk_size)
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def iter_lines(self, chunk_size):
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return ((line, b'\n') for line in self._orig.iter_lines(chunk_size))
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# noinspection PyProtectedMember
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@property
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def headers(self):
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try:
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raw_version = self._orig.raw._original_response.version
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except AttributeError:
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# Assume HTTP/1.1
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raw_version = 11
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version = {
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9: '0.9',
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10: '1.0',
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11: '1.1',
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20: '2',
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}[raw_version]
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original = self._orig
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status_line = f'HTTP/{version} {original.status_code} {original.reason}'
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headers = [status_line]
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headers.extend(
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': '.join(header)
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for header in original.headers.items()
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if header[0] != 'Set-Cookie'
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)
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headers.extend(
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f'Set-Cookie: {cookie}'
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for header, value in original.headers.items()
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for cookie in split_cookies(value)
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if header == 'Set-Cookie'
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)
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return '\r\n'.join(headers)
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class HTTPRequest(HTTPMessage):
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"""A :class:`requests.models.Request` wrapper."""
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def iter_body(self, chunk_size):
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yield self.body
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def iter_lines(self, chunk_size):
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yield self.body, b''
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@property
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def headers(self):
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url = urlsplit(self._orig.url)
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request_line = '{method} {path}{query} HTTP/1.1'.format(
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method=self._orig.method,
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path=url.path or '/',
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query=f'?{url.query}' if url.query else ''
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)
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headers = self._orig.headers.copy()
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if 'Host' not in self._orig.headers:
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headers['Host'] = url.netloc.split('@')[-1]
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headers = [
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f'{name}: {value if isinstance(value, str) else value.decode()}'
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for name, value in headers.items()
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]
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headers.insert(0, request_line)
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headers = '\r\n'.join(headers).strip()
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return headers
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@property
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def body(self):
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body = self._orig.body
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if isinstance(body, str):
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# Happens with JSON/form request data parsed from the command line.
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body = body.encode()
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return body or b''
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RequestsMessage = Union[requests.PreparedRequest, requests.Response]
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class RequestsMessageKind(Enum):
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REQUEST = auto()
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RESPONSE = auto()
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def infer_requests_message_kind(message: RequestsMessage) -> RequestsMessageKind:
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if isinstance(message, requests.PreparedRequest):
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return RequestsMessageKind.REQUEST
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elif isinstance(message, requests.Response):
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return RequestsMessageKind.RESPONSE
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else:
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raise TypeError(f"Unexpected message type: {type(message).__name__}")
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