Spaces:
No application file
No application file
House_price_prediction
/
BangloreHousePrediction
/.venv
/Lib
/site-packages
/pip
/_internal
/network
/download.py
"""Download files with progress indicators. | |
""" | |
import email.message | |
import logging | |
import mimetypes | |
import os | |
from typing import Iterable, Optional, Tuple | |
from pip._vendor.requests.models import CONTENT_CHUNK_SIZE, Response | |
from pip._internal.cli.progress_bars import get_download_progress_renderer | |
from pip._internal.exceptions import NetworkConnectionError | |
from pip._internal.models.index import PyPI | |
from pip._internal.models.link import Link | |
from pip._internal.network.cache import is_from_cache | |
from pip._internal.network.session import PipSession | |
from pip._internal.network.utils import HEADERS, raise_for_status, response_chunks | |
from pip._internal.utils.misc import format_size, redact_auth_from_url, splitext | |
logger = logging.getLogger(__name__) | |
def _get_http_response_size(resp: Response) -> Optional[int]: | |
try: | |
return int(resp.headers["content-length"]) | |
except (ValueError, KeyError, TypeError): | |
return None | |
def _prepare_download( | |
resp: Response, | |
link: Link, | |
progress_bar: str, | |
) -> Iterable[bytes]: | |
total_length = _get_http_response_size(resp) | |
if link.netloc == PyPI.file_storage_domain: | |
url = link.show_url | |
else: | |
url = link.url_without_fragment | |
logged_url = redact_auth_from_url(url) | |
if total_length: | |
logged_url = f"{logged_url} ({format_size(total_length)})" | |
if is_from_cache(resp): | |
logger.info("Using cached %s", logged_url) | |
else: | |
logger.info("Downloading %s", logged_url) | |
if logger.getEffectiveLevel() > logging.INFO: | |
show_progress = False | |
elif is_from_cache(resp): | |
show_progress = False | |
elif not total_length: | |
show_progress = True | |
elif total_length > (40 * 1000): | |
show_progress = True | |
else: | |
show_progress = False | |
chunks = response_chunks(resp, CONTENT_CHUNK_SIZE) | |
if not show_progress: | |
return chunks | |
renderer = get_download_progress_renderer(bar_type=progress_bar, size=total_length) | |
return renderer(chunks) | |
def sanitize_content_filename(filename: str) -> str: | |
""" | |
Sanitize the "filename" value from a Content-Disposition header. | |
""" | |
return os.path.basename(filename) | |
def parse_content_disposition(content_disposition: str, default_filename: str) -> str: | |
""" | |
Parse the "filename" value from a Content-Disposition header, and | |
return the default filename if the result is empty. | |
""" | |
m = email.message.Message() | |
m["content-type"] = content_disposition | |
filename = m.get_param("filename") | |
if filename: | |
# We need to sanitize the filename to prevent directory traversal | |
# in case the filename contains ".." path parts. | |
filename = sanitize_content_filename(str(filename)) | |
return filename or default_filename | |
def _get_http_response_filename(resp: Response, link: Link) -> str: | |
"""Get an ideal filename from the given HTTP response, falling back to | |
the link filename if not provided. | |
""" | |
filename = link.filename # fallback | |
# Have a look at the Content-Disposition header for a better guess | |
content_disposition = resp.headers.get("content-disposition") | |
if content_disposition: | |
filename = parse_content_disposition(content_disposition, filename) | |
ext: Optional[str] = splitext(filename)[1] | |
if not ext: | |
ext = mimetypes.guess_extension(resp.headers.get("content-type", "")) | |
if ext: | |
filename += ext | |
if not ext and link.url != resp.url: | |
ext = os.path.splitext(resp.url)[1] | |
if ext: | |
filename += ext | |
return filename | |
def _http_get_download(session: PipSession, link: Link) -> Response: | |
target_url = link.url.split("#", 1)[0] | |
resp = session.get(target_url, headers=HEADERS, stream=True) | |
raise_for_status(resp) | |
return resp | |
class Downloader: | |
def __init__( | |
self, | |
session: PipSession, | |
progress_bar: str, | |
) -> None: | |
self._session = session | |
self._progress_bar = progress_bar | |
def __call__(self, link: Link, location: str) -> Tuple[str, str]: | |
"""Download the file given by link into location.""" | |
try: | |
resp = _http_get_download(self._session, link) | |
except NetworkConnectionError as e: | |
assert e.response is not None | |
logger.critical( | |
"HTTP error %s while getting %s", e.response.status_code, link | |
) | |
raise | |
filename = _get_http_response_filename(resp, link) | |
filepath = os.path.join(location, filename) | |
chunks = _prepare_download(resp, link, self._progress_bar) | |
with open(filepath, "wb") as content_file: | |
for chunk in chunks: | |
content_file.write(chunk) | |
content_type = resp.headers.get("Content-Type", "") | |
return filepath, content_type | |
class BatchDownloader: | |
def __init__( | |
self, | |
session: PipSession, | |
progress_bar: str, | |
) -> None: | |
self._session = session | |
self._progress_bar = progress_bar | |
def __call__( | |
self, links: Iterable[Link], location: str | |
) -> Iterable[Tuple[Link, Tuple[str, str]]]: | |
"""Download the files given by links into location.""" | |
for link in links: | |
try: | |
resp = _http_get_download(self._session, link) | |
except NetworkConnectionError as e: | |
assert e.response is not None | |
logger.critical( | |
"HTTP error %s while getting %s", | |
e.response.status_code, | |
link, | |
) | |
raise | |
filename = _get_http_response_filename(resp, link) | |
filepath = os.path.join(location, filename) | |
chunks = _prepare_download(resp, link, self._progress_bar) | |
with open(filepath, "wb") as content_file: | |
for chunk in chunks: | |
content_file.write(chunk) | |
content_type = resp.headers.get("Content-Type", "") | |
yield link, (filepath, content_type) | |