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Add support for more special filenames like Windows's "con".

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This commit is contained in:
Ethan Dalool 2020-09-25 15:43:36 -07:00
parent 677d8a251f
commit 3deb6270ba
1 changed files with 23 additions and 6 deletions
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25
voussoirkit/downloady.py
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@ -6,8 +6,9 @@ import urllib
import warnings
from voussoirkit import bytestring
from voussoirkit import ratelimiter
from voussoirkit import clipext
from voussoirkit import pathclass
from voussoirkit import ratelimiter
from voussoirkit import safeprint
warnings.simplefilter('ignore')
@ -25,6 +26,11 @@ TEMP_EXTENSION = '.downloadytemp'
PRINT_LIMITER = ratelimiter.Ratelimiter(allowance=5, mode='reject')
SPECIAL_FILENAMES = [os.devnull]
if os.name == 'nt':
SPECIAL_FILENAMES.append('con')
SPECIAL_FILENAMES = [os.path.normcase(x) for x in SPECIAL_FILENAMES]
class NotEnoughBytes(Exception):
pass
@ -50,7 +56,8 @@ def download_file(
if os.path.isdir(localname):
localname = os.path.join(localname, basename_from_url(url))
localname = sanitize_filename(localname)
if localname != os.devnull:
if not is_special_file(localname):
localname = os.path.abspath(localname)
if verbose:
@ -80,7 +87,10 @@ def download_plan(plan):
directory = os.path.split(localname)[0]
if directory != '':
os.makedirs(directory, exist_ok=True)
if not is_special_file(localname):
touch(localname)
if plan['plan_type'] in ['resume', 'partial']:
file_handle = open(localname, 'r+b')
file_handle.seek(plan['seek_to'])
@ -124,8 +134,8 @@ def download_plan(plan):
file_handle.close()
# Don't try to rename /dev/null
if os.devnull not in [localname, plan['real_localname']]:
# Don't try to rename /dev/null or other special names
if not is_special_file(localname) and not is_special_file(plan['real_localname']):
localsize = os.path.getsize(localname)
undersized = plan['plan_type'] != 'partial' and localsize < plan['remote_total_bytes']
if plan['raise_for_undersized'] and undersized:
@ -155,12 +165,16 @@ def prepare_plan(
headers = headers or {}
user_provided_range = 'range' in headers
real_localname = localname
if is_special_file(localname):
temp_localname = localname
else:
temp_localname = localname + TEMP_EXTENSION
real_exists = os.path.exists(real_localname)
if real_exists and overwrite is False and not user_provided_range:
print('File exists and overwrite is off. Nothing to do.')
return None
temp_exists = os.path.exists(temp_localname)
real_localsize = int(real_exists and os.path.getsize(real_localname))
temp_localsize = int(temp_exists and os.path.getsize(temp_localname))
@ -349,6 +363,9 @@ def get_permission(prompt='y/n\n>', affirmative=['y', 'yes']):
permission = input(prompt)
return permission.lower() in affirmative
def is_special_file(filename):
return os.path.normcase(filename) in SPECIAL_FILENAMES
def request(method, url, stream=False, headers=None, timeout=TIMEOUT, verify_ssl=True, **kwargs):
if headers is None:
headers = {}