def get_max_path_length(top_path=None, maxl=1000):
"""Deduce the maximal length of the filename in a given path
"""
if not top_path:
top_path = getpwd()
import random
from datalad import lgr
from datalad.dochelpers import exc_str
from datalad.support import path
prefix = path.join(top_path, "dl%d" % random.randint(1, 100000))
# some smart folks could implement binary search for this
max_path_length = None
for i in range(maxl - len(prefix)):
filename = prefix + '_' * i
path_length = len(filename)
try:
with open(filename, 'w') as f:
max_path_length = path_length
except Exception as exc:
lgr.debug(
"Failed to create sample file for length %d. Last succeeded was %s. Exception: %s",
path_length, max_path_length, exc_str(exc))
break
unlink(filename)
return max_path_length
def get_max_path_length(top_path=None, maxl=1000):
"""Deduce the maximal length of the filename in a given path
"""
if not top_path:
top_path = getpwd()
import os
import random
from datalad import lgr
from datalad.dochelpers import exc_str
from datalad.support import path
prefix = path.join(top_path, "dl%d" % random.randint(1 ,100000))
# some smart folks could implement binary search for this
max_path_length = None
for i in range(maxl-len(prefix)):
filename = prefix + '_' * i
path_length = len(filename)
try:
with open(filename, 'w') as f:
max_path_length = path_length
except Exception as exc:
lgr.debug(
"Failed to create sample file for length %d. Last succeeded was %s. Exception: %s",
path_length, max_path_length, exc_str(exc))
break
unlink(filename)
return max_path_length