def exercise_retrieve_unless_exists():
import urllib
filehandle, filename = tempfile.mkstemp(prefix='kings_of_france')
# we will need to pass filename to functions which will open it
# on Windows this causes a permission exception
os.close(filehandle)
with open(filename, 'w') as f:
f.write(
'Henri IV, Louis XIII, Louis XIV, Louis XV, Louis XVI, Louis XVIII')
digestname = os.path.join(os.path.dirname(f.name), 'digests.txt')
with open(digestname, 'w') as f:
f.writelines([
('%s %s\n') %
(os.path.basename(filename), utils.md5_hexdigest(filename)),
'something_else yyyyyyy',
])
os.chmod(digestname,
os.stat(digestname).st_mode | stat.S_IWGRP | stat.S_IWOTH)
d = tempfile.mkdtemp()
targetname = os.path.join(d, 'target')
try: os.remove(targetname)
except Exception: pass
url = 'file:' + urllib.pathname2url(filename)
assert (utils.retrieve_unless_exists(url=url, filename=targetname) ==
"Downloaded")
with open(filename) as source, open(targetname) as target:
assert source.read() == target.read()
assert (utils.retrieve_unless_exists(url=url, filename=targetname) ==
"Cached")
with open(filename) as source, open(targetname) as target:
assert source.read() == target.read()
def exercise_retrieve_unless_exists():
import urllib
filehandle, filename = tempfile.mkstemp(prefix='kings_of_france')
# we will need to pass filename to functions which will open it
# on Windows this causes a permission exception
os.close(filehandle)
with open(filename, 'w') as f:
f.write(
'Henri IV, Louis XIII, Louis XIV, Louis XV, Louis XVI, Louis XVIII')
digestname = os.path.join(os.path.dirname(f.name), 'digests.txt')
with open(digestname, 'w') as f:
f.writelines([
('%s %s\n') %
(os.path.basename(filename), utils.md5_hexdigest(filename)),
'something_else yyyyyyy',
])
os.chmod(digestname,
os.stat(digestname).st_mode | stat.S_IWGRP | stat.S_IWOTH)
d = tempfile.mkdtemp()
targetname = os.path.join(d, 'target')
try: os.remove(targetname)
except Exception: pass
url = 'file:' + urllib.pathname2url(filename)
assert (utils.retrieve_unless_exists(url=url, filename=targetname) ==
"Downloaded")
with open(filename) as source, open(targetname) as target:
assert source.read() == target.read()
assert (utils.retrieve_unless_exists(url=url, filename=targetname) ==
"Cached")
with open(filename) as source, open(targetname) as target:
assert source.read() == target.read()