def _copy_lines_between_files(fin, fout, n=None, skip=0, mode='a', terminal_line=""):
"""Copy lines from one file to another (which might be already open)
Returns open fout
"""
# on older Pythons and on some FSs st_mtime is int, so we should
# give it some time so polling filter could detect the change
mtimesleep()
if isinstance(fin, str): # pragma: no branch - only used with str in test cases
fin = open(fin, 'r')
# Skip
for i in xrange(skip):
_ = fin.readline()
# Read
i = 0
lines = []
while n is None or i < n:
l = fin.readline()
if terminal_line is not None and l == terminal_line:
break
lines.append(l)
i += 1
# Write: all at once and flush
if isinstance(fout, str):
fout = open(fout, mode)
fout.write('\n'.join(lines))
fout.flush()
# to give other threads possibly some time to crunch
time.sleep(0.1)
return fout
def _copy_lines_between_files(fin, fout, n=None, skip=0, mode='a', terminal_line=""):
"""Copy lines from one file to another (which might be already open)
Returns open fout
"""
# on older Pythons and on some FSs st_mtime is int, so we should
# give it some time so polling filter could detect the change
mtimesleep()
if isinstance(fin, str): # pragma: no branch - only used with str in test cases
fin = open(fin, 'r')
# Skip
for i in xrange(skip):
_ = fin.readline()
# Read
i = 0
lines = []
while n is None or i < n:
l = fin.readline()
if terminal_line is not None and l == terminal_line:
break
lines.append(l)
i += 1
# Write: all at once and flush
if isinstance(fout, str):
fout = open(fout, mode)
fout.write('\n'.join(lines))
fout.flush()
# to give other threads possibly some time to crunch
time.sleep(0.1)
return fout
def testNewChangeViaIsModified(self):
# it is a brand new one -- so first we think it is modified
self.assertTrue(self.isModified())
# but not any longer
self.assertTrue(self.notModified())
self.assertTrue(self.notModified())
mtimesleep() # to guarantee freshier mtime
for i in range(4): # few changes
# unless we write into it
self.file.write("line%d\n" % i)
self.file.flush()
self.assertTrue(self.isModified())
self.assertTrue(self.notModified())
mtimesleep() # to guarantee freshier mtime
os.rename(self.name, self.name + '.old')
# we are not signaling as modified whenever
# it gets away
self.assertTrue(self.notModified())
f = open(self.name, 'a')
self.assertTrue(self.isModified())
self.assertTrue(self.notModified())
mtimesleep()
f.write("line%d\n" % i)
f.flush()
self.assertTrue(self.isModified())
self.assertTrue(self.notModified())
_killfile(f, self.name)
_killfile(self.name, self.name + '.old')
pass
def testNewChangeViaIsModified(self):
# it is a brand new one -- so first we think it is modified
self.assertTrue(self.isModified())
# but not any longer
self.assertTrue(self.notModified())
self.assertTrue(self.notModified())
mtimesleep() # to guarantee freshier mtime
for i in range(4): # few changes
# unless we write into it
self.file.write("line%d\n" % i)
self.file.flush()
self.assertTrue(self.isModified())
self.assertTrue(self.notModified())
mtimesleep() # to guarantee freshier mtime
os.rename(self.name, self.name + '.old')
# we are not signaling as modified whenever
# it gets away
self.assertTrue(self.notModified())
f = open(self.name, 'a')
self.assertTrue(self.isModified())
self.assertTrue(self.notModified())
mtimesleep()
f.write("line%d\n" % i)
f.flush()
self.assertTrue(self.isModified())
self.assertTrue(self.notModified())
_killfile(f, self.name)
_killfile(self.name, self.name + '.old')
pass
def _sleep_4_poll(self): # Since FilterPoll relies on time stamps and some # actions might be happening too fast in the tests, # sleep a bit to guarantee reliable time stamps if isinstance(self.filter, FilterPoll): mtimesleep()
def _sleep_4_poll(self): # Since FilterPoll relies on time stamps and some # actions might be happening too fast in the tests, # sleep a bit to guarantee reliable time stamps if isinstance(self.filter, FilterPoll): mtimesleep()