def validate_xml(data, dtd_directory=None):
# Run xmllint to validate file
dtd_file = DTD_FILE
if dtd_directory is not None:
dtd_file = '%s/%s' % (dtd_directory, DTD_FILE)
p = Popen('xmllint --dtdvalid %s --noout -' % dtd_file,
stdout=PIPE,
stderr=PIPE,
stdin=PIPE,
shell=True)
p.stdin.write(data)
p.stdin.close()
[sys.stdout.write(x) for x in p.stdout.readlines()]
status = p.wait()
if posix.WIFSIGNALED(status) or posix.WEXITSTATUS(status) != 0:
return False
return True
def Wait(self):
# This is a list of async jobs
while True:
try:
pid, status = posix.wait()
except OSError as e:
#log('wait() error: %s', e)
if e.errno == errno.ECHILD:
return False # nothing to wait for caller should stop
elif e.errno == errno.EINTR:
# This happens when we register a handler for SIGINT, and thus never
# get the KeyboardInterrupt exception? Not sure why.
# Try
# $ cat # Now hit Ctrl-C
#log('Continuing')
continue # try again
else:
# An error we don't know about.
raise
else:
break # no exception thrown, so no need to retry
#log('WAIT got %s %s', pid, status)
# TODO: change status in more cases.
if posix.WIFSIGNALED(status):
if posix.WTERMSIG(status) == signal.SIGINT:
print()
elif posix.WIFEXITED(status):
status = posix.WEXITSTATUS(status)
#log('exit status: %s', status)
# This could happen via coding error. But this may legitimately happen
# if a grandchild outlives the child (its parent). Then it is reparented
# under this process, so we might receive notification of its exit, even
# though we didn't start it. We can't have any knowledge of such
# processes, so print a warning.
if pid not in self.callbacks:
util.warn("PID %d stopped, but osh didn't start it", pid)
return True # caller should keep waiting
callback = self.callbacks.pop(pid)
callback(pid, status)
self.last_status = status # for wait -n
return True # caller should keep waiting