def obey(command, prefix, replay=False, do_record=False):
"""Call function from commands_db mapped to command's first token.
Tokenize command string with shlex.split(comments=True). If replay is set,
a non-meta command from the commands_db merely triggers obey() on the next
command from the records file. If not, non-meta commands set
io_db["worldstate_updateable"] to world_db["WORLD_ACTIVE"], and, if
do_record is set, are recorded to io_db["record_chunk"], and save_world()
is called (and io_db["record_chunk"] written) if io_db["save_wait"] seconds
have passed since the last time it was called. The prefix string is
inserted into the server's input message between its beginning 'input ' and
':'. All activity is preceded by a server_test() call. Commands that start
with a lowercase letter are ignored when world_db["WORLD_ACTIVE"] is
False/0.
"""
import shlex
from server.config.commands import commands_db
server_test()
if io_db["verbose"]:
print("input " + prefix + ": " + command)
try:
tokens = shlex.split(command, comments=True)
except ValueError as err:
print("Can't tokenize command string: " + str(err) + ".")
return
if len(tokens) > 0 and tokens[0] in commands_db \
and len(tokens) == commands_db[tokens[0]][0] + 1:
if commands_db[tokens[0]][1]:
commands_db[tokens[0]][2](*tokens[1:])
elif tokens[0][0].islower() and not world_db["WORLD_ACTIVE"]:
print("Ignoring lowercase-starting commands when world inactive.")
elif replay:
print("Due to replay mode, reading command as 'go on in record'.")
line = io_db["file_record"].readline()
if len(line) > 0:
obey(
line.rstrip(), io_db["file_record"].prefix +
str(io_db["file_record"].line_n))
io_db["file_record"].line_n = io_db["file_record"].line_n + 1
else:
print("Reached end of record file.")
else:
commands_db[tokens[0]][2](*tokens[1:])
if do_record:
io_db["record_chunk"] += command + "\n"
if time.time() > io_db["save_wait_start"] + io_db["save_wait"]:
atomic_write(io_db["path_record"],
io_db["record_chunk"],
do_append=True)
if world_db["WORLD_ACTIVE"]:
save_world()
io_db["record_chunk"] = ""
io_db["save_wait_start"] = time.time()
io_db["worldstate_updateable"] = world_db["WORLD_ACTIVE"]
elif 0 != len(tokens):
print("Invalid command/argument, or bad number of tokens: " + command)
def obey(command, prefix, replay=False, do_record=False):
"""Call function from commands_db mapped to command's first token.
Tokenize command string with shlex.split(comments=True). If replay is set,
a non-meta command from the commands_db merely triggers obey() on the next
command from the records file. If not, non-meta commands set
io_db["worldstate_updateable"] to world_db["WORLD_ACTIVE"], and, if
do_record is set, are recorded to io_db["record_chunk"], and save_world()
is called (and io_db["record_chunk"] written) if io_db["save_wait"] seconds
have passed since the last time it was called. The prefix string is
inserted into the server's input message between its beginning 'input ' and
':'. All activity is preceded by a server_test() call. Commands that start
with a lowercase letter are ignored when world_db["WORLD_ACTIVE"] is
False/0.
"""
import shlex
from server.config.commands import commands_db
server_test()
if io_db["verbose"]:
print("input " + prefix + ": " + command)
try:
tokens = shlex.split(command, comments=True)
except ValueError as err:
print("Can't tokenize command string: " + str(err) + ".")
return
if len(tokens) > 0 and tokens[0] in commands_db \
and len(tokens) == commands_db[tokens[0]][0] + 1:
if commands_db[tokens[0]][1]:
commands_db[tokens[0]][2](*tokens[1:])
elif tokens[0][0].islower() and not world_db["WORLD_ACTIVE"]:
print("Ignoring lowercase-starting commands when world inactive.")
elif replay:
print("Due to replay mode, reading command as 'go on in record'.")
line = io_db["file_record"].readline()
if len(line) > 0:
obey(line.rstrip(), io_db["file_record"].prefix
+ str(io_db["file_record"].line_n))
io_db["file_record"].line_n = io_db["file_record"].line_n + 1
else:
print("Reached end of record file.")
else:
commands_db[tokens[0]][2](*tokens[1:])
if do_record:
io_db["record_chunk"] += command + "\n"
if time.time() > io_db["save_wait_start"] + io_db["save_wait"]:
atomic_write(io_db["path_record"], io_db["record_chunk"],
do_append=True)
if world_db["WORLD_ACTIVE"]:
save_world()
io_db["record_chunk"] = ""
io_db["save_wait_start"] = time.time()
io_db["worldstate_updateable"] = world_db["WORLD_ACTIVE"]
elif 0 != len(tokens):
print("Invalid command/argument, or bad number of tokens: " + command)
def read_command():
"""Return next newline-delimited command from server in file.
Keep building return string until a newline is encountered. Pause between
unsuccessful reads, and after too much waiting, run server_test().
"""
wait_on_fail = io_db["wait_on_read_fail"]
max_wait = io_db["max_wait_on_read_fail"]
now = time.time()
command = ""
while True:
add = io_db["file_in"].readline()
if len(add) > 0:
command = command + add
if len(command) > 0 and "\n" == command[-1]:
command = command[:-1]
break
else:
time.sleep(wait_on_fail)
if now + max_wait < time.time():
server_test()
now = time.time()
return command
def read_command():
"""Return next newline-delimited command from server in file.
Keep building return string until a newline is encountered. Pause between
unsuccessful reads, and after too much waiting, run server_test().
"""
wait_on_fail = io_db["wait_on_read_fail"]
max_wait = io_db["max_wait_on_read_fail"]
now = time.time()
command = ""
while True:
add = io_db["file_in"].readline()
if len(add) > 0:
command = command + add
if len(command) > 0 and "\n" == command[-1]:
command = command[:-1]
break
else:
time.sleep(wait_on_fail)
if now + max_wait < time.time():
server_test()
now = time.time()
return command
def safely_remove_worldstate_file():
from server.io import server_test
if os.access(io_db["path_worldstate"], os.F_OK):
server_test()
os.remove(io_db["path_worldstate"])
def safely_remove_worldstate_file():
from server.io import server_test
if os.access(io_db["path_worldstate"], os.F_OK):
server_test()
os.remove(io_db["path_worldstate"])