The command string is tokenized by 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. Non-meta commands are recorded in
- non-replay mode if do_record is set. The prefix string is inserted into the
- server's input message between its beginning 'input ' and ':'. All activity
- is preceded by a call to server_test().
+ next command from the records file. If not, and do do_record is set,
+ non-meta commands are recorded via record(), and save_world() is called.
+ The prefix string is inserted into the server's input message between its
+ beginning 'input ' & ':'. All activity is preceded by a server_test() call.
"""
server_test()
print("input " + prefix + ": " + command)
commands_db[tokens[0]][2]()
if do_record:
record(command)
+ save_world()
else:
print("Invalid command/argument, or bad number of tokens.")
+def atomic_write(path, text, do_append=False):
+ """Atomic write of text to file at path, appended if do_append is set."""
+ path_tmp = path + io_db["tmp_suffix"]
+ mode = "w"
+ if do_append:
+ mode = "a"
+ if os.access(path, os.F_OK):
+ shutil.copyfile(path, path_tmp)
+ file = open(path_tmp, mode)
+ file.write(text)
+ file.flush()
+ os.fsync(file.fileno())
+ file.close()
+ if os.access(path, os.F_OK):
+ os.remove(path)
+ os.rename(path_tmp, path)
+
+
def record(command):
"""Append command string plus newline to record file. (Atomic.)"""
# This misses some optimizations from the original record(), namely only
# finishing the atomic write with expensive flush() and fsync() every 15
# seconds unless explicitely forced. Implement as needed.
- path_tmp = io_db["path_record"] + io_db["tmp_suffix"]
- if os.access(io_db["path_record"], os.F_OK):
- shutil.copyfile(io_db["path_record"], path_tmp)
- file = open(path_tmp, "a")
- file.write(command + "\n")
- file.flush()
- os.fsync(file.fileno())
- file.close()
- if os.access(io_db["path_record"], os.F_OK):
- os.remove(io_db["path_record"])
- os.rename(path_tmp, io_db["path_record"])
+ atomic_write(io_db["path_record"], command + "\n", do_append=True)
+
+
+def save_world():
+ # Dummy for saving all commands to reconstruct current world state.
+ # Misses same optimizations as record() from the original record().
+ atomic_write(io_db["path_save"], "bla\n")
def obey_lines_in_file(path, name, do_record=False):
if not os.access(io_db["path_record"], os.F_OK):
raise SystemExit("No record file found to replay.")
io_db["file_record"] = open(io_db["path_record"], "r")
- io_db["file_record"].prefix = "recod file line "
+ io_db["file_record"].prefix = "record file line "
io_db["file_record"].line_n = 1
while world_db["turn"] < opts.replay:
line = io_db["file_record"].readline()