+import argparse
import errno
import os
+import shlex
import time
-class HandledException(Exception):
- """Feature-less Exception child. Use for expected operational errors."""
-
- pass
-
-
def setup_server_io(io_db):
"""Fill IO files DB with proper file( path)s. Write process IO test string.
def cleanup_server_io(io_db):
- """Close and remove all files in IO files DB."""
- io_db["file_out"].close()
- os.remove(io_db["path_out"])
- io_db["file_in"].close()
- os.remove(io_db["path_in"])
- if "file_worldstate" in io_db: # This file's only set up
- io_db["file_worldstate"].close() # properly when the game
- if os.access(io_db["path_worldstate"], os.F_OK): # world is active, which
- os.remove(io_db["path_worldstate"]) # is not guaranteed.
+ """Close and remove all files open in IO files DB."""
+ def helper(file_key, path_key):
+ if file_key in io_db:
+ io_db[file_key].close()
+ os.remove(io_db[path_key])
+ helper("file_out", "path_out")
+ helper("file_in", "path_in")
+ helper("file_worldstate", "path_worldstate")
def detect_atomic_leftover(path):
- """Raise HandledException if file is found at path + "_tmp"."""
+ """Raise explained SystemExit if file is found at path + "_tmp"."""
path_tmp = path + "_tmp"
msg = "Found file '" + path_tmp + "' that may be a leftover from an " \
"aborted previous attempt to write '" + path + "'. Aborting until " \
"the matter is resolved by removing it from its current path."
if os.access(path_tmp, os.F_OK):
- raise HandledException(msg)
+ raise SystemExit(msg)
+
+
+def obey(cmd, io_db, path_recordfile):
+ """"""
+ print("Input: " + cmd)
+ tokens = shlex.split(cmd)
+ if "QUIT" == tokens[0] and 1 == len(tokens):
+ raise SystemExit("received QUIT command")
+ elif "PING" == tokens[0] and 1 == len(tokens):
+ io_db["file_out"].write("PONG\n")
+ elif "MAKE_WORLD" == tokens[0] and 2 == len(tokens):
+ print("I would generate a new world now, if only I knew how.")
+ record(cmd, path_recordfile)
+ else:
+ print("Invalid command/argument, or bad number of tokens.")
+
+
+def record(cmd, path_recordfile):
+ """Append cmd string plus newline to file at path_recordfile."""
+ file = open(path_recordfile, "a")
+ file.write(cmd + "\n")
+ file.close()
+
io_db = {}
try:
- print("DUMMY: Obey command-line arguments.")
- print("DUMMY: Open files.")
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-s', nargs='?', type=int, dest='replay', const=1,
+ action='store')
+ opts, unknown = parser.parse_known_args()
setup_server_io(io_db)
- print("DUMMY: Run game.")
+ # print("DUMMY: Run game.")
path_recordfile = "recordfile"
path_savefile = "savefile"
detect_atomic_leftover(path_savefile)
detect_atomic_leftover(path_recordfile)
- if os.access(path_savefile, os.F_OK):
+ if None != opts.replay:
+ if opts.replay < 1:
+ opts.replay = 1
+ print("Replay mode. Auto-replaying up to turn " + str(opts.replay) +
+ " (if so late a turn is to be found).")
+ if not os.access(path_recordfile, os.F_OK):
+ raise SystemExit("No record file found to replay.")
+ elif os.access(path_savefile, os.F_OK):
print(open(path_savefile, "r").read())
else:
- msg = "MAKE_WORLD " + str(int(time.time()))
- print(msg)
-except HandledException as exception:
- print("Error:")
- print(exception.args[0])
+ obey("MAKE_WORLD " + str(int(time.time())), io_db, path_recordfile)
+except SystemExit as exit:
+ print("ABORTING: " + exit.args[0])
except:
- print("SOMETHING WENT WRONG\n")
+ print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
raise
finally:
cleanup_server_io(io_db)
- print("DUMMY: (Clean up C heap.)")
+ # print("DUMMY: (Clean up C heap.)")