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tilde-train.py
183
tilde-train.py
@ -1,17 +1,16 @@
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#!/usr/bin/env python3
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## _ _ _ _ _ _
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## | |_(_) |__| |___ | |_ _ _ __ _(_)_ _
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## | _| | / _` / -_)| _| '_/ _` | | ' \
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## _ _ _ _ _ _
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## | |_(_) |__| |___ | |_ _ _ __ _(_)_ _
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## | _| | / _` / -_)| _| '_/ _` | | ' \
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## \__|_|_\__,_\___(_)__|_| \__,_|_|_||_|
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##
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## tilde.train is an instance of TerminalTrain. It was originally developed
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## by cmccabe on tilde.town but is now maintained in tildegit with the main
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## development ocurring on rawtext.club.
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## by cmccabe on tilde.town (https://tildegit.org/cmccabe/TerminalTrain) but is now
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## maintained by vilmibm.
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##
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## If you want to contribute to code improvement, or if you have suggestions
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## for cmccabe, create a pull request here: https://tildegit.org/cmccabe/TerminalTrain
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## or email cmccabe at cmccabe@rawtext.club
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## If you want to contribute code improvements, create a pull request here:
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## https://git.tilde.town/vilmibm/tilde-train
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##
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## -----------------
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##
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@ -27,7 +26,7 @@
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## * turn main loop into a function, so cmd line arg reader can call it (with -p) and quit.
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## * figure out why tilde.train doesn't work in some terminals (sthg sthg unicode...)
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## * BUGFIX-1 - something about inclusion default cars adding extra "links" to the train.
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## * the -p (print train) option should print all cars, not limited to the max_cars value.
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## * the -p (print train) option should print all cars, not limited to the max_cars value.
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## * related to BUGFIX-1, that seems to impact spacers (links) between cars.
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## * allow users to create multiple frames so their cars can be animated (difficulty=med+)
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## * allow user configurable speed and number of train cars
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@ -43,6 +42,8 @@ import curses
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from signal import signal, SIGINT
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import time ## allowing the loop steps of train animation to be slowed
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import string ## for input validation
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from inspect import cleandoc
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from pathlib import Path
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traincarFN = ".choochoo"
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max_x = 35 ## max length of train car.
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@ -53,79 +54,84 @@ print_train = False ## print train to file (instead of the screen scroll)
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train = [""]*max_y ## empty train of correct height.
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cars = []
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engine = r""" ____
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|____| ------------
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| | === | ------ |
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___| |__| |_____| | O | |
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| | | |__/V\_| |
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[[ | |
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| | ------------ | ~town |
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|__|______________|__________|
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//// / _\__/__\__/__\ / \
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//// \__/ \__/ \__/ \__/ """
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engine = engine.split("\n")
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engine = [
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r" ____ ",
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r" |____| ------------",
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r" | | === | ------ |",
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r" ___| |__| |_____| | O | |",
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r" | | | |__/V\_| |",
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r" [[ | |",
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r" | | ------------ | ~town |",
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r" |__|______________|__________|",
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r" //// / _\__/__\__/__\ / \ ",
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r"//// \__/ \__/ \__/ \__/ ",
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]
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caboose = r""" ||
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============= ||
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=========| |==========
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| ---- ---- |
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| | | | | |
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| ---- ---- |
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| tilde.town railways |
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==| |==
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== - / \-/ \-----/ \-/ \ - ==
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\__/ \__/ \__/ \__/ """
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caboose = caboose.split("\n")
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default_car = r""" ----------------------------
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| |
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| YOUR TRAIN CAR HERE! |
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| Just create a |
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| ~/.choochoo file! |
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| __ __ __ __ |
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- / \-/ \------/ \-/ \ -
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\__/ \__/ \__/ \__/"""
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default_car = default_car.split("\n")
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caboose = [
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r" || ",
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r" ============= || ",
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r"=========| |========== ",
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r" | ---- ---- | ",
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r" | | | | | | ",
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r" | ---- ---- | ",
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r" | tilde.town railways | ",
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r"==| |== ",
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r"== - / \-/ \-----/ \-/ \ - == ",
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r" \__/ \__/ \__/ \__/ ",
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]
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default_car = [
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r" ---------------------------- ",
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r"| |",
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r"| YOUR TRAIN CAR HERE! |",
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r"| Just create a |",
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r"| ~/.choochoo file! |",
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r"| __ __ __ __ |",
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r" - / \-/ \------/ \-/ \ - ",
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r" \__/ \__/ \__/ \__/ ",
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]
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def print_help():
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print("")
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print("~ ~ Hooray! You've found the tilde.train! ~ ~")
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print("")
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print("To add your own car to a future train, create")
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print("a .choochoo file in your home directory and")
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print("make sure it is 'other' readable, for example:")
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print("")
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print(" chmod 644 ~/.choochoo")
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print("")
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print("The file should contain an ascii drawing of a")
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print("train car no more than " + str(max_x) + " characters wide")
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print("and " + str(max_y) + " characters tall.")
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print("")
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print("Only printable ascii characters are accepted for now.")
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print("Run the command again followed by a -t switch to test")
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print("your .choochoo file and report any non accepted chars.")
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print("")
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print("Each train contains a random selection of cars")
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print("from across tilde.town user home directories.")
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print("Don't worry, yours will be coming around the")
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print("bend soon!")
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print("")
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print("~ ~ ~ ~ ~ ~")
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print("")
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print(
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cleandoc(
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f"""
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~ ~ Hooray! You've found the tilde.train! ~ ~
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To add your own car to a future train, create
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a .choochoo file in your home directory and
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make sure it is 'other' readable, for example:
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chmod 644 ~/.choochoo
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The file should contain an ascii drawing of a
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train car no more than {max_x} characters wide
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and {max_y} characters tall.
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Only printable ascii characters are accepted for now.
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Run the command again followed by a -t switch to test
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your .choochoo file and report any non accepted chars.
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Each train contains a random selection of cars
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from across tilde.town user home directories.
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Don't worry, yours will be coming around the
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bend soon!
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~ ~ ~ ~ ~ ~
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"""
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)
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)
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def test_user_car():
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username = getpass.getuser()
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fname = "/home/" + username + "/" + traincarFN
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fname = Path.home() / traincarFN
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try:
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myfile = open(fname, 'r')
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except:
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print("ERROR: Couldn't open " + fname)
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print("Either it doesn't exist, or is not readble by the tilde.train script.")
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exit()
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choochoo_string = fname.read_text("utf-8")
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except OSError as err:
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raise OSError(
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f"Couldn't open {fname}\n"
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"Either it doesn't exist, or is not readble by the tilde.train script."
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) from err
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choochoo_string = myfile.read()
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choochoo_list = choochoo_string.split("\n")
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car = "\n".join(choochoo_list)
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@ -160,7 +166,7 @@ def test_user_car():
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print(string.printable.strip())
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print("")
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print("Yours contained " + bad_chars)
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exit()
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sys.exit(1)
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# print("")
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# print("Test results:")
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@ -171,27 +177,24 @@ def test_user_car():
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if train_height > max_y+1:
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print("FAIL. Your train car is too tall.")
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print("It should be no taller than " + str(max_y) + " lines in height.")
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myfile.close()
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exit()
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sys.exit(1)
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if train_length > max_x:
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print("FAIL. Your train car is too long.")
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print("It should be no longer than " + str(max_x) + " characters in length.")
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myfile.close()
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exit()
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sys.exit(1)
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print("PASS. Your train car will work on the tilde.town tracks! :)")
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myfile.close()
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exit()
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sys.exit()
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def link_car(car):
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def link_car(car: list[str]):
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for idx,row in enumerate(car):
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car[idx] = " " + row
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car[len(car)-3] = "+" + car[len(car)-3][1:]
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car[len(car)-2] = "+" + car[len(car)-2][1:]
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return car
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def validate_car(car):
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def validate_car(car: list[str]):
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## this function (1) checks that a train car isn't too tall or too long
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## (2) pads it vertically or on the right side if it is too short or if
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## not all lines are the same length and (3) removes bad characters.
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@ -241,20 +244,20 @@ def print_all_cars():
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choochoo_list = choochoo_string.split("\n")
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if len(choochoo_list) > max_y+1:
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continue ## the train car was too tall; skip it.
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car = validate_car(choochoo_list) ## printing is only a DEBUG feature.
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if car != 0:
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print("")
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print(fname + ":")
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print("\n".join(car)) ## print the car to stdout
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## HOW TO CLOSE THE FILE HANDLE? fname.close(), close(fname), ...?
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except:
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pass;
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# print "Cannot open " + fname # for debuggering purposes
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def chuggachugga(stdscr):
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def chuggachugga(stdscr: curses.window):
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curses.curs_set(0)
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h, w = stdscr.getmaxyx()
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x_pos = w-1
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@ -296,24 +299,24 @@ def chuggachugga(stdscr):
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def handler(signal_received, frame):
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print("Oops. The train broke. The engineer is looking into it!")
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print("(Note: the train does not work in all terminals yet.)")
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exit(0)
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sys.exit(1)
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default_car = validate_car(default_car)
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if len(sys.argv) == 2 and ("-h" in sys.argv[1] or "help" in sys.argv[1]):
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print_help()
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quit()
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sys.exit()
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if len(sys.argv) == 2 and ("-t" in sys.argv[1] or "test" in sys.argv[1]):
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test_user_car()
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quit()
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sys.exit()
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if len(sys.argv) == 2 and ("-p" in sys.argv[1] or "print" in sys.argv[1]):
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print_train = True
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if len(sys.argv) == 2 and ("-a" in sys.argv[1] or "all" in sys.argv[1]):
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print_all_cars()
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quit()
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sys.exit()
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## start a loop that collects all .choochoo files and processes on in each loop
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@ -362,7 +365,7 @@ if print_train:
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print("<pre>")
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print(train_str)
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print("</pre>")
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quit()
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sys.exit()
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pad_str = " "*train_len
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train.insert(0,pad_str)
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