Initial commit

I was dumb and didn't start committing as soon as I started. vgstash is
considered ready for 0.1 and beta usage. There's a somewhat long road
ahead, but I look forward to making this tool finally come to fruition.

6 files changed, 1376 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0fd1bcf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/*.sw?
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..16f9dc6
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+zlg, gopher://zelibertinegamer.me
+    Original author, maintainer
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/README.mdown b/README.mdown
new file mode 100644
index 0000000..7d617c6
--- /dev/null
+++ b/README.mdown
@@ -0,0 +1,257 @@
+vgstash is a tool used to keep track of a video game collection. In addition to
+basic inventory maintenance, vgstash supports the ability to clarify whether or
+not the user owns a game, and their progress through said game. This makes it
+easy to manage a backlog and serve as a "memory" for which games someone has
+finished.
+
+# Concept
+
+Essentially, vgstash just gets out of your way and lets you manage things.
+Nothing fancy like box art or finding games in a massive dropdown box. There are
+easy flags to track common searches, like "All games that are owned and haven't
+been beaten", making vgstash convenient.
+
+Since vgstash itself is just a front-end to an SQLite dataabase, other
+interfaces to this basic database format can be built to extend the basic
+concept. SQLite is supported across tons of languages and platforms, so it's
+rather trivial to build another frontend to it. If that's not enough, vgstash 
+also supports exporting collections as YAML or pipe-delimited lines, and 
+importing from YAML. This makes batch-editing by a human easy with YAML, and the 
+raw format is great for pushing vgstash's output through pipes, as any good 
+\*nix tool should.
+
+## Data Format
+
+The key to managing things is keeping it simple, but flexible enough to give you
+meaningful insight to the data itself. vgstash gets straight to business
+with its data format:
+
+* Name (string)
+* System (string)
+* Ownership (boolean)
+* Completion Level (integer)
+    * 0 (Fresh)
+    * 1 (In Progress)
+    * 2 (Beaten)
+    * 3 (Completed)
+
+There isn't a hard limit on the length of the Name or System strings. SQLite 
+itself, however, has internal limits. Those limits may differ between platforms, 
+so there's no guarantee that vgstash databases will work across them.
+
+# Usage
+
+Using vgstash is fairly easy, for a command-line program. It accepts
+a handful of commands, which will be explained below:
+
+* init
+* add
+* update
+* delete
+* list
+* import
+* export
+
+## Tips
+
+For the sake of accessibility and ease of use, there are some synonyms:
+
+When specifying ownership, `0` (zero) and `n` mean the same thing. The same is
+true of `1` (one) and `y`.
+
+When specifying progress, the numbers and letters can both be used:
+
+`0` is also `f` or "fresh".  
+`1` is also `i` (lowercase I) or "in-progress".  
+`2` is also `b` (lowercase B) or "beaten".  
+`3` is also `c` (lowercase C) or "completed".
+
+Since vgstash relies on the shell and SQLite to function, unquoted strings 
+are likely to not be handled well. If your data ever looks funky, try correcting 
+it with a quoted string. Bugs or issues that are reported without quoted strings 
+will be discarded as WONTFIX, as that's basic, sane practice in every shell 
+under the sun.
+
+## Getting Started
+
+Initialize the database, where your information will be stored:
+
+~~~
+vgstash init
+~~~
+
+The location of the database may be set using an environment variable. To learn 
+more, see the Environment Variables section.
+
+## Adding
+
+Next, add a game or two:
+
+~~~
+vgstash add "Super Mario Bros" NES yes i
+~~~
+
+In the above example, we're adding *Super Mario Bros* for the NES system. We own 
+it, and haven't beaten it yet.
+
+Let's add another:
+
+~~~
+vgstash add "Borderlands 2" PC
+~~~
+
+This command has just the basics: game name, and game platform. For the sake of 
+simplicity, the ownership and progress flags have default values: ownership 
+defaults to "yes" and progress defaults to "in progress". In both cases, they 
+are the most typical state for a video game to be added to ones collection. This 
+can be influenced; see the Environment Variables section for more info.
+
+## Listing
+
+vgstash has plenty of methods to interface with your game collection. The 
+simplest listing would be "list every game in the database":
+
+~~~
+# The 'all' is optional
+vgstash list all
+~~~
+
+This will output a human-readable list of games you have in the database, with
+proper flags and unique IDs, which will come in handy later. For ease of use,
+`list all` will sort by system, then by title. Here's an example:
+
+~~~
+ID | Title               | System | Own | Progress
+---+---------------------+--------+-----+----------
+3  | Metroid             | NES    | *   |   I
+1  | Super Mario Bros    | NES    |     |       C
+2  | The Legend of Zelda | NES    | *   |     B
+4  | Borderlands         | PC     | *   | F
+~~~
+
+From the above output, we can gather that we don't own *Super Mario Bros* 
+anymore. It's been completed, however, so that's good news. We own *Zelda*, and 
+it's been beaten, but not completed. We also own *Metroid*, but it's still 
+in-progress. Lastly, we own Borderlands for the PC, but haven't started playing 
+it yet.
+
+The output format is designed to be easy to read, and omits information to serve
+as a visual guide whenever possible. From a single glance, you should be able to
+spot which games you own and which haven't been started yet.
+
+### List Filtering
+
+Seeing all of your games is great when you're just getting started, but what 
+about after you've added your massive 500 game collection? Nobody wants to sort 
+through screenfulls of text. That's where filtering comes in. The `list` command 
+accepts the following filters:
+
+* **completed**  
+    List games that have been completed.
+
+* **done**  
+List games that have been beaten *or* completed.
+
+* **owned**  
+List games that you own.
+
+* **unowned**  
+List games that you don't own.
+
+* **wishlist**  
+List games that you don't own AND are fresh.
+
+* **incomplete**  
+List games that have been beaten, but not completed, that you also own.
+
+* **backlog**  
+List games that have not been beaten or completed, that you also own.
+
+## Update
+
+The `update` command requires the game's ID, the field you're changing, and the 
+value you're changing it to.
+
+The fields you can change are
+
+* title
+* system
+* ownership
+* progress
+
+As explained in **Data Format**, ownership and progress can use single letters 
+to substitute for the internal numeric representations.
+
+To get a game's ID, try using something like `vgstash list | grep "foo"` to find
+what you're looking for.
+
+## Deleting
+
+For one reason or another, you may need to remove items from your game database.
+The `delete` command, coupled with the game's ID, will take care of that for
+you. If you want to remove *every* game from your collection, delete the
+`.vgstash.db` file from your $HOME directory (or whatever `VGSTASH_DB_LOCATION`
+is set to) and start over with `vgstash init`.
+
+# Environment Variables
+
+Customization is pretty important if you're going to manage hundreds of games. 
+There are only a few, but they may come in handy for you!
+
+* `VGSTASH_DB_LOCATION`  
+    Defaults to `$HOME`. A file named `.vgstash.db` will be found there.
+
+* `VGSTASH_DEFAULT_OWNERSHIP`  
+    Can be 0 or 1. Default is 1 (yes).
+
+* `VGSTASH_DEFAULT_PROGRESS`  
+    Can be 0 through 3. Default is 1 (in-progress).
+
+* `VGSTASH_TABLE_WIDTH`  
+    The width of the table output by the `list` command. For readability 
+reasons, vgstash will only allow values that are 50 or above. If this variable 
+is set to zero (0) however, it will expand to fit the entire width of your 
+terminal/tty. It defaults to 80 characters.
+
+# Contributing
+
+vgstash was first written in Python 3.4. There are no plans to produce a Python 
+2.x version. Patches and pull requests are welcome! However, please do not 
+contribute to this project unless you are fine with your contributions also 
+being licensed under the GPL 3.0. This is to simplify licensing issues and keep 
+things neat.
+
+Before submitting a Pull Request, please ensure that your commit(s) contain
+an addition of your name to the `AUTHORS` file. Others may not use GitHub (or
+even git) to get or use vgstash, and every contributor deserves recognition. An
+example of what one would add to the `AUTHORS` file is:
+
+~~~
+John Q. Public, GitHub: @hellomynameisjohn <jqp@genericville.com>
+    Corrected typos in manpage
+~~~
+
+Note that the indent is four spaces.
+
+# Roadmap
+
+vgstash is considered beta-quality at this time. Please report any issues, bugs, 
+or even suggestions on how to improve vgstash.
+
+One feature that will not be built (at least by zlg) is search functionality. 
+Since vgstash cooperates with piping, it's trivial to pass its output through 
+other programs and get the fine-grained information a more advanced user may 
+need.
+
+Here are the current goals:
+
+* manpage
+* bash-completion file
+* refined argument handling for shorthand commands
+
+# Copyright
+
+vgstash is Copyright © 2016 Ze Libertine Gamer. It is licensed under the GNU
+General Public License, version 3.0. A copy of this license may be found in the
+`COPYING` file within this project. It may also be found on the World Wide Web
+at http://gnu.org/licenses/gpl-3.0.html.
diff --git a/scripts/system-search.sh b/scripts/system-search.sh
new file mode 100755
index 0000000..329ead9
--- /dev/null
+++ b/scripts/system-search.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# system-search.sh: List all games from a specific system
+
+# Accepts either one argument (the system name), or the filter to send
+# to vgstash and then the system name.
+
+show_help() {
+	cat <<-FOOBAR
+	system-search.sh [filter] SYSTEM
+
+	filter:   The filter to pass to vgstash. "all" by default
+	SYSTEM:   The value in the System column to search for. Accepts
+	          awk-style regex.
+
+	For example, to check which games for the NES that are in progress,
+	you would do:
+
+	system-search.sh incomplete NES
+FOOBAR
+}
+
+case $# in
+	1)
+		filter="all"
+		system="$1"
+		;;
+	2)
+		filter="$1"
+		system="$2"
+		;;
+	*)
+		show_help
+		;;
+esac
+
+vgstash list "${filter}" | awk -F '|' "\$3 ~ \"${system}\""
diff --git a/vgstash b/vgstash
new file mode 100755
index 0000000..c1775d6
--- /dev/null
+++ b/vgstash
@@ -0,0 +1,405 @@
+#!/usr/bin/env python3
+
+# TODO: Consider putting all help messages into a dict for easier management
+# TODO: Decide on docstring delimiter and stick to it
+
+import sys
+import os
+import sqlite3
+import argparse
+import yaml
+import subprocess # to handle the piping use case
+
+DB_LOCATION = ''
+OWNERSHIP = 1
+PROGRESS = 1
+TABLE_WIDTH = 80
+
+def set_env():
+    '''Ensures environment variables are respected. Sets defaults if
+    they're not present. If the defaults are not usable, it throws an
+    AssertionError and alerts the user.'''
+    # This makes outside-scope referencing and assignment possible
+    global DB_LOCATION, OWNERSHIP, PROGRESS, TABLE_WIDTH
+
+    # Precedence = $VGSTASH_DB_LOCATION, $HOME, or current directory
+    DB_LOCATION = os.getenv('VGSTASH_DB_LOCATION', os.getenv('HOME', os.getcwd()))
+
+    try:
+        assert(os.path.isdir(DB_LOCATION))
+    except AssertionError:
+        print("VGSTASH_DB_LOCATION is not a valid directory. Unset it to fall back to $HOME, or correct the environment variable.")
+        sys.exit()
+
+    DB_LOCATION = os.path.join(DB_LOCATION, ".vgstash.db")
+
+    OWNERSHIP = int(os.getenv('VGSTASH_DEFAULT_OWNERSHIP', OWNERSHIP))
+    try:
+        assert(OWNERSHIP == 0 or OWNERSHIP == 1)
+    except AssertionError:
+        print("VGSTASH_DEFAULT_OWNERSHIP is not zero or one. Ensure your variable is set correctly.")
+        sys.exit()
+
+    PROGRESS = int(os.getenv('VGSTASH_DEFAULT_PROGRESS', PROGRESS))
+    try:
+        assert(PROGRESS >= 0 and PROGRESS <= 3)
+    except AssertionError:
+        print("VGSTASH_DEFAULT_PROGRESS is not between zero and three. Ensure your variable is set correctly.")
+        sys.exit()
+
+    TABLE_WIDTH = int(os.getenv('VGSTASH_TABLE_WIDTH', TABLE_WIDTH))
+    try:
+        assert(TABLE_WIDTH >= 50 or TABLE_WIDTH == 0)
+    except AssertionError:
+        print("VGSTASH_TABLE_WIDTH must be a number that's zero, or a number that's 50 or greater, to facilitate readability. A value of zero will use your terminal's width.")
+        sys.exit()
+
+def init_db(args):
+    '''Creates the database schema and the relevant views, preparing it
+    for use with vgstash. Will not overwrite an extant database.'''
+
+    # Confirm we can create the file
+    try:
+        assert(os.path.isfile(DB_LOCATION) == False)
+        conn = sqlite3.connect(DB_LOCATION)
+        print("DB successfully connected!")
+    except sqlite3.OperationalError:
+        print("The database could not be created and/or connected to.")
+        sys.exit()
+    except AssertionError:
+        print("The database already exists! Delete '%s' and init the database again." % loc)
+        sys.exit()
+
+    # Now let's run a bunch of queries! Fun...
+    try:
+        conn.execute("CREATE TABLE games (\
+        title TEXT NOT NULL,\
+        system TEXT NOT NULL,\
+        ownership INTEGER NOT NULL DEFAULT 1,\
+        progress INTEGER NOT NULL DEFAULT 1\
+        );")
+        print("Table created.")
+        # TODO: Consider executescript()
+        conn.execute("CREATE VIEW allgames AS SELECT rowid,* FROM games ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW complete AS SELECT rowid,* FROM games WHERE progress = 3 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW backlog AS SELECT rowid,* FROM games WHERE ownership = 1 AND progress < 2 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW done AS SELECT rowid,* FROM games WHERE progress >= 2 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW fresh AS SELECT rowid,* FROM games WHERE progress = 0 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW incomplete AS SELECT rowid,* FROM games WHERE ownership = 1 AND progress = 2 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW owned AS SELECT rowid,* FROM games WHERE ownership = 1 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW unowned AS SELECT rowid,* FROM games WHERE ownership = 0 ORDER BY system,title ASC;")
+        conn.execute("CREATE VIEW wishlist AS SELECT rowid,* FROM games WHERE ownership = 0 AND progress < 2 ORDER BY system,title ASC;")
+        print("Views created.")
+        conn.commit()
+    except sqlite3.OperationalError as e:
+        print("Query error:", e)
+    finally:
+        conn.close()
+
+def export_db(args):
+    '''Exports a YAML representation of the database to a given file.'''
+    try:
+        if args.path == None:
+            fp = sys.stdout
+        else:
+            fp = open(args.path, 'w')
+    except PermissionError:
+        print("The path is not writable by the current user. Please double-check permissions.")
+        sys.exit()
+    else:
+        conn = sqlite3.connect(DB_LOCATION)
+        conn.row_factory = sqlite3.Row
+        c = conn.cursor()
+        fp.write("# vgstash DB file version 0.1\n")
+        db_tree = []
+        # The .format() call supports the optional -i flag
+        for row in c.execute("SELECT {}title,system,ownership,progress FROM games".format("rowid," if args.ids else '')):
+            game = {}
+            for field in row.keys():
+                game.update({field: row[field]})
+            db_tree.append(game)
+        yaml.dump(db_tree, fp, default_flow_style=False, indent=4, allow_unicode=True)
+        fp.close()
+        if fp is not sys.stdout:
+            print("Database exported to {}.".format(args.path))
+
+def import_db(args):
+    '''Read yaml lines from a file (or stdin) to add to the database.'''
+    try:
+        if args.path == None:
+            fp = sys.stdin
+        else:
+            fp = open(args.path, 'r')
+    except PermissionError:
+        print("The path is not readable by the current user. Please check permissions.")
+        sys.exit()
+    # Time for business! :D
+    records = 0
+    data = yaml.safe_load(fp)
+    conn = sqlite3.connect(DB_LOCATION)
+    conn.row_factory = sqlite3.Row
+    c = conn.cursor()
+    # List comprehensions are why I like Python.
+    # inline conditionals are badass, too
+    c.executemany("INSERT {}INTO games ({}title,system,ownership,progress) VALUES ({}:title, :system, :ownership, :progress)".format("OR REPLACE " if args.ids else "", "rowid," if args.ids else "", ":rowid," if args.ids else ""), (game for game in data))
+    conn.commit()
+    conn.close()
+    print("Imported {} games.".format(c.rowcount))
+
+
+def add_game(args):
+    '''Adds a game to the database. Requires at least a title and
+    system.
+
+    Ownership can be 0 (not owned) or 1 (owned). The default is 1.
+
+    Completion can be 0 to 3:
+        0 (fresh, never played)
+        1 (in-progress) (default)
+        2 (beaten)
+        3 (completed 100%)
+    '''
+    if args.ownership == '-':
+        args.ownership = OWNERSHIP
+    if args.progress == '-':
+        args.progress = PROGRESS
+    # Translate our args so they can be added and reflected correctly
+    args.ownership = translate_arg(args.ownership)
+    args.progress = translate_arg(args.progress)
+
+    conn = sqlite3.connect(DB_LOCATION)
+    game = (args.title, args.system, args.ownership, args.progress)
+    conn.execute("INSERT INTO games VALUES(:title, :system, :ownership, :progress)", game)
+    conn.commit()
+    conn.close()
+    qual = "don't own" if args.ownership == 0 else 'own'
+    comp = ("fresh", "in-progress", "beaten", "completed")
+    # I shouldn't have to coerce that last argument but I don't know a better
+    # solution.
+    print("Added {0} for {1}. You {2} it and it's {3}.".format(args.title, args.system, qual, comp[int(args.progress)]))
+
+def delete_game(args):
+    '''Removes a game from the database.'''
+    target = game_found(args.id)
+    if target != None:
+        try:
+            conn = sqlite3.connect(DB_LOCATION)
+            c = conn.cursor()
+            conn.execute("DELETE FROM games WHERE rowid = :id", {'id': args.id})
+            conn.commit()
+            print("Removed {0} for {1} from your database.".format(target[0], target[1]))
+        except sqlite3.OperationalError:
+            print("Could not remove game from the database. Check the file and ensure you have write access.")
+        finally:
+            conn.close()
+    else:
+        print("That game ID does not exist in the database.")
+
+def translate_arg(arg):
+    '''Translate approximate argument names to their internal values for
+    inserting into the database.'''
+    # Verify we're working with a string.
+    try:
+        if len(arg) != 1:
+            print("Argument must be a single character.")
+            sys.exit()
+        if not arg.isnumeric():
+            # We know it can't be coerced to a number, so it must be a string
+            vals = {'f': 0, 'n': 0, 'i': 1, 'y': 1, 'b': 2, 'c': 3}
+            try:
+                return vals[arg]
+            except KeyError:
+                # Note to self, doubling a brace escapes it. This was tucked away in the Python docs...
+                print("Value '{}' not valid. Try one of {{y, n, f, i, b, c}}.".format(arg))
+                sys.exit()
+        else:
+            return arg
+    except TypeError:
+        # It's a number, go ahead and return it
+        return arg
+
+def update_game(args):
+    '''Changes a specific field for a game. Mostly used for correcting
+    mistakes and updating game status as it changes.'''
+    target = game_found(args.gid)
+    # Let's accept anything remotely matching the field names
+    opts = ['system', 'title', 'ownership', 'progress']
+    for i in opts:
+        if i.startswith(args.field):
+            args.field = i
+    if not (args.field in opts):
+        print("Invalid field name indicated! Please choose from {}".format(', '.join(opts)))
+        sys.exit()
+    # Translate y, n, f, i, b, and c
+    if args.field == 'ownership' or args.field == 'progress':
+        args.value = translate_arg(args.value)
+    # We need this workaround because execute() doesn't like variable column names
+    update_stmt = "UPDATE games SET {} = :val WHERE rowid = :id".format(args.field)
+    conn = sqlite3.connect(DB_LOCATION)
+    c = conn.cursor()
+    c.execute(update_stmt, {'id': args.gid, 'val': args.value})
+    conn.commit()
+    if c.rowcount == 1:
+        own_msg = ('not owned', 'owned')
+        prog_msg = ('fresh', 'in-progress', 'beaten', 'complete')
+        update_msg = {
+                'title': "{ot} on {os} is now named {val}.",
+                'system': "{ot} on {os} is now on {val}.",
+                'ownership': "{ot} on {os} is now marked {val}.",
+                'progress': "{ot} on {os} is now marked {val}."
+                }
+        print(update_msg[args.field].format(ot = target['title'], os = target['system'], val = args.value if args.field == 'title' or args.field == 'system' else own_msg[int(args.value)] if args.field == 'ownership' else prog_msg[int(args.value)]))
+    else:
+        print("Could not update game information. Check the DB's permissions.")
+    conn.close()
+
+def list_games(args):
+    '''Filters games according to preset queries. Internally,
+    they are SQLite VIEWs
+
+    Each filter targets different games:
+
+        all:           everything, sorted by system then title
+        backlog:     * have not been beaten or completed
+        complete:      have been completed
+        done:          are beaten or complete
+        fresh:         haven't been started yet
+        incomplete:  * beaten, but not completed
+        owned:         are marked as 'owned'
+        unowned:       are marked as 'unowned'
+        wishlist:      are both 'unowned' and 'fresh' or 'in-progress'
+
+    * Will only target games that are owned.
+    '''
+    if args.filter == 'all':
+        args.filter = 'allgames'
+    # DBs don't allow table names to be parameterized. This little hack
+    # works around that limitation.
+    conn = sqlite3.connect(DB_LOCATION)
+    conn.row_factory = sqlite3.Row
+    select_stmts = {
+            'allgames':   "SELECT * FROM allgames",
+            'backlog':    "SELECT * FROM backlog",
+            'complete':   "SELECT * FROM complete",
+            'done':       "SELECT * FROM done",
+            'fresh':      "SELECT * FROM fresh",
+            'incomplete': "SELECT * FROM incomplete",
+            'owned':      "SELECT * FROM owned",
+            'unowned':    "SELECT * FROM unowned",
+            'wishlist':   "SELECT * FROM wishlist"
+            }
+    # We're emulating a do-while loop
+    first_pass = True
+    for row in conn.execute(select_stmts[args.filter]):
+        if args.raw:
+            # Use this for raw output, for use with other tools
+            print('|'.join(map(str,row)))
+            continue
+        else:
+            row_format(row, header=first_pass)
+            first_pass = False
+
+
+def game_found(gid):
+    '''Confirms the given ID is in the database and, if found, returns it.
+    Used in conjunction with delete_game() and update_game().'''
+    conn = sqlite3.connect(DB_LOCATION)
+    # Give us access to .keys()
+    conn.row_factory = sqlite3.Row
+    c = conn.cursor()
+    c.execute("SELECT title,system,ownership,progress FROM games WHERE rowid = :id", {'id': gid})
+    row = c.fetchone()
+    conn.close()
+    return row
+
+def row_format(args, header):
+    # There's another way to do this, involving gathering the entire results and *then* formatting them
+    # That is incredibly wasteful of resources imo, so it may need some testing to see if it's better.
+    # Ideally, we'd only make the table as wide as needed; that can't happen unless we know the longest
+    # title's length...
+    # Get our maximum width so we can toy around with things.
+    if TABLE_WIDTH >= 50:
+        maxwidth = TABLE_WIDTH
+    else:
+        try:
+            maxwidth = os.get_terminal_size().columns
+        except OSError:
+            with open('/dev/tty') as tty:
+                curwidth = int(subprocess.check_output(['stty', 'size']).split()[1])
+            maxwidth = curwidth
+    twidth = maxwidth - 35
+    if header == True:
+        print("{:^4s} | {:<{w}s} | {:<8s} | {:^3s} | {:<7s}".format("ID", "Title", "System", "Own", "Status", w=twidth))
+        print("-" * maxwidth)
+
+    gidstr = "{: >4d}".format(args['rowid'])
+    titlestr = "{: <{w}s}".format(args['title'][:twidth], w=twidth)
+    systemstr = "{: ^8s}".format(args['system'][:8])
+    ownstr = "{: ^3s}".format("*" if args['ownership'] == 1 else " ")
+    statltr = ['F', 'I', 'B', 'C']
+    statstr = "{: <7s}".format((" " * args['progress'] * 2) + statltr[args['progress']])
+    """
+      ID | Title           | System   | Own | Status
+    -------------------------------------------------
+    1234 | This is a title | Wii U VC |  *  | F I B C
+    """
+    print(" | ".join((gidstr, titlestr, systemstr, ownstr, statstr)))
+
+def main():
+    # Establish our important variables
+    set_env()
+
+    # Set up the command parsers
+    parser = argparse.ArgumentParser()
+    subparsers = parser.add_subparsers()
+
+    # 'add' command
+    parser_add = subparsers.add_parser('add', help="Add a game to your database")
+    parser_add.add_argument('title', type=str, help="The title of the game you're adding")
+    parser_add.add_argument('system', type=str, help="The system your game is for")
+    parser_add.add_argument('ownership', type=str, nargs='?', default='-', help="0 or 'n' for no, 1 or 'y' for yes. Defaults to {0}. Accepts '-' for default, in case you want to set progress but not ownership".format(OWNERSHIP))
+    parser_add.add_argument('progress', type=str, nargs='?', default='-', help="Indicates completion level. 0 = [f]resh, never played; 1 = [i]n progress; 2 = [b]eaten; 3 = [c]ompleted. Defaults to {0}".format(PROGRESS))
+    parser_add.set_defaults(func=add_game)
+
+    # 'init' command
+    parser_init = subparsers.add_parser('init', help="Initialize the database so it can be used")
+    parser_init.set_defaults(func=init_db)
+
+    # 'delete' command
+    parser_del = subparsers.add_parser('delete', help="Remove a game from your database")
+    parser_del.add_argument('id', type=int, help="The ID of the game to be deleted")
+    parser_del.set_defaults(func=delete_game)
+
+    # 'list' command
+    parser_list = subparsers.add_parser('list', help="List your games with preset views")
+    list_filters = ['all', 'backlog', 'complete', 'done', 'fresh', 'incomplete', 'owned', 'unowned', 'wishlist']
+    parser_list.add_argument('filter', nargs='?', choices=list_filters, default='all', help='Filter games accerding to preset queries. Valid filters: {}'.format(', '.join(list_filters)))
+    parser_list.add_argument('-r', '--raw', action="store_true", help="Output the list in a machine-readable format, separated by pipe characters.")
+    parser_list.set_defaults(func=list_games)
+
+    # 'update' command
+    parser_up = subparsers.add_parser('update', help="Update a specific game")
+    parser_up.add_argument('gid', type=int, help="The game's ID (found in 'vgstash list' output)")
+    parser_up.add_argument('field', help="The field you wish to update")
+    parser_up.add_argument('value', type=str, help="The new value for the field")
+    parser_up.set_defaults(func=update_game)
+
+    # 'export' command
+    parser_ex = subparsers.add_parser('export', help="Export the database's information to a YAML file.")
+    parser_ex.add_argument('path', nargs='?', default=None, help="The full path of the file you want to write to. Defaults to stdout")
+    parser_ex.add_argument('-i', '--ids', action="store_true", help="Export game IDs along with game information. Useful if preparing a batch update.")
+    parser_ex.set_defaults(func=export_db)
+
+    # 'import' command
+    parser_im = subparsers.add_parser('import', help="Import a YAML file's content into the database.")
+    parser_im.add_argument('path', nargs='?', default=None, help="The full path of the file you want to read from. Defaults to stdin")
+    parser_im.add_argument('-i', '--ids', action="store_true", help="Update via game IDs in the database instead of appending")
+    parser_im.set_defaults(func=import_db)
+
+    # Let'er rip!
+    args = parser.parse_args()
+    args.func(args)
+
+# Our usual incantation
+if __name__ == "__main__":
+    main()