./main.py:
is run when tryptobot is restarted. This script recompiles the backend into a shared object file (./libtryptobot.so), dynamically loads it, connects to the Discord API, handles commands that can't be feasibly implemented in C (i.e., uploading or downloading files), serves a small static webpage, and passes any other commands (the overwhelming majority of commands) to the function handle_message() in ./tryptobot.c.
./index.html: a very simple webpage which tryptobot serves while it's running, accessible at tryptobot.dantefalzone.repl.co.
./tryptobot.c:
the main component of tryptobot's backend. This file implements the majority of tryptobot's commands, as well as the function load_file_to_str() which loads a file's contents into a dynamically allocated string and has proven very useful. TODO: move load_file_to_str()'s implementation into its own *.c file.
./tryptobot.h: header file which declares the functions handle_message() and load_file_to_str().
./copy_file.{c,h}: defines function copy_file() which copies one file to another without calling {m,c,re}alloc().
./jsmn.h: the jsmn library, a header-only library for tokenizing JSON, written by Serge Zaitsev.
./commands.json: a list of the commands supported by tryptobot.
./dice.h: header file defining the diceroll_t datatype, which is a struct that represents a diceroll (for example, "rolling 2d20 with a -1 modifier giving the result 7" would be represented as (diceroll_t){ .dice_ct=2, .faces=20, .modifier=-1, .value=7}). TODO: move the functions for handling/manipulating diceroll_ts into their own file, like dice.c.
./lastroll.txt: file whither the most recent diceroll_t to be obtained from the %roll or %reroll commands is serialized.
./dstrcat.c: this contains the function dstrcat() ('d' being short for "dynamic"), which takes a NULL or heap-allocated char * and a const char *, and appends the const char * to the end of the string pointed to by the char *, realloc()ing it as needed to hold the extra chars and returning a pointer to the realloc()ed string. This is a function that's very broadly useful, and is called many times throughout tryptobot's backend.
./dstrcat.h: headerfile for ./dstrcat.c.
./charsheet_utils.{c,h}: this contains functions for serializing a charsheet_t into a human-readable format, including cmd_dnd() which is called by handle_message() when someone in the Discord server uses the %dnd command.
./dndml/: this directory contains source, header, and object files for working with dndml (DnD Markup Language), most notably for serializing and deserializing character sheets written in dndml (located in ./charsheets/). In addition to the code for serializing and deserializing dndml, it contains some simple tests for that code, so it can be tested separately from the rest of tryptobot's backend.
./dndml/dnd_*.{c,h}: source code for the parser (for deserializing dndml) and for functions for serializing a charsheet_t back into dndml. charsheet_t and the types from which it is composed are defined in dnd_charsheet.h. The parser and its component types are designed with an object-oriented interface (function pointers as struct members) and "constructor" functions for initializing them to a valid state.
./dndml/build.sh: build script for the tests. Run the script without any args for more info.
./dndml/errlog.txt: file where the most recent backend error message is stored (so it can be retrieved via %dnd wtf from the Discord server).
./charsheets/: DnD character sheets written in dndml are stored here. TODO: create a "backups" subdirectory to which character sheets are copied before they are modified via %dnd subcommands.