methods to check if a name or password are valid

src/game/check_player.rs

@@ -0,0 +1,67 @@
+use lazy_static::lazy_static;
+
+use crate::game::Game;
+
+lazy_static! {
+	static ref NAME_CHARS: Vec<char> =
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".chars().collect();
+	static ref PASS_CHARS: Vec<char> =
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890 `~@#$%^&*()_+-=[]{};':\",./<>?"
+		.chars().collect();
+}
+
+pub enum PlayerCheck {
+	Ok(String),
+	Err(Vec<String>),
+}
+
+impl Game {
+	pub fn check_player_name<S: Into<String>>(name: S) -> PlayerCheck {
+		let name = name.into();
+		let name = name.trim();
+		let mut err_vec = Vec::<String>::new();
+
+		if name.len() < 2 {
+			err_vec.push("2 character minimum".into());
+		} else if name.len() > 20 {
+			err_vec.push("20 character maximum.".into());
+		}
+
+		for c in name.chars() {
+			if !NAME_CHARS.contains(&c) {
+				err_vec.push("English alphabetic characters only.".into());
+				break;
+			}
+		}
+
+		if !err_vec.is_empty() {
+			PlayerCheck::Err(err_vec)
+		} else {
+			PlayerCheck::Ok(name.into())
+		}
+	}
+
+	pub fn check_player_password<S: Into<String>>(password: S) -> PlayerCheck {
+		let password = password.into();
+		let mut err_vec = Vec::<String>::new();
+
+		if password.len() < 8 {
+			err_vec.push("8 character minimum.".into());
+		} else if password.len() > 128 {
+			err_vec.push("128 character maximum.".into());
+		}
+
+		for c in password.chars() {
+			if !PASS_CHARS.contains(&c) {
+				err_vec.push("English alphanumeric characters or symbols only.".into());
+				break;
+			}
+		}
+
+		if err_vec.is_empty() {
+			PlayerCheck::Ok(password.into())
+		} else {
+			PlayerCheck::Err(err_vec)
+		}
+	}
+}

src/game/mod.rs

@@ -1,3 +1,4 @@
+mod check_player;
 #[allow(clippy::module_inception)]
 mod game;
 mod handle_events;
@@ -6,4 +7,5 @@ mod new;
 mod process_recv_message;
 mod state;
 
+pub use check_player::*;
 pub use game::Game;