initial implementation of root command and made some commands allow being thrown through pipes

src/command/session.rs

@@ -1,4 +1,5 @@
 //!	commands accessible from within a session
+use std::fs::read_to_string;
 
 use pico_args::Arguments;
 use tmux_interface::{
@@ -8,7 +9,10 @@ use tmux_interface::{
 
 use crate::{ error, flag, util };
 
+const TMP_ROOT: &str = "/tmp/remux_root";
+
 pub fn switch(pargs: &mut Arguments) {
+	util::terminal_enforce();
 	//	refuse to run outside a session
 	util::session_enforce("switch");
 
@@ -32,3 +36,17 @@ pub fn switch(pargs: &mut Arguments) {
 		.output().ok();
 }
 
+pub fn root() {
+	util::session_enforce("root");
+
+	let exec = commands::Run::new().shell_command("printf '#{session_path}' > ".to_string() + TMP_ROOT);
+	Tmux::new()
+		.add_command(exec)
+		.output().ok();
+
+	if let Ok(text) = read_to_string(TMP_ROOT) {
+		println!("{text}");
+		std::fs::remove_file(TMP_ROOT).ok();
+	}
+}
+

src/command/share.rs

@@ -15,6 +15,8 @@ use tmux_interface::{
 use crate::{ error, flag, util };
 
 pub fn attach(pargs: &mut Arguments) {
+	//	must be run from terminal
+	util::terminal_enforce();
 	//	don't allow unflagged nests
 	util::prevent_nest();
 
@@ -59,6 +61,7 @@ pub fn attach(pargs: &mut Arguments) {
 }
 
 pub fn detach(pargs: &mut Arguments) {
+	util::terminal_enforce();
 	//	get target or fallback
 	let args = pargs.clone().finish();
 	let target: String;
@@ -142,6 +145,7 @@ pub fn list() {
 }
 
 pub fn new(pargs: &mut Arguments) {
+	util::terminal_enforce();
 	//	don't allow unflagged nesting
 	util::prevent_nest();
 

src/help.rs

@@ -91,6 +91,14 @@ flags:
    -n, --nest             Create the session inside another session.
    -t, --target <dir>     Sets the target directory for the new session."),
 
+		Some("root")
+		=>
+println!("remux root
+Print the session path (#{{session_path}}) to standard output.
+Must be run from inside a session.
+
+usage: remux root"),
+
 		Some("s" | "switch")
 		=>
 println!("remux switch

src/main.rs

@@ -1,7 +1,4 @@
-use std::{
-	env::{ set_var, var },
-	io::{ stdout, IsTerminal }
-};
+use std::env::{ set_var, var };
 
 use pico_args::Arguments;
 
@@ -39,8 +36,6 @@ fn main() {
 		set_var("TMUX", "");
 	}
 
-	if !stdout().is_terminal() { error::not_terminal(); }
-
 	let subcommand = args.subcommand().unwrap();
 
 	//	invoke subcommand function
@@ -64,6 +59,9 @@ fn main() {
 		Some("n" | "new")
 			=>	command::share::new(&mut args),
 
+		Some("root")
+			=>	command::session::root(),
+
 		Some("s" | "switch")
 			=>	command::session::switch(&mut args),
 

src/util.rs

@@ -1,5 +1,6 @@
 use std::{
 	env::{ current_dir, var },
+	io::{ stdout, IsTerminal },
 	path::PathBuf,
 	process::exit
 };
@@ -49,6 +50,11 @@ pub fn session_exists<S: Into<String>>(target: S) -> bool {
 		.success()
 }
 
+///	enforce a command is being run in a terminal
+pub fn terminal_enforce() {
+	if !stdout().is_terminal() { error::not_terminal(); }
+}
+
 ///	attempt to return the repo name or exit
 pub fn repo_fallback() -> String {
 	let repo = repo_root(current_dir().unwrap());