Allow user to specify session name

Cargo.lock

@@ -2290,6 +2290,7 @@ name = "zellij"
 version = "0.12.0"
 dependencies = [
  "insta",
+ "names",
  "zellij-client",
  "zellij-server",
  "zellij-utils",
@@ -2299,7 +2300,6 @@ dependencies = [
 name = "zellij-client"
 version = "0.12.0"
 dependencies = [
- "names",
  "termbg",
  "zellij-utils",
 ]

Cargo.toml

@@ -13,6 +13,7 @@ resolver = "2"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+names = "0.11.0"
 zellij-client = { path = "zellij-client/", version = "0.12.0" }
 zellij-server = { path = "zellij-server/", version = "0.12.0" }
 zellij-utils = { path = "zellij-utils/", version = "0.12.0" }

src/list_sessions.rs

@@ -67,3 +67,20 @@ pub(crate) fn assert_session(name: &str) {
     };
     process::exit(exit_code);
 }
+
+pub(crate) fn assert_session_ne(name: &str) {
+    let exit_code = match get_sessions() {
+        Ok(sessions) => {
+            if sessions.iter().all(|s| s != name) {
+                return;
+            }
+            println!("Session with name {:?} aleady exists. Use attach command to connect to it or specify a different name.", name);
+            0
+        }
+        Err(e) => {
+            eprintln!("Error occured: {:?}", e);
+            1
+        }
+    };
+    process::exit(exit_code);
+}

src/main.rs

@@ -2,10 +2,10 @@ mod list_sessions;
 #[cfg(test)]
 mod tests;
 
-use list_sessions::{assert_session, list_sessions};
+use list_sessions::{assert_session, assert_session_ne, list_sessions};
 use std::convert::TryFrom;
 use std::process;
-use zellij_client::{os_input_output::get_client_os_input, start_client};
+use zellij_client::{os_input_output::get_client_os_input, start_client, ClientInfo};
 use zellij_server::{os_input_output::get_server_os_input, start_server};
 use zellij_utils::{
     cli::{CliArgs, Command, Sessions},
@@ -61,10 +61,20 @@ pub fn main() {
                 Box::new(os_input),
                 opts,
                 config,
-                Some((session_name, force)),
+                ClientInfo::Attach(session_name, force),
             );
         } else {
-            start_client(Box::new(os_input), opts, config, None);
+            let session_name = opts
+                .session
+                .clone()
+                .unwrap_or_else(|| names::Generator::default().next().unwrap());
+            assert_session_ne(&session_name);
+            start_client(
+                Box::new(os_input),
+                opts,
+                config,
+                ClientInfo::New(session_name),
+            );
         }
     }
 }

src/tests/mod.rs

@@ -5,7 +5,7 @@ pub mod tty_inputs;
 pub mod utils;
 
 use std::path::PathBuf;
-use zellij_client::{os_input_output::ClientOsApi, start_client};
+use zellij_client::{os_input_output::ClientOsApi, start_client, ClientInfo};
 use zellij_server::{os_input_output::ServerOsApi, start_server};
 use zellij_utils::{cli::CliArgs, input::config::Config};
 
@@ -21,6 +21,6 @@ pub fn start(
             start_server(server_os_input, PathBuf::from(""));
         })
         .unwrap();
-    start_client(client_os_input, opts, config, None);
+    start_client(client_os_input, opts, config, ClientInfo::New("".into()));
     let _ = server_thread.join();
 }

zellij-client/Cargo.toml

@@ -9,7 +9,6 @@ license = "MIT"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-names = "0.11.0"
 termbg = "0.2.3"
 zellij-utils = { path = "../zellij-utils/", version = "0.12.0" }
 

zellij-client/src/lib.rs

@@ -76,11 +76,17 @@ fn spawn_server(socket_path: &Path) -> io::Result<()> {
     }
 }
 
+#[derive(Debug, Clone)]
+pub enum ClientInfo {
+    Attach(String, bool),
+    New(String),
+}
+
 pub fn start_client(
     mut os_input: Box<dyn ClientOsApi>,
     opts: CliArgs,
     config: Config,
-    attach_to: Option<(String, bool)>,
+    info: ClientInfo,
 ) {
     let clear_client_terminal_attributes = "\u{1b}[?1l\u{1b}=\u{1b}[r\u{1b}12l\u{1b}[?1000l\u{1b}[?1002l\u{1b}[?1003l\u{1b}[?1005l\u{1b}[?1006l\u{1b}[?12l";
     let take_snapshot = "\u{1b}[?1049h";
@@ -106,20 +112,25 @@ pub fn start_client(
     };
 
     #[cfg(not(any(feature = "test", test)))]
-    let first_msg = if let Some((name, force)) = attach_to {
-        SESSION_NAME.set(name).unwrap();
-        std::env::set_var(&"ZELLIJ_SESSION_NAME", SESSION_NAME.get().unwrap());
+    let first_msg = match info {
+        ClientInfo::Attach(name, force) => {
+            SESSION_NAME.set(name).unwrap();
+            std::env::set_var(&"ZELLIJ_SESSION_NAME", SESSION_NAME.get().unwrap());
 
-        ClientToServerMsg::AttachClient(client_attributes, force)
-    } else {
-        SESSION_NAME
-            .set(names::Generator::default().next().unwrap())
-            .unwrap();
-        std::env::set_var(&"ZELLIJ_SESSION_NAME", SESSION_NAME.get().unwrap());
+            ClientToServerMsg::AttachClient(client_attributes, force)
+        }
+        ClientInfo::New(name) => {
+            SESSION_NAME.set(name).unwrap();
+            std::env::set_var(&"ZELLIJ_SESSION_NAME", SESSION_NAME.get().unwrap());
 
-        spawn_server(&*ZELLIJ_IPC_PIPE).unwrap();
+            spawn_server(&*ZELLIJ_IPC_PIPE).unwrap();
 
-        ClientToServerMsg::NewClient(client_attributes, Box::new(opts), Box::new(config_options))
+            ClientToServerMsg::NewClient(
+                client_attributes,
+                Box::new(opts),
+                Box::new(config_options),
+            )
+        }
     };
     #[cfg(any(feature = "test", test))]
     let first_msg = {

zellij-utils/src/cli.rs

@@ -20,6 +20,10 @@ pub struct CliArgs {
     #[structopt(long, parse(from_os_str), hidden = true)]
     pub server: Option<PathBuf>,
 
+    /// Specify name of a new session
+    #[structopt(long, short)]
+    pub session: Option<String>,
+
     /// Name of a layout file in the layout directory
     #[structopt(short, long, parse(from_os_str))]
     pub layout: Option<PathBuf>,