feat(tui): add --print-locales to print all available locales

crates/trippy-tui/src/config.rs

@@ -256,6 +256,8 @@ pub enum TrippyAction {
     PrintShellCompletions(Shell),
     /// Generate a man page and exit.
     PrintManPage,
+    /// Print all available locales and exit.
+    PrintLocales,
 }
 
 impl TrippyAction {
@@ -270,6 +272,8 @@ impl TrippyAction {
             Self::PrintShellCompletions(shell)
         } else if args.generate_man {
             Self::PrintManPage
+        } else if args.print_locales {
+            Self::PrintLocales
         } else {
             Self::Trippy(TrippyConfig::from(args, privilege, pid)?)
         })

crates/trippy-tui/src/config/cmd.rs

@@ -19,7 +19,7 @@ use std::time::Duration;
 #[command(name = "trip", author, version, about, long_about = None, arg_required_else_help(true), styles=Styles::styled())]
 pub struct Args {
     /// A space delimited list of hostnames and IPs to trace
-    #[arg(required_unless_present_any(["print_tui_theme_items", "print_tui_binding_commands", "print_config_template", "generate", "generate_man"]))]
+    #[arg(required_unless_present_any(["print_tui_theme_items", "print_tui_binding_commands", "print_config_template", "generate", "generate_man", "print_locales"]))]
     pub targets: Vec<String>,
 
     /// Config file
@@ -260,6 +260,10 @@ pub struct Args {
     #[arg(long)]
     pub print_config_template: bool,
 
+    /// Print all locales and exit
+    #[arg(long)]
+    pub print_locales: bool,
+
     /// The debug log format [default: pretty]
     #[arg(long)]
     pub log_format: Option<LogFormat>,

crates/trippy-tui/src/lib.rs

@@ -35,6 +35,7 @@ pub fn trippy() -> anyhow::Result<()> {
         TrippyAction::PrintConfigTemplate => print::print_config_template(),
         TrippyAction::PrintManPage => print::print_man_page()?,
         TrippyAction::PrintShellCompletions(shell) => print::print_shell_completions(shell)?,
+        TrippyAction::PrintLocales => print::print_locales(),
     }
     Ok(())
 }

crates/trippy-tui/src/locale.rs

@@ -21,6 +21,11 @@ pub fn locale() -> String {
     rust_i18n::locale().to_string()
 }
 
+/// Get all available locales.
+pub fn available_locales() -> Vec<&'static str> {
+    rust_i18n::available_locales!()
+}
+
 fn set_locale_inner(locale: &str) {
     let all_locales = rust_i18n::available_locales!();
     if all_locales.contains(&locale) {

crates/trippy-tui/src/print.rs

@@ -1,6 +1,8 @@
 use crate::config::{Args, TuiCommandItem, TuiThemeItem};
+use crate::locale::available_locales;
 use clap::CommandFactory;
 use clap_complete::Shell;
+use itertools::Itertools;
 use std::process;
 use strum::VariantNames;
 
@@ -29,6 +31,11 @@ pub fn print_man_page() -> anyhow::Result<()> {
     process::exit(0);
 }
 
+pub fn print_locales() {
+    println!("TUI locales: {}", available_locales().iter().join(", "));
+    process::exit(0);
+}
+
 fn tui_theme_items() -> String {
     format!(
         "TUI theme color items: {}",