Add `rad-path` command

Signed-off-by: Alexis Sellier <alexis@radicle.xyz>

radicle-cli/src/commands.rs

@@ -20,6 +20,8 @@ pub mod rad_ls;
 pub mod rad_merge;
 #[path = "commands/patch.rs"]
 pub mod rad_patch;
+#[path = "commands/path.rs"]
+pub mod rad_path;
 #[path = "commands/push.rs"]
 pub mod rad_push;
 #[path = "commands/review.rs"]

radicle-cli/src/commands/path.rs

@@ -0,0 +1,56 @@
+#![allow(clippy::or_fun_call)]
+use std::ffi::OsString;
+
+use anyhow::anyhow;
+use radicle::profile;
+
+use crate::terminal as term;
+use crate::terminal::args::{Args, Error, Help};
+
+pub const HELP: Help = Help {
+    name: "path",
+    description: "Display the radicle home path",
+    version: env!("CARGO_PKG_VERSION"),
+    usage: r#"
+Usage
+
+    rad path [--help]
+
+    If no argument is specified, the radicle "home" path is displayed.
+
+Options
+
+    --help    Print help
+
+"#,
+};
+
+pub struct Options {}
+
+impl Args for Options {
+    fn from_args(args: Vec<OsString>) -> anyhow::Result<(Self, Vec<OsString>)> {
+        use lexopt::prelude::*;
+
+        let mut parser = lexopt::Parser::from_args(args);
+
+        #[allow(clippy::never_loop)]
+        while let Some(arg) = parser.next()? {
+            match arg {
+                Long("help") => {
+                    return Err(Error::Help.into());
+                }
+                _ => return Err(anyhow!(arg.unexpected())),
+            }
+        }
+
+        Ok((Options {}, vec![]))
+    }
+}
+
+pub fn run(_options: Options, _ctx: impl term::Context) -> anyhow::Result<()> {
+    let home = profile::home()?;
+
+    println!("{}", home.display());
+
+    Ok(())
+}

radicle-cli/src/main.rs

@@ -198,6 +198,14 @@ fn run_other(exe: &str, args: &[OsString]) -> Result<(), Option<anyhow::Error>>
                 args.to_vec(),
             );
         }
+        "path" => {
+            term::run_command_args::<rad_path::Options, _>(
+                rad_path::HELP,
+                "Command",
+                rad_path::run,
+                args.to_vec(),
+            );
+        }
         _ => {
             let exe = format!("{}-{}", NAME, exe);
             let status = process::Command::new(exe.clone()).args(args).status();