add show command

src/cli.rs

@@ -17,6 +17,12 @@ pub enum Cmd {
         paths: Vec<UserPath>,
     },
 
+    /// Show command to be executed by "open" command
+    Show {
+        #[clap(required = true)]
+        paths: Vec<UserPath>,
+    },
+
     /// Set the default handler for mime/extension
     Set {
         mime: MimeOrExtension,

src/main.rs

@@ -1,3 +1,5 @@
+use std::io::Write;
+
 use config::CONFIG;
 use error::{Error, Result};
 use once_cell::sync::Lazy;
@@ -51,6 +53,28 @@ fn main() -> Result<()> {
                     handler.open(paths)?;
                 }
             }
+            Cmd::Show { paths } => {
+                let mut handlers: HashMap<Handler, Vec<String>> =
+                    HashMap::new();
+
+                for path in paths.into_iter() {
+                    handlers
+                        .entry(apps.get_handler(&path.get_mime()?.0)?)
+                        .or_default()
+                        .push(path.to_string());
+                }
+
+                for (handler, paths) in handlers.into_iter() {
+                    let stdout = std::io::stdout();
+                    let (cmd, cmd_args) = handler.get_entry()?.get_cmd(paths)?;
+                    write!(&stdout, "{}", cmd)?;
+                    for arg in cmd_args.into_iter() {
+                        write!(&stdout, " {}", arg)?;
+                    }
+                    write!(&stdout, "\n")?
+
+                }
+            }
             Cmd::List { all } => {
                 apps.print(all)?;
             }