l10n: port hostname to translation + add french

src/uu/hostname/locales/en-US.ftl

@@ -1,2 +1,13 @@
 hostname-about = Display or set the system's host name.
 hostname-usage = hostname [OPTION]... [HOSTNAME]
+hostname-help-domain = Display the name of the DNS domain if possible
+hostname-help-ip-address = Display the network address(es) of the host
+hostname-help-fqdn = Display the FQDN (Fully Qualified Domain Name) (default)
+hostname-help-short = Display the short hostname (the portion before the first dot) if possible
+hostname-error-permission = hostname: you must be root to change the host name
+hostname-error-invalid-name = hostname: invalid hostname '{ $name }'
+hostname-error-resolve-failed = hostname: unable to resolve host name '{ $name }'
+hostname-error-winsock = failed to start Winsock
+hostname-error-set-hostname = failed to set hostname
+hostname-error-get-hostname = failed to get hostname
+hostname-error-resolve-socket = failed to resolve socket addresses

src/uu/hostname/locales/fr-FR.ftl

@@ -0,0 +1,13 @@
+hostname-about = Afficher ou définir le nom d'hôte du système.
+hostname-usage = hostname [OPTION]... [NOM_HÔTE]
+hostname-help-domain = Afficher le nom du domaine DNS si possible
+hostname-help-ip-address = Afficher la ou les adresses réseau de l'hôte
+hostname-help-fqdn = Afficher le FQDN (nom de domaine pleinement qualifié) (par défaut)
+hostname-help-short = Afficher le nom d'hôte court (la partie avant le premier point) si possible
+hostname-error-permission = hostname : vous devez être root pour changer le nom d'hôte
+hostname-error-invalid-name = hostname : nom d'hôte invalide '{ $name }'
+hostname-error-resolve-failed = hostname : impossible de résoudre le nom d'hôte '{ $name }'
+hostname-error-winsock = échec du démarrage de Winsock
+hostname-error-set-hostname = échec de la définition du nom d'hôte
+hostname-error-get-hostname = échec de l'obtention du nom d'hôte
+hostname-error-resolve-socket = échec de la résolution des adresses de socket

src/uu/hostname/src/hostname.rs

@@ -63,11 +63,13 @@
     let matches = uu_app().try_get_matches_from(args)?;
 
     #[cfg(windows)]
-    let _handle = wsa::start().map_err_context(|| "failed to start Winsock".to_owned())?;
+    let _handle = wsa::start().map_err_context(|| get_message("hostname-error-winsock"))?;
 
     match matches.get_one::<OsString>(OPT_HOST) {
         None => display_hostname(&matches),
-        Some(host) => hostname::set(host).map_err_context(|| "failed to set hostname".to_owned()),
+        Some(host) => {
+            hostname::set(host).map_err_context(|| get_message("hostname-error-set-hostname"))
+        }
     }
 }
 
@@ -82,31 +84,31 @@
                 .short('d')
                 .long("domain")
                 .overrides_with_all([OPT_DOMAIN, OPT_IP_ADDRESS, OPT_FQDN, OPT_SHORT])
-                .help("Display the name of the DNS domain if possible")
+                .help(get_message("hostname-help-domain"))
                 .action(ArgAction::SetTrue),
         )
         .arg(
             Arg::new(OPT_IP_ADDRESS)
                 .short('i')
                 .long("ip-address")
                 .overrides_with_all([OPT_DOMAIN, OPT_IP_ADDRESS, OPT_FQDN, OPT_SHORT])
-                .help("Display the network address(es) of the host")
+                .help(get_message("hostname-help-ip-address"))
                 .action(ArgAction::SetTrue),
         )
         .arg(
             Arg::new(OPT_FQDN)
                 .short('f')
                 .long("fqdn")
                 .overrides_with_all([OPT_DOMAIN, OPT_IP_ADDRESS, OPT_FQDN, OPT_SHORT])
-                .help("Display the FQDN (Fully Qualified Domain Name) (default)")
+                .help(get_message("hostname-help-fqdn"))
                 .action(ArgAction::SetTrue),
         )
         .arg(
             Arg::new(OPT_SHORT)
                 .short('s')
                 .long("short")
                 .overrides_with_all([OPT_DOMAIN, OPT_IP_ADDRESS, OPT_FQDN, OPT_SHORT])
-                .help("Display the short hostname (the portion before the first dot) if possible")
+                .help(get_message("hostname-help-short"))
                 .action(ArgAction::SetTrue),
         )
         .arg(