Add id argument helper and getter

libimagentryselect/src/lib.rs

@@ -4,3 +4,5 @@ extern crate interactor;
 
 extern crate libimagstore;
 
+pub mod ui;
+

libimagentryselect/src/ui.rs

@@ -0,0 +1,35 @@
+use clap::{Arg, ArgMatches};
+
+use libimagstore::storeid::StoreId;
+
+pub fn id_argument<'a, 'b>() -> Arg<'a, 'b> {
+    Arg::with_name(id_argument_name())
+        .short(id_argument_short())
+        .long(id_argument_long())
+        .takes_value(true)
+        .multiple(true)
+        .help("Specify the Store-Id")
+}
+
+pub fn id_argument_name() -> &'static str {
+    "id-argument"
+}
+
+pub fn id_argument_short() -> &'static str {
+    "i"
+}
+
+pub fn id_argument_long() -> &'static str {
+    "id"
+}
+
+pub fn get_id(matches: &ArgMatches) -> Option<Vec<StoreId>> {
+    matches.values_of(id_argument_name())
+        .map(|vals| {
+            vals.into_iter()
+                .map(String::from)
+                 .map(StoreId::from)
+                 .collect()
+        })
+}
+