From b54ac2e5e929deabaa1a992e98e826235dd33401 Mon Sep 17 00:00:00 2001
From: Nora <nora.widdecke@tu-bs.de>
Date: Sun, 24 Feb 2019 23:14:36 +0100
Subject: cursor: show possible values in --help

---
 Cargo.lock            |  1 +
 Cargo.toml            |  1 +
 src/actions/cursor.rs |  8 ++++----
 src/cli.rs            | 34 ++++++++++++++++++----------------
 src/lib.rs            |  1 +
 5 files changed, 25 insertions(+), 20 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index dea9f78..a40aa63 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -381,6 +381,7 @@ dependencies = [
  "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "backtrace 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "dirs 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs2 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "indoc 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 1548fad..1278063 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,6 +25,7 @@ lazy_static = "1.2.0"
 backtrace = "0.3"
 dirs = "1.0.4"
 structopt = "0.2.14"
+clap = "2.32.0"
 
 [dev-dependencies]
 assert_fs = "0.11.3"
diff --git a/src/actions/cursor.rs b/src/actions/cursor.rs
index b009ab4..4ef951b 100644
--- a/src/actions/cursor.rs
+++ b/src/actions/cursor.rs
@@ -16,8 +16,8 @@ pub fn do_cursor(args: &Cursor) -> KhResult<()> {
     //println!("stdin is tty")
     if let Some(direction) = &args.direction {
       match direction {
-        CursorDirection::Prev => return cursor_sequence_move(&Direction::Up),
-        CursorDirection::Next => return cursor_sequence_move(&Direction::Down),
+        CursorDirection::prev => return cursor_sequence_move(&Direction::Up),
+        CursorDirection::next => return cursor_sequence_move(&Direction::Down),
         &_ => {}
       }
     };
@@ -95,7 +95,7 @@ mod integration {
   #[test]
   fn test_cursor_sequence_move_next() {
     let testdir = testutils::prepare_testdir("testdir_with_seq_and_cursor");
-    let args = Cursor{direction: Some(CursorDirection::Next)};
+    let args = Cursor{direction: Some(CursorDirection::next)};
     do_cursor(&args).unwrap();
 
     let out = "1182988800 rfc_multi_day_allday.ics";
@@ -106,7 +106,7 @@ mod integration {
   #[test]
   fn test_cursor_sequence_move_prev_at_end() {
     let testdir = testutils::prepare_testdir("testdir_with_seq_and_cursor");
-    let args = Cursor{direction: Some(CursorDirection::Prev)};
+    let args = Cursor{direction: Some(CursorDirection::prev)};
     do_cursor(&args).unwrap();
 
     let out = "1544740200 twodaysacrossbuckets.ics\n";
diff --git a/src/cli.rs b/src/cli.rs
index cc16d1c..948df5f 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -46,28 +46,30 @@ pub struct Agenda {
 
 #[derive(Debug, StructOpt)]
 pub struct Cursor {
-  /// Move the cursor on the selection. Uses "next" and "prev".
-  #[structopt(name = "direction")]
+  /// Move the cursor on the selection. 
+  #[structopt(name = "direction", raw(possible_values = "&Direction::variants()"))]
   pub direction: Option<Direction>,
 }
 
-#[derive(Debug, StructOpt)]
-pub enum Direction {
-  Next,
-  Prev,
-}
-
-impl std::str::FromStr for Direction{
-  type Err = String;
-  fn from_str(s: &str) -> Result<Self, <Self as std::str::FromStr>::Err> {
-    match s {
-      "prev" => Ok(Direction::Prev),
-      "next" => Ok(Direction::Next),
-      &_ => Err("Expected 'prev' or 'next'".to_string())
-    }
+arg_enum! {
+#[derive(Debug)]
+  pub enum Direction {
+    next,
+    prev,
   }
 }
 
+//impl std::str::FromStr for Direction{
+//  type Err = String;
+//  fn from_str(s: &str) -> Result<Self, <Self as std::str::FromStr>::Err> {
+//    match s {
+//      "prev" => Ok(Direction::Prev),
+//      "next" => Ok(Direction::Next),
+//      &_ => Err("Expected 'prev' or 'next'".to_string())
+//    }
+//  }
+//}
+
 #[derive(Debug, StructOpt)]
 pub struct Index {
   /// Rebuild index
diff --git a/src/lib.rs b/src/lib.rs
index 65f78d1..0eeab59 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -29,3 +29,4 @@ use ical;
 #[macro_use] extern crate log;
 #[macro_use] extern crate indoc;
 #[macro_use] extern crate lazy_static;
+#[macro_use] extern crate clap;
-- 
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