Add argparse 0.2.2 as a dependency

This patch adds the crate rust-argparse [0] in version 0.2.2 as a
dependency, as discussed in issue #4.

[0]  https://github.com/tailhook/rust-argparse

Import subrepo argparse/:argparse at 0de60a5e6d9ee1a3570d6089afd3ccd6ed7480c5

1 files changed, 33 insertions, 0 deletions

diff --git a/argparse/src/action.rs b/argparse/src/action.rs
new file mode 100644
index 0000000..c3a0aff
--- /dev/null
+++ b/argparse/src/action.rs
@@ -0,0 +1,33 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+
+pub enum ParseResult {
+    Parsed,
+    Help,
+    Exit,
+    Error(String),
+}
+
+
+pub enum Action<'a> {
+    Flag(Box<IFlagAction + 'a>),
+    Single(Box<IArgAction + 'a>),
+    Push(Box<IArgsAction + 'a>),
+    Many(Box<IArgsAction + 'a>),
+}
+
+pub trait TypedAction<T> {
+    fn bind<'x>(&self, Rc<RefCell<&'x mut T>>) -> Action<'x>;
+}
+
+pub trait IFlagAction {
+    fn parse_flag(&self) -> ParseResult;
+}
+
+pub trait IArgAction {
+    fn parse_arg(&self, arg: &str) -> ParseResult;
+}
+
+pub trait IArgsAction {
+    fn parse_args(&self, args: &[&str]) -> ParseResult;
+}