Move args into std::sys

1 files changed, 53 insertions, 0 deletions

diff --git a/library/std/src/sys/args/xous.rs b/library/std/src/sys/args/xous.rs
new file mode 100644
index 00000000000..2dd37d53422
--- /dev/null
+++ b/library/std/src/sys/args/xous.rs
@@ -0,0 +1,53 @@
+use crate::ffi::OsString;
+use crate::sys::pal::os::get_application_parameters;
+use crate::sys::pal::os::params::ArgumentList;
+use crate::{fmt, vec};
+
+pub struct Args {
+    parsed_args_list: vec::IntoIter<OsString>,
+}
+
+pub fn args() -> Args {
+    let Some(params) = get_application_parameters() else {
+        return Args { parsed_args_list: vec![].into_iter() };
+    };
+
+    for param in params {
+        if let Ok(args) = ArgumentList::try_from(&param) {
+            let mut parsed_args = vec![];
+            for arg in args {
+                parsed_args.push(arg.into());
+            }
+            return Args { parsed_args_list: parsed_args.into_iter() };
+        }
+    }
+    Args { parsed_args_list: vec![].into_iter() }
+}
+
+impl fmt::Debug for Args {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.parsed_args_list.as_slice().fmt(f)
+    }
+}
+
+impl Iterator for Args {
+    type Item = OsString;
+    fn next(&mut self) -> Option<OsString> {
+        self.parsed_args_list.next()
+    }
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.parsed_args_list.size_hint()
+    }
+}
+
+impl DoubleEndedIterator for Args {
+    fn next_back(&mut self) -> Option<OsString> {
+        self.parsed_args_list.next_back()
+    }
+}
+
+impl ExactSizeIterator for Args {
+    fn len(&self) -> usize {
+        self.parsed_args_list.len()
+    }
+}