From 8f410d1ead74b979481f1488a4dcddd33ea829c7 Mon Sep 17 00:00:00 2001
From: Ben Bridle <bridle.benjamin@gmail.com>
Date: Thu, 25 Aug 2022 21:27:39 +1200
Subject: Initial commit

---
 src/operations/ls.rs | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/operations/ls.rs

(limited to 'src/operations/ls.rs')

diff --git a/src/operations/ls.rs b/src/operations/ls.rs
new file mode 100644
index 0000000..2d2da5d
--- /dev/null
+++ b/src/operations/ls.rs
@@ -0,0 +1,51 @@
+use crate::{Entry, EntryReadError, EntryType};
+use std::path::Path;
+
+pub fn get_entry<P>(path: P) -> Result<Entry, EntryReadError>
+where
+    P: AsRef<Path>,
+{
+    Entry::from_path(path)
+}
+
+pub fn get_optional_entry<P>(path: P) -> Result<Option<Entry>, EntryReadError>
+where
+    P: AsRef<Path>,
+{
+    match get_entry(path) {
+        Ok(e) => Ok(Some(e)),
+        Err(EntryReadError::NotFound) => Ok(None),
+        Err(other) => Err(other),
+    }
+}
+
+pub fn list_directory<P>(path: P) -> Result<Vec<Entry>, EntryReadError>
+where
+    P: AsRef<Path>,
+{
+    let mut entries = Vec::new();
+    for dir_entry in std::fs::read_dir(path)? {
+        let entry = match Entry::from_path(&dir_entry?.path()) {
+            Ok(v) => v,
+            Err(_) => continue,
+        };
+        entries.push(entry);
+    }
+    return Ok(entries);
+}
+
+/// Recursively descend into a directory and all sub-directories,
+/// returning an [`Entry`](struct.Entry.html) for each discovered file.
+pub fn traverse_directory<P>(path: P) -> Result<Vec<Entry>, EntryReadError>
+where
+    P: AsRef<Path>,
+{
+    let mut file_entries = Vec::new();
+    for entry in list_directory(path)? {
+        match entry.entry_type {
+            EntryType::File => file_entries.push(entry),
+            EntryType::Directory => file_entries.extend(traverse_directory(&entry.path)?),
+        }
+    }
+    return Ok(file_entries);
+}
-- 
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