From 3b96be47ec5409dda2c43207c4e86b76bb35ae70 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Tue, 2 Oct 2018 10:39:25 +0300
Subject: Change: use BTReeMap to retain order of fields in output

---
 src/main.rs | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 3813671..ea37040 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,6 @@
 use std::env;
 use std::io;
-use std::collections::HashMap;
+use std::collections::BTreeMap;
 
 extern crate walkdir;
 use walkdir::{WalkDir, DirEntry};
@@ -15,15 +15,15 @@ mod format;
 fn main() -> io::Result<()> {
     for dirname in env::args().skip(1) {
         for e in WalkDir::new(&dirname).into_iter().filter_map(|e| e.ok()) {
-            let hash = mkhash(&e);
-            println!("{}", serde_yaml::to_string(&hash).unwrap());
+            let map = mkmap(&e);
+            println!("{}", serde_yaml::to_string(&map).unwrap());
         }
     }
     Ok(())
 }
 
 
-fn mkhash(e: &DirEntry) -> HashMap<&str, String> {
+fn mkmap(e: &DirEntry) -> BTreeMap<&str, String> {
     let fields = vec![
         ("Name", format::name(e)),
         ("Mtime", format::mtime(e)),
@@ -37,13 +37,13 @@ fn mkhash(e: &DirEntry) -> HashMap<&str, String> {
         ("Gid", format::gid(e)),
         ("Group", format::group(e)),
     ];
-    let mut hash: HashMap<&str, String> =
-        HashMap::from(fields.iter().cloned().collect());
+    let mut map: BTreeMap<&str, String> =
+        BTreeMap::from(fields.iter().cloned().collect());
 
     if let Ok(m) = e.metadata() {
         if m.is_file() {
-            hash.insert("SHA256", format::sha256(e));
+            map.insert("SHA256", format::sha256(e));
         }
     }
-    hash
+    map
 }
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