From b9411382c29bcf68269f42aa669274a1e514d28e Mon Sep 17 00:00:00 2001
From: Jordan Doyle <jordan@9t9t9.com>
Date: Thu, 5 Apr 2018 10:04:59 +0100
Subject: [PATCH] make cache writing more clear in discovery

---
 src/main.rs | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 2ab5a7f..d6b7a62 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -239,13 +239,16 @@ pub fn discover(pretty: bool, invalidate: bool) -> Vec<sonos::Speaker> {
 
     let speakers = sonos::discover().unwrap();
 
-    let writer = std::fs::File::create(CACHE_FILE_NAME).unwrap();
-    let mut serializer = serde_json::Serializer::new(writer);
-
-    speakers.iter()
-        .map(|s| s.ip)
-        .collect::<Vec<IpAddr>>()
-        .serialize(&mut serializer).unwrap();
+    {
+        // write IP addresses of all known speakers to cache
+        let writer = std::fs::File::create(CACHE_FILE_NAME).unwrap();
+        let mut serializer = serde_json::Serializer::new(writer);
+
+        speakers.iter()
+            .map(|s| s.ip)
+            .collect::<Vec<IpAddr>>()
+            .serialize(&mut serializer).unwrap();
+    }
 
     speakers
 }
--
libgit2 1.7.2