From f0b6b7b1afcf43a1018492c4c7a037a990fe4540 Mon Sep 17 00:00:00 2001
From: Jiahao XU <Jiahao_XU@outlook.com>
Date: Tue, 26 Jul 2022 22:45:59 +1000
Subject: [PATCH] Impl `binstall_v1::append_to_path`

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>
---
 src/metafiles/binstall_v1.rs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/metafiles/binstall_v1.rs b/src/metafiles/binstall_v1.rs
index 3ed2a1bc..0089c5bb 100644
--- a/src/metafiles/binstall_v1.rs
+++ b/src/metafiles/binstall_v1.rs
@@ -84,3 +84,27 @@ pub enum Error {
     #[error(transparent)]
     SerdeJsonParse(#[from] serde_json::Error),
 }
+
+pub fn append_to_path<Iter>(path: impl AsRef<Path>, iter: Iter) -> Result<(), Error>
+where
+    Iter: IntoIterator<Item = Entry>,
+{
+    let file = FileLock::new_exclusive(
+        fs::OpenOptions::new()
+            .create(true)
+            .append(true)
+            .open(path)?,
+    )?;
+
+    let writer = io::BufWriter::with_capacity(512, file);
+
+    let mut ser = serde_json::Serializer::new(writer);
+
+    for item in iter {
+        item.serialize(&mut ser)?;
+    }
+
+    ser.into_inner().flush()?;
+
+    Ok(())
+}