From 71e0a1b7de1c4063a5f35cc47d56b9991f7b03da Mon Sep 17 00:00:00 2001
From: Congyu <52687642+Congyuwang@users.noreply.github.com>
Date: Fri, 29 Mar 2024 19:21:12 +0800
Subject: [PATCH] fix RocksDictConfig save not truncating (#117)

---
 src/rdict.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/rdict.rs b/src/rdict.rs
index 8cfb7bb..6f0f30e 100644
--- a/src/rdict.rs
+++ b/src/rdict.rs
@@ -120,7 +120,11 @@ impl RocksDictConfig {
     }
 
     pub fn save<P: AsRef<Path>>(&self, path: P) -> PyResult<()> {
-        let config_file = fs::File::options().create(true).write(true).open(path)?;
+        let config_file = fs::File::options()
+            .create(true)
+            .truncate(true)
+            .write(true)
+            .open(path)?;
         match serde_json::to_writer(config_file, self) {
             Ok(_) => Ok(()),
             Err(e) => Err(PyException::new_err(e.to_string())),