1 files changed, 49 insertions, 0 deletions
diff --git a/src/json.rs b/src/json.rs
new file mode 100644
index 0000000..52f6215
--- /dev/null
+++ b/src/json.rs
@@ -0,0 +1,49 @@
+// Copyright © 2022 Kim Altintop <kim@eagain.io>
+// SPDX-License-Identifier: GPL-2.0-only WITH openvpn-openssl-exception
+
+use std::{
+    fs::File,
+    io::BufReader,
+    path::Path,
+};
+
+use serde::{
+    de::DeserializeOwned,
+    Deserialize,
+    Serialize,
+};
+
+pub mod canonical;
+
+pub fn from_blob<'a, T>(blob: &'a git2::Blob) -> crate::Result<T>
+where
+    T: Deserialize<'a>,
+{
+    Ok(serde_json::from_slice(blob.content())?)
+}
+
+pub fn to_blob<T>(repo: &git2::Repository, data: &T) -> crate::Result<git2::Oid>
+where
+    T: Serialize,
+{
+    let mut writer = repo.blob_writer(None)?;
+    serde_json::to_writer_pretty(&mut writer, data)?;
+    Ok(writer.commit()?)
+}
+
+pub fn from_file<P, T>(path: P) -> crate::Result<T>
+where
+    P: AsRef<Path>,
+    T: DeserializeOwned,
+{
+    let file = File::open(path)?;
+    Ok(serde_json::from_reader(BufReader::new(file))?)
+}
+
+pub fn load<P, T>(path: P) -> crate::Result<T>
+where
+    P: AsRef<Path>,
+    T: DeserializeOwned,
+{
+    from_file(path)
+}