From 7760d04c8a239bc5a0befc91e95d3ac963ee14a1 Mon Sep 17 00:00:00 2001
From: Serial <69764315+Serial-ATA@users.noreply.github.com>
Date: Fri, 26 Apr 2024 08:15:49 -0400
Subject: [PATCH] io: Impl `Truncate`/`Length` for refs

---
 CHANGELOG.md         |  4 ++++
 lofty/src/util/io.rs | 22 ++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index bffc24356..e9756bb45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- **Truncate**: `impl<T: Truncate> Truncate for &mut T` ([PR](https://github.com/Serial-ATA/lofty-rs/pull/384))
+- **Length**: `impl<T: Length> Truncate for &T` ([PR](https://github.com/Serial-ATA/lofty-rs/pull/384))
+
 ## [0.19.0] - 2024-04-21
 
 ### Added
diff --git a/lofty/src/util/io.rs b/lofty/src/util/io.rs
index 7b9f1f0e9..a45a98a73 100644
--- a/lofty/src/util/io.rs
+++ b/lofty/src/util/io.rs
@@ -89,6 +89,17 @@ where
 	}
 }
 
+impl<T> Truncate for &mut T
+where
+	T: Truncate,
+{
+	type Error = <T as Truncate>::Error;
+
+	fn truncate(&mut self, new_len: u64) -> Result<(), Self::Error> {
+		(**self).truncate(new_len)
+	}
+}
+
 /// Provides a method to get the length of a storage object
 ///
 /// This is one component of the [`FileLike`] trait, which is used to provide implementors access to any
@@ -154,6 +165,17 @@ where
 	}
 }
 
+impl<T> Length for &T
+where
+	T: Length,
+{
+	type Error = <T as Length>::Error;
+
+	fn len(&self) -> Result<u64, Self::Error> {
+		Length::len(*self)
+	}
+}
+
 /// Provides a set of methods to read and write to a file-like object
 ///
 /// This is a combination of the [`Read`], [`Write`], [`Seek`], [`Truncate`], and [`Length`] traits.