From d700e905f68be301176d0d0e3ee00bf3bfc3f214 Mon Sep 17 00:00:00 2001
From: Voker57 <voker57@gmail.com>
Date: Fri, 14 Jun 2024 14:01:36 +0300
Subject: [PATCH] feat: implement ser::to_vec() for convenient serializing into
 a new Vec<u8>

such shortcut is usually included in serde format libraries

gated by 'std' feature

Signed-off-by: Voker57 <voker57@gmail.com>
---
 ciborium/src/lib.rs     |  4 ++++
 ciborium/src/ser/mod.rs | 12 ++++++++++++
 ciborium/tests/codec.rs |  2 +-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/ciborium/src/lib.rs b/ciborium/src/lib.rs
index f143943..cbbddf1 100644
--- a/ciborium/src/lib.rs
+++ b/ciborium/src/lib.rs
@@ -106,6 +106,10 @@ pub use crate::de::from_reader_with_buffer;
 #[doc(inline)]
 pub use crate::ser::into_writer;
 
+#[cfg(feature = "std")]
+#[doc(inline)]
+pub use crate::ser::into_vec;
+
 #[doc(inline)]
 pub use crate::value::Value;
 
diff --git a/ciborium/src/ser/mod.rs b/ciborium/src/ser/mod.rs
index 03dd1da..a5ad23d 100644
--- a/ciborium/src/ser/mod.rs
+++ b/ciborium/src/ser/mod.rs
@@ -497,3 +497,15 @@ where
     let mut encoder = Serializer::from(writer);
     value.serialize(&mut encoder)
 }
+
+#[cfg(feature = "std")]
+/// Serializes as CBOR into a new Vec<u8>
+#[inline]
+pub fn into_vec<T: ?Sized + ser::Serialize>(
+    value: &T,
+) -> Result<Vec<u8>, Error<<Vec<u8> as ciborium_io::Write>::Error>> {
+    let mut vector = vec![];
+    let mut encoder = Serializer::from(&mut vector);
+    value.serialize(&mut encoder)?;
+    Ok(vector)
+}
diff --git a/ciborium/tests/codec.rs b/ciborium/tests/codec.rs
index 560762b..bb66364 100644
--- a/ciborium/tests/codec.rs
+++ b/ciborium/tests/codec.rs
@@ -296,7 +296,7 @@ fn codec<'de, T: Serialize + Clone, V: Debug + PartialEq + DeserializeOwned, F:
         assert_eq!(bytes, encoded);
 
         let mut encoded = Vec::new();
-        into_writer(&value, &mut encoded).unwrap();
+        into_writer(&input, &mut encoded).unwrap();
         eprintln!("{:x?} == {:x?}", bytes, encoded);
         assert_eq!(bytes, encoded);