Received-SPF: pass (google.com: domain of linux-kernel+bounces-34003-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: Danilo Krummrich <dakr@redhat.com>
To: ojeda@kernel.org,
	alex.gaynor@gmail.com,
	wedsonaf@gmail.com,
	boqun.feng@gmail.com,
	gary@garyguo.net,
	bjorn3_gh@protonmail.com,
	benno.lossin@proton.me,
	a.hindborg@samsung.com,
	aliceryhl@google.com
Cc: rust-for-linux@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Danilo Krummrich <dakr@redhat.com>
Subject: [PATCH] rust: str: add to_ascii_{upper,lower}case() to CString
Date: Mon, 22 Jan 2024 19:45:57 +0100
Message-ID: <20240122184608.11863-1-dakr@redhat.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Add functions to convert a CString to upper- / lowercase assuming all
characters are ASCII encoded.

Signed-off-by: Danilo Krummrich <dakr@redhat.com>
---
 rust/kernel/str.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 7d848b83add4..d21151d89861 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -581,6 +581,16 @@ pub fn try_from_fmt(args: fmt::Arguments<'_>) -> Result<Self, Error> {
         // exist in the buffer.
         Ok(Self { buf })
     }
+
+    /// Converts the whole CString to lowercase.
+    pub fn to_ascii_lowercase(&mut self) {
+        self.buf.make_ascii_lowercase();
+    }
+
+    /// Converts the whole CString to uppercase.
+    pub fn to_ascii_uppercase(&mut self) {
+        self.buf.make_ascii_uppercase();
+    }
 }
 
 impl Deref for CString {

base-commit: 610347effc2ecb5ededf5037e82240b151f883ab
-- 
2.43.0