Update to heapless 0.9

Author: sosthene-nitrokey

Cargo.toml

@@ -26,7 +26,7 @@ all-features = true
 bitflags = "2.9.0"
 delog = "0.1.0"
 generic-array = "0.14"
-heapless = "0.7"
+heapless = "0.9"
 littlefs2-core = { version = "0.1", path = "core" }
 littlefs2-sys = { version = "0.3.1", features = ["multiversion"] }
 

core/Cargo.toml

@@ -12,14 +12,18 @@ repository.workspace = true
 bitflags = "2.6.0"
 heapless-bytes03 = { package = "heapless-bytes", version = "0.3", optional = true }
 heapless-bytes04 = { package = "heapless-bytes", version = "0.4", optional = true }
+heapless-bytes05 = { package = "heapless-bytes", version = "0.5", optional = true }
 heapless07 = { package = "heapless", version = "0.7", optional = true }
 heapless08 = { package = "heapless", version = "0.8", optional = true }
+heapless09 = { package = "heapless", version = "0.9", optional = true }
 serde = { version = "1", default-features = false, features = ["derive"], optional = true }
 
 [features]
 heapless-bytes03 = ["dep:heapless-bytes03"]
 heapless-bytes04 = ["dep:heapless-bytes04"]
+heapless-bytes05 = ["dep:heapless-bytes05"]
 heapless07 = ["dep:heapless07"]
 heapless08 = ["dep:heapless08"]
+heapless09 = ["dep:heapless09"]
 serde = ["dep:serde"]
 debug-error = []

core/src/object_safe.rs

@@ -42,6 +42,17 @@ impl<const N: usize> Vec for heapless_bytes04::Bytes<N> {
     }
 }
 
+#[cfg(feature = "heapless-bytes05")]
+impl<const N: usize> Vec for heapless_bytes05::Bytes<N> {
+    fn resize_to_capacity(&mut self) {
+        heapless_bytes05::Bytes::resize_to_capacity(self)
+    }
+
+    fn truncate(&mut self, n: usize) {
+        heapless_bytes05::Bytes::truncate(self, n)
+    }
+}
+
 #[cfg(feature = "heapless07")]
 impl<const N: usize> Vec for heapless07::Vec<u8, N> {
     fn resize_to_capacity(&mut self) {
@@ -64,6 +75,17 @@ impl<const N: usize> Vec for heapless08::Vec<u8, N> {
     }
 }
 
+#[cfg(feature = "heapless09")]
+impl<LenT: heapless09::LenType, const N: usize> Vec for heapless09::Vec<u8, N, LenT> {
+    fn resize_to_capacity(&mut self) {
+        self.resize_default(self.capacity()).unwrap();
+    }
+
+    fn truncate(&mut self, n: usize) {
+        heapless09::Vec::truncate(self, n)
+    }
+}
+
 /// Object-safe trait for files.
 ///
 /// The methods for opening files cannot be implemented in this trait.  Use these methods instead:

src/fs.rs

@@ -744,7 +744,7 @@ impl<'a, 'b, Storage: driver::Storage> File<'a, 'b, Storage> {
     }
 
     // This belongs in `io::Read` but really don't want that to have a generic parameter
-    pub fn read_to_end<const N: usize>(&self, buf: &mut heapless::Vec<u8, N>) -> Result<usize> {
+    pub fn read_to_end(&self, buf: &mut heapless::VecView<u8>) -> Result<usize> {
         // My understanding of
         // https://github.com/littlefs-project/littlefs/blob/4c9146ea539f72749d6cc3ea076372a81b12cb11/lfs.c#L2816
         // is that littlefs keeps reading until either the buffer is full, or the file is exhausted