Update heapless

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.??.?] - ?
 * Added the opt-out `asyncify` feature. Disabling this feature removes the `atomic-waker` dependencies and removes the `utils::asyncify` module.
 * The `serde` dependency is now optional.
+* Update to `heapless` 0.8
 
 ## [0.26.4] - 2023-11-12
 * Updated changelog

Cargo.toml

@@ -22,11 +22,11 @@ experimental = []
 use_serde = ["dep:serde", "enumset/serde", "no-std-net/serde", "heapless/serde"]
 use_strum = ["strum", "strum_macros"]
 use_numenum = ["num_enum"]
-defmt = ["dep:defmt", "heapless/defmt", "heapless/defmt-impl", "embedded-io/defmt-03", "embedded-io-async?/defmt-03", "embedded-hal-async?/defmt-03"]
+defmt = ["dep:defmt", "heapless/defmt-03", "embedded-io/defmt-03", "embedded-io-async?/defmt-03", "embedded-hal-async?/defmt-03"]
 asyncify = ["dep:atomic-waker"]
 
 [dependencies]
-heapless = { version = "0.7" }
+heapless = { version = "0.8" }
 embedded-io = { version = "0.6", default-features = false }
 embedded-io-async = { version = "0.6", default-features = false, optional = true }
 embedded-hal-async = { version = "=1.0.0-rc.1", default-features = false, optional = true }

src/http.rs

@@ -170,14 +170,16 @@ where
 }
 
 pub mod headers {
+    use core::convert::TryFrom;
+
     pub type ContentLenParseBuf = heapless::String<20>;
 
     pub fn content_type(ctype: &str) -> (&str, &str) {
         ("Content-Type", ctype)
     }
 
     pub fn content_len(len: u64, buf: &mut ContentLenParseBuf) -> (&str, &str) {
-        *buf = ContentLenParseBuf::from(len);
+        *buf = ContentLenParseBuf::try_from(len).unwrap();
 
         ("Content-Length", buf.as_str())
     }

src/http/server.rs

@@ -1,4 +1,7 @@
-use core::fmt::{self, Debug, Display, Write as _};
+use core::{
+    convert::TryInto,
+    fmt::{self, Debug, Display, Write as _},
+};
 
 use crate::io::{Error, Read, Write};
 
@@ -222,7 +225,7 @@ pub struct HandlerError(heapless::String<64>);
 
 impl HandlerError {
     pub fn new(message: &str) -> Self {
-        Self(message.into())
+        Self(message.try_into().unwrap())
     }
 
     pub fn message(&self) -> &str {
@@ -239,10 +242,10 @@ where
     E: Debug,
 {
     fn from(e: E) -> Self {
-        let mut string: heapless::String<64> = "".into();
+        let mut string = heapless::String::<64>::new();
 
         if write!(&mut string, "{e:?}").is_err() {
-            string = "(Error string too big)".into();
+            string = "(Error string too big)".try_into().unwrap();
         }
 
         Self(string)

src/utils/http.rs

@@ -1,4 +1,4 @@
-use core::str;
+use core::{convert::TryFrom, str};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
@@ -101,7 +101,7 @@ impl<'b, const N: usize> Headers<'b, N> {
         content_len: u64,
         buf: &'b mut heapless::String<20>,
     ) -> &mut Self {
-        *buf = heapless::String::<20>::from(content_len);
+        *buf = heapless::String::<20>::try_from(content_len).unwrap();
 
         self.set("Content-Length", buf.as_str())
     }
@@ -372,6 +372,7 @@ pub mod server {
     }
 
     pub mod session {
+        use core::convert::TryInto;
         use core::fmt;
         use core::time::Duration;
 
@@ -444,7 +445,7 @@ pub mod server {
 
                 for entry in &mut *data {
                     if entry.last_accessed + entry.timeout < current_time {
-                        entry.id = "".into();
+                        entry.id = heapless::String::new();
                     }
                 }
             }
@@ -515,7 +516,7 @@ pub mod server {
                 {
                     Ok(f(&mut entry.data))
                 } else if let Some(entry) = data.iter_mut().find(|entry| entry.id == "") {
-                    entry.id = session_id.into();
+                    entry.id = session_id.try_into().unwrap();
                     entry.data = Default::default();
                     entry.timeout = self.default_session_timeout;
                     entry.last_accessed = current_time;
@@ -537,7 +538,7 @@ pub mod server {
                         .iter_mut()
                         .find(|entry| entry.id.as_str() == session_id)
                     {
-                        entry.id = "".into();
+                        entry.id = heapless::String::new();
                         true
                     } else {
                         false

src/wifi.rs

@@ -1,3 +1,4 @@
+use core::convert::TryInto;
 use core::fmt::Debug;
 use core::mem;
 
@@ -157,13 +158,13 @@ pub struct AccessPointConfiguration {
 impl Default for AccessPointConfiguration {
     fn default() -> Self {
         Self {
-            ssid: "iot-device".into(),
+            ssid: "iot-device".try_into().unwrap(),
             ssid_hidden: false,
             channel: 1,
             secondary_channel: None,
             protocols: Protocol::P802D11B | Protocol::P802D11BG | Protocol::P802D11BGN,
             auth_method: AuthMethod::None,
-            password: "".into(),
+            password: heapless::String::new(),
             max_connections: 255,
         }
     }
@@ -195,10 +196,10 @@ impl Debug for ClientConfiguration {
 impl Default for ClientConfiguration {
     fn default() -> Self {
         ClientConfiguration {
-            ssid: "".into(),
+            ssid: heapless::String::new(),
             bssid: None,
             auth_method: Default::default(),
-            password: "".into(),
+            password: heapless::String::new(),
             channel: None,
         }
     }