apply clippy

src/client/connection/response/success.rs

@@ -16,10 +16,10 @@ impl Success {
 
     /// Parse new `Self` from buffer bytes
     pub fn parse(buffer: &[u8]) -> Result<Self, Error> {
-        if !buffer.first().is_some_and(|b| *b == CODE) {
+        if buffer.first().is_none_or(|b| *b != CODE) {
             return Err(Error::Code);
         }
-        match Default::parse(&buffer) {
+        match Default::parse(buffer) {
             Ok(default) => Ok(Self::Default(default)),
             Err(e) => Err(Error::Default(e)),
         }

src/client/connection/response/success/default.rs

@@ -18,7 +18,7 @@ impl Default {
         if !buffer.starts_with(CODE) {
             return Err(Error::Code);
         }
-        let header = Header::parse(buffer).map_err(|e| Error::Header(e))?;
+        let header = Header::parse(buffer).map_err(Error::Header)?;
         Ok(Self {
             content: buffer.get(header.len() + 1..).map(|v| v.to_vec()),
             header,

src/client/connection/response/success/default/header.rs

@@ -12,7 +12,7 @@ impl Header {
         }
         Ok(Self(
             crate::client::connection::response::header_bytes(buffer)
-                .map_err(|e| Error::Header(e))?
+                .map_err(Error::Header)?
                 .to_vec(),
         ))
     }
@@ -23,7 +23,7 @@ impl Header {
     pub fn mime(&self) -> Result<String, Error> {
         glib::Regex::split_simple(
             r"^\d{2}\s([^\/]+\/[^\s;]+)",
-            std::str::from_utf8(&self.0).map_err(|e| Error::Utf8Error(e))?,
+            std::str::from_utf8(&self.0).map_err(Error::Utf8Error)?,
             glib::RegexCompileFlags::DEFAULT,
             glib::RegexMatchFlags::DEFAULT,
         )
@@ -37,6 +37,10 @@ impl Header {
         self.0.len()
     }
 
+    pub fn is_empty(&self) -> bool {
+        self.0.is_empty()
+    }
+
     pub fn as_bytes(&self) -> &[u8] {
         &self.0
     }