update memory input stream errors handler

src/gio/memory_input_stream.rs

@@ -20,7 +20,7 @@ pub fn from_stream_async(
     bytes_in_chunk: usize,
     bytes_total_limit: usize,
     on_chunk: impl Fn((Bytes, usize)) + 'static,
-    on_complete: impl FnOnce(Result<MemoryInputStream, (Error, Option<&str>)>) + 'static,
+    on_complete: impl FnOnce(Result<MemoryInputStream, Error>) + 'static,
 ) {
     read_all_from_stream_async(
         MemoryInputStream::new(),
@@ -43,7 +43,7 @@ pub fn read_all_from_stream_async(
     bytes: (usize, usize, usize),
     callback: (
         impl Fn((Bytes, usize)) + 'static,
-        impl FnOnce(Result<MemoryInputStream, (Error, Option<&str>)>) + 'static,
+        impl FnOnce(Result<MemoryInputStream, Error>) + 'static,
     ),
 ) {
     let (on_chunk, on_complete) = callback;
@@ -63,7 +63,7 @@ pub fn read_all_from_stream_async(
 
                 // Validate max size
                 if bytes_total > bytes_total_limit {
-                    return on_complete(Err((Error::BytesTotal, None)));
+                    return on_complete(Err(Error::BytesTotal(bytes_total, bytes_total_limit)));
                 }
 
                 // No bytes were read, end of stream
@@ -85,7 +85,7 @@ pub fn read_all_from_stream_async(
                 );
             }
             Err(reason) => {
-                on_complete(Err((Error::InputStream, Some(reason.message()))));
+                on_complete(Err(Error::InputStream(reason)));
             }
         },
     );

src/gio/memory_input_stream/error.rs

@@ -1,5 +1,20 @@
+use std::fmt::{Display, Formatter, Result};
+
 #[derive(Debug)]
 pub enum Error {
-    BytesTotal,
-    InputStream,
+    BytesTotal(usize, usize),
+    InputStream(glib::Error),
+}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut Formatter) -> Result {
+        match self {
+            Self::BytesTotal(total, limit) => {
+                write!(f, "Bytes total limit reached: {total} / {limit}")
+            }
+            Self::InputStream(reason) => {
+                write!(f, "Input stream error: {reason}")
+            }
+        }
+    }
 }