Print correct and incorrect MD5 checksums in color

type: changed

src/file_error.rs

@@ -67,32 +67,30 @@ impl From<io::Error> for FileError {
   }
 }
 
-impl Display for FileError {
-  fn fmt(&self, f: &mut Formatter) -> fmt::Result {
-    match self {
-      Self::Io(io_error) => write!(f, "{}", io_error),
-      Self::Missing => write!(f, "File missing"),
-      Self::Directory => write!(f, "Expected file but found directory"),
-      Self::Surfeit(difference) => write!(f, "{} too long", difference),
-      Self::Dearth(difference) => write!(f, "{} too short", difference),
-      Self::Md5 { actual, expected } => write!(
-        f,
-        "MD5 checksum mismatch: {} (expected {})",
-        actual, expected
-      ),
-    }
-  }
-}
-
 impl Print for FileError {
   fn print(&self, stream: &mut OutputStream) -> io::Result<()> {
     let style = stream.style();
-    write!(
+
-      stream,
+    if let Self::Md5 { actual, expected } = self {
-      "{}{}{}",
+      write!(
-      style.error().prefix(),
+        stream,
-      self,
+        "MD5 checksum mismatch: {} (expected {})",
-      style.error().suffix(),
+        style.error().paint(actual.to_string()),
-    )
+        style.good().paint(expected.to_string()),
+      )?;
+
+      return Ok(());
+    }
+
+    match self {
+      Self::Io(io_error) => write!(stream, "{}", io_error)?,
+      Self::Missing => write!(stream, "File missing")?,
+      Self::Directory => write!(stream, "Expected file but found directory")?,
+      Self::Surfeit(difference) => write!(stream, "{} too long", difference)?,
+      Self::Dearth(difference) => write!(stream, "{} too short", difference)?,
+      Self::Md5 { .. } => unreachable!(),
+    }
+
+    Ok(())
   }
 }

src/style.rs

@@ -42,6 +42,14 @@ impl Style {
     }
   }
 
+  pub(crate) fn good(self) -> ansi_term::Style {
+    if self.active {
+      ansi_term::Style::new().fg(ansi_term::Color::Green).bold()
+    } else {
+      ansi_term::Style::new()
+    }
+  }
+
   pub(crate) fn dim(self) -> ansi_term::Style {
     if self.active {
       ansi_term::Style::new().dimmed()

src/subcommand/torrent/verify.rs

@@ -408,7 +408,7 @@ mod tests {
         style.message().prefix(),
         path,
         style.message().suffix(),
-        style.error().paint(message)
+        message,
       )
     }
 
@@ -428,10 +428,11 @@ mod tests {
           create_env.resolve("foo").display()
         ))
       ),
-      &error(
+      &format!(
-        "a",
+        "{} MD5 checksum mismatch: {} (expected {})",
-        "MD5 checksum mismatch: d16fb36f911f878998c136191af705e (expected \
+        style.message().paint("a:"),
-         90150983cd24fb0d6963f7d28e17f72)",
+        style.error().paint("d16fb36f911f878998c136191af705e"),
+        style.good().paint("90150983cd24fb0d6963f7d28e17f72"),
       ),
       &error("d", "1 byte too long"),
       &error("h", "1 byte too short"),