Expose log_bytes! macro for use in other crates

[rust-lightning] / lightning / src / util / logger.rs

diff --git a/lightning/src/util/logger.rs b/lightning/src/util/logger.rs
index b34d1f0b782d8618756edc28e3d4a4791be0779f..01b024065b29240284f507fd4bb3f9501641fecb 100644 (file)
--- a/lightning/src/util/logger.rs
+++ b/lightning/src/util/logger.rs
@@ -120,6 +120,18 @@ pub trait Logger {
        fn log(&self, record: &Record);
 }
 
+/// Wrapper for logging byte slices in hex format.
+#[doc(hidden)]
+pub struct DebugBytes<'a>(pub &'a [u8]);
+impl<'a> core::fmt::Display for DebugBytes<'a> {
+       fn fmt(&self, f: &mut core::fmt::Formatter) -> Result<(), core::fmt::Error> {
+               for i in self.0 {
+                       write!(f, "{:02x}", i)?;
+               }
+               Ok(())
+       }
+}
+
 #[cfg(test)]
 mod tests {
        use util::logger::{Logger, Level};