openpgp: Add a function to pretty print a BufferedReader stack

1 files changed, 22 insertions, 0 deletions

diff --git a/openpgp/src/parse/parse.rs b/openpgp/src/parse/parse.rs
index ea89964f..24844004 100644
--- a/openpgp/src/parse/parse.rs
+++ b/openpgp/src/parse/parse.rs
@@ -600,6 +600,28 @@ impl Cookie {
             reader = r.get_mut();
         }
     }
+
+    // A helpful debugging aid to pretty print a Buffered Reader
+    // stack.
+    #[allow(dead_code)]
+    fn dump(reader: &BufferedReader<Cookie>) {
+        let mut i = 1;
+        let mut reader : Option<&BufferedReader<Cookie>> = Some(reader);
+        while let Some(r) = reader {
+            {
+                let cookie = r.cookie_ref();
+
+                eprint!("  {}. {}, level: {:?}",
+                        i, r, cookie.level);
+                if cookie.hashes_for != HashesFor::Nothing {
+                    eprint!(", hashes for: {:?}", cookie.hashes_for);
+                }
+                eprint!("\n");
+            }
+            reader = r.get_ref();
+            i = i + 1;
+        }
+    }
 }
 
 // Pops readers from a buffered reader stack at the specified level.