openpgp: New constructor hex::Dumper::with_offset.

2 files changed, 13 insertions, 1 deletions

diff --git a/openpgp/NEWS b/openpgp/NEWS
index cfabfe07..2bd12a72 100644
--- a/openpgp/NEWS
+++ b/openpgp/NEWS
@@ -10,6 +10,7 @@
    - crypto::mem::Protected::new
    - crypto::mpi::SecretKeyMaterial::from_bytes
    - crypto::mpi::SecretKeyMaterial::from_bytes_with_checksum
+   - fmt::hex::Dumper::with_offset
    - policy::AsymmetricAlgorithm::BrainpoolP384
 ** Deprecated functionality
    - crypto::mpi::SecretKeyMaterial::parse
diff --git a/openpgp/src/fmt.rs b/openpgp/src/fmt.rs
index 5f3cd206..65b1b79c 100644
--- a/openpgp/src/fmt.rs
+++ b/openpgp/src/fmt.rs
@@ -71,10 +71,21 @@ pub mod hex {
         /// The dump is written to `inner`.  Every line is indented with
         /// `indent`.
         pub fn new<I: AsRef<str>>(inner: W, indent: I) -> Self {
+            Self::with_offset(inner, indent, 0)
+        }
+
+        /// Creates a new dumper starting at the given offset.
+        ///
+        /// The dump is written to `inner`.  Every line is indented with
+        /// `indent`.
+        pub fn with_offset<I>(inner: W, indent: I, offset: usize) -> Self
+        where
+            I: AsRef<str>,
+        {
             Dumper {
                 inner,
                 indent: indent.as_ref().into(),
-                offset: 0,
+                offset,
             }
         }