1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/der/src/writer.rs b/vendor/der/src/writer.rs
new file mode 100644
index 000000000..5e9774413
--- /dev/null
+++ b/vendor/der/src/writer.rs
@@ -0,0 +1,30 @@
+//! Writer trait.
+
+#[cfg(feature = "pem")]
+pub(crate) mod pem;
+pub(crate) mod slice;
+
+use crate::Result;
+
+#[cfg(feature = "std")]
+use std::io;
+
+/// Writer trait which outputs encoded DER.
+pub trait Writer {
+    /// Write the given DER-encoded bytes as output.
+    fn write(&mut self, slice: &[u8]) -> Result<()>;
+
+    /// Write a single byte.
+    fn write_byte(&mut self, byte: u8) -> Result<()> {
+        self.write(&[byte])
+    }
+}
+
+#[cfg(feature = "std")]
+#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
+impl<W: io::Write> Writer for W {
+    fn write(&mut self, slice: &[u8]) -> Result<()> {
+        <Self as io::Write>::write(self, slice)?;
+        Ok(())
+    }
+}