From 7887a482dc7951a88fd0b2a4caa8988f0aef4340 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Wed, 6 Sep 2023 23:23:08 -0400
Subject: add hex.h, refactor main.c

---
 hex.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 hex.h

(limited to 'hex.h')

diff --git a/hex.h b/hex.h
new file mode 100644
index 0000000..246aeed
--- /dev/null
+++ b/hex.h
@@ -0,0 +1,15 @@
+#ifndef HEX_H
+#define HEX_H
+
+#include <stdio.h> // fprintf()
+#include <stdint.h> // uint8_t
+
+// print hex-encoded buffer to given file handle.
+// (used by top-level main.c)
+static void hex_write(FILE *fh, const uint8_t * const buf, const size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    fprintf(fh, "%02x", buf[i]);
+  }
+}
+
+#endif /* HEX_H */
-- 
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