From 3117b2fc4ff9cb3609f2c8ad4219df2ca37a23f7 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Mon, 23 Jun 2025 10:11:26 +0200
Subject: Add example which returns the root hash of a MT using Blake3

---
 examples/merkletree_blake3.rs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 examples/merkletree_blake3.rs

diff --git a/examples/merkletree_blake3.rs b/examples/merkletree_blake3.rs
new file mode 100644
index 0000000..6b2adc0
--- /dev/null
+++ b/examples/merkletree_blake3.rs
@@ -0,0 +1,28 @@
+use mt_rs::{hasher::Blake3Hasher, merkletree::MerkleTree};
+
+fn main() {
+    // Collect filenames from command line arguments
+    let filenames: Vec<String> = std::env::args().skip(1).collect();
+
+    if filenames.is_empty() {
+        eprintln!("Usage: cargo run --exmaple merkletree_blake3 -- <file1> <file2> ...");
+        std::process::exit(1);
+    }
+
+    // Read file contents into a vector of bytes
+    let mut file_contents = Vec::new();
+    for filename in &filenames {
+        match std::fs::read(filename) {
+            Ok(contents) => file_contents.push(contents),
+            Err(e) => {
+                eprintln!("Failed to read file '{}': {}", filename, e);
+                std::process::exit(1);
+            }
+        }
+    }
+
+    let hasher = Blake3Hasher::new();
+    let tree = MerkleTree::new(hasher.clone(), file_contents.clone());
+
+    println!("{}", tree.root().hash());
+}
-- 
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