From e60fae3ee3222916da0c1dfec5eda1a4c26dec5b Mon Sep 17 00:00:00 2001
From: Abid Omar <contact@omarabid.com>
Date: Wed, 10 Apr 2024 02:58:12 +0800
Subject: [PATCH] feat: add a basic CLI for v0 CID

---
 Cargo.toml  |  2 +-
 README.md   |  8 ++++++++
 src/main.rs | 16 ++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 src/main.rs

diff --git a/Cargo.toml b/Cargo.toml
index 680301d..d65e9a0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ Generate IPFS CIDs (Content Identifiers) from a slice of bytes.
 keywords = ["ipfs", "cid", "content", "identifier", "hash"]
 authors = ["Abid Omar <contact@omarabid.com>"]
 exclude = ["tests/*", "examples/*", "data/*"]
-version = "1.0.0"
+version = "2.0.0"
 edition = "2021"
 license = "MIT"
 homepage = "https://github.com/omarabid/ipfs-cid"
diff --git a/README.md b/README.md
index f6c6495..856b2d1 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,14 @@ QmUBnCzebDwZgkXp9ZkHHKQNfaeWn2Dw8p8vNz4GN4jBLa
 
 The file is accessible from IPFS at the same hash: [QmUBnCzebDwZgkXp9ZkHHKQNfaeWn2Dw8p8vNz4GN4jBLa](https://ipfs.io/ipfs/QmUBnCzebDwZgkXp9ZkHHKQNfaeWn2Dw8p8vNz4GN4jBLa)
 
+## CLI
+
+A basic CLI is avaiable in 2.0.0. It returns v0 CID of the passed file.
+
+**Usage**
+
+$ ipfs-cid _file_
+
 ### License
 
 This project is licensed under
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..0cc92b1
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,16 @@
+// ipfs-cid is a tool to generate the CID of a file.
+// The CLI is simple and only takes a file path as an argument and prints the CID to STDOUT.
+pub fn main() {
+    let args: Vec<String> = std::env::args().collect();
+    if args.len() != 2 {
+        eprintln!("Usage: ipfs-cid <file>");
+        std::process::exit(1);
+    }
+    let path = &args[1];
+    let file = std::fs::read(path).expect("Failed to read file");
+    let cid = ipfs_cid::generate_cid_v0(&file);
+    match cid {
+        Ok(cid) => println!("{}", cid),
+        Err(e) => eprintln!("Failed to generate CID: {}", e),
+    }
+}