初步搭建代码框架 包括objects, tests, utils

src/lib.rs

@@ -0,0 +1,3 @@
+// 不使用lib.rs的话，就无法在tests里引用到src中的模块
+pub mod objects;
+pub mod utils;

src/main.rs

@@ -1,3 +1,5 @@
+use std::collections::HashMap;
+type Index = HashMap<String, bool>;
 fn main() {
     println!("Hello, world!");
 }

src/objects/blob.rs

@@ -0,0 +1,6 @@
+use crate::objects::object::Hash;
+#[derive(Debug, Clone)]
+pub struct Blob {
+    hash: Hash,
+    data: String,
+}

src/objects/mod.rs

@@ -0,0 +1,4 @@
+pub mod commit;
+pub mod blob;
+pub mod tree;
+mod object;

src/objects/object.rs

@@ -0,0 +1 @@
+pub type Hash = String;

src/utils/mod.rs

@@ -0,0 +1 @@
+pub mod util;

src/utils/util.rs

@@ -0,0 +1,11 @@
+use sha1::{
+    Digest,
+    Sha1
+};
+
+pub fn calc_hash(data: &String) -> String {
+    let mut hasher = Sha1::new();
+    hasher.update(data);
+    let hash = hasher.finalize();
+    hex::encode(hash)
+}