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80 lines
2.2 KiB
Rust
80 lines
2.2 KiB
Rust
use serde::{Deserialize, Serialize};
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use crate::store;
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use super::{index::Index, object::Hash, tree::Tree};
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/*Commit
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* git中版本控制的单位。
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* 一份Commit中对应一份版Tree，记录了该版本所包含的文件；parent记录本次commit的来源，形成了版本树；
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* 此外，Commit中还包含了作者、提交者、提交信息等。
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*/
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#[derive(Debug, Clone, Deserialize, Serialize)]
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pub struct Commit {
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#[serde(skip)]
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hash: Hash,
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author: String, // unimplemented ignore
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committer: String, // unimplemented ignore
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message: String,
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parent: Vec<Hash>, // parents commit hash
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tree: String, // tree hash
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}
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impl Commit {
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pub fn new(index: &Index, parent: Vec<Hash>, message: String) -> Commit {
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let mut tree = Tree::new(index);
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let tree_hash = tree.save();
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Commit {
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hash: "".to_string(),
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author: "mit".to_string(),
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committer: "mit-author".to_string(),
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message,
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parent,
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tree: tree_hash,
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}
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}
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pub fn load(hash: &String) -> Commit {
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let s = store::Store::new();
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let commit_data = s.load(hash);
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let mut commit: Commit = serde_json::from_str(&commit_data).unwrap();
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commit.hash = hash.clone();
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commit
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}
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pub fn save(&mut self) -> String {
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// unimplemented!()
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let s = store::Store::new();
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let commit_data = serde_json::to_string_pretty(&self).unwrap();
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let hash = s.save(&commit_data);
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self.hash = hash.clone();
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hash
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}
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}
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#[cfg(test)]
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mod test {
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use crate::utils::util;
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#[test]
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fn test_commit() {
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util::setup_test_with_mit();
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let index = super::Index::new();
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let mut commit = super::Commit::new(
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&index,
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vec!["123".to_string(), "456".to_string()],
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"test".to_string(),
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);
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assert!(commit.hash.len() == 0);
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let hash = commit.save();
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assert!(commit.hash == hash, "commit hash not equal");
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let commit = super::Commit::load(&hash);
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assert!(commit.hash == hash);
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assert!(commit.hash.len() != 0);
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assert!(commit.parent.len() == 2);
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println!("{:?}", commit)
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}
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}
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