初步编写add逻辑；新增终端颜色库

src/commands/add.rs

@@ -0,0 +1,45 @@
+use std::env;
+use std::path::{Path, PathBuf};
+use colored::Colorize;
+use crate::models::index::Index;
+use crate::utils::util::{check_repo_exist, get_working_dir, list_files};
+
+pub fn add(files: Vec<String>, all: bool, mut update: bool) {
+    check_repo_exist();
+    let index = Index::new();
+    let mut dot = files.contains(&".".to_string());
+
+    let mut files: Vec<PathBuf> = files.into_iter().map(PathBuf::from).collect();
+
+    if dot || all || update{
+        if all { // all 优先级最高
+            dot = false;
+            update = false;
+        } else if update {
+            dot = false;
+        }
+
+        let path = if all || update {
+            println!("{}", "--all || --update 运行于工作区目录".bright_green());
+            get_working_dir().unwrap()
+        } else {
+            println!("{}", "'.'代表了当前目录".bright_green());
+            env::current_dir().unwrap()
+        };
+        println!("Working on [{}]\n", path.to_str().unwrap().bright_blue());
+        files = list_files(&*path).unwrap();
+        if update {
+            files.retain(|file|{
+                index.contains(file)
+            });
+        }
+    }
+
+    for file in files {
+        add_a_file(file.as_path(), &index);
+    }
+}
+
+fn add_a_file(file: &Path, index: &Index) {
+    println!("add a file: {:?}", file);
+}