Feature: Ability to display changed files from the latest commit (#7)

Author: vshatravenko

README.md

@@ -14,3 +14,4 @@ This will do the following:
 2. Update `opendax/2-6/versions.yaml` component tag
 3. Commit and push the updates
 
+To display all files updated in the latest Git commit, run `goci -depth 1 changes`, where depth is the depth of directories you'd like to use(dir1/dir2/...dirn)

cmd/goci/changes.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/go-git/go-git/v5"
+)
+
+func actionChanges() error {
+	repo, err := git.PlainOpen(".")
+	if err != nil {
+		return err
+	}
+
+	ref, err := repo.Head()
+	if err != nil {
+		return err
+	}
+
+	commit, err := repo.CommitObject(ref.Hash())
+	if err != nil {
+		return err
+	}
+
+	stats, err := commit.Stats()
+	if err != nil {
+		return err
+	}
+
+	var changedFiles []string
+
+	for _, stat := range stats {
+		changedFiles = append(changedFiles, stat.Name)
+	}
+
+	if Depth == 0 {
+		fmt.Printf("%s\n", strings.Join(changedFiles, " "))
+	} else {
+		var res []string
+		keys := make(map[string]int)
+
+		for _, f := range changedFiles {
+			if _, ok := keys[f]; !ok {
+				keys[f] = 1
+				filepath := strings.Split(f, "/")
+
+				if len(filepath) >= Depth {
+					filepath = filepath[0:Depth]
+				}
+
+				res = append(res, strings.Join(filepath, "/"))
+			}
+		}
+
+		fmt.Printf("%s\n", strings.Join(res, " "))
+	}
+
+	return nil
+}

cmd/goci/main.go

@@ -19,6 +19,9 @@ var Component string
 // Tag of the component
 var Tag string
 
+// Changed file display depth(dir1/dir2/.../dir*depth*)
+var Depth = 0
+
 func main() {
 	cli := kli.NewCli("goci", "Openware versions cli", Version)
 
@@ -28,6 +31,10 @@ func main() {
 	cli.StringFlag("tag", "Tag to insert into the versions file", &Tag)
 	cli.AddCommand(cmdVersions)
 
+	cmdChanges := kli.NewCommand("changes", "List files changed in the last commit").Action(actionChanges)
+	cli.IntFlag("depth", "Depth of directories changed in the latest git commit", &Depth)
+	cli.AddCommand(cmdChanges)
+
 	if err := cli.Run(); err != nil {
 		fmt.Printf("Error encountered: %v\n", err)
 		os.Exit(1)