From 0073103e650bd8a4b6ebcf64ff1683709e2e4239 Mon Sep 17 00:00:00 2001
From: Shulhan <ms@kilabit.info>
Date: Wed, 31 Oct 2018 23:57:53 +0700
Subject: lib/git: add function to fetch and list tags

---
 lib/git/git.go      | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/git/git_test.go | 24 +++++++++++++++++++++
 2 files changed, 86 insertions(+)

(limited to 'lib/git')

diff --git a/lib/git/git.go b/lib/git/git.go
index a77d88ee..c1e1c9de 100644
--- a/lib/git/git.go
+++ b/lib/git/git.go
@@ -161,6 +161,31 @@ func FetchAll(repoDir string) error {
 	return err
 }
 
+//
+// FetchTags will fetch all tags from remote.
+//
+func FetchTags(repoDir string) error {
+	cmd := exec.Command("git", "fetch")
+	if debug.Value == 0 {
+		cmd.Args = append(cmd.Args, "--quiet")
+	}
+	cmd.Args = append(cmd.Args, "--tags")
+	cmd.Dir = repoDir
+	cmd.Stdout = _stdout
+	cmd.Stderr = _stderr
+
+	if debug.Value >= 1 {
+		fmt.Printf("= FetchTags %s %s\n", cmd.Dir, cmd.Args)
+	}
+
+	err := cmd.Run()
+	if err != nil {
+		err = fmt.Errorf("FetchTags: %s", err)
+	}
+
+	return err
+}
+
 //
 // GetRemoteURL return remote URL or error if repository is not git or url is
 // empty.
@@ -308,6 +333,43 @@ func LatestVersion(repoDir string) (version string, err error) {
 	return
 }
 
+//
+// ListTags get all tags from repository.
+//
+func ListTags(repoDir string) (tags []string, err error) {
+	err = FetchTags(repoDir)
+	if err != nil {
+		return
+	}
+
+	cmd := exec.Command("git")
+	cmd.Args = append(cmd.Args, "tag", "--list")
+	cmd.Dir = repoDir
+	cmd.Stderr = _stderr
+
+	if debug.Value >= 1 {
+		fmt.Printf("= ListTags %s %s\n", cmd.Dir, cmd.Args)
+	}
+
+	bout, err := cmd.Output()
+	if err != nil {
+		err = fmt.Errorf("ListTag: %s", err)
+		return
+	}
+
+	sep := []byte{'\n'}
+	btags := bytes.Split(bout, sep)
+
+	for x := 0; x < len(btags); x++ {
+		if len(btags[x]) == 0 {
+			continue
+		}
+		tags = append(tags, string(btags[x]))
+	}
+
+	return
+}
+
 //
 // LogRevisions get commits between two revisions.
 //
diff --git a/lib/git/git_test.go b/lib/git/git_test.go
index e52d18b5..390c24f8 100644
--- a/lib/git/git_test.go
+++ b/lib/git/git_test.go
@@ -236,6 +236,30 @@ func TestLatestVersion(t *testing.T) {
 	}
 }
 
+func TestListTag(t *testing.T) {
+	cases := []struct {
+		desc   string
+		exp    []string
+		expErr string
+	}{{
+		desc: "With default repo",
+		exp:  []string{"v0.1.0", "v0.2.0"},
+	}}
+
+	for _, c := range cases {
+		t.Log(c.desc)
+		mock.Reset(true)
+
+		got, err := ListTags(_testRepoDir)
+		if err != nil {
+			test.Assert(t, "err", c.expErr, err.Error(), true)
+			continue
+		}
+
+		test.Assert(t, "tags", c.exp, got, true)
+	}
+}
+
 func TestLogRevisions(t *testing.T) {
 	cases := []struct {
 		desc         string
-- 
cgit v1.3