add branch add/remove example

Author: marwan-at-work

_examples/branch_add_remove/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"os"
+
+	"gopkg.in/src-d/go-git.v4"
+	. "gopkg.in/src-d/go-git.v4/_examples"
+	"gopkg.in/src-d/go-git.v4/plumbing"
+)
+
+// Basic example of how to checkout a specific commit.
+func main() {
+	CheckArgs("<url>", "<directory>")
+	url, directory := os.Args[1], os.Args[2]
+
+	// Clone the given repository to the given directory
+	Info("git clone %s %s", url, directory)
+	r, err := git.PlainClone(directory, false, &git.CloneOptions{
+		URL: url,
+	})
+	CheckIfError(err)
+
+	// ... retrieving the commit being pointed by HEAD
+	Info("git checkout -b <branch-name>")
+
+	headRef, err := r.Head()
+	CheckIfError(err)
+
+	// refs/heads/ is mandatory since go-git deals
+	// with references not branches.
+	branchName := "refs/heads/myBranch"
+
+	// You can use plumbing.NewReferenceFromStrings if you want to checkout a branch at a specific commit.
+	ref := plumbing.NewHashReference(plumbing.ReferenceName(branchName), headRef.Hash())
+
+	err = r.Storer.SetReference(ref)
+	CheckIfError(err)
+
+	Info("git branch -D <branch-name>")
+
+	err = r.Storer.RemoveReference(ref.Name())
+	CheckIfError(err)
+}

_examples/common_test.go

@@ -15,18 +15,19 @@ var examplesTest = flag.Bool("examples", false, "run the examples tests")
 var defaultURL = "https://github.com/git-fixtures/basic.git"
 
 var args = map[string][]string{
-	"checkout":    {defaultURL, tempFolder(), "35e85108805c84807bc66a02d91535e1e24b38b9"},
-	"clone":       {defaultURL, tempFolder()},
-	"context":     {defaultURL, tempFolder()},
-	"commit":      {cloneRepository(defaultURL, tempFolder())},
-	"custom_http": {defaultURL},
-	"open":        {cloneRepository(defaultURL, tempFolder())},
-	"progress":    {defaultURL, tempFolder()},
-	"push":        {setEmptyRemote(cloneRepository(defaultURL, tempFolder()))},
-	"revision":    {cloneRepository(defaultURL, tempFolder()), "master~2^"},
-	"showcase":    {defaultURL, tempFolder()},
-	"tag":         {cloneRepository(defaultURL, tempFolder())},
-	"pull":        {createRepositoryWithRemote(tempFolder(), defaultURL)},
+	"branch_add_remove": {defaultURL, tempFolder()},
+	"checkout":          {defaultURL, tempFolder(), "35e85108805c84807bc66a02d91535e1e24b38b9"},
+	"clone":             {defaultURL, tempFolder()},
+	"context":           {defaultURL, tempFolder()},
+	"commit":            {cloneRepository(defaultURL, tempFolder())},
+	"custom_http":       {defaultURL},
+	"open":              {cloneRepository(defaultURL, tempFolder())},
+	"progress":          {defaultURL, tempFolder()},
+	"push":              {setEmptyRemote(cloneRepository(defaultURL, tempFolder()))},
+	"revision":          {cloneRepository(defaultURL, tempFolder()), "master~2^"},
+	"showcase":          {defaultURL, tempFolder()},
+	"tag":               {cloneRepository(defaultURL, tempFolder())},
+	"pull":              {createRepositoryWithRemote(tempFolder(), defaultURL)},
 }
 
 var ignored = map[string]bool{}