Add create shelf command

Author: iamd3vil

.gitignore

@@ -15,3 +15,4 @@
 # Dependency directories (remove the comment below to include it)
 # vendor/
 
+shelf.bin

Makefile

@@ -0,0 +1,2 @@
+build:
+	go build -o shelf.bin ./cmd/shelf

cmd/shelf/actions.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"path"
+
+	"github.com/urfave/cli/v2"
+)
+
+// CreateShelf creates a new shelf
+func CreateShelf(cliCtx *cli.Context) error {
+	// Get Home Directory path
+	home, err := GetHomeDirectory()
+	if err != nil {
+		return err
+	}
+
+	shelfName := cliCtx.Args().First()
+
+	if shelfName == "" {
+		return errors.New("Shelf name has to be given")
+	}
+
+	shelfPath := path.Join(home, shelfName)
+
+	err = os.Mkdir(shelfPath, 0755)
+	if err != nil {
+		if os.IsExist(err) {
+			return fmt.Errorf("Shelf named: \"%s\" already exist", shelfName)
+		}
+		return err
+	}
+
+	err = os.Chdir(shelfPath)
+	if err != nil {
+		return err
+	}
+
+	// Initialize git in the shelf
+	cmd := exec.Command("git", "init")
+	err = cmd.Run()
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("[*] Created a shelf named: %s", shelfName)
+
+	return nil
+}

cmd/shelf/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	cli "github.com/urfave/cli/v2" // imports as package "cli"
+	"log"
+	"os"
+)
+
+func main() {
+	app := &cli.App{
+		Commands: []*cli.Command{
+			{
+				Name:    "create",
+				Aliases: []string{"c"},
+				Usage:   "complete a task on the list",
+				Action:  CreateShelf,
+			},
+		},
+		Name:        "shelf",
+		Description: "A Good Symlinks Manager",
+	}
+
+	err := app.Run(os.Args)
+	if err != nil {
+		log.Fatal(err)
+	}
+}

cmd/shelf/utils.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"os"
+	"path"
+	"runtime"
+)
+
+// GetHomeDirectory gets the directory in user's home folder
+// where all shelves are stored. If a directory doesn't exist it creates one.
+func GetHomeDirectory() (string, error) {
+	// Get Home Directory path
+	home := getHomeDirectoryPath()
+	_, err := os.Stat(home)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = os.Mkdir(home, 0755)
+			if err != nil {
+				return "", err
+			}
+			return home, nil
+		}
+		return "", err
+	}
+
+	return home, nil
+}
+
+func getHomeDirectoryPath() string {
+	var (
+		home string
+	)
+	if runtime.GOOS == "linux" {
+		home = os.Getenv("XDG_CONFIG_HOME")
+		if home == "" {
+			home = os.Getenv("HOME")
+		}
+	}
+	return path.Join(home, ".shelves")
+}

go.mod

@@ -0,0 +1,5 @@
+module github.com/iamd3vil/shelf
+
+go 1.14
+
+require github.com/urfave/cli/v2 v2.2.0

go.sum

@@ -0,0 +1,13 @@
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
+github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
+github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
+github.com/urfave/cli/v2 v2.2.0 h1:JTTnM6wKzdA0Jqodd966MVj4vWbbquZykeX1sKbe2C4=
+github.com/urfave/cli/v2 v2.2.0/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=