Added Support For -v Or --version Argument to dirtree

README.md

@@ -1,6 +1,6 @@
 # dirtree
 
-This package prints the directory tree of the current directory respecting your `.gitignore` file.
+This package prints the directory tree of the current directory, or the directory tree of the directory path specified as a command line argument respecting your `.gitignore` file.
 
 ## Installation
 
@@ -12,10 +12,10 @@ go install github.com/datumbrain/dirtree@latest
 
 ## Usage
 
-Go to any directory and run the following command to print the directory tree
+Run the command with the path of the directory as a command line argument to print the directory tree of specified directory. If no argument is specified then the directory tree of the current directory will be printed. To print the version of dirtree use -v or --version as an argument.
 
 ```bash
-dirtree
+dirtree [directory | -v | --version]
 ```
 
 ## Authors

dirtree.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"path/filepath"
 
+	"github.com/datumbrain/dirtree/internal/version"
 	gitignore "github.com/sabhiram/go-gitignore"
 )
 
@@ -17,21 +18,34 @@ func main() {
 		fmt.Println(".")
 	case 2:
 		rootDir = os.Args[1]
-		_, err := os.Stat(rootDir)
-		if os.IsNotExist(err) {
-			fmt.Println("directory does not exist")
-			os.Exit(1)
-		}
-		if err != nil {
-			fmt.Println(fmt.Errorf("error: %v", err))
+		if rootDir == "-v" || rootDir == "--version" {
+			PrintVersionInfo()
 			os.Exit(1)
+		} else {
+			_, err := os.Stat(rootDir)
+			if os.IsNotExist(err) {
+				fmt.Println("directory does not exist")
+				os.Exit(1)
+			}
+			if err != nil {
+				fmt.Println(fmt.Errorf("error: %v", err))
+				os.Exit(1)
+			}
 		}
 	default:
-		fmt.Println("Usage: dirtree [directory]")
+		fmt.Println("Usage: dirtree [directory | -v | --version]")
 		os.Exit(1)
 	}
 
 	printTree(rootDir, "", nil)
+
+}
+
+func PrintVersionInfo() {
+	versionInfo := version.Get()
+	fmt.Println(versionInfo.GitVersion)
+	fmt.Println(versionInfo.BuildDate)
+	fmt.Println(versionInfo.GitCommit)
 }
 
 func shouldIgnore(path string, ignoreMatchers []*gitignore.GitIgnore) bool {

internal/version/version.go

@@ -0,0 +1,38 @@
+package version
+
+import (
+	"fmt"
+	"runtime"
+	"time"
+)
+
+var (
+	//x.y.z
+	//x - major release
+	//y - minor release
+	//z - build number
+	gitVersion = "v1.1.0-dirtree"
+	gitCommit  = ""
+	Time       = time.Now()
+	buildDate  = Time.String()
+)
+
+type VersionInfo struct {
+	GitVersion string `json:"gitVersion" yaml:"gitVersion"`
+	GitCommit  string `json:"gitCommit" yaml:"gitCommit"`
+	BuildDate  string `json:"buildDate" yaml:"buildDate"`
+	GoVersion  string `json:"goVersion" yaml:"goVersion"`
+	Compiler   string `json:"compiler" yaml:"compiler"`
+	Program    string `json:"program" yaml:"program"`
+}
+
+func Get() *VersionInfo {
+	return &VersionInfo{
+		GitVersion: gitVersion,
+		GitCommit:  gitCommit,
+		BuildDate:  buildDate,
+		GoVersion:  runtime.Version(),
+		Compiler:   runtime.Compiler,
+		Program:    fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
+	}
+}

runscript.sh

@@ -0,0 +1,8 @@
+#!/bin/zsh
+
+BUILD_DATE="$(date -u +'%Y-%m-%dT%H:%M:%SZ')"
+GIT_COMMIT="$(git rev-parse HEAD)"
+#VERSION="$(git describe --tags --abbrev=0 | tr -d "\n")"
+
+
+go build -o bin/main -ldflags="-X 'github.com/dirtree/internal/version.buildDate=${BUILD_DATE}' -X 'github.com/dirtree/internal/version.gitCommit=${GIT_COMMIT}'" *.go