show version

go.mod

@@ -1,3 +1,5 @@
 module git.milar.in/milarin/loadenv
 
 go 1.18
+
+require git.milar.in/milarin/buildinfo v1.0.0

go.sum

@@ -0,0 +1,2 @@
+git.milar.in/milarin/buildinfo v1.0.0 h1:tw98GupUYl/0a/3aPGuezhE4wseycOSsbcLp70hy60U=
+git.milar.in/milarin/buildinfo v1.0.0/go.mod h1:arI9ZoENOgcZcanv25k9y4dKDUhPp0buJrlVerGruas=

main.go

@@ -8,6 +8,8 @@ import (
 	"os"
 	"os/exec"
 	"regexp"
+
+	"git.milar.in/milarin/buildinfo"
 )
 
 var (
@@ -15,11 +17,18 @@ var (
 
 	EnvVarRegex     = regexp.MustCompile(`^(.*?)=(.*?)$`)
 	EnvCommentRegex = regexp.MustCompile(`^[ \t]*#.*?$`)
+
+	ShowVersion = flag.Bool("v", false, "show version and exit")
 )
 
 func main() {
 	flag.Parse()
 
+	if *ShowVersion {
+		buildinfo.Print(buildinfo.Options{})
+		return
+	}
+
 	envFile, err := os.Open(*EnvFilePath)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "could not open file '%s': %s\n", *EnvFilePath, err.(*os.PathError).Err)