README.md

@@ -1,14 +1,15 @@
-### The "Help" package
+### The "Version" package
 
-This package provides --help flag feature to your cli.
+This package provides --version flag feature to your cli.
-It recognize both short and long flags.
+It recognize both short and long flags. Version number is
+automatically added from the latest tag in your git repository.
 
 -------------
 
 ### Usage
 1. Download the package by **go get** command:
 ```shell
-go get code.foilhatguy.casa/pub/help
+go get code.foilhatguy.casa/pub/version
 ```
 2. Add the package as a tool dependency to your project in
 tools.go:
@@ -18,28 +19,23 @@ tools.go:
 package tools
 
 import (
-	_ "code.foilhatguy.casa/pub/help"
+	_ "code.foilhatguy.casa/pub/version"
 )
 ```
 3. In the main package add a go:generate directive:
 ```go
-//go:generate go run code.foilhatguy.casa/pub/help HELP.md
+//go:generate go run code.foilhatguy.casa/pub/version
 ```
-The last part in this directive is a name of the help file for
-your application. It should be placed in the root directory
-of your project along with **main.go** file. The help file
-can be written ether in the MarkDown format, or in plain text.
-MarkDown will be automatically converted in to plain text,
-which is suitable for the console output.
-
 4. Run code generator by **go generate** command: 
 ```shell
 go generate ./...
 ```
-The package will generate a **help.go** file as a part of 
+The package will detect a version number from the latest git
-the main package. It will contain code for --help flag detection.
+tag from your project. Then it will generate a **version.go** 
+file as a part of the main package. It will contain a version
+number as a constant and code for --version flag detection.
 
-5. Build and run your application with the --help flag.
+5. Build and run your application with the --version flag.
 ```shell
-go run . --help
+go run . --version
 ```

main.go

@@ -22,24 +22,25 @@ import (
 //go:embed help
 var goFS embed.FS
 
-func init() {
+func flagIsSet(arg string, sfortFlag string) bool {
-	flagIsSet := func(arg string, sfortFlag string) bool {
+    if len(arg)>1 {
-        arg = strings.Split(arg, "=")[0]
+        if arg[0] == "-"[0] && arg[1] != "-"[0] && arg[2] != "="[0] {
-        if len(arg)>1 {
+            return strings.Contains(arg, sfortFlag)
-            if arg[0] == "-"[0] && arg[1] != "-"[0] {
-                return strings.Contains(arg, sfortFlag)
-            }
         }
-        return false
     }
+    return false
+}
 
-    help, err := goFS.ReadFile("help")
+func init() {
+	help, err := goFS.ReadFile("help")
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
     
     for _, arg := range os.Args {
+        fmt.Println(flagIsSet(arg, "h"))
+        fmt.Println(arg == "--help")
         if flagIsSet(arg, "h") || arg == "--help" {
             fmt.Println(string(help))
             os.Exit(0)