Merge pull request 996icu#25192 from panjf2000/master

Get licenses' names from reading the licenses dir dynamically

archived/licenses[WIP]/tools/gen-license-go/README.md

@@ -8,7 +8,7 @@ More importantly, the main purpose of this tool is to incorporate those aforesai
 a brand new license: 996.icu, defined by [996.icu](https://github.com/996icu/996.ICU).
 
 ## Usage
-There are three executable files of different operating systems: macOS, Linux and Windows, located in `bin` directory, you can pick the specific bin file based on your OS, then put the `licenses` directory and `gen-license-go` file into the same path.
+There are three executable files for different operating systems: macOS, Linux and Windows, located in `bin` directory, you can pick the specific bin file based on your OS, then put the `licenses` directory and `gen-license-go` file into the same path.
 ```sh
  # Get the help from this tool:
 ./gen-license-go -h

archived/licenses[WIP]/tools/gen-license-go/cmd/gen.go

@@ -26,7 +26,7 @@ import (
 )
 
 var template string
-var licensePathTemplate, icuPathTemplate = "licenses/%s.txt", "licenses/996.icu.template.%s.txt"
+var licensePathTemplate, icuPathTemplate = "licenses/%s.txt", "licenses/templates/996.icu.template.%s.txt"
 
 // genCmd represents the gen command
 var genCmd = &cobra.Command{
@@ -72,6 +72,7 @@ gen-license-go gen mit --996icu en-us`,
 }
 
 func init() {
+	// Add the 'gen' sub-command into root-command.
 	rootCmd.AddCommand(genCmd)
 
 	// Here you will define your flags and configuration settings.

archived/licenses[WIP]/tools/gen-license-go/cmd/root.go

@@ -17,27 +17,16 @@
 package cmd
 
 import (
-	"fmt"
 	"os"
+	"fmt"
+	"path"
+	"strings"
+	"io/ioutil"
 
 	"github.com/spf13/cobra"
 )
 
-var LICENSES = []string{
-    "agpl-3.0",
-    "apache-2.0",
-    "bsd-2-clause",
-    "bsd-3-clause",
-    "epl-2.0",
-    "gpl-2.0",
-    "gpl-3.0",
-    "lgpl-2.1",
-    "lgpl-3.0",
-    "mit",
-    "mpl-2.0",
-    "unlicenses",
-    "anti996icu-1.0",
-}
+var LICENSES []string
 
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
@@ -64,8 +53,17 @@ func Execute() {
 }
 
 func init() {
-	rootCmd.Flags().BoolP("list", "l", true, "list all licenses")
-	rootCmd.MarkFlagRequired("list")
+	// Read all filenames from licenses directory.
+	files, err := ioutil.ReadDir("./licenses")
+	handleError(err)
+	for _, file := range files {
+			if file.IsDir() {
+					continue
+			} else {
+					LICENSES = append(LICENSES, strings.TrimSuffix(file.Name(), path.Ext(file.Name())))
+			}
+	}
+
 	// Here you will define your flags and configuration settings.
 	// Cobra supports persistent flags, which, if defined here,
 	// will be global for your application.
@@ -74,4 +72,6 @@ func init() {
 	// Cobra also supports local flags, which will only run
 	// when this action is called directly.
 	// rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	rootCmd.Flags().BoolP("list", "l", true, "list all licenses")
+	rootCmd.MarkFlagRequired("list")
 }