cmd/spdxconv: implement "init" command

The init command create the spdxconv configuration file in the current
directory.

1 files changed, 13 insertions, 5 deletions

diff --git a/spdxconv.go b/spdxconv.go
index 3aaabf3..25ebec0 100644
--- a/spdxconv.go
+++ b/spdxconv.go
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-only
-// SPDX-FileCopyrightText: 2025 M. Shulhan <ms@kilabit.info>
+// SPDX-FileCopyrightText: 2026 M. Shulhan <ms@kilabit.info>
 
 package spdxconv
 
@@ -14,6 +14,9 @@ import (
 	"git.sr.ht/~shulhan/pakakeh.go/lib/ini"
 )
 
+// ConfigFile the file name for configuration file.
+const ConfigFile = `spdxconv.cfg`
+
 // SPDXConv the main type for converting files to SPDX format.
 type SPDXConv struct {
 	scm sourceCodeManagement
@@ -64,6 +67,12 @@ func Apply(path string) (err error) {
 	return nil
 }
 
+// Init create the configuration file [ConfigFile] in the current directory.
+func Init() (err error) {
+	err = os.WriteFile(ConfigFile, []byte(configTemplate), 0600)
+	return err
+}
+
 // New initialize new instance of SPDXConv.
 func New(path string) (conv *SPDXConv, err error) {
 	var logp = `New`
@@ -108,11 +117,10 @@ func New(path string) (conv *SPDXConv, err error) {
 	return conv, nil
 }
 
-// loadConfig load the program configuration from file `spdxconv.cfg` in the
-// current directory.
+// loadConfig load the program [ConfigFile] from the current directory.
 func (conv *SPDXConv) loadConfig(dir string) (err error) {
 	var logp = `loadConfig`
-	var pathcfg = filepath.Join(dir, `spdxconv.cfg`)
+	var pathcfg = filepath.Join(dir, ConfigFile)
 	var rawcfg []byte
 	rawcfg, err = os.ReadFile(pathcfg)
 	if err != nil {
@@ -182,7 +190,7 @@ func (conv *SPDXConv) scanFiles(listDir []string) (listFile []string, err error)
 	var commonIgnore = map[string]struct{}{
 		`.git`:         struct{}{},
 		`node_modules`: struct{}{},
-		`spdxconv.cfg`: struct{}{},
+		ConfigFile:     struct{}{},
 		`vendor`:       struct{}{},
 	}
 	var suffixLicense = `.license`