spdxconv: tool to convert license and copyright to SPDX format

This is the initial implementation, work in progress, with the following
functions,

* loading the spdxconv.cfg file
* scanning list of files to be converted
* detect .git repository and exclude files ignored by .gitignore

No conversion logic is implemented yet.

1 files changed, 29 insertions, 0 deletions

diff --git a/config.go b/config.go
new file mode 100644
index 0000000..962b0ad
--- /dev/null
+++ b/config.go
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2025 M. Shulhan <ms@kilabit.info>
+
+package spdxconv
+
+import "errors"
+
+type config struct {
+	LicenseIdentifier string `ini:"default::license_identifier"`
+	FileCopyrightText string `ini:"default::file_copyright_text"`
+
+	MatchLicense []configMatchLicense `ini:"match-license"`
+
+	MaxLineMatch int `ini:"default::max_line_match"`
+}
+
+func (cfg *config) init() (err error) {
+	const defMaxLineMatch = 10
+	if cfg.LicenseIdentifier == `` {
+		return errors.New(`empty default license_identifier`)
+	}
+	if cfg.FileCopyrightText == `` {
+		return errors.New(`empty default file_copyright_text`)
+	}
+	if cfg.MaxLineMatch <= 0 {
+		cfg.MaxLineMatch = defMaxLineMatch
+	}
+	return nil
+}