91 lines
1.6 KiB
Go
91 lines
1.6 KiB
Go
// SPDX-License-Identifier: Unlicense
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package main
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import (
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"bufio"
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"errors"
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"fmt"
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"io/fs"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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)
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var goSpdxHeader = `// SPDX-License-Identifier: Unlicense`
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var tmplSpdxHeader = `{{/* SPDX-License-Identifier: Unlicense */`
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type MissingSPDXError struct {
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Name string
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}
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func (m MissingSPDXError) Error() string {
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return fmt.Sprintf("missing or incorrect SPDX header: %s", m.Name)
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}
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func checkFileSPDX(header string, name string) error {
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f, err := os.Open(name)
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if err != nil {
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return err
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}
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defer f.Close()
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r := bufio.NewReader(f)
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pattern := `(?m:^` + regexp.QuoteMeta(header) + `)`
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matched, err := regexp.MatchReader(pattern, r)
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if err != nil {
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return err
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}
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if !matched {
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return MissingSPDXError{Name: name}
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}
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return nil
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}
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func walkSPDX(header string, extension string) error {
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var errs []error
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filepath.WalkDir(".", func(path string, d fs.DirEntry, err error) error {
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if path != "." && strings.HasPrefix(path, ".") {
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if d.IsDir() {
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return filepath.SkipDir
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}
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return nil
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}
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if err != nil {
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errs = append(errs, err)
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return nil
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}
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if filepath.Ext(path) != extension {
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return nil
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}
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errs = append(errs, checkFileSPDX(header, path))
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return nil
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})
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return errors.Join(errs...)
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}
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func checkSPDX() error {
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err := errors.Join(
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walkSPDX(goSpdxHeader, ".go"),
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walkSPDX(tmplSpdxHeader, ".tmpl"),
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)
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if err != nil {
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return fmt.Errorf("Check SPDX Headers:\n%w", err)
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}
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return nil
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}
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func run() error {
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return checkSPDX()
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}
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func main() {
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err := run()
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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