license-check: also consider license-paths from the config

pkg/license/license.go

@@ -223,7 +223,8 @@ func IsLicenseFile(filename string, overrideIgnore bool) (bool, float64) {
 }
 
 // CollectLicenseInfo collects license information from the given filesystem.
-func CollectLicenseInfo(ctx context.Context, fsys fs.FS) ([]License, error) {
+// If cfg is not nil, it will also include license paths specified in the configuration.
+func CollectLicenseInfo(ctx context.Context, fsys fs.FS, cfg *config.Configuration) ([]License, error) {
 	log := clog.FromContext(ctx)
 
 	// Find all license-text files
@@ -232,6 +233,29 @@ func CollectLicenseInfo(ctx context.Context, fsys fs.FS) ([]License, error) {
 		return nil, fmt.Errorf("finding license files: %w", err)
 	}
 
+	// If configuration is provided, add any license-paths from the config
+	if cfg != nil {
+		// Build a set of existing paths to avoid duplicates
+		existingPaths := make(map[string]struct{})
+		for _, lf := range licenseFiles {
+			existingPaths[lf.Path] = struct{}{}
+		}
+
+		// Add license paths from the configuration
+		for _, cp := range cfg.Package.Copyright {
+			if cp.LicensePath != "" {
+				if _, exists := existingPaths[cp.LicensePath]; !exists {
+					licenseFiles = append(licenseFiles, LicenseFile{
+						Name:   filepath.Base(cp.LicensePath),
+						Path:   cp.LicensePath,
+						Weight: 1.0, // Neutral weight
+					})
+					existingPaths[cp.LicensePath] = struct{}{}
+				}
+			}
+		}
+	}
+
 	if len(licenseFiles) == 0 {
 		// No license files detected, no linting performed.
 		log.Debugf("no license files detected")
@@ -270,7 +294,7 @@ func LicenseCheck(ctx context.Context, cfg *config.Configuration, fsys fs.FS) ([
 	log := clog.FromContext(ctx)
 	log.Infof("checking license information")
 
-	detectedLicenses, err := CollectLicenseInfo(ctx, fsys)
+	detectedLicenses, err := CollectLicenseInfo(ctx, fsys, cfg)
 	if err != nil {
 		return nil, nil, fmt.Errorf("collecting license info: %w", err)
 	}

pkg/license/license_test.go

@@ -212,6 +212,7 @@ func TestLicenseCheck(t *testing.T) {
 			Copyright: []config.Copyright{
 				{License: "Apache-2.0", LicensePath: "LICENSE-APACHE"},
 				{License: "MIT", LicensePath: "LICENSE-BSD"},
+				{License: "Apache-2.0", LicensePath: "ATYPICAL-FILENAME"},
 				{License: "GPL-2.0 OR GPL-3.0"},
 			},
 		},