Normalize license for cargo. (#153)

pkg/deps/cargo.go

@@ -23,6 +23,8 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"sort"
+	"strings"
 
 	"github.com/apache/skywalking-eyes/internal/logger"
 	"github.com/apache/skywalking-eyes/pkg/license"
@@ -75,6 +77,10 @@ func (resolver *CargoTomlResolver) Resolve(cargoTomlFile string, config *ConfigD
 		return err
 	}
 
+	for i := range metadata.Packages {
+		metadata.Packages[i].License = normalizeLicense(metadata.Packages[i].License)
+	}
+
 	logger.Log.Debugln("Package size:", len(metadata.Packages))
 
 	return resolver.ResolvePackages(metadata.Packages, config, report)
@@ -156,3 +162,18 @@ func (resolver *CargoTomlResolver) ResolvePackageLicense(config *ConfigDeps, pkg
 
 	return nil
 }
+
+func normalizeLicense(licenseStr string) string {
+	segs := make(map[string]struct{})
+	for _, ss := range strings.Split(licenseStr, "/") {
+		for _, s := range strings.Split(ss, " OR ") {
+			segs[s] = struct{}{}
+		}
+	}
+	var items []string
+	for seg := range segs {
+		items = append(items, seg)
+	}
+	sort.Strings(items)
+	return strings.Join(items, " OR ")
+}

pkg/deps/cargo_test.go

@@ -18,12 +18,13 @@
 package deps_test
 
 import (
-	"github.com/apache/skywalking-eyes/internal/logger"
-	"github.com/apache/skywalking-eyes/pkg/deps"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"testing"
+
+	"github.com/apache/skywalking-eyes/internal/logger"
+	"github.com/apache/skywalking-eyes/pkg/deps"
 )
 
 func TestCanResolveCargo(t *testing.T) {
@@ -134,7 +135,8 @@ edition = "2021"
 license = "Apache-2.0"
 
 [dependencies]
-libc = "0.2.126"
+libc = "0.2.126"    # actual license: MIT OR Apache-2.0
+bitflags = "1.3.2"  # actual license: MIT/Apache-2.0
 `
 
 		config := deps.ConfigDeps{
@@ -145,12 +147,17 @@ libc = "0.2.126"
 		}
 
 		report := resolveTmpCargo(t, cargoToml, &config)
-		if len(report.Resolved) != 2 {
-			t.Error("len(report.Resolved) != 2")
+		if len(report.Resolved) != 3 {
+			t.Error("len(report.Resolved) != 3")
 		}
 		for _, result := range report.Resolved {
 			if result.Dependency == "libc" {
-				if result.LicenseSpdxID != "MIT OR Apache-2.0" || result.LicenseContent == "" {
+				if result.LicenseSpdxID != "Apache-2.0 OR MIT" || result.LicenseContent == "" {
+					t.Error("Resolve dependency libc failed")
+				}
+			}
+			if result.Dependency == "bitflags" {
+				if result.LicenseSpdxID != "Apache-2.0 OR MIT" || result.LicenseContent == "" {
 					t.Error("Resolve dependency libc failed")
 				}
 			}