1 files changed, 82 insertions, 0 deletions
diff --git a/tools/license_serializer/license_serializer.go b/tools/license_serializer/license_serializer.go
new file mode 100644
index 0000000..e68bd64
--- /dev/null
+++ b/tools/license_serializer/license_serializer.go
@@ -0,0 +1,82 @@
+// Copyright 2017 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The license_serializer program normalizes and serializes the known
+// licenseclassifier licenses into a compressed archive. The hash values for
+// the licenses are calculated and added to the archive. These can then be used
+// to determine where in unknown text is a good offset to run through the
+// Levenshtein Distance algorithm.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/google/licenseclassifier"
+	"github.com/google/licenseclassifier/serializer"
+)
+
+var (
+	forbiddenOnly = flag.Bool("forbidden", false, "serialize only forbidden licenses")
+	outputDir     = flag.String("output", "", "output directory")
+)
+
+func init() {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, `Usage: %s [OPTIONS]
+
+Calculate the hash values for files and serialize them into a database.
+See go/license-classifier
+
+Options:
+`, filepath.Base(os.Args[0]))
+		flag.PrintDefaults()
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	archiveName := licenseclassifier.LicenseArchive
+	if *forbiddenOnly {
+		archiveName = licenseclassifier.ForbiddenLicenseArchive
+	}
+
+	fn := filepath.Join(*outputDir, archiveName)
+	out, err := os.Create(fn)
+	if err != nil {
+		log.Fatalf("error: cannot create file %q: %v", fn, err)
+	}
+	defer out.Close()
+
+	lics, err := licenseclassifier.ReadLicenseDir()
+	if err != nil {
+		log.Fatalf("error: cannot read licenses directory: %v", err)
+	}
+
+	var licenses []string
+	for _, lic := range lics {
+		if !*forbiddenOnly || licenseclassifier.LicenseType(strings.TrimSuffix(lic.Name(), ".txt")) == "FORBIDDEN" {
+			licenses = append(licenses, lic.Name())
+		}
+	}
+
+	if err := serializer.ArchiveLicenses(licenses, out); err != nil {
+		log.Fatalf("error: cannot create database: %v", err)
+	}
+}