93 lines
2.7 KiB
Go
93 lines
2.7 KiB
Go
// 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 identify_license program tries to identify the license type of an
|
|
// unknown license. The file containing the license text is specified on the
|
|
// command line. Multiple license files can be analyzed with a single command.
|
|
// The type of the license is returned along with the confidence level of the
|
|
// match. The confidence level is between 0.0 and 1.0, with 1.0 indicating an
|
|
// exact match and 0.0 indicating a complete mismatch. The results are sorted
|
|
// by confidence level.
|
|
//
|
|
// $ identifylicense LICENSE1 LICENSE2
|
|
// LICENSE2: MIT (confidence: 0.987)
|
|
// LICENSE1: BSD-2-Clause (confidence: 0.833)
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"path/filepath"
|
|
"sort"
|
|
"time"
|
|
|
|
"github.com/google/licenseclassifier"
|
|
"github.com/google/licenseclassifier/tools/identify_license/backend"
|
|
)
|
|
|
|
var (
|
|
headers = flag.Bool("headers", false, "match license headers")
|
|
forbiddenOnly = flag.Bool("forbidden", false, "identify using forbidden licenses archive")
|
|
threshold = flag.Float64("threshold", licenseclassifier.DefaultConfidenceThreshold, "confidence threshold")
|
|
timeout = flag.Duration("timeout", 24*time.Hour, "timeout before giving up on classifying a file.")
|
|
)
|
|
|
|
func init() {
|
|
flag.Usage = func() {
|
|
fmt.Fprintf(os.Stderr, `Usage: %s <licensefile> ...
|
|
|
|
Identify an unknown license.
|
|
|
|
Options:
|
|
`, filepath.Base(os.Args[0]))
|
|
flag.PrintDefaults()
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
be, err := backend.New(*threshold, *forbiddenOnly)
|
|
if err != nil {
|
|
be.Close()
|
|
log.Fatalf("cannot create license classifier: %v", err)
|
|
}
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), *timeout)
|
|
defer cancel()
|
|
if errs := be.ClassifyLicensesWithContext(ctx, flag.Args(), *headers); errs != nil {
|
|
be.Close()
|
|
for _, err := range errs {
|
|
log.Printf("classify license failed: %v", err)
|
|
}
|
|
log.Fatal("cannot classify licenses")
|
|
}
|
|
|
|
results := be.GetResults()
|
|
if len(results) == 0 {
|
|
be.Close()
|
|
log.Fatal("Couldn't classify license(s)")
|
|
}
|
|
|
|
sort.Sort(results)
|
|
for _, r := range results {
|
|
fmt.Printf("%s: %s (confidence: %v, offset: %v, extent: %v)\n",
|
|
r.Filename, r.Name, r.Confidence, r.Offset, r.Extent)
|
|
}
|
|
be.Close()
|
|
}
|