100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
// Copyright 2019 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"encoding/csv"
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"os"
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"strings"
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"github.com/golang/glog"
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"github.com/google/go-licenses/licenses"
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"github.com/spf13/cobra"
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)
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var (
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csvCmd = &cobra.Command{
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Use: "csv <package>",
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Short: "Prints all licenses that apply to a Go package and its dependencies",
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Args: cobra.MinimumNArgs(1),
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RunE: csvMain,
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}
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gitRemotes []string
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)
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func init() {
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csvCmd.Flags().StringArrayVar(&gitRemotes, "git_remote", []string{"origin", "upstream"}, "Remote Git repositories to try")
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rootCmd.AddCommand(csvCmd)
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}
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func csvMain(_ *cobra.Command, args []string) error {
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writer := csv.NewWriter(os.Stdout)
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classifier, err := licenses.NewClassifier(confidenceThreshold)
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if err != nil {
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return err
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}
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libs, err := licenses.Libraries(context.Background(), classifier, args...)
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if err != nil {
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return err
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}
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for _, lib := range libs {
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licenseURL := "Unknown"
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licenseName := "Unknown"
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if lib.LicensePath != "" {
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// Find a URL for the license file, based on the URL of a remote for the Git repository.
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var errs []string
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repo, err := licenses.FindGitRepo(lib.LicensePath)
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if err != nil {
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// Can't find Git repo (possibly a Go Module?) - derive URL from lib name instead.
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lURL, err := lib.FileURL(lib.LicensePath)
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if err != nil {
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errs = append(errs, err.Error())
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} else {
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licenseURL = lURL.String()
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}
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} else {
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for _, remote := range gitRemotes {
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url, err := repo.FileURL(lib.LicensePath, remote)
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if err != nil {
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errs = append(errs, err.Error())
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continue
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}
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licenseURL = url.String()
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break
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}
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}
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if licenseURL == "Unknown" {
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glog.Errorf("Error discovering URL for %q:\n- %s", lib.LicensePath, strings.Join(errs, "\n- "))
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}
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licenseName, _, err = classifier.Identify(lib.LicensePath)
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if err != nil {
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glog.Errorf("Error identifying license in %q: %v", lib.LicensePath, err)
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licenseName = "Unknown"
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}
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}
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// Remove the "*/vendor/" prefix from the library name for conciseness.
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if err := writer.Write([]string{unvendor(lib.Name()), licenseURL, licenseName}); err != nil {
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return err
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}
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}
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writer.Flush()
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return writer.Error()
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}
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