| // Copyright 2021 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package checklicenses |
| |
| import ( |
| "bufio" |
| "bytes" |
| "os" |
| ) |
| |
| // Chromium license files have the format: |
| // |
| // <chromium BSD-3 license> |
| // -------------------- |
| // library name |
| // -------------------- |
| // license text |
| // |
| // -------------------- |
| // library name |
| // -------------------- |
| // license text |
| // |
| // etc |
| |
| func processChromiumLicenses(licenses *Licenses, config *Config, metrics *Metrics, file_tree *FileTree) error { |
| for _, path := range config.ChromiumLicenses { |
| data, err := parseChromiumLicenseFile(path) |
| if err != nil { |
| return err |
| } |
| for _, d := range data { |
| licenses.MatchSingleLicenseFile(d, path, metrics, file_tree) |
| } |
| } |
| |
| return nil |
| } |
| |
| const ( |
| ParserStateLibraryName = iota |
| ParserStateLicense = iota |
| ) |
| |
| func parseChromiumLicenseFile(path string) ([][]byte, error) { |
| var licenseDelimiter = []byte("--------------------") |
| |
| f, err := os.Open(path) |
| if err != nil { |
| return nil, err |
| } |
| defer f.Close() |
| |
| // The first license in the file is the Chromium license, which should get the same treatment as |
| // all of the third party licenses. The only difference is that it doesn't have a library name |
| // associated with it, but we ignore those anyway. |
| parserState := ParserStateLicense |
| licenses := [][]byte{} |
| license := []byte{} |
| |
| scanner := bufio.NewScanner(f) |
| for scanner.Scan() { |
| line := scanner.Bytes() |
| switch parserState { |
| case ParserStateLibraryName: |
| if bytes.Equal(line, licenseDelimiter) { |
| parserState = ParserStateLicense |
| } |
| |
| case ParserStateLicense: |
| if bytes.Equal(line, licenseDelimiter) { |
| licenses = append(licenses, license) |
| license = []byte{} |
| parserState = ParserStateLibraryName |
| } else { |
| license = append(license, line...) |
| license = append(license, byte('\n')) |
| } |
| } |
| } |
| |
| return licenses, nil |
| } |