| // Copyright 2022 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 notice |
| |
| import ( |
| "bufio" |
| "bytes" |
| "strings" |
| ) |
| |
| // Flutter license files have the format: |
| // ... |
| // sectionDelimiter |
| // ... |
| // licenseDelimiter |
| // license |
| // appendixDelimiter? |
| // appendix? |
| // sectionDelimiter |
| // |
| // sectionDelimiter |
| // ... |
| // licenseDelimiter |
| // license |
| // appendixDelimiter? |
| // appendix? |
| // sectionDelimiter |
| // etc. |
| |
| var ( |
| sectionDelimiter = []byte("====================================================================================================") |
| licenseDelimiter = []byte("----------------------------------------------------------------------------------------------------") |
| appendixDelimiter = []byte("END OF TERMS AND CONDITIONS") |
| ) |
| |
| func ParseFlutter(path string, content []byte) ([]*Data, error) { |
| r := bytes.NewReader(content) |
| |
| scanner := bufio.NewScanner(r) |
| var ( |
| inAppendix bool |
| inLicense bool |
| inSection bool |
| |
| builder strings.Builder |
| licenses []*Data |
| ) |
| |
| license := &Data{} |
| |
| lineNumber := 0 |
| for scanner.Scan() { |
| lineNumber = lineNumber + 1 |
| line := scanner.Bytes() |
| if inSection { |
| if inLicense { |
| if bytes.Equal(line, appendixDelimiter) { |
| inAppendix = true |
| } else if bytes.Equal(line, sectionDelimiter) { |
| inAppendix = false |
| inLicense = false |
| inSection = false |
| license.LicenseText = []byte(builder.String()) |
| licenses = append(licenses, license) |
| license = &Data{LineNumber: lineNumber} |
| builder.Reset() |
| } else if !inAppendix { |
| builder.Write(line) |
| builder.WriteString("\n") |
| } |
| } else if bytes.Equal(line, licenseDelimiter) { |
| inLicense = true |
| } else if bytes.HasPrefix(line, []byte("LIBRARY")) { |
| license.LibraryName = string(bytes.ReplaceAll(line, []byte("LIBRARY: "), []byte(""))) |
| } |
| } else if bytes.Equal(line, sectionDelimiter) { |
| inSection = true |
| } |
| } |
| if err := scanner.Err(); err != nil { |
| return nil, err |
| } |
| |
| return licenses, nil |
| } |