func extractCopyrightNotices(path string, raw []byte, verbose bool, showNotice bool, copyrightTagger *tagger.Tagger) ([]byte, error) {
if showNotice {
log.Printf("[LIC %s]: found copyright outside of comments\n", path)
}
cindex := copyrightTagger.FindAllIndex(raw)
if cindex == nil {
return nil, fmt.Errorf("%s: matched a copyright but couldn't find it", path)
}
var ltext []byte
for i := 0; i < len(cindex); i++ {
start := cindex[i][0]
end := cindex[i][1]
if showNotice {
log.Printf("[COPYRIGHT %s] %s\n", path, string(raw[start:end]))
}
ltext = append(ltext, raw[start:end]...)
ltext = append(ltext, '\n')
}
return ltext, nil
}
//
// Strategy / Heuristics:
//
// 1. If this is an unsupported filetype, return a notice to that effect, including identifying the type of file
//
// 2. Look for a copyright notice, if none was found, return a canonical "unknown copyright" notice.
//
// 3. If a copyright notice was found, but no comments were found, just include the copyright notice.
//
// 4. If a copyright notice was found, create the notice text by including all of the
// text from all comment blocks which have copyright notices.
//
// 5. As a last resort, if a copyright notice was found, and comments were found, but the copyright
// notice wasn't found in a comment, just include the copyright notice.
//
func NewNoticeFromFile(path string, verbose bool, showNotice bool, copyrightTagger *tagger.Tagger) (*Notice, error) {
if verbose {
log.Printf("[LIC] Process %s\n", path)
}
m, ltype, err := skipFile(path)
if err != nil {
if m == nil {
return nil, err
}
return mkNotice(path, ltype, append([]byte("Unsupported Filetype: "), m.Magic...), showNotice)
}
raw, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
// Check to see if any copyright notice exists in this file within or not inside of comments
if !copyrightTagger.Match(raw) {
if showNotice {
log.Printf("[LIC %s] %s\n", path, noNotice)
}
return mkNotice(path, ltype, nil, showNotice)
}
cindex := rcomment.FindAllIndex(raw, -1)
var ltext []byte
if cindex == nil {
ltext, err = extractCopyrightNotices(path, raw, verbose, showNotice, copyrightTagger)
if err != nil {
return nil, err
}
return mkNotice(path, ltype, ltext, showNotice)
}
for i := 0; i < len(cindex); i++ {
start := cindex[i][0]
end := cindex[i][1]
// If the comment does contain something I want I take it if not I skip and go back to the top
if !copyrightTagger.Match(raw[start:end]) {
continue
}
if showNotice {
log.Printf("[LICENSE %s] %s\n", path, string(raw[start:end]))
}
ltext = append(ltext, raw[start:end]...)
ltext = append(ltext, '\n')
}
if ltext == nil {
ltext, err = extractCopyrightNotices(path, raw, verbose, showNotice, copyrightTagger)
if err != nil {
return nil, err
}
return mkNotice(path, ltype, ltext, showNotice)
}
return mkNotice(path, ltype, ltext, showNotice)
}