// glob searches for files matching pattern in the directory dir
// and appends them to matches. If the directory cannot be
// opened, it returns the existing matches. New matches are
// added in lexicographical order.
func glob(fs vfs.FileSystem, dir, pattern string, matches []string) (m []string, e error) {
m = matches
fi, err := fs.Stat(dir)
if err != nil {
return
}
if !fi.IsDir() {
return
}
fis, err := fs.ReadDir(dir)
if err != nil {
return
}
sort.Sort(byName(fis))
for _, fi := range fis {
n := fi.Name()
matched, err := path.Match(path.Clean(pattern), n)
if err != nil {
return m, err
}
if matched {
m = append(m, path.Join(dir, n))
}
}
return
}
func readJSONFileFS(fs vfs.FileSystem, file string, v interface{}) (err error) {
fi, err := fs.Stat(file)
if err != nil {
return err
}
if fi.Size() < 1 {
return errEmptyJSONFile
}
f, err := fs.Open(file)
if err != nil {
return err
}
defer func() {
err2 := f.Close()
if err == nil {
err = err2
}
}()
return json.NewDecoder(f).Decode(v)
}