Function NewDefaultFS

echo.go:873–878

NewDefaultFS returns a new defaultFS instance which allows `fs.FS.Open` to have absolute paths as input if it matches then given dir as prefix.

(dir string)

// NewDefaultFS returns a new defaultFS instance which allows `fs.FS.Open` to have absolute paths as input if it matches
// then given dir as prefix.
func NewDefaultFS(dir string) fs.FS {
	return &defaultFS{
		prefix: dir,
		fs:     os.DirFS(dir),
	}
}

func (fs defaultFS) Open(name string) (fs.File, error) {
	// fs.FS.Open() already assumes that file names are relative to FS root path and considers name with prefix `/` as invalid