+func normalizePath(s string) string {
+ // (url.URL).EscapedPath() would be incorrect here. AWS
+ // documentation specifies the URL path should be normalized
+ // according to RFC 3986, i.e., unescaping ALPHA / DIGIT / "-"
+ // / "." / "_" / "~". The implication is that everything other
+ // than those chars (and "/") _must_ be percent-encoded --
+ // even chars like ";" and "," that are not normally
+ // percent-encoded in paths.
+ out := ""
+ for _, c := range []byte(reMultipleSlashChars.ReplaceAllString(s, "/")) {
+ if (c >= 'a' && c <= 'z') ||
+ (c >= 'A' && c <= 'Z') ||
+ (c >= '0' && c <= '9') ||
+ c == '-' ||
+ c == '.' ||
+ c == '_' ||
+ c == '~' ||
+ c == '/' {
+ out += string(c)
+ } else {
+ out += fmt.Sprintf("%%%02X", c)
+ }
+ }
+ return out
+}
+