normalizeCharset static method

String? normalizeCharset(
  1. String? charset
)

Implementation

static String? normalizeCharset(String? charset) {
  if (charset == null || charset.isEmpty) return null;
  charset = charset.toLowerCase();
  charset = charset.replaceFirst('charset=', '');
  charset = charset.trim();
  if (charset.isEmpty) return null;
  return charset;
}