Re: Detect XML document encodings with SAX

I would consider it tempting to rewrite that app to use a standard
XML parser.

It would solve this problem and possibly also some future problems.

What about just reading the first few lines until you have the
XML declaration.

Parsing the encoding out of that should be simple.

private static final Pattern encpat =
Pattern.compile("encoding\\s*=\\s*['\"]([^'\"]+)['\"]");
private static String detectSimple(String fnm) throws IOException {
BufferedReader br = new BufferedReader(new FileReader(fnm));
String firstpart = "";
while(!firstpart.contains(">")) firstpart += br.readLine();
br.close();
Matcher m = encpat.matcher(firstpart);
if(m.find()) {
return m.group(1);
} else {
return "Unknown";
}
}

I do not like the solution, but given the restrictions in the
context, then maybe it is what you need.