/**
* Unescapes the escaped entities in the <code>String</code> passed and writes the result to the
* <code>Writer</code> passed.
*
* @param writer The <code>Writer</code> to write the results to; assumed to be non-null.
* @param str The source <code>String</code> to unescape; assumed to be non-null.
* @throws IOException when <code>Writer</code> passed throws the exception from calls to the
* {@link Writer#write(int)} methods.
* @see #escape(String)
* @see Writer
*/
public void unescape(Writer writer, String str) throws IOException {
int firstAmp = str.indexOf('&');
if (firstAmp < 0) {
writer.write(str);
return;
} else {
doUnescape(writer, str, firstAmp);
}
}
