/** @return null if fails to convert. */
public static QName _parseQName(CharSequence text, NamespaceContext nsc) {
int length = text.length();
// trim whitespace
int start = 0;
while (start < length && WhiteSpaceProcessor.isWhiteSpace(text.charAt(start))) start++;
int end = length;
while (end > start && WhiteSpaceProcessor.isWhiteSpace(text.charAt(end - 1))) end--;
if (end == start) throw new IllegalArgumentException("input is empty");
String uri;
String localPart;
String prefix;
// search ':'
int idx = start + 1; // no point in searching the first char. that's not valid.
while (idx < end && text.charAt(idx) != ':') idx++;
if (idx == end) {
uri = nsc.getNamespaceURI("");
localPart = text.subSequence(start, end).toString();
prefix = "";
} else {
// Prefix exists, check everything
prefix = text.subSequence(start, idx).toString();
localPart = text.subSequence(idx + 1, end).toString();
uri = nsc.getNamespaceURI(prefix);
// uri can never be null according to javadoc,
// but some users reported that there are implementations that return null.
if (uri == null || uri.length() == 0) // crap. the NamespaceContext interface is broken.
// error: unbound prefix
throw new IllegalArgumentException("prefix " + prefix + " is not bound to a namespace");
}
return new QName(uri, localPart, prefix);
}
public static boolean _parseBoolean(CharSequence literal) {
int i = 0;
int len = literal.length();
char ch;
do {
ch = literal.charAt(i++);
} while (WhiteSpaceProcessor.isWhiteSpace(ch) && i < len);
// if we are strict about errors, check i==len. and report an error
if (ch == 't' || ch == '1') return true;
if (ch == 'f' || ch == '0') return false;
return false;
}
/**
* Faster but less robust String->int conversion.
*
* <p>Note that:
*
* <ol>
* <li>XML Schema allows '+', but {@link Integer#valueOf(String)} is not.
* <li>XML Schema allows leading and trailing (but not in-between) whitespaces.. {@link
* Integer#valueOf(String)} doesn't allow any.
* </ol>
*/
public static int _parseInt(CharSequence s) {
int len = s.length();
int sign = 1;
int r = 0;
for (int i = 0; i < len; i++) {
char ch = s.charAt(i);
if (WhiteSpaceProcessor.isWhiteSpace(ch)) {
// skip whitespace
} else if ('0' <= ch && ch <= '9') {
r = r * 10 + (ch - '0');
} else if (ch == '-') {
sign = -1;
} else if (ch == '+') {
// noop
} else throw new NumberFormatException("Not a number: " + s);
}
return r * sign;
}