private int
skipWhitespace() throws IOException {
	int skipped = 0;
	while (true) {
		int c = getChar();
		if (c != ' ' && c != '\t') {
	                if (!(c == '\n' && multiline > 0)) {
				ungetChar(c);
				return skipped;
			}
		}
		skipped++;
	}
}
Creates a Tokenizer from a file.
@param f The File to tokenize.
src/main/java/core/org/xbill/DNS/Tokenizer.java