/**
* This directly invokes super's <code>output</code> after converting <code>string</code> to a
* char[].
*/
private void output(String string) throws IOException {
int length = string.length();
if (tempChars == null || tempChars.length < length) {
tempChars = new char[length];
}
string.getChars(0, length, tempChars, 0);
super.output(tempChars, 0, length);
}
/**
* This method is overriden to map any character entities, such as < to &lt;. <code>
* super.output</code> will be invoked to write the content.
*/
protected void output(char[] chars, int start, int length) throws IOException {
if (!replaceEntities) {
super.output(chars, start, length);
return;
}
int last = start;
length += start;
for (int counter = start; counter < length; counter++) {
// This will change, we need better support character level
// entities.
switch (chars[counter]) {
// Character level entities.
case '<':
if (counter > last) {
super.output(chars, last, counter - last);
}
last = counter + 1;
output("<");
break;
case '>':
if (counter > last) {
super.output(chars, last, counter - last);
}
last = counter + 1;
output(">");
break;
case '&':
if (counter > last) {
super.output(chars, last, counter - last);
}
last = counter + 1;
output("&");
break;
case '"':
if (counter > last) {
super.output(chars, last, counter - last);
}
last = counter + 1;
output(""");
break;
// Special characters
case '\n':
case '\t':
case '\r':
break;
default:
if (chars[counter] < ' ' || chars[counter] > 127) {
if (counter > last) {
super.output(chars, last, counter - last);
}
last = counter + 1;
// If the character is outside of ascii, write the
// numeric value.
output("&#");
output(String.valueOf((int) chars[counter]));
output(";");
}
break;
}
}
if (last < length) {
super.output(chars, last, length - last);
}
}
/**
* Writes the line separator. This is overriden to make sure we don't replace the newline content
* in case it is outside normal ascii.
*/
protected void writeLineSeparator() throws IOException {
boolean oldReplace = replaceEntities;
replaceEntities = false;
super.writeLineSeparator();
replaceEntities = oldReplace;
}