bundles/org.apache.jasper.glassfish/src/org/apache/jasper/xmlparser/ASCIIReader.java
public int read() throws IOException {
        int b0 = fInputStream.read();
        if (b0 > 0x80) {
            throw new IOException(Localizer.getMessage("jsp.error.xml.invalidASCII",
						       Integer.toString(b0)));
        }
        return b0;
    }
public int read() throws IOException {
        int b0 = fInputStream.read();
        if (b0 > 0x80) {
            throw new IOException(Localizer.getMessage("jsp.error.xml.invalidASCII",
						       Integer.toString(b0)));
        }
        return b0;
    }
Read a single character.  This method will block until a character is
available, an I/O error occurs, or the end of the stream is reached.

<p> Subclasses that intend to support efficient single-character input
should override this method.

@return     The character read, as an integer in the range 0 to 127
(<tt>0x00-0x7f</tt>), or -1 if the end of the stream has
been reached

@exception  IOException  If an I/O error occurs