/*
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) 2000 The Apache Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without modifica-
tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The end-user documentation included with the redistribution, if any, must
include the following acknowledgment: "This product includes software
developed by the Apache Software Foundation (http://www.apache.org/)."
Alternately, this acknowledgment may appear in the software itself, if
and wherever such third-party acknowledgments normally appear.
4. The names "Cocoon" and "Apache Software Foundation" must not be used to
endorse or promote products derived from this software without prior
written permission. For written permission, please contact
apache@apache.org.
5. Products derived from this software may not be called "Apache", nor may
"Apache" appear in their name, without prior written permission of the
Apache Software Foundation.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
This software consists of voluntary contributions made by many individuals
on behalf of the Apache Software Foundation and was originally created by
Stefano Mazzocchi <stefano@apache.org>. For more information on the Apache
Software Foundation, please see <http://www.apache.org/>.
*/
package org.ozoneDB.xml.util;
import java.io.InputStream;
import java.io.IOException;
import java.io.EOFException;
import java.io.UTFDataFormatException;
import java.io.Serializable;
import java.util.ArrayList;
/**
* @author <a href="mailto:stefano@apache.org">Stefano Mazzocchi</a>, modifications
* for Ozone by <a href="mailto:conny@smb-tec.com">Conny Krappatsch</a>
*/
final class CompiledXMLInputStream extends InputStream implements Serializable {
private final InputStream in;
private final ArrayList list = new ArrayList();
public CompiledXMLInputStream( InputStream input ) throws IOException{
this.in = input;
}
public final int readEvent() throws IOException {
return this.in.read();
}
public final int readAttributes() throws IOException {
InputStream in = this.in;
int ch1 = in.read();
int ch2 = in.read();
return (ch1 << 8) + (ch2 << 0);
}
public final String readString() throws IOException {
int length = this.readLength();
int index = length & 0x00007FFF;
if (length >= 0x00008000) {
return (String)list.get( index );
} else {
String str = new String( this.readChars( index ) );
list.add( str );
// System.out.println( "index: " + list.size() + ", str=" + str);
return str;
}
}
public final char[] readChars() throws IOException {
return readChars( this.readLength() );
}
public final int read() throws IOException {
return this.in.read();
}
private char[] readChars( int len ) throws IOException {
char[] str = new char[len];
byte[] bytearr = new byte[len];
int c;
int char2;
int char3;
int count = 0;
int i = 0;
this.readBytes( bytearr );
while (count < len) {
c = (int)bytearr[count] & 0xff;
switch (c >> 4) {
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
/* 0xxxxxxx*/
count++;
str[i++] = (char)c;
break;
case 12:
case 13:
/* 110x xxxx 10xx xxxx*/
count += 2;
char2 = (int)bytearr[count - 1];
str[i++] = (char)((c & 0x1F) << 6 | char2 & 0x3F);
break;
case 14:
/* 1110 xxxx 10xx xxxx 10xx xxxx */
count += 3;
char2 = (int)bytearr[count - 2];
char3 = (int)bytearr[count - 1];
str[i++] = (char)((c & 0x0F) << 12 | (char2 & 0x3F) << 6 | (char3 & 0x3F) << 0);
break;
default:
/* 10xx xxxx, 1111 xxxx */
throw new UTFDataFormatException();
}
}
if (i < len) {
char[] newstr = new char[i];
System.arraycopy(str, 0, newstr, 0, i );
return newstr;
}
return str;
}
private void readBytes( byte[] b ) throws IOException {
InputStream in = this.in;
int n = 0;
int len = b.length;
while (n < len) {
int count = in.read( b, n, len - n );
if (count < 0) {
throw new EOFException();
}
n += count;
}
}
private int readLength() throws IOException {
InputStream in = this.in;
int ch1 = in.read();
int ch2 = in.read();
return (ch1 << 8) + (ch2 << 0);
}
}