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src/share/jaxws_classes/com/sun/tools/internal/ws/wsdl/parser/WhitespaceStripper.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/tools/internal/ws/wsdl/parser/WhitespaceStripper.java

Thu, 31 Aug 2017 15:18:52 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:18:52 +0800

changeset 637

9c07ef4934dd

parent 368

0989ad8c0860

parent 0

373ffda63c9a

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package com.sun.tools.internal.ws.wsdl.parser;
aoqi@0	27
aoqi@0	28	import com.sun.xml.internal.bind.WhiteSpaceProcessor;
aoqi@0	29	import org.xml.sax.*;
aoqi@0	30	import org.xml.sax.helpers.XMLFilterImpl;
aoqi@0	31
aoqi@0	32	/**
aoqi@0	33	* Strips ignorable whitespace from SAX event stream.
aoqi@0	34	*
aoqi@0	35	* <p>
aoqi@0	36	* This filter works only when the event stream doesn't
aoqi@0	37	* contain any mixed content.
aoqi@0	38	*
aoqi@0	39	* @author
aoqi@0	40	* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
aoqi@0	41	* Vivek Pandey
aoqi@0	42	*/
aoqi@0	43	class WhitespaceStripper extends XMLFilterImpl {
aoqi@0	44
aoqi@0	45	private int state = 0;
aoqi@0	46
aoqi@0	47	private char[] buf = new char[1024];
aoqi@0	48	private int bufLen = 0;
aoqi@0	49
aoqi@0	50	private static final int AFTER_START_ELEMENT = 1;
aoqi@0	51	private static final int AFTER_END_ELEMENT = 2;
aoqi@0	52
aoqi@0	53	public WhitespaceStripper(XMLReader reader) {
aoqi@0	54	setParent(reader);
aoqi@0	55	}
aoqi@0	56
aoqi@0	57	public WhitespaceStripper(ContentHandler handler, ErrorHandler eh, EntityResolver er) {
aoqi@0	58	setContentHandler(handler);
aoqi@0	59	if(eh!=null) setErrorHandler(eh);
aoqi@0	60	if(er!=null) setEntityResolver(er);
aoqi@0	61	}
aoqi@0	62
aoqi@0	63	public void characters(char[] ch, int start, int length) throws SAXException {
aoqi@0	64	switch(state) {
aoqi@0	65	case AFTER_START_ELEMENT:
aoqi@0	66	// we have to store the characters here, even if it consists entirely
aoqi@0	67	// of whitespaces. This is because successive characters event might
aoqi@0	68	// include non-whitespace char, in which case all the whitespaces in
aoqi@0	69	// this event may suddenly become significant.
aoqi@0	70	if( bufLen+length>buf.length ) {
aoqi@0	71	// reallocate buffer
aoqi@0	72	char[] newBuf = new char[Math.max(bufLen+length,buf.length*2)];
aoqi@0	73	System.arraycopy(buf,0,newBuf,0,bufLen);
aoqi@0	74	buf = newBuf;
aoqi@0	75	}
aoqi@0	76	System.arraycopy(ch,start,buf,bufLen,length);
aoqi@0	77	bufLen += length;
aoqi@0	78	break;
aoqi@0	79	case AFTER_END_ELEMENT:
aoqi@0	80	// check if this is ignorable.
aoqi@0	81	int len = start+length;
aoqi@0	82	for( int i=start; i<len; i++ )
aoqi@0	83	if( !WhiteSpaceProcessor.isWhiteSpace(ch[i]) ) {
aoqi@0	84	super.characters(ch, start, length);
aoqi@0	85	return;
aoqi@0	86	}
aoqi@0	87	// if it's entirely whitespace, ignore it.
aoqi@0	88	break;
aoqi@0	89	}
aoqi@0	90	}
aoqi@0	91
aoqi@0	92	public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
aoqi@0	93	processPendingText();
aoqi@0	94	super.startElement(uri, localName, qName, atts);
aoqi@0	95	state = AFTER_START_ELEMENT;
aoqi@0	96	bufLen = 0;
aoqi@0	97	}
aoqi@0	98
aoqi@0	99	public void endElement(String uri, String localName, String qName) throws SAXException {
aoqi@0	100	processPendingText();
aoqi@0	101	super.endElement(uri, localName, qName);
aoqi@0	102	state = AFTER_END_ELEMENT;
aoqi@0	103	}
aoqi@0	104
aoqi@0	105	/**
aoqi@0	106	* Forwars the buffered characters if it contains any non-whitespace
aoqi@0	107	* character.
aoqi@0	108	*/
aoqi@0	109	private void processPendingText() throws SAXException {
aoqi@0	110	if(state==AFTER_START_ELEMENT) {
aoqi@0	111	for( int i=bufLen-1; i>=0; i-- )
aoqi@0	112	if( !WhiteSpaceProcessor.isWhiteSpace(buf[i]) ) {
aoqi@0	113	super.characters(buf, 0, bufLen);
aoqi@0	114	return;
aoqi@0	115	}
aoqi@0	116	}
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
aoqi@0	120	// ignore completely.
aoqi@0	121	}
aoqi@0	122	}