| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, 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 "Xalan" 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 (INCLUDING, 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 based on software copyright (c) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author Santiago Pericas-Geertsen |
| * @author G. Todd Miller |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.runtime.output; |
| |
| import java.util.Stack; |
| import java.util.Vector; |
| |
| import java.io.Writer; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.UnsupportedEncodingException; |
| |
| import org.apache.xalan.xsltc.*; |
| import org.apache.xalan.xsltc.runtime.*; |
| import org.apache.xalan.xsltc.runtime.Hashtable; |
| |
| public class StreamXMLOutput extends StreamOutput { |
| |
| private static final String BEGCDATA = "<![CDATA["; |
| private static final String ENDCDATA = "]]>"; |
| private static final String CNTCDATA = "]]]]><![CDATA[>"; |
| private static final String BEGCOMM = "<!--"; |
| private static final String ENDCOMM = "-->"; |
| private static final String CDATA_ESC_START = "]]>&#"; |
| private static final String CDATA_ESC_END = ";<![CDATA["; |
| |
| private String _elementName; |
| |
| public StreamXMLOutput(Writer writer, String encoding) { |
| super(writer, encoding); |
| initCDATA(); |
| initNamespaces(); |
| //System.out.println("StreamXMLOutput.<init>"); |
| } |
| |
| public StreamXMLOutput(OutputStream out, String encoding) |
| throws IOException |
| { |
| super(out, encoding); |
| initCDATA(); |
| initNamespaces(); |
| //System.out.println("StreamXMLOutput.<init>"); |
| } |
| |
| public void startDocument() throws TransletException { |
| //System.out.println("startDocument"); |
| if (!_omitHeader) { |
| final StringBuffer header = new StringBuffer("<?xml version=\""); |
| header.append(_version).append("\" encoding=\"").append(_encoding); |
| if (_standalone != null) { |
| header.append("\" standalone=\"").append(_standalone); |
| } |
| header.append("\"?>\n"); |
| |
| // Always insert header at the beginning |
| _buffer.insert(0, header.toString()); |
| } |
| } |
| |
| public void endDocument() throws TransletException { |
| // System.out.println("endDocument"); |
| // Finally, output buffer to writer |
| outputBuffer(); |
| } |
| |
| public void startElement(String elementName) throws TransletException { |
| // System.out.println("startElement = " + elementName); |
| if (_startTagOpen) { |
| closeStartTag(); |
| } |
| else if (_cdataTagOpen) { |
| closeCDATA(); |
| } |
| |
| // Handle document type declaration (for first element only) |
| if (_firstElement) { |
| if (_doctypeSystem != null) { |
| appendDTD(elementName); |
| } |
| _firstElement = false; |
| } |
| |
| if (_indent) { |
| indent(_lineFeedNextStartTag); |
| _lineFeedNextStartTag = true; |
| _indentNextEndTag = false; |
| _indentLevel++; |
| } |
| |
| _buffer.append('<').append(elementName); |
| |
| _depth++; |
| _startTagOpen = true; |
| _elementName = elementName; |
| } |
| |
| public void endElement(String elementName) throws TransletException { |
| // System.out.println("endElement = " + elementName); |
| if (_cdataTagOpen) { |
| closeCDATA(); |
| } |
| |
| if (_startTagOpen) { |
| appendAttributes(); |
| _buffer.append("/>"); |
| _startTagOpen = false; |
| |
| if (_indent) { |
| _indentLevel--; |
| _indentNextEndTag = true; |
| } |
| } |
| else { |
| if (_indent) { |
| _indentLevel--; |
| |
| if (_indentNextEndTag) { |
| indent(_indentNextEndTag); |
| _indentNextEndTag = true; |
| _lineFeedNextStartTag = true; |
| } |
| } |
| _buffer.append("</").append(elementName).append('>'); |
| _indentNextEndTag = true; |
| } |
| |
| if (((Integer) _cdataStack.peek()).intValue() == _depth) { |
| _cdataStack.pop(); |
| } |
| |
| popNamespaces(); |
| _depth--; |
| } |
| |
| public void characters(String characters) throws TransletException { |
| // System.out.println("characters() string '" + characters + "'"); |
| characters(characters.toCharArray(), 0, characters.length()); |
| } |
| |
| public void characters(char[] characters, int offset, int length) |
| throws TransletException |
| { |
| if (length <= 0) return; |
| |
| if (_startTagOpen) { |
| closeStartTag(); |
| } |
| |
| final Integer I = (Integer) _cdataStack.peek(); |
| if (I.intValue() == _depth && !_cdataTagOpen) { |
| startCDATA(characters, offset, length); |
| } |
| else if (_escaping) { |
| if (_cdataTagOpen) { |
| escapeCDATA(characters, offset, length); |
| } |
| else { |
| escapeCharacters(characters, offset, length); |
| } |
| } |
| else { |
| _buffer.append(characters, offset, length); |
| } |
| } |
| |
| public void attribute(String name, String value) |
| throws TransletException |
| { |
| // System.out.println("attribute = " + name + " " + value); |
| if (_startTagOpen) { |
| int k; |
| final Attribute attr = |
| new Attribute(patchName(name), escapeString(value)); |
| |
| if ((k = _attributes.indexOf(attr)) >= 0) { |
| _attributes.setElementAt(attr, k); |
| } |
| else { |
| _attributes.add(attr); |
| } |
| } |
| } |
| |
| public void comment(String comment) throws TransletException { |
| if (_startTagOpen) { |
| closeStartTag(); |
| } |
| else if (_cdataTagOpen) { |
| closeCDATA(); |
| } |
| appendComment(comment); |
| } |
| |
| public void processingInstruction(String target, String data) |
| throws TransletException |
| { |
| // System.out.println("PI target = " + target + " data = " + data); |
| if (_startTagOpen) { |
| closeStartTag(); |
| } |
| else if (_cdataTagOpen) { |
| closeCDATA(); |
| } |
| |
| _buffer.append("<?").append(target).append(' ') |
| .append(data).append("?>"); |
| } |
| |
| public boolean setEscaping(boolean escape) throws TransletException |
| { |
| final boolean temp = _escaping; |
| _escaping = escape; |
| return temp; |
| } |
| |
| public void namespace(final String prefix, final String uri) |
| throws TransletException |
| { |
| // System.out.println("namespace prefix = " + prefix + " uri = " + uri); |
| String escaped = escapeString(uri); |
| if (_startTagOpen) { |
| if (pushNamespace(prefix, escaped)) { |
| _buffer.append(' ').append(XMLNS_PREFIX); |
| if (prefix != null && prefix != EMPTYSTRING) { |
| _buffer.append(':').append(prefix); |
| } |
| _buffer.append("=\"").append(escaped).append('"'); |
| } |
| } |
| else if (prefix != EMPTYSTRING || uri != EMPTYSTRING) { |
| BasisLibrary.runTimeError(BasisLibrary.STRAY_NAMESPACE_ERR, |
| prefix, escaped); |
| } |
| } |
| |
| protected void closeStartTag() throws TransletException { |
| super.closeStartTag(); |
| |
| if (_cdata != null) { |
| final String localName = getLocalName(_elementName); |
| final String uri = getNamespaceURI(_elementName, true); |
| |
| final StringBuffer expandedName = (uri == EMPTYSTRING) ? |
| new StringBuffer(_elementName) : |
| new StringBuffer(uri).append(':').append(localName); |
| |
| if (_cdata.containsKey(expandedName.toString())) { |
| _cdataStack.push(new Integer(_depth)); |
| } |
| } |
| } |
| |
| /** |
| * Utility method - pass a whole charactes as CDATA to SAX handler |
| */ |
| private void startCDATA(char[] ch, int off, int len) { |
| final int limit = off + len; |
| int offset = off; |
| |
| // Output start bracket - "<![CDATA[" |
| _buffer.append(BEGCDATA); |
| |
| // Detect any occurence of "]]>" in the character array |
| for (int i = offset; i < limit - 2; i++) { |
| if (ch[i] == ']' && ch[i + 1] == ']' && ch[i + 2] == '>') { |
| _buffer.append(ch, offset, i - offset) |
| .append(CNTCDATA); |
| offset = i + 3; |
| i += 2; // Skip next chars ']' and '>'. |
| } |
| } |
| |
| // Output the remaining characters |
| if (offset < limit) { |
| _buffer.append(ch, offset, limit - offset); |
| } |
| _cdataTagOpen = true; |
| } |
| |
| private void closeCDATA() { |
| _buffer.append(ENDCDATA); |
| _cdataTagOpen = false; |
| } |
| |
| /** |
| * Utility method - escape special characters and pass to SAX handler |
| */ |
| private void escapeCDATA(char[] ch, int off, int len) { |
| int offset = off; |
| int limit = off + len; |
| |
| if (limit > ch.length) { |
| limit = ch.length; |
| } |
| |
| // Step through characters and escape all special characters |
| for (int i = off; i < limit; i++) { |
| final char current = ch[i]; |
| |
| if (current > '\u00ff') { |
| _buffer.append(ch, offset, i - offset) |
| .append(CDATA_ESC_START) |
| .append(Integer.toString((int) current)) |
| .append(CDATA_ESC_END); |
| offset = i + 1; |
| } |
| } |
| // Output remaining characters |
| if (offset < limit) { |
| _buffer.append(ch, offset, limit - offset); |
| } |
| } |
| |
| /** |
| * This method escapes special characters used in attribute values |
| */ |
| private String escapeString(String value) { |
| final char[] ch = value.toCharArray(); |
| final int limit = ch.length; |
| StringBuffer result = new StringBuffer(); |
| |
| int offset = 0; |
| for (int i = 0; i < limit; i++) { |
| switch (ch[i]) { |
| case '&': |
| result.append(ch, offset, i - offset).append(AMP); |
| offset = i + 1; |
| break; |
| case '"': |
| result.append(ch, offset, i - offset).append(QUOTE); |
| offset = i + 1; |
| break; |
| case '<': |
| result.append(ch, offset, i - offset).append(LT); |
| offset = i + 1; |
| break; |
| case '>': |
| result.append(ch, offset, i - offset).append(GT); |
| offset = i + 1; |
| break; |
| case '\n': |
| result.append(ch, offset, i - offset).append(CRLF); |
| offset = i + 1; |
| break; |
| } |
| } |
| |
| if (offset < limit) { |
| result.append(ch, offset, limit - offset); |
| } |
| return result.toString(); |
| } |
| } |