Initial revision
From-SVN: r102074
This commit is contained in:
Tom Tromey
parent
6f4434b39b
commit
f911ba985a
4557 changed files with 1000262 additions and 0 deletions
762
libjava/classpath/gnu/xml/transform/StreamSerializer.java
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762
libjava/classpath/gnu/xml/transform/StreamSerializer.java
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@ -0,0 +1,762 @@
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/* StreamSerializer.java --
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.xml.transform;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.UnsupportedEncodingException;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetEncoder;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import javax.xml.XMLConstants;
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import org.w3c.dom.Attr;
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import org.w3c.dom.Document;
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import org.w3c.dom.DocumentType;
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import org.w3c.dom.NamedNodeMap;
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import org.w3c.dom.Node;
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/**
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* Serializes a DOM node to an output stream.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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public class StreamSerializer
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{
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static final int SPACE = 0x20;
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static final int BANG = 0x21; // !
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static final int APOS = 0x27; // '
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static final int SLASH = 0x2f; // /
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static final int BRA = 0x3c; // <
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static final int KET = 0x3e; // >
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static final int EQ = 0x3d; // =
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/**
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* HTML 4.01 boolean attributes
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*/
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static final Map HTML_BOOLEAN_ATTRIBUTES = new HashMap();
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static
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{
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HashSet set;
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set = new HashSet();
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set.add("nohref");
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HTML_BOOLEAN_ATTRIBUTES.put("area", set);
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set = new HashSet();
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set.add("ismap");
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HTML_BOOLEAN_ATTRIBUTES.put("img", set);
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set = new HashSet();
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set.add("declare");
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HTML_BOOLEAN_ATTRIBUTES.put("object", set);
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set = new HashSet();
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set.add("noshade");
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HTML_BOOLEAN_ATTRIBUTES.put("hr", set);
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set = new HashSet();
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set.add("compact");
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HTML_BOOLEAN_ATTRIBUTES.put("dl", set);
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HTML_BOOLEAN_ATTRIBUTES.put("ol", set);
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HTML_BOOLEAN_ATTRIBUTES.put("ul", set);
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HTML_BOOLEAN_ATTRIBUTES.put("dir", set);
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HTML_BOOLEAN_ATTRIBUTES.put("menu", set);
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set = new HashSet();
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set.add("checked");
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set.add("disabled");
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set.add("readonly");
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set.add("ismap");
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HTML_BOOLEAN_ATTRIBUTES.put("input", set);
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set = new HashSet();
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set.add("multiple");
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set.add("disabled");
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HTML_BOOLEAN_ATTRIBUTES.put("select", set);
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set = new HashSet();
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set.add("disabled");
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HTML_BOOLEAN_ATTRIBUTES.put("optgroup", set);
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set = new HashSet();
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set.add("selected");
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set.add("disabled");
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HTML_BOOLEAN_ATTRIBUTES.put("option", set);
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set = new HashSet();
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set.add("disabled");
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set.add("readonly");
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HTML_BOOLEAN_ATTRIBUTES.put("textarea", set);
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set = new HashSet();
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set.add("disabled");
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HTML_BOOLEAN_ATTRIBUTES.put("button", set);
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set = new HashSet();
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set.add("nowrap");
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HTML_BOOLEAN_ATTRIBUTES.put("th", set);
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HTML_BOOLEAN_ATTRIBUTES.put("td", set);
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set = new HashSet();
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set.add("noresize");
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HTML_BOOLEAN_ATTRIBUTES.put("frame", set);
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set = new HashSet();
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set.add("defer");
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HTML_BOOLEAN_ATTRIBUTES.put("script", set);
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}
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protected final String encoding;
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final Charset charset;
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final CharsetEncoder encoder;
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final int mode;
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final Map namespaces;
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protected String eol;
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Collection cdataSectionElements = Collections.EMPTY_SET;
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protected boolean discardDefaultContent;
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protected boolean xmlDeclaration = true;
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public StreamSerializer()
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{
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this(Stylesheet.OUTPUT_XML, null, null);
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}
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public StreamSerializer(String encoding)
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{
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this(Stylesheet.OUTPUT_XML, encoding, null);
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}
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public StreamSerializer(int mode, String encoding, String eol)
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{
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this.mode = mode;
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if (encoding == null)
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{
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encoding = "UTF-8";
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}
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this.encoding = encoding.intern();
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charset = Charset.forName(this.encoding);
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encoder = charset.newEncoder();
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this.eol = (eol != null) ? eol : System.getProperty("line.separator");
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namespaces = new HashMap();
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}
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void setCdataSectionElements(Collection c)
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{
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cdataSectionElements = c;
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}
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public void serialize(final Node node, final OutputStream out)
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throws IOException
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{
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serialize(node, out, false);
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}
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void serialize(Node node, final OutputStream out,
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boolean convertToCdata)
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throws IOException
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{
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while (node != null)
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{
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Node next = node.getNextSibling();
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doSerialize(node, out, convertToCdata);
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node = next;
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}
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}
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private void doSerialize(final Node node, final OutputStream out,
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boolean convertToCdata)
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throws IOException
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{
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if (out == null)
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{
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throw new NullPointerException("no output stream");
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}
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String value, prefix;
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Node children;
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String uri = node.getNamespaceURI();
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boolean defined = false;
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short nt = node.getNodeType();
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if (convertToCdata && nt == Node.TEXT_NODE)
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{
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nt = Node.CDATA_SECTION_NODE;
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}
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switch (nt)
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{
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case Node.ATTRIBUTE_NODE:
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prefix = node.getPrefix();
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if (XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(uri) ||
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XMLConstants.XMLNS_ATTRIBUTE.equals(prefix) ||
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(prefix != null && prefix.startsWith("xmlns:")))
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{
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String nsuri = node.getNodeValue();
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if (isDefined(nsuri))
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{
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break;
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}
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String name = node.getLocalName();
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if (name == null)
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{
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name = node.getNodeName();
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}
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define(nsuri, name);
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}
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else if (uri != null && !isDefined(uri))
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{
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prefix = define(uri, prefix);
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String nsname = (prefix == null) ? "xmlns" : "xmlns:" + prefix;
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out.write(SPACE);
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out.write(encodeText(nsname));
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out.write(EQ);
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String nsvalue = "'" + encode(uri, true, true) + "'";
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out.write(nsvalue.getBytes(encoding));
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defined = true;
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}
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out.write(SPACE);
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String a_nodeName = node.getNodeName();
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out.write(encodeText(a_nodeName));
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String a_nodeValue = node.getNodeValue();
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if (mode == Stylesheet.OUTPUT_HTML &&
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a_nodeName.equals(a_nodeValue) &&
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isHTMLBoolean((Attr) node, a_nodeName))
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{
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break;
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}
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out.write(EQ);
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value = "'" + encode(a_nodeValue, true, true) + "'";
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out.write(encodeText(value));
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break;
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case Node.ELEMENT_NODE:
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value = node.getNodeName();
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out.write(BRA);
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out.write(encodeText(value));
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if (uri != null && !isDefined(uri))
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{
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prefix = define(uri, node.getPrefix());
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String nsname = (prefix == null) ? "xmlns" : "xmlns:" + prefix;
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out.write(SPACE);
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out.write(encodeText(nsname));
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out.write(EQ);
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String nsvalue = "'" + encode(uri, true, true) + "'";
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out.write(encodeText(nsvalue));
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defined = true;
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}
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NamedNodeMap attrs = node.getAttributes();
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if (attrs != null)
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{
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int len = attrs.getLength();
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for (int i = 0; i < len; i++)
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{
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Attr attr = (Attr) attrs.item(i);
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if (discardDefaultContent && !attr.getSpecified())
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{
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// NOOP
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}
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else
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{
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serialize(attr, out, false);
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}
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}
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}
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convertToCdata = cdataSectionElements.contains(value);
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children = node.getFirstChild();
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if (children == null)
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{
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out.write(SLASH);
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out.write(KET);
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}
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else
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{
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out.write(KET);
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serialize(children, out, convertToCdata);
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out.write(BRA);
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out.write(SLASH);
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out.write(encodeText(value));
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out.write(KET);
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}
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break;
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case Node.TEXT_NODE:
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value = node.getNodeValue();
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if (!"yes".equals(node.getUserData("disable-output-escaping")))
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{
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value = encode(value, false, false);
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}
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out.write(encodeText(value));
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break;
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case Node.CDATA_SECTION_NODE:
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value = "<![CDATA[" + node.getNodeValue() + "]]>";
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out.write(encodeText(value));
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break;
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case Node.COMMENT_NODE:
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value = "<!--" + node.getNodeValue() + "-->";
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out.write(encodeText(value));
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Node cp = node.getParentNode();
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if (cp != null && cp.getNodeType() == Node.DOCUMENT_NODE)
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{
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out.write(encodeText(eol));
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}
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break;
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case Node.DOCUMENT_NODE:
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case Node.DOCUMENT_FRAGMENT_NODE:
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if (mode == Stylesheet.OUTPUT_XML)
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{
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if ("UTF-16".equalsIgnoreCase(encoding))
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{
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out.write(0xfe);
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out.write(0xff);
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}
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if (!"yes".equals(node.getUserData("omit-xml-declaration")) &&
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xmlDeclaration)
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{
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Document doc = (node instanceof Document) ?
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(Document) node : null;
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String version = (doc != null) ? doc.getXmlVersion() : null;
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if (version == null)
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{
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version = (String) node.getUserData("version");
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}
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if (version == null)
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{
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version = "1.0";
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}
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out.write(BRA);
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out.write(0x3f);
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out.write("xml version='".getBytes("US-ASCII"));
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out.write(version.getBytes("US-ASCII"));
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out.write(APOS);
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if (!("UTF-8".equalsIgnoreCase(encoding)))
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{
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out.write(" encoding='".getBytes("US-ASCII"));
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out.write(encoding.getBytes("US-ASCII"));
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out.write(APOS);
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}
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if ((doc != null && doc.getXmlStandalone()) ||
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"yes".equals(node.getUserData("standalone")))
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{
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out.write(" standalone='yes'".getBytes("US-ASCII"));
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}
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out.write(0x3f);
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out.write(KET);
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out.write(encodeText(eol));
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}
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// TODO warn if not outputting the declaration would be a
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// problem
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}
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else if (mode == Stylesheet.OUTPUT_HTML)
|
||||
{
|
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// Ensure that encoding is accessible
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String mediaType = (String) node.getUserData("media-type");
|
||||
if (mediaType == null)
|
||||
{
|
||||
mediaType = "text/html";
|
||||
}
|
||||
String contentType = mediaType + "; charset=" +
|
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((encoding.indexOf(' ') != -1) ?
|
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"\"" + encoding + "\"" :
|
||||
encoding);
|
||||
Document doc = (node instanceof Document) ? (Document) node :
|
||||
node.getOwnerDocument();
|
||||
Node html = null;
|
||||
for (Node ctx = node.getFirstChild(); ctx != null;
|
||||
ctx = ctx.getNextSibling())
|
||||
{
|
||||
if (ctx.getNodeType() == Node.ELEMENT_NODE)
|
||||
{
|
||||
html = ctx;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (html == null)
|
||||
{
|
||||
html = doc.createElement("html");
|
||||
node.appendChild(html);
|
||||
}
|
||||
Node head = null;
|
||||
for (Node ctx = html.getFirstChild(); ctx != null;
|
||||
ctx = ctx.getNextSibling())
|
||||
{
|
||||
if (ctx.getNodeType() == Node.ELEMENT_NODE)
|
||||
{
|
||||
String name = ctx.getLocalName();
|
||||
if (name == null)
|
||||
{
|
||||
name = ctx.getNodeName();
|
||||
}
|
||||
if ("head".equalsIgnoreCase(name))
|
||||
{
|
||||
head = ctx;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (head == null)
|
||||
{
|
||||
head = doc.createElement("head");
|
||||
Node c1 = null;
|
||||
for (Node ctx = html.getFirstChild(); ctx != null;
|
||||
ctx = ctx.getNextSibling())
|
||||
{
|
||||
if (ctx.getNodeType() == Node.ELEMENT_NODE)
|
||||
{
|
||||
c1 = ctx;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (c1 != null)
|
||||
{
|
||||
html.insertBefore(head, c1);
|
||||
}
|
||||
else
|
||||
{
|
||||
html.appendChild(head);
|
||||
}
|
||||
}
|
||||
Node meta = null;
|
||||
Node metaContent = null;
|
||||
for (Node ctx = head.getFirstChild(); ctx != null;
|
||||
ctx = ctx.getNextSibling())
|
||||
{
|
||||
if (ctx.getNodeType() == Node.ELEMENT_NODE)
|
||||
{
|
||||
String name = ctx.getLocalName();
|
||||
if (name == null)
|
||||
{
|
||||
name = ctx.getNodeName();
|
||||
}
|
||||
if ("meta".equalsIgnoreCase(name))
|
||||
{
|
||||
NamedNodeMap metaAttrs = ctx.getAttributes();
|
||||
int len = metaAttrs.getLength();
|
||||
String httpEquiv = null;
|
||||
Node content = null;
|
||||
for (int i = 0; i < len; i++)
|
||||
{
|
||||
Node attr = metaAttrs.item(i);
|
||||
String attrName = attr.getNodeName();
|
||||
if ("http-equiv".equalsIgnoreCase(attrName))
|
||||
{
|
||||
httpEquiv = attr.getNodeValue();
|
||||
}
|
||||
else if ("content".equalsIgnoreCase(attrName))
|
||||
{
|
||||
content = attr;
|
||||
}
|
||||
}
|
||||
if ("Content-Type".equalsIgnoreCase(httpEquiv))
|
||||
{
|
||||
meta = ctx;
|
||||
metaContent = content;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (meta == null)
|
||||
{
|
||||
meta = doc.createElement("meta");
|
||||
// Insert first
|
||||
Node first = head.getFirstChild();
|
||||
if (first == null)
|
||||
{
|
||||
head.appendChild(meta);
|
||||
}
|
||||
else
|
||||
{
|
||||
head.insertBefore(meta, first);
|
||||
}
|
||||
Node metaHttpEquiv = doc.createAttribute("http-equiv");
|
||||
meta.getAttributes().setNamedItem(metaHttpEquiv);
|
||||
metaHttpEquiv.setNodeValue("Content-Type");
|
||||
}
|
||||
if (metaContent == null)
|
||||
{
|
||||
metaContent = doc.createAttribute("content");
|
||||
meta.getAttributes().setNamedItem(metaContent);
|
||||
}
|
||||
metaContent.setNodeValue(contentType);
|
||||
// phew
|
||||
}
|
||||
children = node.getFirstChild();
|
||||
if (children != null)
|
||||
{
|
||||
serialize(children, out, convertToCdata);
|
||||
}
|
||||
break;
|
||||
case Node.DOCUMENT_TYPE_NODE:
|
||||
DocumentType doctype = (DocumentType) node;
|
||||
out.write(BRA);
|
||||
out.write(BANG);
|
||||
out.write(encodeText("DOCTYPE "));
|
||||
value = doctype.getNodeName();
|
||||
out.write(encodeText(value));
|
||||
String publicId = doctype.getPublicId();
|
||||
if (publicId != null)
|
||||
{
|
||||
out.write(encodeText(" PUBLIC "));
|
||||
out.write(APOS);
|
||||
out.write(encodeText(publicId));
|
||||
out.write(APOS);
|
||||
}
|
||||
String systemId = doctype.getSystemId();
|
||||
if (systemId != null)
|
||||
{
|
||||
out.write(encodeText(" SYSTEM "));
|
||||
out.write(APOS);
|
||||
out.write(encodeText(systemId));
|
||||
out.write(APOS);
|
||||
}
|
||||
String internalSubset = doctype.getInternalSubset();
|
||||
if (internalSubset != null)
|
||||
{
|
||||
out.write(encodeText(internalSubset));
|
||||
}
|
||||
out.write(KET);
|
||||
out.write(eol.getBytes(encoding));
|
||||
break;
|
||||
case Node.ENTITY_REFERENCE_NODE:
|
||||
value = "&" + node.getNodeValue() + ";";
|
||||
out.write(encodeText(value));
|
||||
break;
|
||||
case Node.PROCESSING_INSTRUCTION_NODE:
|
||||
value = "<?" + node.getNodeName() + " " + node.getNodeValue() + "?>";
|
||||
out.write(encodeText(value));
|
||||
Node pp = node.getParentNode();
|
||||
if (pp != null && pp.getNodeType() == Node.DOCUMENT_NODE)
|
||||
{
|
||||
out.write(encodeText(eol));
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (defined)
|
||||
{
|
||||
undefine(uri);
|
||||
}
|
||||
}
|
||||
|
||||
boolean isDefined(String uri)
|
||||
{
|
||||
return XMLConstants.XML_NS_URI.equals(uri) ||
|
||||
XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(uri) ||
|
||||
namespaces.containsKey(uri);
|
||||
}
|
||||
|
||||
String define(String uri, String prefix)
|
||||
{
|
||||
while (namespaces.containsValue(prefix))
|
||||
{
|
||||
// Fabricate new prefix
|
||||
prefix = prefix + "_";
|
||||
}
|
||||
namespaces.put(uri, prefix);
|
||||
return prefix;
|
||||
}
|
||||
|
||||
void undefine(String uri)
|
||||
{
|
||||
namespaces.remove(uri);
|
||||
}
|
||||
|
||||
final byte[] encodeText(String text)
|
||||
throws IOException
|
||||
{
|
||||
encoder.reset();
|
||||
if (!encoder.canEncode(text))
|
||||
{
|
||||
// Check each character
|
||||
StringBuffer buf = new StringBuffer();
|
||||
int len = text.length();
|
||||
for (int i = 0; i < len; i++)
|
||||
{
|
||||
char c = text.charAt(i);
|
||||
if (encoder.canEncode(c))
|
||||
{
|
||||
buf.append(c);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Replace with character entity reference
|
||||
String hex = Integer.toHexString((int) c);
|
||||
buf.append("&#x");
|
||||
buf.append(hex);
|
||||
buf.append(';');
|
||||
}
|
||||
}
|
||||
text = buf.toString();
|
||||
}
|
||||
ByteBuffer encoded = encoder.encode(CharBuffer.wrap(text));
|
||||
int len = encoded.limit() - encoded.position();
|
||||
if (encoded.hasArray())
|
||||
{
|
||||
byte[] ret = encoded.array();
|
||||
if (ret.length > len)
|
||||
{
|
||||
// Why?
|
||||
byte[] ret2 = new byte[len];
|
||||
System.arraycopy(ret, 0, ret2, 0, len);
|
||||
ret = ret2;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
encoded.flip();
|
||||
byte[] ret = new byte[len];
|
||||
encoded.get(ret, 0, len);
|
||||
return ret;
|
||||
}
|
||||
|
||||
String encode(String text, boolean encodeCtl, boolean inAttr)
|
||||
{
|
||||
int len = text.length();
|
||||
StringBuffer buf = null;
|
||||
for (int i = 0; i < len; i++)
|
||||
{
|
||||
char c = text.charAt(i);
|
||||
if (c == '<')
|
||||
{
|
||||
if (buf == null)
|
||||
{
|
||||
buf = new StringBuffer(text.substring(0, i));
|
||||
}
|
||||
buf.append("<");
|
||||
}
|
||||
else if (c == '>')
|
||||
{
|
||||
if (buf == null)
|
||||
{
|
||||
buf = new StringBuffer(text.substring(0, i));
|
||||
}
|
||||
buf.append(">");
|
||||
}
|
||||
else if (c == '&')
|
||||
{
|
||||
if (mode == Stylesheet.OUTPUT_HTML && (i + 1) < len &&
|
||||
text.charAt(i + 1) == '{')
|
||||
{
|
||||
if (buf != null)
|
||||
{
|
||||
buf.append(c);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (buf == null)
|
||||
{
|
||||
buf = new StringBuffer(text.substring(0, i));
|
||||
}
|
||||
buf.append("&");
|
||||
}
|
||||
}
|
||||
else if (c == '\'' && inAttr)
|
||||
{
|
||||
if (buf == null)
|
||||
{
|
||||
buf = new StringBuffer(text.substring(0, i));
|
||||
}
|
||||
buf.append("'");
|
||||
}
|
||||
else if (c == '"' && inAttr)
|
||||
{
|
||||
if (buf == null)
|
||||
{
|
||||
buf = new StringBuffer(text.substring(0, i));
|
||||
}
|
||||
buf.append(""");
|
||||
}
|
||||
else if (encodeCtl)
|
||||
{
|
||||
if (c < 0x20)
|
||||
{
|
||||
if (buf == null)
|
||||
{
|
||||
buf = new StringBuffer(text.substring(0, i));
|
||||
}
|
||||
buf.append('&');
|
||||
buf.append('#');
|
||||
buf.append((int) c);
|
||||
buf.append(';');
|
||||
}
|
||||
else if (buf != null)
|
||||
{
|
||||
buf.append(c);
|
||||
}
|
||||
}
|
||||
else if (buf != null)
|
||||
{
|
||||
buf.append(c);
|
||||
}
|
||||
}
|
||||
return (buf == null) ? text : buf.toString();
|
||||
}
|
||||
|
||||
String toString(Node node)
|
||||
{
|
||||
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
||||
try
|
||||
{
|
||||
serialize(node, out);
|
||||
return new String(out.toByteArray(), encoding);
|
||||
}
|
||||
catch (IOException e)
|
||||
{
|
||||
throw new RuntimeException(e.getMessage());
|
||||
}
|
||||
}
|
||||
|
||||
boolean isHTMLBoolean(Attr attr, String attrName)
|
||||
{
|
||||
attrName = attrName.toLowerCase();
|
||||
Node element = attr.getOwnerElement();
|
||||
String elementName = element.getLocalName();
|
||||
if (elementName == null)
|
||||
{
|
||||
elementName = element.getNodeName();
|
||||
}
|
||||
elementName = elementName.toLowerCase();
|
||||
Collection attributes =
|
||||
(Collection) HTML_BOOLEAN_ATTRIBUTES.get(elementName);
|
||||
return (attributes != null && attributes.contains(attrName));
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue