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jlechner |
/* XMLWriter.java --
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Copyright (C) 1999,2000,2001 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.util;
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import java.io.BufferedWriter;
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import java.io.CharConversionException;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.Writer;
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import java.util.Stack;
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import org.xml.sax.*;
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import org.xml.sax.ext.*;
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import org.xml.sax.helpers.*;
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/**
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* This class is a SAX handler which writes all its input as a well formed
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* XML or XHTML document. If driven using SAX2 events, this output may
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* include a recreated document type declaration, subject to limitations
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* of SAX (no internal subset exposed) or DOM (the important declarations,
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* with their documentation, are discarded).
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*
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* <p> By default, text is generated "as-is", but some optional modes
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* are supported. Pretty-printing is supported, to make life easier
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* for people reading the output. XHTML (1.0) output has can be made
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* particularly pretty; all the built-in character entities are known.
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* Canonical XML can also be generated, assuming the input is properly
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* formed.
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*
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* <hr>
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*
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* <p> Some of the methods on this class are intended for applications to
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* use directly, rather than as pure SAX2 event callbacks. Some of those
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* methods access the JavaBeans properties (used to tweak output formats,
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* for example canonicalization and pretty printing). Subclasses
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* are expected to add new behaviors, not to modify current behavior, so
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* many such methods are final.</p>
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*
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* <p> The <em>write*()</em> methods may be slightly simpler for some
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* applications to use than direct callbacks. For example, they support
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* a simple policy for encoding data items as the content of a single element.
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*
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* <p> To reuse an XMLWriter you must provide it with a new Writer, since
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* this handler closes the writer it was given as part of its endDocument()
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* handling. (XML documents have an end of input, and the way to encode
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* that on a stream is to close it.) </p>
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*
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* <hr>
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*
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* <p> Note that any relative URIs in the source document, as found in
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* entity and notation declarations, ought to have been fully resolved by
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* the parser providing events to this handler. This means that the
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* output text should only have fully resolved URIs, which may not be
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* the desired behavior in cases where later binding is desired. </p>
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*
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* <p> <em>Note that due to SAX2 defaults, you may need to manually
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* ensure that the input events are XML-conformant with respect to namespace
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* prefixes and declarations. {@link gnu.xml.pipeline.NSFilter} is
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* one solution to this problem, in the context of processing pipelines.</em>
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* Something as simple as connecting this handler to a parser might not
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* generate the correct output. Another workaround is to ensure that the
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* <em>namespace-prefixes</em> feature is always set to true, if you're
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* hooking this directly up to some XMLReader implementation.
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*
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* @see gnu.xml.pipeline.TextConsumer
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*
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* @author David Brownell
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*/
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public class XMLWriter
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implements ContentHandler, LexicalHandler, DTDHandler, DeclHandler
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{
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// text prints/escapes differently depending on context
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// CTX_ENTITY ... entity literal value
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// CTX_ATTRIBUTE ... attribute literal value
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// CTX_CONTENT ... content of an element
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// CTX_UNPARSED ... CDATA, comment, PI, names, etc
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// CTX_NAME ... name or nmtoken, no escapes possible
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private static final int CTX_ENTITY = 1;
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private static final int CTX_ATTRIBUTE = 2;
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private static final int CTX_CONTENT = 3;
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private static final int CTX_UNPARSED = 4;
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private static final int CTX_NAME = 5;
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// FIXME: names (element, attribute, PI, notation, etc) are not
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// currently written out with range checks (escapeChars).
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// In non-XHTML, some names can't be directly written; panic!
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private static String sysEOL;
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static {
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try {
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sysEOL = System.getProperty ("line.separator", "\n");
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// don't use the system's EOL if it's illegal XML.
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if (!isLineEnd (sysEOL))
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sysEOL = "\n";
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} catch (SecurityException e) {
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sysEOL = "\n";
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}
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}
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private static boolean isLineEnd (String eol)
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{
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return "\n".equals (eol)
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|| "\r".equals (eol)
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|| "\r\n".equals (eol);
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}
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private Writer out;
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private boolean inCDATA;
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private int elementNestLevel;
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private String eol = sysEOL;
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private short dangerMask;
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private StringBuffer stringBuf;
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private Locator locator;
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private ErrorHandler errHandler;
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private boolean expandingEntities = false;
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private int entityNestLevel;
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private boolean xhtml;
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private boolean startedDoctype;
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private String encoding;
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private boolean canonical;
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private boolean inDoctype;
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private boolean inEpilogue;
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// pretty printing controls
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private boolean prettyPrinting;
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private int column;
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private boolean noWrap;
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private Stack space = new Stack ();
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// this is not a hard'n'fast rule -- longer lines are OK,
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// but are to be avoided. Here, prettyprinting is more to
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// show structure "cleanly" than to be precise about it.
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// better to have ragged layout than one line 24Kb long.
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private static final int lineLength = 75;
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/**
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* Constructs this handler with System.out used to write SAX events
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* using the UTF-8 encoding. Avoid using this except when you know
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* it's safe to close System.out at the end of the document.
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*/
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public XMLWriter () throws IOException
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{ this (System.out); }
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/**
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* Constructs a handler which writes all input to the output stream
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* in the UTF-8 encoding, and closes it when endDocument is called.
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* (Yes it's annoying that this throws an exception -- but there's
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* really no way around it, since it's barely possible a JDK may
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* exist somewhere that doesn't know how to emit UTF-8.)
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*/
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public XMLWriter (OutputStream out) throws IOException
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{
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this (new OutputStreamWriter (out, "UTF8"));
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}
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/**
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* Constructs a handler which writes all input to the writer, and then
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* closes the writer when the document ends. If an XML declaration is
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* written onto the output, and this class can determine the name of
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* the character encoding for this writer, that encoding name will be
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* included in the XML declaration.
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*
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* <P> See the description of the constructor which takes an encoding
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* name for imporant information about selection of encodings.
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*
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* @param writer XML text is written to this writer.
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*/
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public XMLWriter (Writer writer)
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{
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this (writer, null);
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}
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/**
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* Constructs a handler which writes all input to the writer, and then
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* closes the writer when the document ends. If an XML declaration is
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* written onto the output, this class will use the specified encoding
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* name in that declaration. If no encoding name is specified, no
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* encoding name will be declared unless this class can otherwise
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* determine the name of the character encoding for this writer.
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*
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* <P> At this time, only the UTF-8 ("UTF8") and UTF-16 ("Unicode")
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* output encodings are fully lossless with respect to XML data. If you
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* use any other encoding you risk having your data be silently mangled
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* on output, as the standard Java character encoding subsystem silently
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* maps non-encodable characters to a question mark ("?") and will not
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* report such errors to applications.
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*
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* <p> For a few other encodings the risk can be reduced. If the writer is
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* a java.io.OutputStreamWriter, and uses either the ISO-8859-1 ("8859_1",
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* "ISO8859_1", etc) or US-ASCII ("ASCII") encodings, content which
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* can't be encoded in those encodings will be written safely. Where
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* relevant, the XHTML entity names will be used; otherwise, numeric
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* character references will be emitted.
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*
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* <P> However, there remain a number of cases where substituting such
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* entity or character references is not an option. Such references are
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* not usable within a DTD, comment, PI, or CDATA section. Neither may
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* they be used when element, attribute, entity, or notation names have
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* the problematic characters.
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*
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* @param writer XML text is written to this writer.
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* @param encoding if non-null, and an XML declaration is written,
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* this is the name that will be used for the character encoding.
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*/
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public XMLWriter (Writer writer, String encoding)
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{
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setWriter (writer, encoding);
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}
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private void setEncoding (String encoding)
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{
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if (encoding == null && out instanceof OutputStreamWriter)
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encoding = ((OutputStreamWriter)out).getEncoding ();
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if (encoding != null) {
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encoding = encoding.toUpperCase ();
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// Use official encoding names where we know them,
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// avoiding the Java-only names. When using common
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// encodings where we can easily tell if characters
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// are out of range, we'll escape out-of-range
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// characters using character refs for safety.
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// I _think_ these are all the main synonyms for these!
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if ("UTF8".equals (encoding)) {
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encoding = "UTF-8";
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} else if ("US-ASCII".equals (encoding)
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|| "ASCII".equals (encoding)) {
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dangerMask = (short) 0xff80;
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encoding = "US-ASCII";
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} else if ("ISO-8859-1".equals (encoding)
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|| "8859_1".equals (encoding)
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|| "ISO8859_1".equals (encoding)) {
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dangerMask = (short) 0xff00;
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encoding = "ISO-8859-1";
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} else if ("UNICODE".equals (encoding)
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|| "UNICODE-BIG".equals (encoding)
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|| "UNICODE-LITTLE".equals (encoding)) {
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encoding = "UTF-16";
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// TODO: UTF-16BE, UTF-16LE ... no BOM; what
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// release of JDK supports those Unicode names?
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}
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if (dangerMask != 0)
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stringBuf = new StringBuffer ();
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}
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this.encoding = encoding;
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}
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/**
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* Resets the handler to write a new text document.
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*
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* @param writer XML text is written to this writer.
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* @param encoding if non-null, and an XML declaration is written,
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* this is the name that will be used for the character encoding.
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*
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* @exception IllegalStateException if the current
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* document hasn't yet ended (with {@link #endDocument})
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*/
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final public void setWriter (Writer writer, String encoding)
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{
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if (out != null)
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throw new IllegalStateException (
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"can't change stream in mid course");
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out = writer;
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if (out != null)
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setEncoding (encoding);
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if (!(out instanceof BufferedWriter))
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out = new BufferedWriter (out);
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space.push ("default");
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}
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/**
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* Assigns the line ending style to be used on output.
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* @param eolString null to use the system default; else
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* "\n", "\r", or "\r\n".
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*/
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final public void setEOL (String eolString)
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{
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if (eolString == null)
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eol = sysEOL;
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else if (!isLineEnd (eolString))
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eol = eolString;
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else
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throw new IllegalArgumentException (eolString);
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}
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/**
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* Assigns the error handler to be used to present most fatal
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* errors.
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*/
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public void setErrorHandler (ErrorHandler handler)
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{
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errHandler = handler;
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}
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343 |
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/**
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* Used internally and by subclasses, this encapsulates the logic
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346 |
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|
* involved in reporting fatal errors. It uses locator information
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347 |
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|
* for good diagnostics, if available, and gives the application's
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|
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* ErrorHandler the opportunity to handle the error before throwing
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349 |
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* an exception.
|
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*/
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351 |
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protected void fatal (String message, Exception e)
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352 |
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throws SAXException
|
353 |
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{
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SAXParseException x;
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355 |
|
|
|
356 |
|
|
if (locator == null)
|
357 |
|
|
x = new SAXParseException (message, null, null, -1, -1, e);
|
358 |
|
|
else
|
359 |
|
|
x = new SAXParseException (message, locator, e);
|
360 |
|
|
if (errHandler != null)
|
361 |
|
|
errHandler.fatalError (x);
|
362 |
|
|
throw x;
|
363 |
|
|
}
|
364 |
|
|
|
365 |
|
|
|
366 |
|
|
// JavaBeans properties
|
367 |
|
|
|
368 |
|
|
/**
|
369 |
|
|
* Controls whether the output should attempt to follow the "transitional"
|
370 |
|
|
* XHTML rules so that it meets the "HTML Compatibility Guidelines"
|
371 |
|
|
* appendix in the XHTML specification. A "transitional" Document Type
|
372 |
|
|
* Declaration (DTD) is placed near the beginning of the output document,
|
373 |
|
|
* instead of whatever DTD would otherwise have been placed there, and
|
374 |
|
|
* XHTML empty elements are printed specially. When writing text in
|
375 |
|
|
* US-ASCII or ISO-8859-1 encodings, the predefined XHTML internal
|
376 |
|
|
* entity names are used (in preference to character references) when
|
377 |
|
|
* writing content characters which can't be expressed in those encodings.
|
378 |
|
|
*
|
379 |
|
|
* <p> When this option is enabled, it is the caller's responsibility
|
380 |
|
|
* to ensure that the input is otherwise valid as XHTML. Things to
|
381 |
|
|
* be careful of in all cases, as described in the appendix referenced
|
382 |
|
|
* above, include: <ul>
|
383 |
|
|
*
|
384 |
|
|
* <li> Element and attribute names must be in lower case, both
|
385 |
|
|
* in the document and in any CSS style sheet.
|
386 |
|
|
* <li> All XML constructs must be valid as defined by the XHTML
|
387 |
|
|
* "transitional" DTD (including all familiar constructs,
|
388 |
|
|
* even deprecated ones).
|
389 |
|
|
* <li> The root element must be "html".
|
390 |
|
|
* <li> Elements that must be empty (such as <em><br></em>
|
391 |
|
|
* must have no content.
|
392 |
|
|
* <li> Use both <em>lang</em> and <em>xml:lang</em> attributes
|
393 |
|
|
* when specifying language.
|
394 |
|
|
* <li> Similarly, use both <em>id</em> and <em>name</em> attributes
|
395 |
|
|
* when defining elements that may be referred to through
|
396 |
|
|
* URI fragment identifiers ... and make sure that the
|
397 |
|
|
* value is a legal NMTOKEN, since not all such HTML 4.0
|
398 |
|
|
* identifiers are valid in XML.
|
399 |
|
|
* <li> Be careful with character encodings; make sure you provide
|
400 |
|
|
* a <em><meta http-equiv="Content-type"
|
401 |
|
|
* content="text/xml;charset=..." /></em> element in
|
402 |
|
|
* the HTML "head" element, naming the same encoding
|
403 |
|
|
* used to create this handler. Also, if that encoding
|
404 |
|
|
* is anything other than US-ASCII, make sure that if
|
405 |
|
|
* the document is given a MIME content type, it has
|
406 |
|
|
* a <em>charset=...</em> attribute with that encoding.
|
407 |
|
|
* </ul>
|
408 |
|
|
*
|
409 |
|
|
* <p> Additionally, some of the oldest browsers have additional
|
410 |
|
|
* quirks, to address with guidelines such as: <ul>
|
411 |
|
|
*
|
412 |
|
|
* <li> Processing instructions may be rendered, so avoid them.
|
413 |
|
|
* (Similarly for an XML declaration.)
|
414 |
|
|
* <li> Embedded style sheets and scripts should not contain XML
|
415 |
|
|
* markup delimiters: &, <, and ]]> are trouble.
|
416 |
|
|
* <li> Attribute values should not have line breaks or multiple
|
417 |
|
|
* consecutive white space characters.
|
418 |
|
|
* <li> Use no more than one of the deprecated (transitional)
|
419 |
|
|
* <em><isindex></em> elements.
|
420 |
|
|
* <li> Some boolean attributes (such as <em>compact, checked,
|
421 |
|
|
* disabled, readonly, selected,</em> and more) confuse
|
422 |
|
|
* some browsers, since they only understand minimized
|
423 |
|
|
* versions which are illegal in XML.
|
424 |
|
|
* </ul>
|
425 |
|
|
*
|
426 |
|
|
* <p> Also, some characteristics of the resulting output may be
|
427 |
|
|
* a function of whether the document is later given a MIME
|
428 |
|
|
* content type of <em>text/html</em> rather than one indicating
|
429 |
|
|
* XML (<em>application/xml</em> or <em>text/xml</em>). Worse,
|
430 |
|
|
* some browsers ignore MIME content types and prefer to rely URI
|
431 |
|
|
* name suffixes -- so an "index.xml" could always be XML, never
|
432 |
|
|
* XHTML, no matter its MIME type.
|
433 |
|
|
*/
|
434 |
|
|
final public void setXhtml (boolean value)
|
435 |
|
|
{
|
436 |
|
|
if (locator != null)
|
437 |
|
|
throw new IllegalStateException ("started parsing");
|
438 |
|
|
xhtml = value;
|
439 |
|
|
if (xhtml)
|
440 |
|
|
canonical = false;
|
441 |
|
|
}
|
442 |
|
|
|
443 |
|
|
/**
|
444 |
|
|
* Returns true if the output attempts to echo the input following
|
445 |
|
|
* "transitional" XHTML rules and matching the "HTML Compatibility
|
446 |
|
|
* Guidelines" so that an HTML version 3 browser can read the output
|
447 |
|
|
* as HTML; returns false (the default) othewise.
|
448 |
|
|
*/
|
449 |
|
|
final public boolean isXhtml ()
|
450 |
|
|
{
|
451 |
|
|
return xhtml;
|
452 |
|
|
}
|
453 |
|
|
|
454 |
|
|
/**
|
455 |
|
|
* Controls whether the output text contains references to
|
456 |
|
|
* entities (the default), or instead contains the expanded
|
457 |
|
|
* values of those entities.
|
458 |
|
|
*/
|
459 |
|
|
final public void setExpandingEntities (boolean value)
|
460 |
|
|
{
|
461 |
|
|
if (locator != null)
|
462 |
|
|
throw new IllegalStateException ("started parsing");
|
463 |
|
|
expandingEntities = value;
|
464 |
|
|
if (!expandingEntities)
|
465 |
|
|
canonical = false;
|
466 |
|
|
}
|
467 |
|
|
|
468 |
|
|
/**
|
469 |
|
|
* Returns true if the output will have no entity references;
|
470 |
|
|
* returns false (the default) otherwise.
|
471 |
|
|
*/
|
472 |
|
|
final public boolean isExpandingEntities ()
|
473 |
|
|
{
|
474 |
|
|
return expandingEntities;
|
475 |
|
|
}
|
476 |
|
|
|
477 |
|
|
/**
|
478 |
|
|
* Controls pretty-printing, which by default is not enabled
|
479 |
|
|
* (and currently is most useful for XHTML output).
|
480 |
|
|
* Pretty printing enables structural indentation, sorting of attributes
|
481 |
|
|
* by name, line wrapping, and potentially other mechanisms for making
|
482 |
|
|
* output more or less readable.
|
483 |
|
|
*
|
484 |
|
|
* <p> At this writing, structural indentation and line wrapping are
|
485 |
|
|
* enabled when pretty printing is enabled and the <em>xml:space</em>
|
486 |
|
|
* attribute has the value <em>default</em> (its other legal value is
|
487 |
|
|
* <em>preserve</em>, as defined in the XML specification). The three
|
488 |
|
|
* XHTML element types which use another value are recognized by their
|
489 |
|
|
* names (namespaces are ignored).
|
490 |
|
|
*
|
491 |
|
|
* <p> Also, for the record, the "pretty" aspect of printing here
|
492 |
|
|
* is more to provide basic structure on outputs that would otherwise
|
493 |
|
|
* risk being a single long line of text. For now, expect the
|
494 |
|
|
* structure to be ragged ... unless you'd like to submit a patch
|
495 |
|
|
* to make this be more strictly formatted!
|
496 |
|
|
*
|
497 |
|
|
* @exception IllegalStateException thrown if this method is invoked
|
498 |
|
|
* after output has begun.
|
499 |
|
|
*/
|
500 |
|
|
final public void setPrettyPrinting (boolean value)
|
501 |
|
|
{
|
502 |
|
|
if (locator != null)
|
503 |
|
|
throw new IllegalStateException ("started parsing");
|
504 |
|
|
prettyPrinting = value;
|
505 |
|
|
if (prettyPrinting)
|
506 |
|
|
canonical = false;
|
507 |
|
|
}
|
508 |
|
|
|
509 |
|
|
/**
|
510 |
|
|
* Returns value of flag controlling pretty printing.
|
511 |
|
|
*/
|
512 |
|
|
final public boolean isPrettyPrinting ()
|
513 |
|
|
{
|
514 |
|
|
return prettyPrinting;
|
515 |
|
|
}
|
516 |
|
|
|
517 |
|
|
|
518 |
|
|
/**
|
519 |
|
|
* Sets the output style to be canonicalized. Input events must
|
520 |
|
|
* meet requirements that are slightly more stringent than the
|
521 |
|
|
* basic well-formedness ones, and include: <ul>
|
522 |
|
|
*
|
523 |
|
|
* <li> Namespace prefixes must not have been changed from those
|
524 |
|
|
* in the original document. (This may only be ensured by setting
|
525 |
|
|
* the SAX2 XMLReader <em>namespace-prefixes</em> feature flag;
|
526 |
|
|
* by default, it is cleared.)
|
527 |
|
|
*
|
528 |
|
|
* <li> Redundant namespace declaration attributes have been
|
529 |
|
|
* removed. (If an ancestor element defines a namespace prefix
|
530 |
|
|
* and that declaration hasn't been overriden, an element must
|
531 |
|
|
* not redeclare it.)
|
532 |
|
|
*
|
533 |
|
|
* <li> If comments are not to be included in the canonical output,
|
534 |
|
|
* they must first be removed from the input event stream; this
|
535 |
|
|
* <em>Canonical XML with comments</em> by default.
|
536 |
|
|
*
|
537 |
|
|
* <li> If the input character encoding was not UCS-based, the
|
538 |
|
|
* character data must have been normalized using Unicode
|
539 |
|
|
* Normalization Form C. (UTF-8 and UTF-16 are UCS-based.)
|
540 |
|
|
*
|
541 |
|
|
* <li> Attribute values must have been normalized, as is done
|
542 |
|
|
* by any conformant XML processor which processes all external
|
543 |
|
|
* parameter entities.
|
544 |
|
|
*
|
545 |
|
|
* <li> Similarly, attribute value defaulting has been performed.
|
546 |
|
|
*
|
547 |
|
|
* </ul>
|
548 |
|
|
*
|
549 |
|
|
* <p> Note that fragments of XML documents, as specified by an XPath
|
550 |
|
|
* node set, may be canonicalized. In such cases, elements may need
|
551 |
|
|
* some fixup (for <em>xml:*</em> attributes and application-specific
|
552 |
|
|
* context).
|
553 |
|
|
*
|
554 |
|
|
* @exception IllegalArgumentException if the output encoding
|
555 |
|
|
* is anything other than UTF-8.
|
556 |
|
|
*/
|
557 |
|
|
final public void setCanonical (boolean value)
|
558 |
|
|
{
|
559 |
|
|
if (value && !"UTF-8".equals (encoding))
|
560 |
|
|
throw new IllegalArgumentException ("encoding != UTF-8");
|
561 |
|
|
canonical = value;
|
562 |
|
|
if (canonical) {
|
563 |
|
|
prettyPrinting = xhtml = false;
|
564 |
|
|
expandingEntities = true;
|
565 |
|
|
eol = "\n";
|
566 |
|
|
}
|
567 |
|
|
}
|
568 |
|
|
|
569 |
|
|
|
570 |
|
|
/**
|
571 |
|
|
* Returns value of flag controlling canonical output.
|
572 |
|
|
*/
|
573 |
|
|
final public boolean isCanonical ()
|
574 |
|
|
{
|
575 |
|
|
return canonical;
|
576 |
|
|
}
|
577 |
|
|
|
578 |
|
|
|
579 |
|
|
/**
|
580 |
|
|
* Flushes the output stream. When this handler is used in long lived
|
581 |
|
|
* pipelines, it can be important to flush buffered state, for example
|
582 |
|
|
* so that it can reach the disk as part of a state checkpoint.
|
583 |
|
|
*/
|
584 |
|
|
final public void flush ()
|
585 |
|
|
throws IOException
|
586 |
|
|
{
|
587 |
|
|
if (out != null)
|
588 |
|
|
out.flush ();
|
589 |
|
|
}
|
590 |
|
|
|
591 |
|
|
|
592 |
|
|
// convenience routines
|
593 |
|
|
|
594 |
|
|
// FIXME: probably want a subclass that holds a lot of these...
|
595 |
|
|
// and maybe more!
|
596 |
|
|
|
597 |
|
|
/**
|
598 |
|
|
* Writes the string as if characters() had been called on the contents
|
599 |
|
|
* of the string. This is particularly useful when applications act as
|
600 |
|
|
* producers and write data directly to event consumers.
|
601 |
|
|
*/
|
602 |
|
|
final public void write (String data)
|
603 |
|
|
throws SAXException
|
604 |
|
|
{
|
605 |
|
|
char buf [] = data.toCharArray ();
|
606 |
|
|
characters (buf, 0, buf.length);
|
607 |
|
|
}
|
608 |
|
|
|
609 |
|
|
|
610 |
|
|
/**
|
611 |
|
|
* Writes an element that has content consisting of a single string.
|
612 |
|
|
* @see #writeEmptyElement
|
613 |
|
|
* @see #startElement
|
614 |
|
|
*/
|
615 |
|
|
public void writeElement (
|
616 |
|
|
String uri,
|
617 |
|
|
String localName,
|
618 |
|
|
String qName,
|
619 |
|
|
Attributes atts,
|
620 |
|
|
String content
|
621 |
|
|
) throws SAXException
|
622 |
|
|
{
|
623 |
|
|
if (content == null || content.length () == 0) {
|
624 |
|
|
writeEmptyElement (uri, localName, qName, atts);
|
625 |
|
|
return;
|
626 |
|
|
}
|
627 |
|
|
startElement (uri, localName, qName, atts);
|
628 |
|
|
char chars [] = content.toCharArray ();
|
629 |
|
|
characters (chars, 0, chars.length);
|
630 |
|
|
endElement (uri, localName, qName);
|
631 |
|
|
}
|
632 |
|
|
|
633 |
|
|
|
634 |
|
|
/**
|
635 |
|
|
* Writes an element that has content consisting of a single integer,
|
636 |
|
|
* encoded as a decimal string.
|
637 |
|
|
* @see #writeEmptyElement
|
638 |
|
|
* @see #startElement
|
639 |
|
|
*/
|
640 |
|
|
public void writeElement (
|
641 |
|
|
String uri,
|
642 |
|
|
String localName,
|
643 |
|
|
String qName,
|
644 |
|
|
Attributes atts,
|
645 |
|
|
int content
|
646 |
|
|
) throws SAXException
|
647 |
|
|
{
|
648 |
|
|
writeElement (uri, localName, qName, atts, Integer.toString (content));
|
649 |
|
|
}
|
650 |
|
|
|
651 |
|
|
|
652 |
|
|
// SAX1 ContentHandler
|
653 |
|
|
/** <b>SAX1</b>: provides parser status information */
|
654 |
|
|
final public void setDocumentLocator (Locator l)
|
655 |
|
|
{
|
656 |
|
|
locator = l;
|
657 |
|
|
}
|
658 |
|
|
|
659 |
|
|
|
660 |
|
|
// URL for dtd that validates against all normal HTML constructs
|
661 |
|
|
private static final String xhtmlFullDTD =
|
662 |
|
|
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";
|
663 |
|
|
|
664 |
|
|
|
665 |
|
|
/**
|
666 |
|
|
* <b>SAX1</b>: indicates the beginning of a document parse.
|
667 |
|
|
* If you're writing (well formed) fragments of XML, neither
|
668 |
|
|
* this nor endDocument should be called.
|
669 |
|
|
*/
|
670 |
|
|
// NOT final
|
671 |
|
|
public void startDocument ()
|
672 |
|
|
throws SAXException
|
673 |
|
|
{
|
674 |
|
|
try {
|
675 |
|
|
if (out == null)
|
676 |
|
|
throw new IllegalStateException (
|
677 |
|
|
"null Writer given to XMLWriter");
|
678 |
|
|
|
679 |
|
|
// Not all parsers provide the locator we want; this also
|
680 |
|
|
// flags whether events are being sent to this object yet.
|
681 |
|
|
// We could only have this one call if we only printed whole
|
682 |
|
|
// documents ... but we also print fragments, so most of the
|
683 |
|
|
// callbacks here replicate this test.
|
684 |
|
|
|
685 |
|
|
if (locator == null)
|
686 |
|
|
locator = new LocatorImpl ();
|
687 |
|
|
|
688 |
|
|
// Unless the data is in US-ASCII or we're canonicalizing, write
|
689 |
|
|
// the XML declaration if we know the encoding. US-ASCII won't
|
690 |
|
|
// normally get mangled by web server confusion about the
|
691 |
|
|
// character encodings used. Plus, it's an easy way to
|
692 |
|
|
// ensure we can write ASCII that's unlikely to confuse
|
693 |
|
|
// elderly HTML parsers.
|
694 |
|
|
|
695 |
|
|
if (!canonical
|
696 |
|
|
&& dangerMask != (short) 0xff80
|
697 |
|
|
&& encoding != null) {
|
698 |
|
|
rawWrite ("<?xml version='1.0'");
|
699 |
|
|
rawWrite (" encoding='" + encoding + "'");
|
700 |
|
|
rawWrite ("?>");
|
701 |
|
|
newline ();
|
702 |
|
|
}
|
703 |
|
|
|
704 |
|
|
if (xhtml) {
|
705 |
|
|
|
706 |
|
|
rawWrite ("<!DOCTYPE html PUBLIC");
|
707 |
|
|
newline ();
|
708 |
|
|
rawWrite (" '-//W3C//DTD XHTML 1.0 Transitional//EN'");
|
709 |
|
|
newline ();
|
710 |
|
|
rawWrite (" '");
|
711 |
|
|
// NOTE: URL (above) matches the REC
|
712 |
|
|
rawWrite (xhtmlFullDTD);
|
713 |
|
|
rawWrite ("'>");
|
714 |
|
|
newline ();
|
715 |
|
|
newline ();
|
716 |
|
|
|
717 |
|
|
// fake the rest of the handler into ignoring
|
718 |
|
|
// everything until the root element, so any
|
719 |
|
|
// XHTML DTD comments, PIs, etc are ignored
|
720 |
|
|
startedDoctype = true;
|
721 |
|
|
}
|
722 |
|
|
|
723 |
|
|
entityNestLevel = 0;
|
724 |
|
|
|
725 |
|
|
} catch (IOException e) {
|
726 |
|
|
fatal ("can't write", e);
|
727 |
|
|
}
|
728 |
|
|
}
|
729 |
|
|
|
730 |
|
|
/**
|
731 |
|
|
* <b>SAX1</b>: indicates the completion of a parse.
|
732 |
|
|
* Note that all complete SAX event streams make this call, even
|
733 |
|
|
* if an error is reported during a parse.
|
734 |
|
|
*/
|
735 |
|
|
// NOT final
|
736 |
|
|
public void endDocument ()
|
737 |
|
|
throws SAXException
|
738 |
|
|
{
|
739 |
|
|
try {
|
740 |
|
|
if (!canonical) {
|
741 |
|
|
newline ();
|
742 |
|
|
newline ();
|
743 |
|
|
}
|
744 |
|
|
out.close ();
|
745 |
|
|
out = null;
|
746 |
|
|
locator = null;
|
747 |
|
|
} catch (IOException e) {
|
748 |
|
|
fatal ("can't write", e);
|
749 |
|
|
}
|
750 |
|
|
}
|
751 |
|
|
|
752 |
|
|
// XHTML elements declared as EMPTY print differently
|
753 |
|
|
final private static boolean isEmptyElementTag (String tag)
|
754 |
|
|
{
|
755 |
|
|
switch (tag.charAt (0)) {
|
756 |
|
|
case 'a': return "area".equals (tag);
|
757 |
|
|
case 'b': return "base".equals (tag)
|
758 |
|
|
|| "basefont".equals (tag)
|
759 |
|
|
|| "br".equals (tag);
|
760 |
|
|
case 'c': return "col".equals (tag);
|
761 |
|
|
case 'f': return "frame".equals (tag);
|
762 |
|
|
case 'h': return "hr".equals (tag);
|
763 |
|
|
case 'i': return "img".equals (tag)
|
764 |
|
|
|| "input".equals (tag)
|
765 |
|
|
|| "isindex".equals (tag);
|
766 |
|
|
case 'l': return "link".equals (tag);
|
767 |
|
|
case 'm': return "meta".equals (tag);
|
768 |
|
|
case 'p': return "param".equals (tag);
|
769 |
|
|
}
|
770 |
|
|
return false;
|
771 |
|
|
}
|
772 |
|
|
|
773 |
|
|
private static boolean indentBefore (String tag)
|
774 |
|
|
{
|
775 |
|
|
// basically indent before block content
|
776 |
|
|
// and within structure like tables, lists
|
777 |
|
|
switch (tag.charAt (0)) {
|
778 |
|
|
case 'a': return "applet".equals (tag);
|
779 |
|
|
case 'b': return "body".equals (tag)
|
780 |
|
|
|| "blockquote".equals (tag);
|
781 |
|
|
case 'c': return "center".equals (tag);
|
782 |
|
|
case 'f': return "frame".equals (tag)
|
783 |
|
|
|| "frameset".equals (tag);
|
784 |
|
|
case 'h': return "head".equals (tag);
|
785 |
|
|
case 'm': return "meta".equals (tag);
|
786 |
|
|
case 'o': return "object".equals (tag);
|
787 |
|
|
case 'p': return "param".equals (tag)
|
788 |
|
|
|| "pre".equals (tag);
|
789 |
|
|
case 's': return "style".equals (tag);
|
790 |
|
|
case 't': return "title".equals (tag)
|
791 |
|
|
|| "td".equals (tag)
|
792 |
|
|
|| "th".equals (tag);
|
793 |
|
|
}
|
794 |
|
|
// ... but not inline elements like "em", "b", "font"
|
795 |
|
|
return false;
|
796 |
|
|
}
|
797 |
|
|
|
798 |
|
|
private static boolean spaceBefore (String tag)
|
799 |
|
|
{
|
800 |
|
|
// blank line AND INDENT before certain structural content
|
801 |
|
|
switch (tag.charAt (0)) {
|
802 |
|
|
case 'h': return "h1".equals (tag)
|
803 |
|
|
|| "h2".equals (tag)
|
804 |
|
|
|| "h3".equals (tag)
|
805 |
|
|
|| "h4".equals (tag)
|
806 |
|
|
|| "h5".equals (tag)
|
807 |
|
|
|| "h6".equals (tag)
|
808 |
|
|
|| "hr".equals (tag);
|
809 |
|
|
case 'l': return "li".equals (tag);
|
810 |
|
|
case 'o': return "ol".equals (tag);
|
811 |
|
|
case 'p': return "p".equals (tag);
|
812 |
|
|
case 't': return "table".equals (tag)
|
813 |
|
|
|| "tr".equals (tag);
|
814 |
|
|
case 'u': return "ul".equals (tag);
|
815 |
|
|
}
|
816 |
|
|
return false;
|
817 |
|
|
}
|
818 |
|
|
|
819 |
|
|
// XHTML DTDs say these three have xml:space="preserve"
|
820 |
|
|
private static boolean spacePreserve (String tag)
|
821 |
|
|
{
|
822 |
|
|
return "pre".equals (tag)
|
823 |
|
|
|| "style".equals (tag)
|
824 |
|
|
|| "script".equals (tag);
|
825 |
|
|
}
|
826 |
|
|
|
827 |
|
|
/**
|
828 |
|
|
* <b>SAX2</b>: ignored.
|
829 |
|
|
*/
|
830 |
|
|
final public void startPrefixMapping (String prefix, String uri)
|
831 |
|
|
{}
|
832 |
|
|
|
833 |
|
|
/**
|
834 |
|
|
* <b>SAX2</b>: ignored.
|
835 |
|
|
*/
|
836 |
|
|
final public void endPrefixMapping (String prefix)
|
837 |
|
|
{}
|
838 |
|
|
|
839 |
|
|
private void writeStartTag (
|
840 |
|
|
String name,
|
841 |
|
|
Attributes atts,
|
842 |
|
|
boolean isEmpty
|
843 |
|
|
) throws SAXException, IOException
|
844 |
|
|
{
|
845 |
|
|
rawWrite ('<');
|
846 |
|
|
rawWrite (name);
|
847 |
|
|
|
848 |
|
|
// write out attributes ... sorting is particularly useful
|
849 |
|
|
// with output that's been heavily defaulted.
|
850 |
|
|
if (atts != null && atts.getLength () != 0) {
|
851 |
|
|
|
852 |
|
|
// Set up to write, with optional sorting
|
853 |
|
|
int indices [] = new int [atts.getLength ()];
|
854 |
|
|
|
855 |
|
|
for (int i= 0; i < indices.length; i++)
|
856 |
|
|
indices [i] = i;
|
857 |
|
|
|
858 |
|
|
// optionally sort
|
859 |
|
|
|
860 |
|
|
// FIXME: canon xml demands xmlns nodes go first,
|
861 |
|
|
// and sorting by URI first (empty first) then localname
|
862 |
|
|
// it should maybe use a different sort
|
863 |
|
|
|
864 |
|
|
if (canonical || prettyPrinting) {
|
865 |
|
|
|
866 |
|
|
// insertion sort by attribute name
|
867 |
|
|
for (int i = 1; i < indices.length; i++) {
|
868 |
|
|
int n = indices [i], j;
|
869 |
|
|
String s = atts.getQName (n);
|
870 |
|
|
|
871 |
|
|
for (j = i - 1; j >= 0; j--) {
|
872 |
|
|
if (s.compareTo (atts.getQName (indices [j]))
|
873 |
|
|
>= 0)
|
874 |
|
|
break;
|
875 |
|
|
indices [j + 1] = indices [j];
|
876 |
|
|
}
|
877 |
|
|
indices [j + 1] = n;
|
878 |
|
|
}
|
879 |
|
|
}
|
880 |
|
|
|
881 |
|
|
// write, sorted or no
|
882 |
|
|
for (int i= 0; i < indices.length; i++) {
|
883 |
|
|
String s = atts.getQName (indices [i]);
|
884 |
|
|
|
885 |
|
|
if (s == null || "".equals (s))
|
886 |
|
|
throw new IllegalArgumentException ("no XML name");
|
887 |
|
|
rawWrite (" ");
|
888 |
|
|
rawWrite (s);
|
889 |
|
|
rawWrite ("=");
|
890 |
|
|
writeQuotedValue (atts.getValue (indices [i]),
|
891 |
|
|
CTX_ATTRIBUTE);
|
892 |
|
|
}
|
893 |
|
|
}
|
894 |
|
|
if (isEmpty)
|
895 |
|
|
rawWrite (" /");
|
896 |
|
|
rawWrite ('>');
|
897 |
|
|
}
|
898 |
|
|
|
899 |
|
|
/**
|
900 |
|
|
* <b>SAX2</b>: indicates the start of an element.
|
901 |
|
|
* When XHTML is in use, avoid attribute values with
|
902 |
|
|
* line breaks or multiple whitespace characters, since
|
903 |
|
|
* not all user agents handle them correctly.
|
904 |
|
|
*/
|
905 |
|
|
final public void startElement (
|
906 |
|
|
String uri,
|
907 |
|
|
String localName,
|
908 |
|
|
String qName,
|
909 |
|
|
Attributes atts
|
910 |
|
|
) throws SAXException
|
911 |
|
|
{
|
912 |
|
|
startedDoctype = false;
|
913 |
|
|
|
914 |
|
|
if (locator == null)
|
915 |
|
|
locator = new LocatorImpl ();
|
916 |
|
|
|
917 |
|
|
if (qName == null || "".equals (qName))
|
918 |
|
|
throw new IllegalArgumentException ("no XML name");
|
919 |
|
|
|
920 |
|
|
try {
|
921 |
|
|
if (entityNestLevel != 0)
|
922 |
|
|
return;
|
923 |
|
|
if (prettyPrinting) {
|
924 |
|
|
String whitespace = null;
|
925 |
|
|
|
926 |
|
|
if (xhtml && spacePreserve (qName))
|
927 |
|
|
whitespace = "preserve";
|
928 |
|
|
else if (atts != null)
|
929 |
|
|
whitespace = atts.getValue ("xml:space");
|
930 |
|
|
if (whitespace == null)
|
931 |
|
|
whitespace = (String) space.peek ();
|
932 |
|
|
space.push (whitespace);
|
933 |
|
|
|
934 |
|
|
if ("default".equals (whitespace)) {
|
935 |
|
|
if (xhtml) {
|
936 |
|
|
if (spaceBefore (qName)) {
|
937 |
|
|
newline ();
|
938 |
|
|
doIndent ();
|
939 |
|
|
} else if (indentBefore (qName))
|
940 |
|
|
doIndent ();
|
941 |
|
|
// else it's inlined, modulo line length
|
942 |
|
|
// FIXME: incrementing element nest level
|
943 |
|
|
// for inlined elements causes ugliness
|
944 |
|
|
} else
|
945 |
|
|
doIndent ();
|
946 |
|
|
}
|
947 |
|
|
}
|
948 |
|
|
elementNestLevel++;
|
949 |
|
|
writeStartTag (qName, atts, xhtml && isEmptyElementTag (qName));
|
950 |
|
|
|
951 |
|
|
if (xhtml) {
|
952 |
|
|
// FIXME: if this is an XHTML "pre" element, turn
|
953 |
|
|
// off automatic wrapping.
|
954 |
|
|
}
|
955 |
|
|
|
956 |
|
|
} catch (IOException e) {
|
957 |
|
|
fatal ("can't write", e);
|
958 |
|
|
}
|
959 |
|
|
}
|
960 |
|
|
|
961 |
|
|
/**
|
962 |
|
|
* Writes an empty element.
|
963 |
|
|
* @see #startElement
|
964 |
|
|
*/
|
965 |
|
|
public void writeEmptyElement (
|
966 |
|
|
String uri,
|
967 |
|
|
String localName,
|
968 |
|
|
String qName,
|
969 |
|
|
Attributes atts
|
970 |
|
|
) throws SAXException
|
971 |
|
|
{
|
972 |
|
|
if (canonical) {
|
973 |
|
|
startElement (uri, localName, qName, atts);
|
974 |
|
|
endElement (uri, localName, qName);
|
975 |
|
|
} else {
|
976 |
|
|
try {
|
977 |
|
|
writeStartTag (qName, atts, true);
|
978 |
|
|
} catch (IOException e) {
|
979 |
|
|
fatal ("can't write", e);
|
980 |
|
|
}
|
981 |
|
|
}
|
982 |
|
|
}
|
983 |
|
|
|
984 |
|
|
|
985 |
|
|
/** <b>SAX2</b>: indicates the end of an element */
|
986 |
|
|
final public void endElement (String uri, String localName, String qName)
|
987 |
|
|
throws SAXException
|
988 |
|
|
{
|
989 |
|
|
if (qName == null || "".equals (qName))
|
990 |
|
|
throw new IllegalArgumentException ("no XML name");
|
991 |
|
|
|
992 |
|
|
try {
|
993 |
|
|
elementNestLevel--;
|
994 |
|
|
if (entityNestLevel != 0)
|
995 |
|
|
return;
|
996 |
|
|
if (xhtml && isEmptyElementTag (qName))
|
997 |
|
|
return;
|
998 |
|
|
rawWrite ("</");
|
999 |
|
|
rawWrite (qName);
|
1000 |
|
|
rawWrite ('>');
|
1001 |
|
|
|
1002 |
|
|
if (prettyPrinting) {
|
1003 |
|
|
if (!space.empty ())
|
1004 |
|
|
space.pop ();
|
1005 |
|
|
else
|
1006 |
|
|
fatal ("stack discipline", null);
|
1007 |
|
|
}
|
1008 |
|
|
if (elementNestLevel == 0)
|
1009 |
|
|
inEpilogue = true;
|
1010 |
|
|
|
1011 |
|
|
} catch (IOException e) {
|
1012 |
|
|
fatal ("can't write", e);
|
1013 |
|
|
}
|
1014 |
|
|
}
|
1015 |
|
|
|
1016 |
|
|
/** <b>SAX1</b>: reports content characters */
|
1017 |
|
|
final public void characters (char ch [], int start, int length)
|
1018 |
|
|
throws SAXException
|
1019 |
|
|
{
|
1020 |
|
|
if (locator == null)
|
1021 |
|
|
locator = new LocatorImpl ();
|
1022 |
|
|
|
1023 |
|
|
try {
|
1024 |
|
|
if (entityNestLevel != 0)
|
1025 |
|
|
return;
|
1026 |
|
|
if (inCDATA) {
|
1027 |
|
|
escapeChars (ch, start, length, CTX_UNPARSED);
|
1028 |
|
|
} else {
|
1029 |
|
|
escapeChars (ch, start, length, CTX_CONTENT);
|
1030 |
|
|
}
|
1031 |
|
|
} catch (IOException e) {
|
1032 |
|
|
fatal ("can't write", e);
|
1033 |
|
|
}
|
1034 |
|
|
}
|
1035 |
|
|
|
1036 |
|
|
/** <b>SAX1</b>: reports ignorable whitespace */
|
1037 |
|
|
final public void ignorableWhitespace (char ch [], int start, int length)
|
1038 |
|
|
throws SAXException
|
1039 |
|
|
{
|
1040 |
|
|
if (locator == null)
|
1041 |
|
|
locator = new LocatorImpl ();
|
1042 |
|
|
|
1043 |
|
|
try {
|
1044 |
|
|
if (entityNestLevel != 0)
|
1045 |
|
|
return;
|
1046 |
|
|
// don't forget to map NL to CRLF, CR, etc
|
1047 |
|
|
escapeChars (ch, start, length, CTX_CONTENT);
|
1048 |
|
|
} catch (IOException e) {
|
1049 |
|
|
fatal ("can't write", e);
|
1050 |
|
|
}
|
1051 |
|
|
}
|
1052 |
|
|
|
1053 |
|
|
/**
|
1054 |
|
|
* <b>SAX1</b>: reports a PI.
|
1055 |
|
|
* This doesn't check for illegal target names, such as "xml" or "XML",
|
1056 |
|
|
* or namespace-incompatible ones like "big:dog"; the caller is
|
1057 |
|
|
* responsible for ensuring those names are legal.
|
1058 |
|
|
*/
|
1059 |
|
|
final public void processingInstruction (String target, String data)
|
1060 |
|
|
throws SAXException
|
1061 |
|
|
{
|
1062 |
|
|
if (locator == null)
|
1063 |
|
|
locator = new LocatorImpl ();
|
1064 |
|
|
|
1065 |
|
|
// don't print internal subset for XHTML
|
1066 |
|
|
if (xhtml && startedDoctype)
|
1067 |
|
|
return;
|
1068 |
|
|
|
1069 |
|
|
// ancient HTML browsers might render these ... their loss.
|
1070 |
|
|
// to prevent: "if (xhtml) return;".
|
1071 |
|
|
|
1072 |
|
|
try {
|
1073 |
|
|
if (entityNestLevel != 0)
|
1074 |
|
|
return;
|
1075 |
|
|
if (canonical && inEpilogue)
|
1076 |
|
|
newline ();
|
1077 |
|
|
rawWrite ("<?");
|
1078 |
|
|
rawWrite (target);
|
1079 |
|
|
rawWrite (' ');
|
1080 |
|
|
escapeChars (data.toCharArray (), -1, -1, CTX_UNPARSED);
|
1081 |
|
|
rawWrite ("?>");
|
1082 |
|
|
if (elementNestLevel == 0 && !(canonical && inEpilogue))
|
1083 |
|
|
newline ();
|
1084 |
|
|
} catch (IOException e) {
|
1085 |
|
|
fatal ("can't write", e);
|
1086 |
|
|
}
|
1087 |
|
|
}
|
1088 |
|
|
|
1089 |
|
|
/** <b>SAX1</b>: indicates a non-expanded entity reference */
|
1090 |
|
|
public void skippedEntity (String name)
|
1091 |
|
|
throws SAXException
|
1092 |
|
|
{
|
1093 |
|
|
try {
|
1094 |
|
|
rawWrite ("&");
|
1095 |
|
|
rawWrite (name);
|
1096 |
|
|
rawWrite (";");
|
1097 |
|
|
} catch (IOException e) {
|
1098 |
|
|
fatal ("can't write", e);
|
1099 |
|
|
}
|
1100 |
|
|
}
|
1101 |
|
|
|
1102 |
|
|
// SAX2 LexicalHandler
|
1103 |
|
|
|
1104 |
|
|
/** <b>SAX2</b>: called before parsing CDATA characters */
|
1105 |
|
|
final public void startCDATA ()
|
1106 |
|
|
throws SAXException
|
1107 |
|
|
{
|
1108 |
|
|
if (locator == null)
|
1109 |
|
|
locator = new LocatorImpl ();
|
1110 |
|
|
|
1111 |
|
|
if (canonical)
|
1112 |
|
|
return;
|
1113 |
|
|
|
1114 |
|
|
try {
|
1115 |
|
|
inCDATA = true;
|
1116 |
|
|
if (entityNestLevel == 0)
|
1117 |
|
|
rawWrite ("<![CDATA[");
|
1118 |
|
|
} catch (IOException e) {
|
1119 |
|
|
fatal ("can't write", e);
|
1120 |
|
|
}
|
1121 |
|
|
}
|
1122 |
|
|
|
1123 |
|
|
/** <b>SAX2</b>: called after parsing CDATA characters */
|
1124 |
|
|
final public void endCDATA ()
|
1125 |
|
|
throws SAXException
|
1126 |
|
|
{
|
1127 |
|
|
if (canonical)
|
1128 |
|
|
return;
|
1129 |
|
|
|
1130 |
|
|
try {
|
1131 |
|
|
inCDATA = false;
|
1132 |
|
|
if (entityNestLevel == 0)
|
1133 |
|
|
rawWrite ("]]>");
|
1134 |
|
|
} catch (IOException e) {
|
1135 |
|
|
fatal ("can't write", e);
|
1136 |
|
|
}
|
1137 |
|
|
}
|
1138 |
|
|
|
1139 |
|
|
/**
|
1140 |
|
|
* <b>SAX2</b>: called when the doctype is partially parsed
|
1141 |
|
|
* Note that this, like other doctype related calls, is ignored
|
1142 |
|
|
* when XHTML is in use.
|
1143 |
|
|
*/
|
1144 |
|
|
final public void startDTD (String name, String publicId, String systemId)
|
1145 |
|
|
throws SAXException
|
1146 |
|
|
{
|
1147 |
|
|
if (locator == null)
|
1148 |
|
|
locator = new LocatorImpl ();
|
1149 |
|
|
if (xhtml)
|
1150 |
|
|
return;
|
1151 |
|
|
try {
|
1152 |
|
|
inDoctype = startedDoctype = true;
|
1153 |
|
|
if (canonical)
|
1154 |
|
|
return;
|
1155 |
|
|
rawWrite ("<!DOCTYPE ");
|
1156 |
|
|
rawWrite (name);
|
1157 |
|
|
rawWrite (' ');
|
1158 |
|
|
|
1159 |
|
|
if (!expandingEntities) {
|
1160 |
|
|
if (publicId != null)
|
1161 |
|
|
rawWrite ("PUBLIC '" + publicId + "' '" + systemId + "' ");
|
1162 |
|
|
else if (systemId != null)
|
1163 |
|
|
rawWrite ("SYSTEM '" + systemId + "' ");
|
1164 |
|
|
}
|
1165 |
|
|
|
1166 |
|
|
rawWrite ('[');
|
1167 |
|
|
newline ();
|
1168 |
|
|
} catch (IOException e) {
|
1169 |
|
|
fatal ("can't write", e);
|
1170 |
|
|
}
|
1171 |
|
|
}
|
1172 |
|
|
|
1173 |
|
|
/** <b>SAX2</b>: called after the doctype is parsed */
|
1174 |
|
|
final public void endDTD ()
|
1175 |
|
|
throws SAXException
|
1176 |
|
|
{
|
1177 |
|
|
inDoctype = false;
|
1178 |
|
|
if (canonical || xhtml)
|
1179 |
|
|
return;
|
1180 |
|
|
try {
|
1181 |
|
|
rawWrite ("]>");
|
1182 |
|
|
newline ();
|
1183 |
|
|
} catch (IOException e) {
|
1184 |
|
|
fatal ("can't write", e);
|
1185 |
|
|
}
|
1186 |
|
|
}
|
1187 |
|
|
|
1188 |
|
|
/**
|
1189 |
|
|
* <b>SAX2</b>: called before parsing a general entity in content
|
1190 |
|
|
*/
|
1191 |
|
|
final public void startEntity (String name)
|
1192 |
|
|
throws SAXException
|
1193 |
|
|
{
|
1194 |
|
|
try {
|
1195 |
|
|
boolean writeEOL = true;
|
1196 |
|
|
|
1197 |
|
|
// Predefined XHTML entities (for characters) will get
|
1198 |
|
|
// mapped back later.
|
1199 |
|
|
if (xhtml || expandingEntities)
|
1200 |
|
|
return;
|
1201 |
|
|
|
1202 |
|
|
entityNestLevel++;
|
1203 |
|
|
if (name.equals ("[dtd]"))
|
1204 |
|
|
return;
|
1205 |
|
|
if (entityNestLevel != 1)
|
1206 |
|
|
return;
|
1207 |
|
|
if (!name.startsWith ("%")) {
|
1208 |
|
|
writeEOL = false;
|
1209 |
|
|
rawWrite ('&');
|
1210 |
|
|
}
|
1211 |
|
|
rawWrite (name);
|
1212 |
|
|
rawWrite (';');
|
1213 |
|
|
if (writeEOL)
|
1214 |
|
|
newline ();
|
1215 |
|
|
} catch (IOException e) {
|
1216 |
|
|
fatal ("can't write", e);
|
1217 |
|
|
}
|
1218 |
|
|
}
|
1219 |
|
|
|
1220 |
|
|
/**
|
1221 |
|
|
* <b>SAX2</b>: called after parsing a general entity in content
|
1222 |
|
|
*/
|
1223 |
|
|
final public void endEntity (String name)
|
1224 |
|
|
throws SAXException
|
1225 |
|
|
{
|
1226 |
|
|
if (xhtml || expandingEntities)
|
1227 |
|
|
return;
|
1228 |
|
|
entityNestLevel--;
|
1229 |
|
|
}
|
1230 |
|
|
|
1231 |
|
|
/**
|
1232 |
|
|
* <b>SAX2</b>: called when comments are parsed.
|
1233 |
|
|
* When XHTML is used, the old HTML tradition of using comments
|
1234 |
|
|
* to for inline CSS, or for JavaScript code is discouraged.
|
1235 |
|
|
* This is because XML processors are encouraged to discard, on
|
1236 |
|
|
* the grounds that comments are for users (and perhaps text
|
1237 |
|
|
* editors) not programs. Instead, use external scripts
|
1238 |
|
|
*/
|
1239 |
|
|
final public void comment (char ch [], int start, int length)
|
1240 |
|
|
throws SAXException
|
1241 |
|
|
{
|
1242 |
|
|
if (locator == null)
|
1243 |
|
|
locator = new LocatorImpl ();
|
1244 |
|
|
|
1245 |
|
|
// don't print internal subset for XHTML
|
1246 |
|
|
if (xhtml && startedDoctype)
|
1247 |
|
|
return;
|
1248 |
|
|
// don't print comment in doctype for canon xml
|
1249 |
|
|
if (canonical && inDoctype)
|
1250 |
|
|
return;
|
1251 |
|
|
|
1252 |
|
|
try {
|
1253 |
|
|
boolean indent;
|
1254 |
|
|
|
1255 |
|
|
if (prettyPrinting && space.empty ())
|
1256 |
|
|
fatal ("stack discipline", null);
|
1257 |
|
|
indent = prettyPrinting && "default".equals (space.peek ());
|
1258 |
|
|
if (entityNestLevel != 0)
|
1259 |
|
|
return;
|
1260 |
|
|
if (indent)
|
1261 |
|
|
doIndent ();
|
1262 |
|
|
if (canonical && inEpilogue)
|
1263 |
|
|
newline ();
|
1264 |
|
|
rawWrite ("<!--");
|
1265 |
|
|
escapeChars (ch, start, length, CTX_UNPARSED);
|
1266 |
|
|
rawWrite ("-->");
|
1267 |
|
|
if (indent)
|
1268 |
|
|
doIndent ();
|
1269 |
|
|
if (elementNestLevel == 0 && !(canonical && inEpilogue))
|
1270 |
|
|
newline ();
|
1271 |
|
|
} catch (IOException e) {
|
1272 |
|
|
fatal ("can't write", e);
|
1273 |
|
|
}
|
1274 |
|
|
}
|
1275 |
|
|
|
1276 |
|
|
// SAX1 DTDHandler
|
1277 |
|
|
|
1278 |
|
|
/** <b>SAX1</b>: called on notation declarations */
|
1279 |
|
|
final public void notationDecl (String name,
|
1280 |
|
|
String publicId, String systemId)
|
1281 |
|
|
throws SAXException
|
1282 |
|
|
{
|
1283 |
|
|
if (xhtml)
|
1284 |
|
|
return;
|
1285 |
|
|
try {
|
1286 |
|
|
// At this time, only SAX2 callbacks start these.
|
1287 |
|
|
if (!startedDoctype)
|
1288 |
|
|
return;
|
1289 |
|
|
|
1290 |
|
|
if (entityNestLevel != 0)
|
1291 |
|
|
return;
|
1292 |
|
|
rawWrite ("<!NOTATION " + name + " ");
|
1293 |
|
|
if (publicId != null)
|
1294 |
|
|
rawWrite ("PUBLIC \"" + publicId + '"');
|
1295 |
|
|
else
|
1296 |
|
|
rawWrite ("SYSTEM ");
|
1297 |
|
|
if (systemId != null)
|
1298 |
|
|
rawWrite ('"' + systemId + '"');
|
1299 |
|
|
rawWrite (">");
|
1300 |
|
|
newline ();
|
1301 |
|
|
} catch (IOException e) {
|
1302 |
|
|
fatal ("can't write", e);
|
1303 |
|
|
}
|
1304 |
|
|
}
|
1305 |
|
|
|
1306 |
|
|
/** <b>SAX1</b>: called on unparsed entity declarations */
|
1307 |
|
|
final public void unparsedEntityDecl (String name,
|
1308 |
|
|
String publicId, String systemId,
|
1309 |
|
|
String notationName)
|
1310 |
|
|
throws SAXException
|
1311 |
|
|
{
|
1312 |
|
|
if (xhtml)
|
1313 |
|
|
return;
|
1314 |
|
|
try {
|
1315 |
|
|
// At this time, only SAX2 callbacks start these.
|
1316 |
|
|
if (!startedDoctype) {
|
1317 |
|
|
// FIXME: write to temporary buffer, and make the start
|
1318 |
|
|
// of the root element write these declarations.
|
1319 |
|
|
return;
|
1320 |
|
|
}
|
1321 |
|
|
|
1322 |
|
|
if (entityNestLevel != 0)
|
1323 |
|
|
return;
|
1324 |
|
|
rawWrite ("<!ENTITY " + name + " ");
|
1325 |
|
|
if (publicId != null)
|
1326 |
|
|
rawWrite ("PUBLIC \"" + publicId + '"');
|
1327 |
|
|
else
|
1328 |
|
|
rawWrite ("SYSTEM ");
|
1329 |
|
|
rawWrite ('"' + systemId + '"');
|
1330 |
|
|
rawWrite (" NDATA " + notationName + ">");
|
1331 |
|
|
newline ();
|
1332 |
|
|
} catch (IOException e) {
|
1333 |
|
|
fatal ("can't write", e);
|
1334 |
|
|
}
|
1335 |
|
|
}
|
1336 |
|
|
|
1337 |
|
|
// SAX2 DeclHandler
|
1338 |
|
|
|
1339 |
|
|
/** <b>SAX2</b>: called on attribute declarations */
|
1340 |
|
|
final public void attributeDecl (String eName, String aName,
|
1341 |
|
|
String type, String mode, String value)
|
1342 |
|
|
throws SAXException
|
1343 |
|
|
{
|
1344 |
|
|
if (xhtml)
|
1345 |
|
|
return;
|
1346 |
|
|
try {
|
1347 |
|
|
// At this time, only SAX2 callbacks start these.
|
1348 |
|
|
if (!startedDoctype)
|
1349 |
|
|
return;
|
1350 |
|
|
if (entityNestLevel != 0)
|
1351 |
|
|
return;
|
1352 |
|
|
rawWrite ("<!ATTLIST " + eName + ' ' + aName + ' ');
|
1353 |
|
|
rawWrite (type);
|
1354 |
|
|
rawWrite (' ');
|
1355 |
|
|
if (mode != null)
|
1356 |
|
|
rawWrite (mode + ' ');
|
1357 |
|
|
if (value != null)
|
1358 |
|
|
writeQuotedValue (value, CTX_ATTRIBUTE);
|
1359 |
|
|
rawWrite ('>');
|
1360 |
|
|
newline ();
|
1361 |
|
|
} catch (IOException e) {
|
1362 |
|
|
fatal ("can't write", e);
|
1363 |
|
|
}
|
1364 |
|
|
}
|
1365 |
|
|
|
1366 |
|
|
/** <b>SAX2</b>: called on element declarations */
|
1367 |
|
|
final public void elementDecl (String name, String model)
|
1368 |
|
|
throws SAXException
|
1369 |
|
|
{
|
1370 |
|
|
if (xhtml)
|
1371 |
|
|
return;
|
1372 |
|
|
try {
|
1373 |
|
|
// At this time, only SAX2 callbacks start these.
|
1374 |
|
|
if (!startedDoctype)
|
1375 |
|
|
return;
|
1376 |
|
|
if (entityNestLevel != 0)
|
1377 |
|
|
return;
|
1378 |
|
|
rawWrite ("<!ELEMENT " + name + ' ' + model + '>');
|
1379 |
|
|
newline ();
|
1380 |
|
|
} catch (IOException e) {
|
1381 |
|
|
fatal ("can't write", e);
|
1382 |
|
|
}
|
1383 |
|
|
}
|
1384 |
|
|
|
1385 |
|
|
/** <b>SAX2</b>: called on external entity declarations */
|
1386 |
|
|
final public void externalEntityDecl (
|
1387 |
|
|
String name,
|
1388 |
|
|
String publicId,
|
1389 |
|
|
String systemId)
|
1390 |
|
|
throws SAXException
|
1391 |
|
|
{
|
1392 |
|
|
if (xhtml)
|
1393 |
|
|
return;
|
1394 |
|
|
try {
|
1395 |
|
|
// At this time, only SAX2 callbacks start these.
|
1396 |
|
|
if (!startedDoctype)
|
1397 |
|
|
return;
|
1398 |
|
|
if (entityNestLevel != 0)
|
1399 |
|
|
return;
|
1400 |
|
|
rawWrite ("<!ENTITY ");
|
1401 |
|
|
if (name.startsWith ("%")) {
|
1402 |
|
|
rawWrite ("% ");
|
1403 |
|
|
rawWrite (name.substring (1));
|
1404 |
|
|
} else
|
1405 |
|
|
rawWrite (name);
|
1406 |
|
|
if (publicId != null)
|
1407 |
|
|
rawWrite (" PUBLIC \"" + publicId + '"');
|
1408 |
|
|
else
|
1409 |
|
|
rawWrite (" SYSTEM ");
|
1410 |
|
|
rawWrite ('"' + systemId + "\">");
|
1411 |
|
|
newline ();
|
1412 |
|
|
} catch (IOException e) {
|
1413 |
|
|
fatal ("can't write", e);
|
1414 |
|
|
}
|
1415 |
|
|
}
|
1416 |
|
|
|
1417 |
|
|
/** <b>SAX2</b>: called on internal entity declarations */
|
1418 |
|
|
final public void internalEntityDecl (String name, String value)
|
1419 |
|
|
throws SAXException
|
1420 |
|
|
{
|
1421 |
|
|
if (xhtml)
|
1422 |
|
|
return;
|
1423 |
|
|
try {
|
1424 |
|
|
// At this time, only SAX2 callbacks start these.
|
1425 |
|
|
if (!startedDoctype)
|
1426 |
|
|
return;
|
1427 |
|
|
if (entityNestLevel != 0)
|
1428 |
|
|
return;
|
1429 |
|
|
rawWrite ("<!ENTITY ");
|
1430 |
|
|
if (name.startsWith ("%")) {
|
1431 |
|
|
rawWrite ("% ");
|
1432 |
|
|
rawWrite (name.substring (1));
|
1433 |
|
|
} else
|
1434 |
|
|
rawWrite (name);
|
1435 |
|
|
rawWrite (' ');
|
1436 |
|
|
writeQuotedValue (value, CTX_ENTITY);
|
1437 |
|
|
rawWrite ('>');
|
1438 |
|
|
newline ();
|
1439 |
|
|
} catch (IOException e) {
|
1440 |
|
|
fatal ("can't write", e);
|
1441 |
|
|
}
|
1442 |
|
|
}
|
1443 |
|
|
|
1444 |
|
|
private void writeQuotedValue (String value, int code)
|
1445 |
|
|
throws SAXException, IOException
|
1446 |
|
|
{
|
1447 |
|
|
char buf [] = value.toCharArray ();
|
1448 |
|
|
int off = 0, len = buf.length;
|
1449 |
|
|
|
1450 |
|
|
// we can't add line breaks to attribute/entity/... values
|
1451 |
|
|
noWrap = true;
|
1452 |
|
|
rawWrite ('"');
|
1453 |
|
|
escapeChars (buf, off, len, code);
|
1454 |
|
|
rawWrite ('"');
|
1455 |
|
|
noWrap = false;
|
1456 |
|
|
}
|
1457 |
|
|
|
1458 |
|
|
// From "HTMLlat1x.ent" ... names of entities for ISO-8859-1
|
1459 |
|
|
// (Latin/1) characters, all codes: 160-255 (0xA0-0xFF).
|
1460 |
|
|
// Codes 128-159 have no assigned values.
|
1461 |
|
|
private static final String HTMLlat1x [] = {
|
1462 |
|
|
// 160
|
1463 |
|
|
"nbsp", "iexcl", "cent", "pound", "curren",
|
1464 |
|
|
"yen", "brvbar", "sect", "uml", "copy",
|
1465 |
|
|
|
1466 |
|
|
// 170
|
1467 |
|
|
"ordf", "laquo", "not", "shy", "reg",
|
1468 |
|
|
"macr", "deg", "plusmn", "sup2", "sup3",
|
1469 |
|
|
|
1470 |
|
|
// 180
|
1471 |
|
|
"acute", "micro", "para", "middot", "cedil",
|
1472 |
|
|
"sup1", "ordm", "raquo", "frac14", "frac12",
|
1473 |
|
|
|
1474 |
|
|
// 190
|
1475 |
|
|
"frac34", "iquest", "Agrave", "Aacute", "Acirc",
|
1476 |
|
|
"Atilde", "Auml", "Aring", "AElig", "Ccedil",
|
1477 |
|
|
|
1478 |
|
|
// 200
|
1479 |
|
|
"Egrave", "Eacute", "Ecirc", "Euml", "Igrave",
|
1480 |
|
|
"Iacute", "Icirc", "Iuml", "ETH", "Ntilde",
|
1481 |
|
|
|
1482 |
|
|
// 210
|
1483 |
|
|
"Ograve", "Oacute", "Ocirc", "Otilde", "Ouml",
|
1484 |
|
|
"times", "Oslash", "Ugrave", "Uacute", "Ucirc",
|
1485 |
|
|
|
1486 |
|
|
// 220
|
1487 |
|
|
"Uuml", "Yacute", "THORN", "szlig", "agrave",
|
1488 |
|
|
"aacute", "acirc", "atilde", "auml", "aring",
|
1489 |
|
|
|
1490 |
|
|
// 230
|
1491 |
|
|
"aelig", "ccedil", "egrave", "eacute", "ecirc",
|
1492 |
|
|
"euml", "igrave", "iacute", "icirc", "iuml",
|
1493 |
|
|
|
1494 |
|
|
// 240
|
1495 |
|
|
"eth", "ntilde", "ograve", "oacute", "ocirc",
|
1496 |
|
|
"otilde", "ouml", "divide", "oslash", "ugrave",
|
1497 |
|
|
|
1498 |
|
|
// 250
|
1499 |
|
|
"uacute", "ucirc", "uuml", "yacute", "thorn",
|
1500 |
|
|
"yuml"
|
1501 |
|
|
};
|
1502 |
|
|
|
1503 |
|
|
// From "HTMLsymbolx.ent" ... some of the symbols that
|
1504 |
|
|
// we can conveniently handle. Entities for the Greek.
|
1505 |
|
|
// alphabet (upper and lower cases) are compact.
|
1506 |
|
|
private static final String HTMLsymbolx_GR [] = {
|
1507 |
|
|
// 913
|
1508 |
|
|
"Alpha", "Beta", "Gamma", "Delta", "Epsilon",
|
1509 |
|
|
"Zeta", "Eta", "Theta", "Iota", "Kappa",
|
1510 |
|
|
|
1511 |
|
|
// 923
|
1512 |
|
|
"Lambda", "Mu", "Nu", "Xi", "Omicron",
|
1513 |
|
|
"Pi", "Rho", null, "Sigma", "Tau",
|
1514 |
|
|
|
1515 |
|
|
// 933
|
1516 |
|
|
"Upsilon", "Phi", "Chi", "Psi", "Omega"
|
1517 |
|
|
};
|
1518 |
|
|
|
1519 |
|
|
private static final String HTMLsymbolx_gr [] = {
|
1520 |
|
|
// 945
|
1521 |
|
|
"alpha", "beta", "gamma", "delta", "epsilon",
|
1522 |
|
|
"zeta", "eta", "theta", "iota", "kappa",
|
1523 |
|
|
|
1524 |
|
|
// 955
|
1525 |
|
|
"lambda", "mu", "nu", "xi", "omicron",
|
1526 |
|
|
"pi", "rho", "sigmaf", "sigma", "tau",
|
1527 |
|
|
|
1528 |
|
|
// 965
|
1529 |
|
|
"upsilon", "phi", "chi", "psi", "omega"
|
1530 |
|
|
};
|
1531 |
|
|
|
1532 |
|
|
|
1533 |
|
|
// General routine to write text and substitute predefined
|
1534 |
|
|
// entities (XML, and a special case for XHTML) as needed.
|
1535 |
|
|
private void escapeChars (char buf [], int off, int len, int code)
|
1536 |
|
|
throws SAXException, IOException
|
1537 |
|
|
{
|
1538 |
|
|
int first = 0;
|
1539 |
|
|
|
1540 |
|
|
if (off < 0) {
|
1541 |
|
|
off = 0;
|
1542 |
|
|
len = buf.length;
|
1543 |
|
|
}
|
1544 |
|
|
for (int i = 0; i < len; i++) {
|
1545 |
|
|
String esc;
|
1546 |
|
|
char c = buf [off + i];
|
1547 |
|
|
|
1548 |
|
|
switch (c) {
|
1549 |
|
|
// Note that CTX_ATTRIBUTE isn't explicitly tested here;
|
1550 |
|
|
// all syntax delimiters are escaped in CTX_ATTRIBUTE,
|
1551 |
|
|
// otherwise it's similar to CTX_CONTENT
|
1552 |
|
|
|
1553 |
|
|
// ampersand flags entity references; entity replacement
|
1554 |
|
|
// text has unexpanded references, other text doesn't.
|
1555 |
|
|
case '&':
|
1556 |
|
|
if (code == CTX_ENTITY || code == CTX_UNPARSED)
|
1557 |
|
|
continue;
|
1558 |
|
|
esc = "amp";
|
1559 |
|
|
break;
|
1560 |
|
|
|
1561 |
|
|
// attributes and text may NOT have literal '<', but
|
1562 |
|
|
// entities may have markup constructs
|
1563 |
|
|
case '<':
|
1564 |
|
|
if (code == CTX_ENTITY || code == CTX_UNPARSED)
|
1565 |
|
|
continue;
|
1566 |
|
|
esc = "lt";
|
1567 |
|
|
break;
|
1568 |
|
|
|
1569 |
|
|
// as above re markup constructs; but otherwise
|
1570 |
|
|
// except when canonicalizing, this is for consistency
|
1571 |
|
|
case '>':
|
1572 |
|
|
if (code == CTX_ENTITY || code == CTX_UNPARSED)
|
1573 |
|
|
continue;
|
1574 |
|
|
esc = "gt";
|
1575 |
|
|
break;
|
1576 |
|
|
case '\'':
|
1577 |
|
|
if (code == CTX_CONTENT || code == CTX_UNPARSED)
|
1578 |
|
|
continue;
|
1579 |
|
|
if (canonical)
|
1580 |
|
|
continue;
|
1581 |
|
|
esc = "apos";
|
1582 |
|
|
break;
|
1583 |
|
|
|
1584 |
|
|
// needed when printing quoted attribute/entity values
|
1585 |
|
|
case '"':
|
1586 |
|
|
if (code == CTX_CONTENT || code == CTX_UNPARSED)
|
1587 |
|
|
continue;
|
1588 |
|
|
esc = "quot";
|
1589 |
|
|
break;
|
1590 |
|
|
|
1591 |
|
|
// make line ends work per host OS convention
|
1592 |
|
|
case '\n':
|
1593 |
|
|
esc = eol;
|
1594 |
|
|
break;
|
1595 |
|
|
|
1596 |
|
|
//
|
1597 |
|
|
// No other characters NEED special treatment ... except
|
1598 |
|
|
// for encoding-specific issues, like whether the character
|
1599 |
|
|
// can really be represented in that encoding.
|
1600 |
|
|
//
|
1601 |
|
|
default:
|
1602 |
|
|
//
|
1603 |
|
|
// There are characters we can never write safely; getting
|
1604 |
|
|
// them is an error.
|
1605 |
|
|
//
|
1606 |
|
|
// (a) They're never legal in XML ... detected by range
|
1607 |
|
|
// checks, and (eventually) by remerging surrogate
|
1608 |
|
|
// pairs on output. (Easy error for apps to prevent.)
|
1609 |
|
|
//
|
1610 |
|
|
// (b) This encoding can't represent them, and we
|
1611 |
|
|
// can't make reference substitution (e.g. inside
|
1612 |
|
|
// CDATA sections, names, PI data, etc). (Hard for
|
1613 |
|
|
// apps to prevent, except by using UTF-8 or UTF-16
|
1614 |
|
|
// as their output encoding.)
|
1615 |
|
|
//
|
1616 |
|
|
// We know a very little bit about what characters
|
1617 |
|
|
// the US-ASCII and ISO-8859-1 encodings support. For
|
1618 |
|
|
// other encodings we can't detect the second type of
|
1619 |
|
|
// error at all. (Never an issue for UTF-8 or UTF-16.)
|
1620 |
|
|
//
|
1621 |
|
|
|
1622 |
|
|
// FIXME: CR in CDATA is an error; in text, turn to a char ref
|
1623 |
|
|
|
1624 |
|
|
// FIXME: CR/LF/TAB in attributes should become char refs
|
1625 |
|
|
|
1626 |
|
|
if ((c > 0xfffd)
|
1627 |
|
|
|| ((c < 0x0020) && !((c == 0x0009)
|
1628 |
|
|
|| (c == 0x000A) || (c == 0x000D)))
|
1629 |
|
|
|| (((c & dangerMask) != 0)
|
1630 |
|
|
&& (code == CTX_UNPARSED))) {
|
1631 |
|
|
|
1632 |
|
|
// if case (b) in CDATA, we might end the section,
|
1633 |
|
|
// write a reference, then restart ... possible
|
1634 |
|
|
// in one DOM L3 draft.
|
1635 |
|
|
|
1636 |
|
|
throw new CharConversionException (
|
1637 |
|
|
"Illegal or non-writable character: U+"
|
1638 |
|
|
+ Integer.toHexString (c));
|
1639 |
|
|
}
|
1640 |
|
|
|
1641 |
|
|
//
|
1642 |
|
|
// If the output encoding represents the character
|
1643 |
|
|
// directly, let it do so! Else we'll escape it.
|
1644 |
|
|
//
|
1645 |
|
|
if ((c & dangerMask) == 0)
|
1646 |
|
|
continue;
|
1647 |
|
|
esc = null;
|
1648 |
|
|
|
1649 |
|
|
// Avoid numeric refs where symbolic ones exist, as
|
1650 |
|
|
// symbolic ones make more sense to humans reading!
|
1651 |
|
|
if (xhtml) {
|
1652 |
|
|
// all the HTMLlat1x.ent entities
|
1653 |
|
|
// (all the "ISO-8859-1" characters)
|
1654 |
|
|
if (c >= 160 && c <= 255)
|
1655 |
|
|
esc = HTMLlat1x [c - 160];
|
1656 |
|
|
|
1657 |
|
|
// not quite half the HTMLsymbolx.ent entities
|
1658 |
|
|
else if (c >= 913 && c <= 937)
|
1659 |
|
|
esc = HTMLsymbolx_GR [c - 913];
|
1660 |
|
|
else if (c >= 945 && c <= 969)
|
1661 |
|
|
esc = HTMLsymbolx_gr [c - 945];
|
1662 |
|
|
|
1663 |
|
|
else switch (c) {
|
1664 |
|
|
// all of the HTMLspecialx.ent entities
|
1665 |
|
|
case 338: esc = "OElig"; break;
|
1666 |
|
|
case 339: esc = "oelig"; break;
|
1667 |
|
|
case 352: esc = "Scaron"; break;
|
1668 |
|
|
case 353: esc = "scaron"; break;
|
1669 |
|
|
case 376: esc = "Yuml"; break;
|
1670 |
|
|
case 710: esc = "circ"; break;
|
1671 |
|
|
case 732: esc = "tilde"; break;
|
1672 |
|
|
case 8194: esc = "ensp"; break;
|
1673 |
|
|
case 8195: esc = "emsp"; break;
|
1674 |
|
|
case 8201: esc = "thinsp"; break;
|
1675 |
|
|
case 8204: esc = "zwnj"; break;
|
1676 |
|
|
case 8205: esc = "zwj"; break;
|
1677 |
|
|
case 8206: esc = "lrm"; break;
|
1678 |
|
|
case 8207: esc = "rlm"; break;
|
1679 |
|
|
case 8211: esc = "ndash"; break;
|
1680 |
|
|
case 8212: esc = "mdash"; break;
|
1681 |
|
|
case 8216: esc = "lsquo"; break;
|
1682 |
|
|
case 8217: esc = "rsquo"; break;
|
1683 |
|
|
case 8218: esc = "sbquo"; break;
|
1684 |
|
|
case 8220: esc = "ldquo"; break;
|
1685 |
|
|
case 8221: esc = "rdquo"; break;
|
1686 |
|
|
case 8222: esc = "bdquo"; break;
|
1687 |
|
|
case 8224: esc = "dagger"; break;
|
1688 |
|
|
case 8225: esc = "Dagger"; break;
|
1689 |
|
|
case 8240: esc = "permil"; break;
|
1690 |
|
|
case 8249: esc = "lsaquo"; break;
|
1691 |
|
|
case 8250: esc = "rsaquo"; break;
|
1692 |
|
|
case 8364: esc = "euro"; break;
|
1693 |
|
|
|
1694 |
|
|
// the other HTMLsymbox.ent entities
|
1695 |
|
|
case 402: esc = "fnof"; break;
|
1696 |
|
|
case 977: esc = "thetasym"; break;
|
1697 |
|
|
case 978: esc = "upsih"; break;
|
1698 |
|
|
case 982: esc = "piv"; break;
|
1699 |
|
|
case 8226: esc = "bull"; break;
|
1700 |
|
|
case 8230: esc = "hellip"; break;
|
1701 |
|
|
case 8242: esc = "prime"; break;
|
1702 |
|
|
case 8243: esc = "Prime"; break;
|
1703 |
|
|
case 8254: esc = "oline"; break;
|
1704 |
|
|
case 8260: esc = "frasl"; break;
|
1705 |
|
|
case 8472: esc = "weierp"; break;
|
1706 |
|
|
case 8465: esc = "image"; break;
|
1707 |
|
|
case 8476: esc = "real"; break;
|
1708 |
|
|
case 8482: esc = "trade"; break;
|
1709 |
|
|
case 8501: esc = "alefsym"; break;
|
1710 |
|
|
case 8592: esc = "larr"; break;
|
1711 |
|
|
case 8593: esc = "uarr"; break;
|
1712 |
|
|
case 8594: esc = "rarr"; break;
|
1713 |
|
|
case 8595: esc = "darr"; break;
|
1714 |
|
|
case 8596: esc = "harr"; break;
|
1715 |
|
|
case 8629: esc = "crarr"; break;
|
1716 |
|
|
case 8656: esc = "lArr"; break;
|
1717 |
|
|
case 8657: esc = "uArr"; break;
|
1718 |
|
|
case 8658: esc = "rArr"; break;
|
1719 |
|
|
case 8659: esc = "dArr"; break;
|
1720 |
|
|
case 8660: esc = "hArr"; break;
|
1721 |
|
|
case 8704: esc = "forall"; break;
|
1722 |
|
|
case 8706: esc = "part"; break;
|
1723 |
|
|
case 8707: esc = "exist"; break;
|
1724 |
|
|
case 8709: esc = "empty"; break;
|
1725 |
|
|
case 8711: esc = "nabla"; break;
|
1726 |
|
|
case 8712: esc = "isin"; break;
|
1727 |
|
|
case 8713: esc = "notin"; break;
|
1728 |
|
|
case 8715: esc = "ni"; break;
|
1729 |
|
|
case 8719: esc = "prod"; break;
|
1730 |
|
|
case 8721: esc = "sum"; break;
|
1731 |
|
|
case 8722: esc = "minus"; break;
|
1732 |
|
|
case 8727: esc = "lowast"; break;
|
1733 |
|
|
case 8730: esc = "radic"; break;
|
1734 |
|
|
case 8733: esc = "prop"; break;
|
1735 |
|
|
case 8734: esc = "infin"; break;
|
1736 |
|
|
case 8736: esc = "ang"; break;
|
1737 |
|
|
case 8743: esc = "and"; break;
|
1738 |
|
|
case 8744: esc = "or"; break;
|
1739 |
|
|
case 8745: esc = "cap"; break;
|
1740 |
|
|
case 8746: esc = "cup"; break;
|
1741 |
|
|
case 8747: esc = "int"; break;
|
1742 |
|
|
case 8756: esc = "there4"; break;
|
1743 |
|
|
case 8764: esc = "sim"; break;
|
1744 |
|
|
case 8773: esc = "cong"; break;
|
1745 |
|
|
case 8776: esc = "asymp"; break;
|
1746 |
|
|
case 8800: esc = "ne"; break;
|
1747 |
|
|
case 8801: esc = "equiv"; break;
|
1748 |
|
|
case 8804: esc = "le"; break;
|
1749 |
|
|
case 8805: esc = "ge"; break;
|
1750 |
|
|
case 8834: esc = "sub"; break;
|
1751 |
|
|
case 8835: esc = "sup"; break;
|
1752 |
|
|
case 8836: esc = "nsub"; break;
|
1753 |
|
|
case 8838: esc = "sube"; break;
|
1754 |
|
|
case 8839: esc = "supe"; break;
|
1755 |
|
|
case 8853: esc = "oplus"; break;
|
1756 |
|
|
case 8855: esc = "otimes"; break;
|
1757 |
|
|
case 8869: esc = "perp"; break;
|
1758 |
|
|
case 8901: esc = "sdot"; break;
|
1759 |
|
|
case 8968: esc = "lceil"; break;
|
1760 |
|
|
case 8969: esc = "rceil"; break;
|
1761 |
|
|
case 8970: esc = "lfloor"; break;
|
1762 |
|
|
case 8971: esc = "rfloor"; break;
|
1763 |
|
|
case 9001: esc = "lang"; break;
|
1764 |
|
|
case 9002: esc = "rang"; break;
|
1765 |
|
|
case 9674: esc = "loz"; break;
|
1766 |
|
|
case 9824: esc = "spades"; break;
|
1767 |
|
|
case 9827: esc = "clubs"; break;
|
1768 |
|
|
case 9829: esc = "hearts"; break;
|
1769 |
|
|
case 9830: esc = "diams"; break;
|
1770 |
|
|
}
|
1771 |
|
|
}
|
1772 |
|
|
|
1773 |
|
|
// else escape with numeric char refs
|
1774 |
|
|
if (esc == null) {
|
1775 |
|
|
stringBuf.setLength (0);
|
1776 |
|
|
stringBuf.append ("#x");
|
1777 |
|
|
stringBuf.append (Integer.toHexString (c).toUpperCase ());
|
1778 |
|
|
esc = stringBuf.toString ();
|
1779 |
|
|
|
1780 |
|
|
// FIXME: We don't write surrogate pairs correctly.
|
1781 |
|
|
// They should work as one ref per character, since
|
1782 |
|
|
// each pair is one character. For reading back into
|
1783 |
|
|
// Unicode, it matters beginning in Unicode 3.1 ...
|
1784 |
|
|
}
|
1785 |
|
|
break;
|
1786 |
|
|
}
|
1787 |
|
|
if (i != first)
|
1788 |
|
|
rawWrite (buf, off + first, i - first);
|
1789 |
|
|
first = i + 1;
|
1790 |
|
|
if (esc == eol)
|
1791 |
|
|
newline ();
|
1792 |
|
|
else {
|
1793 |
|
|
rawWrite ('&');
|
1794 |
|
|
rawWrite (esc);
|
1795 |
|
|
rawWrite (';');
|
1796 |
|
|
}
|
1797 |
|
|
}
|
1798 |
|
|
if (first < len)
|
1799 |
|
|
rawWrite (buf, off + first, len - first);
|
1800 |
|
|
}
|
1801 |
|
|
|
1802 |
|
|
|
1803 |
|
|
|
1804 |
|
|
private void newline ()
|
1805 |
|
|
throws SAXException, IOException
|
1806 |
|
|
{
|
1807 |
|
|
out.write (eol);
|
1808 |
|
|
column = 0;
|
1809 |
|
|
}
|
1810 |
|
|
|
1811 |
|
|
private void doIndent ()
|
1812 |
|
|
throws SAXException, IOException
|
1813 |
|
|
{
|
1814 |
|
|
int space = elementNestLevel * 2;
|
1815 |
|
|
|
1816 |
|
|
newline ();
|
1817 |
|
|
column = space;
|
1818 |
|
|
// track tabs only at line starts
|
1819 |
|
|
while (space > 8) {
|
1820 |
|
|
out.write ("\t");
|
1821 |
|
|
space -= 8;
|
1822 |
|
|
}
|
1823 |
|
|
while (space > 0) {
|
1824 |
|
|
out.write (" ");
|
1825 |
|
|
space -= 2;
|
1826 |
|
|
}
|
1827 |
|
|
}
|
1828 |
|
|
|
1829 |
|
|
private void rawWrite (char c)
|
1830 |
|
|
throws IOException
|
1831 |
|
|
{
|
1832 |
|
|
out.write (c);
|
1833 |
|
|
column++;
|
1834 |
|
|
}
|
1835 |
|
|
|
1836 |
|
|
private void rawWrite (String s)
|
1837 |
|
|
throws SAXException, IOException
|
1838 |
|
|
{
|
1839 |
|
|
if (prettyPrinting && "default".equals (space.peek ())) {
|
1840 |
|
|
char data [] = s.toCharArray ();
|
1841 |
|
|
rawWrite (data, 0, data.length);
|
1842 |
|
|
} else {
|
1843 |
|
|
out.write (s);
|
1844 |
|
|
column += s.length ();
|
1845 |
|
|
}
|
1846 |
|
|
}
|
1847 |
|
|
|
1848 |
|
|
// NOTE: if xhtml, the REC gives some rules about whitespace
|
1849 |
|
|
// which we could follow ... notably, many places where conformant
|
1850 |
|
|
// agents "must" consolidate/normalize whitespace. Line ends can
|
1851 |
|
|
// be removed there, etc. This may not be the right place to do
|
1852 |
|
|
// such mappings though.
|
1853 |
|
|
|
1854 |
|
|
// Line buffering may help clarify algorithms and improve results.
|
1855 |
|
|
|
1856 |
|
|
// It's likely xml:space needs more attention.
|
1857 |
|
|
|
1858 |
|
|
private void rawWrite (char buf [], int offset, int length)
|
1859 |
|
|
throws SAXException, IOException
|
1860 |
|
|
{
|
1861 |
|
|
boolean wrap;
|
1862 |
|
|
|
1863 |
|
|
if (prettyPrinting && space.empty ())
|
1864 |
|
|
fatal ("stack discipline", null);
|
1865 |
|
|
|
1866 |
|
|
wrap = prettyPrinting && "default".equals (space.peek ());
|
1867 |
|
|
if (!wrap) {
|
1868 |
|
|
out.write (buf, offset, length);
|
1869 |
|
|
column += length;
|
1870 |
|
|
return;
|
1871 |
|
|
}
|
1872 |
|
|
|
1873 |
|
|
// we're pretty printing and want to fill lines out only
|
1874 |
|
|
// to the desired line length.
|
1875 |
|
|
while (length > 0) {
|
1876 |
|
|
int target = lineLength - column;
|
1877 |
|
|
boolean wrote = false;
|
1878 |
|
|
|
1879 |
|
|
// Do we even have a problem?
|
1880 |
|
|
if (target > length || noWrap) {
|
1881 |
|
|
out.write (buf, offset, length);
|
1882 |
|
|
column += length;
|
1883 |
|
|
return;
|
1884 |
|
|
}
|
1885 |
|
|
|
1886 |
|
|
// break the line at a space character, trying to fill
|
1887 |
|
|
// as much of the line as possible.
|
1888 |
|
|
char c;
|
1889 |
|
|
|
1890 |
|
|
for (int i = target - 1; i >= 0; i--) {
|
1891 |
|
|
if ((c = buf [offset + i]) == ' ' || c == '\t') {
|
1892 |
|
|
i++;
|
1893 |
|
|
out.write (buf, offset, i);
|
1894 |
|
|
doIndent ();
|
1895 |
|
|
offset += i;
|
1896 |
|
|
length -= i;
|
1897 |
|
|
wrote = true;
|
1898 |
|
|
break;
|
1899 |
|
|
}
|
1900 |
|
|
}
|
1901 |
|
|
if (wrote)
|
1902 |
|
|
continue;
|
1903 |
|
|
|
1904 |
|
|
// no space character permitting break before target
|
1905 |
|
|
// line length is filled. So, take the next one.
|
1906 |
|
|
if (target < 0)
|
1907 |
|
|
target = 0;
|
1908 |
|
|
for (int i = target; i < length; i++)
|
1909 |
|
|
if ((c = buf [offset + i]) == ' ' || c == '\t') {
|
1910 |
|
|
i++;
|
1911 |
|
|
out.write (buf, offset, i);
|
1912 |
|
|
doIndent ();
|
1913 |
|
|
offset += i;
|
1914 |
|
|
length -= i;
|
1915 |
|
|
wrote = true;
|
1916 |
|
|
break;
|
1917 |
|
|
}
|
1918 |
|
|
if (wrote)
|
1919 |
|
|
continue;
|
1920 |
|
|
|
1921 |
|
|
// no such luck.
|
1922 |
|
|
out.write (buf, offset, length);
|
1923 |
|
|
column += length;
|
1924 |
|
|
break;
|
1925 |
|
|
}
|
1926 |
|
|
}
|
1927 |
|
|
}
|