domdocument.java

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· Java 代码 · 共 1,388 行 · 第 1/3 页

                (c < 0x10000 || c > 0xeffff) &&
                c != 0x00b7 &&
                (c < 0x0300 || c > 0x036f) &&
                (c < 0x203f || c > 0x2040))
              {
                throw new DomDOMException(DOMException.INVALID_CHARACTER_ERR, name,
                                          null, c);
              }
          }
        else
          {
            // XML 1.0
            int type = Character.getType(c);
            switch (type)
              {
              case Character.LOWERCASE_LETTER: // Ll
              case Character.UPPERCASE_LETTER: // Lu
              case Character.DECIMAL_DIGIT_NUMBER: // Nd
              case Character.OTHER_LETTER: // Lo
              case Character.TITLECASE_LETTER: // Lt
              case Character.LETTER_NUMBER: // Nl
              case Character.COMBINING_SPACING_MARK: // Mc
              case Character.ENCLOSING_MARK: // Me
              case Character.NON_SPACING_MARK: // Mn
              case Character.MODIFIER_LETTER: // Lm
                if ((c > 0xf900 && c < 0xfffe) ||
                    (c >= 0x20dd && c <= 0x20e0))
                  {
                    // Compatibility area and Unicode 2.0 exclusions
                    throw new DomDOMException(DOMException.INVALID_CHARACTER_ERR,
                                              name, null, c);
                  }
                break;
              default:
                if (c != '-' && c != '.' && c != ':' && c != '_' &&
                    c != 0x0387 && (c < 0x02bb || c > 0x02c1) &&
                    c != 0x0559 && c != 0x06e5 && c != 0x06e6 && c != 0x00b7)
                  {
                    throw new DomDOMException(DOMException.INVALID_CHARACTER_ERR,
                                              name, null, c);
                  }
              }
          }
      }

    // FIXME characters with a font or compatibility decomposition (i.e.
    // those with a "compatibility formatting tag" in field 5 of the
    // database -- marked by field 5 beginning with a "<") are not allowed.
  }

  // package private
  static void checkNCName(String name, boolean xml11)
  {
    checkName(name, xml11);
    int len = name.length();
    int index = name.indexOf(':');
    if (index != -1)
      {
        if (index == 0 || index == (len - 1) ||
            name.lastIndexOf(':') != index)
          {
            throw new DomDOMException(DOMException.NAMESPACE_ERR,
                                      name, null, 0);
          }
      }
  }

  // package private
  static void checkChar(String value, boolean xml11)
  {
    char[] chars = value.toCharArray();
    checkChar(chars, 0, chars.length, xml11);
  }
  
  static void checkChar(char[] buf, int off, int len, boolean xml11)
  {
    for (int i = 0; i < len; i++)
      {
        char c = buf[i];
        
        // assume surrogate pairing checks out OK, for simplicity
        if ((c >= 0x0020 && c <= 0xd7ff) ||
            (c == 0x000a || c == 0x000d || c == 0x0009) ||
            (c >= 0xe000 && c <= 0xfffd) ||
            (c >= 0x10000 && c <= 0x10ffff))
          {
            continue;
          }
        if (xml11)
          {
            if ((c >= 0x0001 && c <= 0x001f) ||
                (c >= 0x007f && c <= 0x0084) ||
                (c >= 0x0086 && c <= 0x009f))
              {
                continue;
              }
          }
        throw new DomDOMException(DOMException.INVALID_CHARACTER_ERR,
                                  new String(buf, off, len), null, c);
      }
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created element with the specified name.
   */
  public Element createElement(String name)
  {
    Element element;
    
    if (checkingCharacters)
      {
        checkName(name, "1.1".equals(version));
      }
    if (name.startsWith("xml:"))
      {
        element = createElementNS(null, name);
      }
    else
      {
        element = new DomElement(this, null, name);
      }
    defaultAttributes(element, name);
    return element;
  }

  /**
   * <b>DOM L2</b>
   * Returns a newly created element with the specified name
   * and namespace information.
   */
  public Element createElementNS(String namespaceURI, String name)
  {
    if (checkingCharacters)
      {
        checkNCName(name, "1.1".equals(version));
      }
    
    if ("".equals(namespaceURI))
      {
        namespaceURI = null;
      }
    if (name.startsWith("xml:"))
      {
        if (namespaceURI != null
            && !XMLConstants.XML_NS_URI.equals(namespaceURI))
          {
            throw new DomDOMException(DOMException.NAMESPACE_ERR,
                                      "xml namespace is always " +
                                      XMLConstants.XML_NS_URI, this, 0);
          }
        namespaceURI = XMLConstants.XML_NS_URI;
      }
    else if (XMLConstants.XMLNS_ATTRIBUTE.equals(name) ||
             name.startsWith("xmlns:"))
      {
        throw new DomDOMException(DOMException.NAMESPACE_ERR,
                                  "xmlns is reserved", this, 0);
      }
    else if (namespaceURI == null && name.indexOf(':') != -1)
      {
        throw new DomDOMException(DOMException.NAMESPACE_ERR,
                                  "prefixed name '" + name +
                                  "' needs a URI", this, 0);
      }
    
    Element  element = new DomElement(this, namespaceURI, name);
    defaultAttributes(element, name);
    return element;
  }
  
  private void defaultAttributes(Element element, String name)
  {
    DomDoctype doctype = (DomDoctype) getDoctype();
    if (doctype == null)
      {
        return;
      }

    // default any attributes that need it
    DTDElementTypeInfo info = doctype.getElementTypeInfo(name);
    if (info != null)
      {
        for (Iterator i = info.attributes(); i != null && i.hasNext(); )
          {
            DTDAttributeTypeInfo attr = (DTDAttributeTypeInfo) i.next();
            DomAttr node = (DomAttr) createAttribute(attr.name);
            
            String value = attr.value;
            if (value == null)
              {
                value = "";
              }
            node.setValue(value);
            node.setSpecified(false);
            element.setAttributeNode(node);
          }
      }
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created document fragment.
   */
  public DocumentFragment createDocumentFragment()
  {
    return new DomDocumentFragment(this);
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created text node with the specified value.
   */
  public Text createTextNode(String value)
  {
    if (checkingCharacters)
      {
        checkChar(value, "1.1".equals(version));
      }
    return new DomText(this, value);
  }

  /**
   * Returns a newly created text node with the specified value.
   */
  public Text createTextNode(char[] buf, int off, int len)
  {
    if (checkingCharacters)
      {
        checkChar(buf, off, len, "1.1".equals(version));
      }
    return new DomText(this, buf, off, len);
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created comment node with the specified value.
   */
  public Comment createComment(String value)
  {
    if (checkingCharacters)
      {
        checkChar(value, "1.1".equals(version));
      }
    return new DomComment(this, value);
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created CDATA section node with the specified value.
   */
  public CDATASection createCDATASection(String value)
  {
    if (checkingCharacters)
      {
        checkChar(value, "1.1".equals(version));
      }
    return new DomCDATASection(this, value);
  }

  /**
   * Returns a newly created CDATA section node with the specified value.
   */
  public CDATASection createCDATASection(char[] buf, int off, int len)
  {
    if (checkingCharacters)
      {
        checkChar(buf, off, len, "1.1".equals(version));
      }
    return new DomCDATASection(this, buf, off, len);
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created processing instruction.
   */
  public ProcessingInstruction createProcessingInstruction(String target,
                                                           String data)
  {
    if (checkingCharacters)
      {
        boolean xml11 = "1.1".equals(version);
        checkName(target, xml11);
        if ("xml".equalsIgnoreCase(target))
          {
            throw new DomDOMException(DOMException.SYNTAX_ERR,
                                      "illegal PI target name",
                                      this, 0);
          }
        checkChar(data, xml11);
      }
    return new DomProcessingInstruction(this, target, data);
  }

  /**
   * <b>DOM L1</b>
   * Returns a newly created attribute with the specified name.
   */
  public Attr createAttribute(String name)
  {
    if (checkingCharacters)
      {
        checkName(name, "1.1".equals(version));
      }
    if (name.startsWith("xml:"))
      {
        return createAttributeNS(XMLConstants.XML_NS_URI, name);
      }
    else if (XMLConstants.XMLNS_ATTRIBUTE.equals(name) ||
             name.startsWith("xmlns:"))
      {
        return createAttributeNS(XMLConstants.XMLNS_ATTRIBUTE_NS_URI, name);
      }
    else
      {
        return new DomAttr(this, null, name);
      }
  }

  /**
   * <b>DOM L2</b>
   * Returns a newly created attribute with the specified name
   * and namespace information.
   */
  public Attr createAttributeNS(String namespaceURI, String name)
  {
    if (checkingCharacters)
      {
        checkNCName(name, "1.1".equals(version));
      }
    
    if ("".equals(namespaceURI))
      {
        namespaceURI = null;
      }
    if (name.startsWith ("xml:"))
      {
        if (namespaceURI == null)
          {
            namespaceURI = XMLConstants.XML_NS_URI;
          }
        else if (!XMLConstants.XML_NS_URI.equals(namespaceURI))
          {
            throw new DomDOMException(DOMException.NAMESPACE_ERR,
                                      "xml namespace is always " +
                                      XMLConstants.XML_NS_URI,
                                      this, 0);
          }
      }
    else if (XMLConstants.XMLNS_ATTRIBUTE.equals(name) ||
             name.startsWith("xmlns:"))
      {
        if (namespaceURI == null)
          {
            namespaceURI = XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
          }
        else if (!XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(namespaceURI))
          {
            throw new DomDOMException(DOMException.NAMESPACE_ERR,
                                      "xmlns namespace must be " +
                                      XMLConstants.XMLNS_ATTRIBUTE_NS_URI,
                                      this, 0);
          }
      }
    else if (namespaceURI == null && name.indexOf(':') != -1)
      {
        throw new DomDOMException(DOMException.NAMESPACE_ERR,
                        "prefixed name needs a URI: " + name, this, 0);
      }
    return new DomAttr(this, namespaceURI, name);
  }
  
  /**
   * <b>DOM L1</b>
   * Returns a newly created reference to the specified entity.
   * The caller should populate this with the appropriate children
   * and then mark it as readonly.
   *
   * @see DomNode#makeReadonly
   */
  public EntityReference createEntityReference(String name)
  {
    DomEntityReference ret = new DomEntityReference(this, name);
    DocumentType doctype = getDoctype();
    if (doctype != null)
      {
        DomEntity ent = (DomEntity) doctype.getEntities().getNamedItem(name);
        if (ent != null)
          {
            for (DomNode ctx = ent.first; ctx != null; ctx = ctx.next)
              {
                ret.appendChild(ctx.cloneNode(true));
              }
          }
      }
    ret.makeReadonly();
    return ret;
  }

  /**
   * <b>DOM L2</b>
   * Makes a copy of the specified node, with all nodes "owned" by
   * this document and with children optionally copied.  This type
   * of standard utility has become, well, a standard utility.
   *
   * <p> Note that EntityReference nodes created through this method (either
   * directly, or recursively) never have children, and that there is no
   * portable way to associate them with such children.
   *
   * <p> Note also that there is no requirement that the specified node
   * be associated with a different document.  This differs from the
   * <em>cloneNode</em> operation in that the node itself is not given
   * an opportunity to participate, so that any information managed
   * by node subclasses will be lost.
   */
  public Node importNode(Node src, boolean deep)
  {
    Node dst = null;
    switch (src.getNodeType())
      {
      case TEXT_NODE:
        dst = createTextNode(src.getNodeValue());
        break;
      case CDATA_SECTION_NODE:
        dst = createCDATASection(src.getNodeValue());
        break;
      case COMMENT_NODE:
        dst = createComment(src.getNodeValue());
        break;
      case PROCESSING_INSTRUCTION_NODE:
        dst = createProcessingInstruction(src.getNodeName(),
                                          src.getNodeValue());
        break;
      case NOTATION_NODE:
        // NOTE:  There's no standard way to create
        // these, or add them to a doctype.  Useless.
        Notation notation = (Notation) src;
        dst = new DomNotation(this, notation.getNodeName(),
                              notation.getPublicId(),
                              notation.getSystemId());
        break;
      case ENTITY_NODE:
        // NOTE:  There's no standard way to create
        // these, or add them to a doctype.  Useless.
        Entity entity = (Entity) src;
        dst = new DomEntity(this, entity.getNodeName(),
                            entity.getPublicId(),
                            entity.getSystemId(),
                            entity.getNotationName());
        if (deep)
          {
            for (Node ctx = src.getFirstChild(); ctx != null;
                 ctx = ctx.getNextSibling())
              {
                dst.appendChild(importNode(ctx, deep));
              }
          }
        break;
      case ENTITY_REFERENCE_NODE:
        dst = createEntityReference(src.getNodeName());
        break;
      case DOCUMENT_FRAGMENT_NODE:
        dst = new DomDocumentFragment(this);