Package org.allcolor.xml.parser

Source Code of org.allcolor.xml.parser.CDomImplementation

/*
* Copyright (C) 2005 by Quentin Anciaux
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
* for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*  @author Quentin Anciaux
*/
package org.allcolor.xml.parser;
import org.allcolor.dtd.parser.CDocType;

import org.allcolor.xml.parser.dom.ANode;
import org.allcolor.xml.parser.dom.ADocument;
import org.allcolor.xml.parser.dom.CDom1HTMLDocument;
import org.allcolor.xml.parser.dom.CDom2HTMLDocument;

import org.w3c.dom.DOMException;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;

import java.io.Serializable;

import java.util.HashMap;
import java.util.Map;


/**
* DOCUMENT ME!
*
* @author Quentin Anciaux
*/
public final class CDomImplementation
  implements DOMImplementation,
    Serializable {
  static final long serialVersionUID = 3584142368443099970L;

  /**
   * DOCUMENT ME!
   */
  public static final String INVALID_CHAR = "{}~'!@#$%^&*()+=[]\\/;`<>, \"";

  /** DOCUMENT ME! */
  public static final String PARSER_HTML = "http://www.allcolor.org/shaniparser/html";

  /** DOCUMENT ME! */
  private final Map features;

  private Map reqFeatures;
 
  public void setReqFeatures(String reqFeatures) {
    this.reqFeatures = new HashMap();
    CStringTokenizer tokenizer = new CStringTokenizer(reqFeatures,
        " ", false);
    while (tokenizer.hasMoreTokens()) {
      String name    = tokenizer.nextToken();
      String version = "";

      if (tokenizer.hasMoreTokens()) {
        version = tokenizer.nextToken();
      }
      this.reqFeatures.put(name+version,this);
    } // end while
  }

 
 
  public CDomImplementation() {
    this(new HashMap());
  }
  /**
   * Creates a new CDomImplementation object.
   */
  public CDomImplementation(final Map features) {
    this.features = features;
    features.put("xml1.0", this);
    features.put("xml2.0", this);
    features.put("xml3.0", this);
    features.put("xml", this);
    features.put("xmlnull", this);
    features.put("core2.0", this);
    features.put("core3.0", this);
    features.put("core", this);
    features.put("corenull", this);
    features.put("html1.0", this);
    features.put("html2.0", this);
    features.put("xhtml2.0", this);
    features.put("html", this);
    features.put("htmlnull", this);
    features.put("xhtml", this);
    features.put("xhtmlnull", this);
    features.put("css2.0", this);
    features.put("css", this);
    features.put("cssnull", this);
    features.put("css22.0", this);
    features.put("css2", this);
    features.put("css2null", this);
    features.put("stylesheets2.0", this);
    features.put("stylesheets", this);
    features.put("stylesheetsnull", this);
   
  } // end CDomImplementation()

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.DOMImplementation#createDocument(java.lang.String,
   *      java.lang.String, org.w3c.dom.DocumentType)
   */
  /**
   * DOCUMENT ME!
   *
   * @param namespaceURI DOCUMENT ME!
   * @param qualifiedName DOCUMENT ME!
   * @param doctype DOCUMENT ME!
   *
   * @return DOCUMENT ME!
   *
   * @throws DOMException DOCUMENT ME!
   */
  public final Document createDocument(
    final String     namespaceURI,
    final String     qualifiedName,
    final DocumentType doctype)
    throws DOMException {
    if ((qualifiedName == null) || "".equals(qualifiedName)) {
      if (!((namespaceURI == null) &&
          (qualifiedName == null) &&
          (doctype == null))) {
        throw new DOMException(DOMException.INVALID_CHARACTER_ERR,
          "Invalid char : null qualified name.");
      }
    } // end if

    if ((qualifiedName != null) &&
        (qualifiedName.indexOf(":") != -1)) {
      if ((namespaceURI == null) ||
          (qualifiedName.indexOf(":") != qualifiedName.lastIndexOf(
            ":"))) {
        throw new DOMException(DOMException.NAMESPACE_ERR,
          "Malformed name " + qualifiedName);
      }

      String prefix = qualifiedName.substring(0,
          qualifiedName.indexOf(":"));

      if (prefix.equals("xml") &&
          !"http://www.w3.org/XML/1998/namespace".equals(
            namespaceURI)) {
        throw new DOMException(DOMException.NAMESPACE_ERR,
          "Illegal prefix for URI " + qualifiedName + " - " +
          namespaceURI);
      } // end if

      String name    = qualifiedName.substring(qualifiedName.indexOf(
            ":") + 1);
      char   array[] = name.toCharArray();

      for (int i = 0; i < array.length; i++) {
        if (INVALID_CHAR.indexOf(array[i]) != -1) {
          throw new DOMException(DOMException.INVALID_CHARACTER_ERR,
            "Invalid char : " + array[i]);
        }
      } // end for
    } // end if
    else if ((qualifiedName != null) &&
        (qualifiedName.indexOf(":") == -1)) {
      String name    = qualifiedName;
      char   array[] = name.toCharArray();

      for (int i = 0; i < array.length; i++) {
        if (INVALID_CHAR.indexOf(array[i]) != -1) {
          throw new DOMException(DOMException.INVALID_CHARACTER_ERR,
            "Invalid char : " + array[i]);
        }
      } // end for
    } // end else if

    if ((doctype != null) && (doctype.getOwnerDocument() != null)) {
      throw new DOMException(DOMException.WRONG_DOCUMENT_ERR,
        "Doctype already used.");
    } // end if

    ADocument doc = createNewDocument(doctype);

    if (doctype != null) {
      ((ANode) doctype).setOwnerDocument(doc);
    }

    if (qualifiedName != null) {
      if (namespaceURI != null) {
        doc.appendChild(doc.createElementNS(namespaceURI,
            qualifiedName));
        doc.hasNS = true;
      } // end if
      else {
        doc.appendChild(doc.createElement(qualifiedName));
        doc.hasNS = true;
      } // end else
    } // end if

    doc.setDocumentType(doctype);
    doc.setBuildStageDone();
    return doc;
  } // end createDocument()

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.DOMImplementation#createDocumentType(java.lang.String,
   *      java.lang.String, java.lang.String)
   */
  /**
   * DOCUMENT ME!
   *
   * @param qualifiedName DOCUMENT ME!
   * @param publicId DOCUMENT ME!
   * @param systemId DOCUMENT ME!
   *
   * @return DOCUMENT ME!
   *
   * @throws DOMException DOCUMENT ME!
   */
  public final DocumentType createDocumentType(
    final String qualifiedName,
    final String publicId,
    final String systemId)
    throws DOMException {
    if ((qualifiedName == null) || "".equals(qualifiedName)) {
      throw new DOMException(DOMException.INVALID_CHARACTER_ERR,
        "Invalid char : qualified name is null.");
    } // end if

    if (qualifiedName.indexOf(":") != qualifiedName.lastIndexOf(":")) {
      throw new DOMException(DOMException.NAMESPACE_ERR,
        "Malformed name " + qualifiedName);
    }

    if (qualifiedName.indexOf(":") != -1) {
      String name    = qualifiedName.substring(qualifiedName.indexOf(
            ":") + 1);
      char   array[] = name.toCharArray();

      for (int i = 0; i < array.length; i++) {
        if (INVALID_CHAR.indexOf(array[i]) != -1) {
          throw new DOMException(DOMException.INVALID_CHARACTER_ERR,
            "Invalid char : " + array[i]);
        }
      } // end for
    } // end if
    else if (qualifiedName.indexOf(":") == -1) {
      String name    = qualifiedName;
      char   array[] = name.toCharArray();

      for (int i = 0; i < array.length; i++) {
        if (INVALID_CHAR.indexOf(array[i]) != -1) {
          throw new DOMException(DOMException.INVALID_CHARACTER_ERR,
            "Invalid char : " + array[i]);
        }
      } // end for
    } // end else if

    return new CDocType("!DOCTYPE " + qualifiedName + " " +
      ((publicId != null)
      ? ("PUBLIC \"" + publicId + "\" ")
      : "") +
      ((systemId != null)
      ? ("SYSTEM \"" + systemId + "\"")
      : ""), qualifiedName, publicId, systemId, null);
  } // end createDocumentType()

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.DOMImplementation#hasFeature(java.lang.String,
   *      java.lang.String)
   */
  /**
   * DOCUMENT ME!
   *
   * @param feature DOCUMENT ME!
   * @param version DOCUMENT ME!
   *
   * @return DOCUMENT ME!
   */
  public final boolean hasFeature(
    final String feature,
    final String version) {
    if (feature.startsWith("+"))
      return features.containsKey(feature.toLowerCase().substring(1)+version);
    return features.containsKey(feature.toLowerCase() + version);
  } // end hasFeature()

  public final boolean hasRequestedFeature(
      final String feature,
      final String version) {
      if (reqFeatures == null) return false;
      if (feature.startsWith("+"))
        return reqFeatures.containsKey(feature.toLowerCase().substring(1)+version);
      return reqFeatures.containsKey(feature.toLowerCase() + version);
    } // end hasFeature()

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.DOMImplementation#getFeature(java.lang.String,
   *      java.lang.String)
   */
  /**
   * DOCUMENT ME!
   *
   * @param feature DOCUMENT ME!
   * @param version DOCUMENT ME!
   *
   * @return DOCUMENT ME!
   */
  public Object getFeature(
    final String feature,
    final String version) {
    return features.get(feature.toLowerCase() + version);
  } // end getFeature()

  /**
   * DOCUMENT ME!
   *
   * @param doctype DOCUMENT ME!
   *
   * @return DOCUMENT ME!
   */
  private final ADocument createNewDocument(
    final DocumentType doctype) {
    if ((hasFeature(PARSER_HTML, "")) ||
        ((doctype != null) && (doctype.getPublicId() != null) &&
        ((doctype.getPublicId().indexOf("XHTML") != -1) ||
        ((doctype.getPublicId().indexOf("HTML") != -1) &&
        (doctype.getPublicId().indexOf("//W3C//DTD ") != -1))))) {
      ADocument doc = null;
      if ((hasRequestedFeature("HTML", "1.0")) ||
         (hasRequestedFeature("HTML", null))) {
        doc = new CDom1HTMLDocument(true, null);
      } else {
        doc = new CDom2HTMLDocument(true, null);
      }
      doc.setImplementation(this);
      if (doctype != null) {
        doc.appendChild(doctype);
      }
      return doc;
    } // end if

    ADocument doc = null;
    if ((hasRequestedFeature("HTML", "1.0")) ||
       (hasRequestedFeature("HTML", null))) {
      doc = new CDom1HTMLDocument(true, null);
    } else {
      doc = new CDom2HTMLDocument();
    }
    doc.setImplementation(this);
    if (doctype != null) {
      doc.appendChild(doctype);
    }
    return doc;
  } // end createNewDocument()
} // end CDomImplementation
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