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  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code 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 General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 // AttributesImpl.java - default implementation of Attributes.

 // Written by David Megginson, sax@megginson.com

 // NO WARRANTY!  This class is in the public domain.

 // $Id: AttributesImpl.java,v 1.4 2002/09/29 02:55:48 okajima Exp $

 //fixed bug at removeAttribute!! by Daisuke OKAJIMA 2002.4.21

 package com.sun.tools.internal.jxc.gen.config;

 import org.xml.sax.Attributes;

 /**

  * Default implementation of the Attributes interface.

  *

  * <blockquote>

  * <em>This module, both source code and documentation, is in the

  * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>

  * </blockquote>

  *

  * <p>This class provides a default implementation of the SAX2

  * {@link org.xml.sax.Attributes Attributes} interface, with the

  * addition of manipulators so that the list can be modified or

  * reused.</p>

  *

  * <p>There are two typical uses of this class:</p>

  *

  * <ol>

  * <li>to take a persistent snapshot of an Attributes object

  *  in a {@link org.xml.sax.ContentHandler#startElement startElement} event; or</li>

  * <li>to construct or modify an Attributes object in a SAX2 driver or filter.</li>

  * </ol>

  *

  * <p>This class replaces the now-deprecated SAX1 {@link

  * org.xml.sax.helpers.AttributeListImpl AttributeListImpl}

  * class; in addition to supporting the updated Attributes

  * interface rather than the deprecated {@link org.xml.sax.AttributeList

  * AttributeList} interface, it also includes a much more efficient

  * implementation using a single array rather than a set of Vectors.</p>

  *

  * <p><b>

  *     Auto-generated, do not edit.

  * </b></p>

  * @since SAX 2.0

  * @author David Megginson,

  *         <a href="mailto:sax@megginson.com">sax@megginson.com</a>

  * @version 2.0

  */

 public class AttributesImpl implements Attributes

 {

     ////////////////////////////////////////////////////////////////////

     // Constructors.

     ////////////////////////////////////////////////////////////////////

     /**

      * Construct a new, empty AttributesImpl object.

      */

     public AttributesImpl ()

     {

     length = 0;

     data = null;

     }

     /**

      * Copy an existing Attributes object.

      *

      * <p>This constructor is especially useful inside a

      * {@link org.xml.sax.ContentHandler#startElement startElement} event.</p>

      *

      * @param atts The existing Attributes object.

      */

     public AttributesImpl (Attributes atts)

     {

     setAttributes(atts);

     }

     ////////////////////////////////////////////////////////////////////

     // Implementation of org.xml.sax.Attributes.

     ////////////////////////////////////////////////////////////////////

     /**

      * Return the number of attributes in the list.

      *

      * @return The number of attributes in the list.

      * @see org.xml.sax.Attributes#getLength

      */

     public int getLength ()

     {

     return length;

     }

     /**

      * Return an attribute's Namespace URI.

      *

      * @param index The attribute's index (zero-based).

      * @return The Namespace URI, the empty string if none is

      *         available, or null if the index is out of range.

      * @see org.xml.sax.Attributes#getURI

      */

     public String getURI (int index)

     {

     if (index >= 0 && index < length) {

         return data[index*5];

     } else {

         return null;

     }

     }

     /**

      * Return an attribute's local name.

      *

      * @param index The attribute's index (zero-based).

      * @return The attribute's local name, the empty string if

      *         none is available, or null if the index if out of range.

      * @see org.xml.sax.Attributes#getLocalName

      */

     public String getLocalName (int index)

     {

     if (index >= 0 && index < length) {

         return data[index*5+1];

     } else {

         return null;

     }

     }

     /**

      * Return an attribute's qualified (prefixed) name.

      *

      * @param index The attribute's index (zero-based).

      * @return The attribute's qualified name, the empty string if

      *         none is available, or null if the index is out of bounds.

      * @see org.xml.sax.Attributes#getQName

      */

     public String getQName (int index)

     {

     if (index >= 0 && index < length) {

         return data[index*5+2];

     } else {

         return null;

     }

     }

     /**

      * Return an attribute's type by index.

      *

      * @param index The attribute's index (zero-based).

      * @return The attribute's type, "CDATA" if the type is unknown, or null

      *         if the index is out of bounds.

      * @see org.xml.sax.Attributes#getType(int)

      */

     public String getType (int index)

     {

     if (index >= 0 && index < length) {

         return data[index*5+3];

     } else {

         return null;

     }

     }

     /**

      * Return an attribute's value by index.

      *

      * @param index The attribute's index (zero-based).

      * @return The attribute's value or null if the index is out of bounds.

      * @see org.xml.sax.Attributes#getValue(int)

      */

     public String getValue (int index)

     {

     if (index >= 0 && index < length) {

         return data[index*5+4];

     } else {

         return null;

     }

     }

     /**

      * Look up an attribute's index by Namespace name.

      *

      * <p>In many cases, it will be more efficient to look up the name once and

      * use the index query methods rather than using the name query methods

      * repeatedly.</p>

      *

      * @param uri The attribute's Namespace URI, or the empty

      *        string if none is available.

      * @param localName The attribute's local name.

      * @return The attribute's index, or -1 if none matches.

      * @see org.xml.sax.Attributes#getIndex(java.lang.String,java.lang.String)

      */

     public int getIndex (String uri, String localName)

     {

     int max = length * 5;

     for (int i = 0; i < max; i += 5) {

         if (data[i].equals(uri) && data[i+1].equals(localName)) {

         return i / 5;

         }

     }

     return -1;

     }

     /**

      * Look up an attribute's index by qualified (prefixed) name.

      *

      * @param qName The qualified name.

      * @return The attribute's index, or -1 if none matches.

      * @see org.xml.sax.Attributes#getIndex(java.lang.String)

      */

     public int getIndex (String qName)

     {

     int max = length * 5;

     for (int i = 0; i < max; i += 5) {

         if (data[i+2].equals(qName)) {

         return i / 5;

         }

     }

     return -1;

     }

     /**

      * Look up an attribute's type by Namespace-qualified name.

      *

      * @param uri The Namespace URI, or the empty string for a name

      *        with no explicit Namespace URI.

      * @param localName The local name.

      * @return The attribute's type, or null if there is no

      *         matching attribute.

      * @see org.xml.sax.Attributes#getType(java.lang.String,java.lang.String)

      */

     public String getType (String uri, String localName)

     {

     int max = length * 5;

     for (int i = 0; i < max; i += 5) {

         if (data[i].equals(uri) && data[i+1].equals(localName)) {

         return data[i+3];

         }

     }

     return null;

     }

     /**

      * Look up an attribute's type by qualified (prefixed) name.

      *

      * @param qName The qualified name.

      * @return The attribute's type, or null if there is no

      *         matching attribute.

      * @see org.xml.sax.Attributes#getType(java.lang.String)

      */

     public String getType (String qName)

     {

     int max = length * 5;

     for (int i = 0; i < max; i += 5) {

         if (data[i+2].equals(qName)) {

         return data[i+3];

         }

     }

     return null;

     }

     /**

      * Look up an attribute's value by Namespace-qualified name.

      *

      * @param uri The Namespace URI, or the empty string for a name

      *        with no explicit Namespace URI.

      * @param localName The local name.

      * @return The attribute's value, or null if there is no

      *         matching attribute.

      * @see org.xml.sax.Attributes#getValue(java.lang.String,java.lang.String)

      */

     public String getValue (String uri, String localName)

     {

     int max = length * 5;

     for (int i = 0; i < max; i += 5) {

         if (data[i].equals(uri) && data[i+1].equals(localName)) {

         return data[i+4];

         }

     }

     return null;

     }

     /**

      * Look up an attribute's value by qualified (prefixed) name.

      *

      * @param qName The qualified name.

      * @return The attribute's value, or null if there is no

      *         matching attribute.

      * @see org.xml.sax.Attributes#getValue(java.lang.String)

      */

     public String getValue (String qName)

     {

     int max = length * 5;

     for (int i = 0; i < max; i += 5) {

         if (data[i+2].equals(qName)) {

         return data[i+4];

         }

     }

     return null;

     }

     ////////////////////////////////////////////////////////////////////

     // Manipulators.

     ////////////////////////////////////////////////////////////////////

     /**

      * Clear the attribute list for reuse.

      *

      * <p>Note that no memory is actually freed by this call:

      * the current arrays are kept so that they can be

      * reused.</p>

      */

     public void clear ()

     {

     length = 0;

     }

     /**

      * Copy an entire Attributes object.

      *

      * <p>It may be more efficient to reuse an existing object

      * rather than constantly allocating new ones.</p>

      *

      * @param atts The attributes to copy.

      */

     public void setAttributes (Attributes atts)

     {

     clear();

     length = atts.getLength();

     data = new String[length*5];

     for (int i = 0; i < length; i++) {

         data[i*5] = atts.getURI(i);

         data[i*5+1] = atts.getLocalName(i);

         data[i*5+2] = atts.getQName(i);

         data[i*5+3] = atts.getType(i);

         data[i*5+4] = atts.getValue(i);

     }

     }

     /**

      * Add an attribute to the end of the list.

      *

      * <p>For the sake of speed, this method does no checking

      * to see if the attribute is already in the list: that is

      * the responsibility of the application.</p>

      *

      * @param uri The Namespace URI, or the empty string if

      *        none is available or Namespace processing is not

      *        being performed.

      * @param localName The local name, or the empty string if

      *        Namespace processing is not being performed.

      * @param qName The qualified (prefixed) name, or the empty string

      *        if qualified names are not available.

      * @param type The attribute type as a string.

      * @param value The attribute value.

      */

     public void addAttribute (String uri, String localName, String qName,

                   String type, String value)

     {

     ensureCapacity(length+1);

     data[length*5] = uri;

     data[length*5+1] = localName;

     data[length*5+2] = qName;

     data[length*5+3] = type;

     data[length*5+4] = value;

     length++;

     }

     /**

      * Set an attribute in the list.

      *

      * <p>For the sake of speed, this method does no checking

      * for name conflicts or well-formedness: such checks are the

      * responsibility of the application.</p>

      *

      * @param index The index of the attribute (zero-based).

      * @param uri The Namespace URI, or the empty string if

      *        none is available or Namespace processing is not

      *        being performed.

      * @param localName The local name, or the empty string if

      *        Namespace processing is not being performed.

      * @param qName The qualified name, or the empty string

      *        if qualified names are not available.

      * @param type The attribute type as a string.

      * @param value The attribute value.

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void setAttribute (int index, String uri, String localName,

                   String qName, String type, String value)

     {

     if (index >= 0 && index < length) {

         data[index*5] = uri;

         data[index*5+1] = localName;

         data[index*5+2] = qName;

         data[index*5+3] = type;

         data[index*5+4] = value;

     } else {

         badIndex(index);

     }

     }

     /**

      * Remove an attribute from the list.

      *

      * @param index The index of the attribute (zero-based).

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void removeAttribute (int index)

     {

         if (index >= 0 && index < length) {

             if (index < length - 1) {

                 System.arraycopy(data, (index+1)*5, data, index*5,

                          (length-index-1)*5);

             }

             length--;

         } else {

             badIndex(index);

         }

     }

     /**

      * Set the Namespace URI of a specific attribute.

      *

      * @param index The index of the attribute (zero-based).

      * @param uri The attribute's Namespace URI, or the empty

      *        string for none.

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void setURI (int index, String uri)

     {

     if (index >= 0 && index < length) {

         data[index*5] = uri;

     } else {

         badIndex(index);

     }

     }

     /**

      * Set the local name of a specific attribute.

      *

      * @param index The index of the attribute (zero-based).

      * @param localName The attribute's local name, or the empty

      *        string for none.

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void setLocalName (int index, String localName)

     {

     if (index >= 0 && index < length) {

         data[index*5+1] = localName;

     } else {

         badIndex(index);

     }

     }

     /**

      * Set the qualified name of a specific attribute.

      *

      * @param index The index of the attribute (zero-based).

      * @param qName The attribute's qualified name, or the empty

      *        string for none.

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void setQName (int index, String qName)

     {

     if (index >= 0 && index < length) {

         data[index*5+2] = qName;

     } else {

         badIndex(index);

     }

     }

     /**

      * Set the type of a specific attribute.

      *

      * @param index The index of the attribute (zero-based).

      * @param type The attribute's type.

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void setType (int index, String type)

     {

     if (index >= 0 && index < length) {

         data[index*5+3] = type;

     } else {

         badIndex(index);

     }

     }

     /**

      * Set the value of a specific attribute.

      *

      * @param index The index of the attribute (zero-based).

      * @param value The attribute's value.

      * @exception java.lang.ArrayIndexOutOfBoundsException When the

      *            supplied index does not point to an attribute

      *            in the list.

      */

     public void setValue (int index, String value)

     {

     if (index >= 0 && index < length) {

         data[index*5+4] = value;

     } else {

         badIndex(index);

     }

     }

     ////////////////////////////////////////////////////////////////////

     // Internal methods.

     ////////////////////////////////////////////////////////////////////

     /**

      * Ensure the internal array's capacity.

      *

      * @param n The minimum number of attributes that the array must

      *        be able to hold.

      */

     private void ensureCapacity (int n)

     {

     if (n > 0 && (data == null || data.length==0)) {

         data = new String[25];

     }

     int max = data.length;

     if (max >= n * 5) {

         return;

     }

     while (max < n * 5) {

         max *= 2;

     }

     String newData[] = new String[max];

     System.arraycopy(data, 0, newData, 0, length*5);

     data = newData;

     }

     /**

      * Report a bad array index in a manipulator.

      *

      * @param index The index to report.

      * @exception java.lang.ArrayIndexOutOfBoundsException Always.

      */

     private void badIndex (int index)

     throws ArrayIndexOutOfBoundsException

     {

     String msg =

         "Attempt to modify attribute at illegal index: " + index;

     throw new ArrayIndexOutOfBoundsException(msg);

     }

     ////////////////////////////////////////////////////////////////////

     // Internal state.

     ////////////////////////////////////////////////////////////////////

     int length;

     String data [];

 }

 // end of AttributesImpl.java