aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: // AttributesImpl.java - default implementation of Attributes.
aoqi@0: // Written by David Megginson, sax@megginson.com
aoqi@0: // NO WARRANTY!  This class is in the public domain.
aoqi@0: 
aoqi@0: // $Id: AttributesImpl.java,v 1.4 2002/09/29 02:55:48 okajima Exp $
aoqi@0: 
aoqi@0: //fixed bug at removeAttribute!! by Daisuke OKAJIMA 2002.4.21
aoqi@0: 
aoqi@0: package com.sun.tools.internal.jxc.gen.config;
aoqi@0: 
aoqi@0: import org.xml.sax.Attributes;
aoqi@0: 
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Default implementation of the Attributes interface.
aoqi@0:  *
aoqi@0:  * <blockquote>
aoqi@0:  * <em>This module, both source code and documentation, is in the
aoqi@0:  * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
aoqi@0:  * </blockquote>
aoqi@0:  *
aoqi@0:  * <p>This class provides a default implementation of the SAX2
aoqi@0:  * {@link org.xml.sax.Attributes Attributes} interface, with the
aoqi@0:  * addition of manipulators so that the list can be modified or
aoqi@0:  * reused.</p>
aoqi@0:  *
aoqi@0:  * <p>There are two typical uses of this class:</p>
aoqi@0:  *
aoqi@0:  * <ol>
aoqi@0:  * <li>to take a persistent snapshot of an Attributes object
aoqi@0:  *  in a {@link org.xml.sax.ContentHandler#startElement startElement} event; or</li>
aoqi@0:  * <li>to construct or modify an Attributes object in a SAX2 driver or filter.</li>
aoqi@0:  * </ol>
aoqi@0:  *
aoqi@0:  * <p>This class replaces the now-deprecated SAX1 {@link
aoqi@0:  * org.xml.sax.helpers.AttributeListImpl AttributeListImpl}
aoqi@0:  * class; in addition to supporting the updated Attributes
aoqi@0:  * interface rather than the deprecated {@link org.xml.sax.AttributeList
aoqi@0:  * AttributeList} interface, it also includes a much more efficient
aoqi@0:  * implementation using a single array rather than a set of Vectors.</p>
aoqi@0:  *
aoqi@0:  * <p><b>
aoqi@0:  *     Auto-generated, do not edit.
aoqi@0:  * </b></p>
aoqi@0:  * @since SAX 2.0
aoqi@0:  * @author David Megginson,
aoqi@0:  *         <a href="mailto:sax@megginson.com">sax@megginson.com</a>
aoqi@0:  * @version 2.0
aoqi@0:  */
aoqi@0: public class AttributesImpl implements Attributes
aoqi@0: {
aoqi@0: 
aoqi@0: 
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0:     // Constructors.
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Construct a new, empty AttributesImpl object.
aoqi@0:      */
aoqi@0:     public AttributesImpl ()
aoqi@0:     {
aoqi@0:     length = 0;
aoqi@0:     data = null;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Copy an existing Attributes object.
aoqi@0:      *
aoqi@0:      * <p>This constructor is especially useful inside a
aoqi@0:      * {@link org.xml.sax.ContentHandler#startElement startElement} event.</p>
aoqi@0:      *
aoqi@0:      * @param atts The existing Attributes object.
aoqi@0:      */
aoqi@0:     public AttributesImpl (Attributes atts)
aoqi@0:     {
aoqi@0:     setAttributes(atts);
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0:     // Implementation of org.xml.sax.Attributes.
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return the number of attributes in the list.
aoqi@0:      *
aoqi@0:      * @return The number of attributes in the list.
aoqi@0:      * @see org.xml.sax.Attributes#getLength
aoqi@0:      */
aoqi@0:     public int getLength ()
aoqi@0:     {
aoqi@0:     return length;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return an attribute's Namespace URI.
aoqi@0:      *
aoqi@0:      * @param index The attribute's index (zero-based).
aoqi@0:      * @return The Namespace URI, the empty string if none is
aoqi@0:      *         available, or null if the index is out of range.
aoqi@0:      * @see org.xml.sax.Attributes#getURI
aoqi@0:      */
aoqi@0:     public String getURI (int index)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         return data[index*5];
aoqi@0:     } else {
aoqi@0:         return null;
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return an attribute's local name.
aoqi@0:      *
aoqi@0:      * @param index The attribute's index (zero-based).
aoqi@0:      * @return The attribute's local name, the empty string if
aoqi@0:      *         none is available, or null if the index if out of range.
aoqi@0:      * @see org.xml.sax.Attributes#getLocalName
aoqi@0:      */
aoqi@0:     public String getLocalName (int index)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         return data[index*5+1];
aoqi@0:     } else {
aoqi@0:         return null;
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return an attribute's qualified (prefixed) name.
aoqi@0:      *
aoqi@0:      * @param index The attribute's index (zero-based).
aoqi@0:      * @return The attribute's qualified name, the empty string if
aoqi@0:      *         none is available, or null if the index is out of bounds.
aoqi@0:      * @see org.xml.sax.Attributes#getQName
aoqi@0:      */
aoqi@0:     public String getQName (int index)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         return data[index*5+2];
aoqi@0:     } else {
aoqi@0:         return null;
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return an attribute's type by index.
aoqi@0:      *
aoqi@0:      * @param index The attribute's index (zero-based).
aoqi@0:      * @return The attribute's type, "CDATA" if the type is unknown, or null
aoqi@0:      *         if the index is out of bounds.
aoqi@0:      * @see org.xml.sax.Attributes#getType(int)
aoqi@0:      */
aoqi@0:     public String getType (int index)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         return data[index*5+3];
aoqi@0:     } else {
aoqi@0:         return null;
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return an attribute's value by index.
aoqi@0:      *
aoqi@0:      * @param index The attribute's index (zero-based).
aoqi@0:      * @return The attribute's value or null if the index is out of bounds.
aoqi@0:      * @see org.xml.sax.Attributes#getValue(int)
aoqi@0:      */
aoqi@0:     public String getValue (int index)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         return data[index*5+4];
aoqi@0:     } else {
aoqi@0:         return null;
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look up an attribute's index by Namespace name.
aoqi@0:      *
aoqi@0:      * <p>In many cases, it will be more efficient to look up the name once and
aoqi@0:      * use the index query methods rather than using the name query methods
aoqi@0:      * repeatedly.</p>
aoqi@0:      *
aoqi@0:      * @param uri The attribute's Namespace URI, or the empty
aoqi@0:      *        string if none is available.
aoqi@0:      * @param localName The attribute's local name.
aoqi@0:      * @return The attribute's index, or -1 if none matches.
aoqi@0:      * @see org.xml.sax.Attributes#getIndex(java.lang.String,java.lang.String)
aoqi@0:      */
aoqi@0:     public int getIndex (String uri, String localName)
aoqi@0:     {
aoqi@0:     int max = length * 5;
aoqi@0:     for (int i = 0; i < max; i += 5) {
aoqi@0:         if (data[i].equals(uri) && data[i+1].equals(localName)) {
aoqi@0:         return i / 5;
aoqi@0:         }
aoqi@0:     }
aoqi@0:     return -1;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look up an attribute's index by qualified (prefixed) name.
aoqi@0:      *
aoqi@0:      * @param qName The qualified name.
aoqi@0:      * @return The attribute's index, or -1 if none matches.
aoqi@0:      * @see org.xml.sax.Attributes#getIndex(java.lang.String)
aoqi@0:      */
aoqi@0:     public int getIndex (String qName)
aoqi@0:     {
aoqi@0:     int max = length * 5;
aoqi@0:     for (int i = 0; i < max; i += 5) {
aoqi@0:         if (data[i+2].equals(qName)) {
aoqi@0:         return i / 5;
aoqi@0:         }
aoqi@0:     }
aoqi@0:     return -1;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look up an attribute's type by Namespace-qualified name.
aoqi@0:      *
aoqi@0:      * @param uri The Namespace URI, or the empty string for a name
aoqi@0:      *        with no explicit Namespace URI.
aoqi@0:      * @param localName The local name.
aoqi@0:      * @return The attribute's type, or null if there is no
aoqi@0:      *         matching attribute.
aoqi@0:      * @see org.xml.sax.Attributes#getType(java.lang.String,java.lang.String)
aoqi@0:      */
aoqi@0:     public String getType (String uri, String localName)
aoqi@0:     {
aoqi@0:     int max = length * 5;
aoqi@0:     for (int i = 0; i < max; i += 5) {
aoqi@0:         if (data[i].equals(uri) && data[i+1].equals(localName)) {
aoqi@0:         return data[i+3];
aoqi@0:         }
aoqi@0:     }
aoqi@0:     return null;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look up an attribute's type by qualified (prefixed) name.
aoqi@0:      *
aoqi@0:      * @param qName The qualified name.
aoqi@0:      * @return The attribute's type, or null if there is no
aoqi@0:      *         matching attribute.
aoqi@0:      * @see org.xml.sax.Attributes#getType(java.lang.String)
aoqi@0:      */
aoqi@0:     public String getType (String qName)
aoqi@0:     {
aoqi@0:     int max = length * 5;
aoqi@0:     for (int i = 0; i < max; i += 5) {
aoqi@0:         if (data[i+2].equals(qName)) {
aoqi@0:         return data[i+3];
aoqi@0:         }
aoqi@0:     }
aoqi@0:     return null;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look up an attribute's value by Namespace-qualified name.
aoqi@0:      *
aoqi@0:      * @param uri The Namespace URI, or the empty string for a name
aoqi@0:      *        with no explicit Namespace URI.
aoqi@0:      * @param localName The local name.
aoqi@0:      * @return The attribute's value, or null if there is no
aoqi@0:      *         matching attribute.
aoqi@0:      * @see org.xml.sax.Attributes#getValue(java.lang.String,java.lang.String)
aoqi@0:      */
aoqi@0:     public String getValue (String uri, String localName)
aoqi@0:     {
aoqi@0:     int max = length * 5;
aoqi@0:     for (int i = 0; i < max; i += 5) {
aoqi@0:         if (data[i].equals(uri) && data[i+1].equals(localName)) {
aoqi@0:         return data[i+4];
aoqi@0:         }
aoqi@0:     }
aoqi@0:     return null;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Look up an attribute's value by qualified (prefixed) name.
aoqi@0:      *
aoqi@0:      * @param qName The qualified name.
aoqi@0:      * @return The attribute's value, or null if there is no
aoqi@0:      *         matching attribute.
aoqi@0:      * @see org.xml.sax.Attributes#getValue(java.lang.String)
aoqi@0:      */
aoqi@0:     public String getValue (String qName)
aoqi@0:     {
aoqi@0:     int max = length * 5;
aoqi@0:     for (int i = 0; i < max; i += 5) {
aoqi@0:         if (data[i+2].equals(qName)) {
aoqi@0:         return data[i+4];
aoqi@0:         }
aoqi@0:     }
aoqi@0:     return null;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0:     // Manipulators.
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Clear the attribute list for reuse.
aoqi@0:      *
aoqi@0:      * <p>Note that no memory is actually freed by this call:
aoqi@0:      * the current arrays are kept so that they can be
aoqi@0:      * reused.</p>
aoqi@0:      */
aoqi@0:     public void clear ()
aoqi@0:     {
aoqi@0:     length = 0;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Copy an entire Attributes object.
aoqi@0:      *
aoqi@0:      * <p>It may be more efficient to reuse an existing object
aoqi@0:      * rather than constantly allocating new ones.</p>
aoqi@0:      *
aoqi@0:      * @param atts The attributes to copy.
aoqi@0:      */
aoqi@0:     public void setAttributes (Attributes atts)
aoqi@0:     {
aoqi@0:     clear();
aoqi@0:     length = atts.getLength();
aoqi@0:     data = new String[length*5];
aoqi@0:     for (int i = 0; i < length; i++) {
aoqi@0:         data[i*5] = atts.getURI(i);
aoqi@0:         data[i*5+1] = atts.getLocalName(i);
aoqi@0:         data[i*5+2] = atts.getQName(i);
aoqi@0:         data[i*5+3] = atts.getType(i);
aoqi@0:         data[i*5+4] = atts.getValue(i);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Add an attribute to the end of the list.
aoqi@0:      *
aoqi@0:      * <p>For the sake of speed, this method does no checking
aoqi@0:      * to see if the attribute is already in the list: that is
aoqi@0:      * the responsibility of the application.</p>
aoqi@0:      *
aoqi@0:      * @param uri The Namespace URI, or the empty string if
aoqi@0:      *        none is available or Namespace processing is not
aoqi@0:      *        being performed.
aoqi@0:      * @param localName The local name, or the empty string if
aoqi@0:      *        Namespace processing is not being performed.
aoqi@0:      * @param qName The qualified (prefixed) name, or the empty string
aoqi@0:      *        if qualified names are not available.
aoqi@0:      * @param type The attribute type as a string.
aoqi@0:      * @param value The attribute value.
aoqi@0:      */
aoqi@0:     public void addAttribute (String uri, String localName, String qName,
aoqi@0:                   String type, String value)
aoqi@0:     {
aoqi@0:     ensureCapacity(length+1);
aoqi@0:     data[length*5] = uri;
aoqi@0:     data[length*5+1] = localName;
aoqi@0:     data[length*5+2] = qName;
aoqi@0:     data[length*5+3] = type;
aoqi@0:     data[length*5+4] = value;
aoqi@0:     length++;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set an attribute in the list.
aoqi@0:      *
aoqi@0:      * <p>For the sake of speed, this method does no checking
aoqi@0:      * for name conflicts or well-formedness: such checks are the
aoqi@0:      * responsibility of the application.</p>
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @param uri The Namespace URI, or the empty string if
aoqi@0:      *        none is available or Namespace processing is not
aoqi@0:      *        being performed.
aoqi@0:      * @param localName The local name, or the empty string if
aoqi@0:      *        Namespace processing is not being performed.
aoqi@0:      * @param qName The qualified name, or the empty string
aoqi@0:      *        if qualified names are not available.
aoqi@0:      * @param type The attribute type as a string.
aoqi@0:      * @param value The attribute value.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void setAttribute (int index, String uri, String localName,
aoqi@0:                   String qName, String type, String value)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         data[index*5] = uri;
aoqi@0:         data[index*5+1] = localName;
aoqi@0:         data[index*5+2] = qName;
aoqi@0:         data[index*5+3] = type;
aoqi@0:         data[index*5+4] = value;
aoqi@0:     } else {
aoqi@0:         badIndex(index);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Remove an attribute from the list.
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void removeAttribute (int index)
aoqi@0:     {
aoqi@0:         if (index >= 0 && index < length) {
aoqi@0:             if (index < length - 1) {
aoqi@0:                 System.arraycopy(data, (index+1)*5, data, index*5,
aoqi@0:                          (length-index-1)*5);
aoqi@0:             }
aoqi@0:             length--;
aoqi@0:         } else {
aoqi@0:             badIndex(index);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set the Namespace URI of a specific attribute.
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @param uri The attribute's Namespace URI, or the empty
aoqi@0:      *        string for none.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void setURI (int index, String uri)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         data[index*5] = uri;
aoqi@0:     } else {
aoqi@0:         badIndex(index);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set the local name of a specific attribute.
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @param localName The attribute's local name, or the empty
aoqi@0:      *        string for none.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void setLocalName (int index, String localName)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         data[index*5+1] = localName;
aoqi@0:     } else {
aoqi@0:         badIndex(index);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set the qualified name of a specific attribute.
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @param qName The attribute's qualified name, or the empty
aoqi@0:      *        string for none.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void setQName (int index, String qName)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         data[index*5+2] = qName;
aoqi@0:     } else {
aoqi@0:         badIndex(index);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set the type of a specific attribute.
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @param type The attribute's type.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void setType (int index, String type)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         data[index*5+3] = type;
aoqi@0:     } else {
aoqi@0:         badIndex(index);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set the value of a specific attribute.
aoqi@0:      *
aoqi@0:      * @param index The index of the attribute (zero-based).
aoqi@0:      * @param value The attribute's value.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException When the
aoqi@0:      *            supplied index does not point to an attribute
aoqi@0:      *            in the list.
aoqi@0:      */
aoqi@0:     public void setValue (int index, String value)
aoqi@0:     {
aoqi@0:     if (index >= 0 && index < length) {
aoqi@0:         data[index*5+4] = value;
aoqi@0:     } else {
aoqi@0:         badIndex(index);
aoqi@0:     }
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0:     // Internal methods.
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Ensure the internal array's capacity.
aoqi@0:      *
aoqi@0:      * @param n The minimum number of attributes that the array must
aoqi@0:      *        be able to hold.
aoqi@0:      */
aoqi@0:     private void ensureCapacity (int n)
aoqi@0:     {
aoqi@0:     if (n > 0 && (data == null || data.length==0)) {
aoqi@0:         data = new String[25];
aoqi@0:     }
aoqi@0: 
aoqi@0:     int max = data.length;
aoqi@0:     if (max >= n * 5) {
aoqi@0:         return;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     while (max < n * 5) {
aoqi@0:         max *= 2;
aoqi@0:     }
aoqi@0:     String newData[] = new String[max];
aoqi@0:     System.arraycopy(data, 0, newData, 0, length*5);
aoqi@0:     data = newData;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Report a bad array index in a manipulator.
aoqi@0:      *
aoqi@0:      * @param index The index to report.
aoqi@0:      * @exception java.lang.ArrayIndexOutOfBoundsException Always.
aoqi@0:      */
aoqi@0:     private void badIndex (int index)
aoqi@0:     throws ArrayIndexOutOfBoundsException
aoqi@0:     {
aoqi@0:     String msg =
aoqi@0:         "Attempt to modify attribute at illegal index: " + index;
aoqi@0:     throw new ArrayIndexOutOfBoundsException(msg);
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0:     // Internal state.
aoqi@0:     ////////////////////////////////////////////////////////////////////
aoqi@0: 
aoqi@0:     int length;
aoqi@0:     String data [];
aoqi@0: 
aoqi@0: }
aoqi@0: 
aoqi@0: // end of AttributesImpl.java