1 files changed, 230 insertions, 0 deletions
diff --git a/src/share/classes/com/sun/org/apache/xerces/internal/util/XMLStringBuffer.java b/src/share/classes/com/sun/org/apache/xerces/internal/util/XMLStringBuffer.java
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+++ b/src/share/classes/com/sun/org/apache/xerces/internal/util/XMLStringBuffer.java
@@ -0,0 +1,230 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+/*
+ * The Apache Software License, Version 1.1
+ *
+ *
+ * Copyright (c) 1999-2002 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Xerces" and "Apache Software Foundation" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache",
+ *    nor may "Apache" appear in their name, without prior written
+ *    permission of the Apache Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation and was
+ * originally based on software copyright (c) 1999, International
+ * Business Machines, Inc., http://www.apache.org.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+package com.sun.org.apache.xerces.internal.util;
+
+import com.sun.org.apache.xerces.internal.xni.XMLString;
+
+/**
+ * XMLString is a structure used to pass character arrays. However,
+ * XMLStringBuffer is a buffer in which characters can be appended
+ * and extends XMLString so that it can be passed to methods
+ * expecting an XMLString object. This is a safe operation because
+ * it is assumed that any callee will <strong>not</strong> modify
+ * the contents of the XMLString structure.
+ * <p>
+ * The contents of the string are managed by the string buffer. As
+ * characters are appended, the string buffer will grow as needed.
+ * <p>
+ * <strong>Note:</strong> Never set the <code>ch</code>,
+ * <code>offset</code>, and <code>length</code> fields directly.
+ * These fields are managed by the string buffer. In order to reset
+ * the buffer, call <code>clear()</code>.
+ *
+ * @author Andy Clark, IBM
+ * @author Eric Ye, IBM
+ *
+ */
+public class XMLStringBuffer
+extends XMLString {
+
+    //
+    // Constants
+    //
+
+
+    /** Default buffer size (32). */
+    public static final int DEFAULT_SIZE = 32;
+
+    //
+    // Data
+    //
+
+    //
+    // Constructors
+    //
+
+    /**
+     *
+     */
+    public XMLStringBuffer() {
+        this(DEFAULT_SIZE);
+    } // <init>()
+
+    /**
+     *
+     *
+     * @param size
+     */
+    public XMLStringBuffer(int size) {
+        ch = new char[size];
+    } // <init>(int)
+
+    /** Constructs a string buffer from a char. */
+    public XMLStringBuffer(char c) {
+        this(1);
+        append(c);
+    } // <init>(char)
+
+    /** Constructs a string buffer from a String. */
+    public XMLStringBuffer(String s) {
+        this(s.length());
+        append(s);
+    } // <init>(String)
+
+    /** Constructs a string buffer from the specified character array. */
+    public XMLStringBuffer(char[] ch, int offset, int length) {
+        this(length);
+        append(ch, offset, length);
+    } // <init>(char[],int,int)
+
+    /** Constructs a string buffer from the specified XMLString. */
+    public XMLStringBuffer(XMLString s) {
+        this(s.length);
+        append(s);
+    } // <init>(XMLString)
+
+    //
+    // Public methods
+    //
+
+    /** Clears the string buffer. */
+    public void clear() {
+        offset = 0;
+        length = 0;
+    }
+
+    /**
+     * append
+     *
+     * @param c
+     */
+    public void append(char c) {
+        if(this.length + 1 > this.ch.length){
+            int newLength = this.ch.length * 2 ;
+            if(newLength < this.ch.length + DEFAULT_SIZE){
+                newLength = this.ch.length + DEFAULT_SIZE;
+            }
+            char [] tmp = new char[newLength];
+            System.arraycopy(this.ch, 0, tmp, 0, this.length);
+            this.ch = tmp;
+        }
+        this.ch[this.length] = c ;
+        this.length++;
+    } // append(char)
+
+    /**
+     * append
+     *
+     * @param s
+     */
+    public void append(String s) {
+        int length = s.length();
+        if (this.length + length > this.ch.length) {
+            int newLength = this.ch.length * 2 ;
+            if(newLength < this.ch.length + length + DEFAULT_SIZE){
+                newLength = this.ch.length + length+ DEFAULT_SIZE;
+            }
+
+            char[] newch = new char[newLength];
+            System.arraycopy(this.ch, 0, newch, 0, this.length);
+            this.ch = newch;
+        }
+        s.getChars(0, length, this.ch, this.length);
+        this.length += length;
+    } // append(String)
+
+    /**
+     * append
+     *
+     * @param ch
+     * @param offset
+     * @param length
+     */
+    public void append(char[] ch, int offset, int length) {
+        if (this.length + length > this.ch.length) {
+            int newLength = this.ch.length * 2 ;
+            if(newLength < this.ch.length + length + DEFAULT_SIZE){
+                newLength = this.ch.length + length + DEFAULT_SIZE;
+            }
+            char[] newch = new char[newLength];
+            System.arraycopy(this.ch, 0, newch, 0, this.length);
+            this.ch = newch;
+        }
+        //making the code more robust as it would handle null or 0 length data,
+        //add the data only when it contains some thing
+        if(ch != null && length > 0){
+            System.arraycopy(ch, offset, this.ch, this.length, length);
+            this.length += length;
+        }
+    } // append(char[],int,int)
+
+    /**
+     * append
+     *
+     * @param s
+     */
+    public void append(XMLString s) {
+        append(s.ch, s.offset, s.length);
+    } // append(XMLString)
+
+
+} // class XMLStringBuffer