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The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing. ZAP provides automated scanners as well as a set of tools that allow you to find security vulnerabilities manually.

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/*
 *
 * Paros and its related class files.
 *
 * Paros is an HTTP/HTTPS proxy for assessing web application security.
 * Copyright (C) 2003-2004 Chinotec Technologies Company
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the Clarified Artistic License
 * as published by the Free Software Foundation.
 *
 * This program 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
 * Clarified Artistic License for more details.
 *
 * You should have received a copy of the Clarified Artistic License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
// ZAP: 2013/03/03 Issue 546: Remove all template Javadoc comments
// ZAP: 2013/03/03 Issue 547: Deprecate unused classes and methods
// ZAP: 2016/09/26 JavaDoc tweaks
// ZAP: 2019/06/01 Normalise line endings.
// ZAP: 2019/06/05 Normalise format/style.
package org.parosproxy.paros.network;

/** @deprecated No longer used/needed. It will be removed in a future release. */
@Deprecated
public class ByteVector {

    private static final int INITIAL_SIZE = 4096;
    private byte[] buf = null;
    private int bufLen = 0;
    private boolean changed = true;

    public ByteVector() {
        buf = new byte[INITIAL_SIZE];
    }

    public ByteVector(int capacity) {
        buf = new byte[capacity];
    }

    void ensureCapacity(int minimumCapacity) {

        if (buf.length - bufLen >= minimumCapacity) {
            // enough buf, no expand needed.
            return;
        }

        // expand needed

        int expandLength = buf.length * 2;

        if (expandLength - bufLen < minimumCapacity) {
            expandLength = bufLen + minimumCapacity;
        }

        byte[] newBuf = new byte[expandLength];
        System.arraycopy(buf, 0, newBuf, 0, bufLen);
        buf = newBuf;
    }

    public synchronized void append(byte[] b, int offset, int length) {

        ensureCapacity(length);
        System.arraycopy(b, offset, buf, bufLen, length);
        bufLen += length;
        changed = true;
    }

    public void append(byte[] b, int length) {
        append(b, 0, length);
    }

    public void append(byte[] b) {
        append(b, 0, b.length);
    }

    /**
     * Return the current byte array containing the bytes.
     *
     * @return a copy of the byte array
     */
    public byte[] getBytes() {
        if (!changed) {
            return buf;
        }

        byte[] newBuf = new byte[bufLen];
        System.arraycopy(buf, 0, newBuf, 0, bufLen);
        buf = newBuf;
        return buf;
    }

    public int length() {
        return bufLen;
    }

    public void setLength(int length) {

        if (length <= bufLen) {
            bufLen = length;
            return;
        } else {
            byte[] newBuf = new byte[length];
            System.arraycopy(buf, 0, newBuf, 0, bufLen);
            buf = newBuf;
        }
    }
}