content: /*
   * Copyright (c) 2017, Andreas Fagschlunger. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *   - Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *
   *   - 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
   * 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.
   */
  
  package at.o2xfs.win32;
  
  import java.nio.charset.StandardCharsets;
  import java.util.Arrays;
  
  /**
   * Pointer class for a double-null-terminated string.
   *
   * @author Andreas Fagschlunger
   */
  public class LPZZSTR extends Pointer implements ASCII, ValueType<String[]> {
  
  	public LPZZSTR() {
  		super();
  	}
  
  	public LPZZSTR(Pointer p) {
  		super(p.getBuffer());
  	}
  
  	public LPZZSTR(String[] value) {
  		super();
  		allocate();
  		set(value);
  	}
  
  	@Override
  	public void set(String[] value) {
  		int length = 2;
  		for (String each : value) {
  			length += each.length() + 1;
  		}
  		byte[] dest = new byte[length];
  		int destPos = 0;
  		for (String each : value) {
  			byte[] src = each.getBytes(StandardCharsets.US_ASCII);
  			System.arraycopy(src, 0, dest, destPos, src.length);
  			destPos += src.length + 1;
  		}
  		pointTo(new ByteArray(dest));
  	}
  
  	@Override
  	public String[] get() {
  		final String zzString = readZZString();
  		return zzString.split("" + NUL);
  	}
  
  	private String readZZString() {
  		if (NULL.equals(this)) {
  			return null;
  		}
  		for (int length = 2;; length++) {
  			byte[] bytes = buffer(length).get();
  			if (bytes[bytes.length - 1] == NUL && bytes[bytes.length - 2] == NUL) {
  				return new String(bytes, StandardCharsets.US_ASCII);
  			}
  		}
  	}
  
  	@Override
  	public String toString() {
  		if (NULL.equals(this)) {
  			return "";
  		}
  		return Arrays.toString(get());
  	}
  }