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/*
* Copyright (c) 2011-2015, Isode Limited, London, England.
* All rights reserved.
*/
package com.isode.stroke.base;
import com.isode.stroke.base.SafeByteArray;
import com.isode.stroke.base.ByteArray;
import java.io.UnsupportedEncodingException;
/**
* It's currently not actually secure,
* and that we might consider if http://developer.android.com/reference/java/nio/ByteBuffer.html#allocateDirect(int) could help us in the future.
*/
public class SafeByteArray extends ByteArray {
public SafeByteArray() {
}
public SafeByteArray(String s) {
super(s);
}
public SafeByteArray(ByteArray b) {
this.append(b.getData());
}
/**
* Creates a new SafeByteArray object containing all
* the elements from two existing ByteArrays (immutable add).
*
* @param a an existing SafeByteArray. Must not be null, but may be empty.
* @param b an existing SafeByteArray. Must not be null, but may be empty.
* @return a new SafeByteArray containing all the elements of <em>a</em>
* followed by all the elements of <em>b</em>.
*/
public static SafeByteArray plus(SafeByteArray a, SafeByteArray b) {
SafeByteArray x = new SafeByteArray().append(a.getData());
x.append(b);
return x;
}
/**
* Updates the SafeByteArray by adding all the elements
* of another SafeByteArray to the end of the array (mutable add).
* @param b an existing SafeByteArray. Must not be null, but may be empty
* @return a reference to the updated object
*/
public SafeByteArray append(ByteArray b) {
append(b.getData());
return this;
}
/**
* Updates the SafeByteArray by adding all the bytes
* in a byte[] to the end of the array (mutable add).
*
* @param b an array of bytes. Must not be null, but may contain zero
* elements.
*
* @return a reference to the updated object
*/
public SafeByteArray append(byte[] b) {
return append(b, b.length);
}
/** Mutable add */
public SafeByteArray append(byte[] b, int len) {
for (int i = 0; i < len; i++) {
append(b[i]);
}
return this;
}
/**
* Updates the SafeByteArray by adding a single byte
* value to the end of the array (mutable add).
* @param b a single byte
* @return a reference to the updated object
*/
public SafeByteArray append(byte b) {
dataCopy_ = null; /* Invalidate cache */
data_.add(Byte.valueOf(b));
return this;
}
/**
* Updates the SafeByteArray by adding all the bytes
* obtained by UTF-8 encoding the provided String to the end of the array (mutable add).
* @param s a String that must not be null.
* @return a reference to the updated object.
*/
public SafeByteArray append(String s) {
byte[] bytes;
try {
bytes = s.getBytes("UTF-8");
} catch (UnsupportedEncodingException ex) {
throw new IllegalStateException("JVM has no 'UTF-8' encoding");
}
append(bytes);
return this;
}
}
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Swift