diff options
author | Moxie Marlinspike <moxie@thoughtcrime.org> | 2015-01-08 13:48:49 -0800 |
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committer | Moxie Marlinspike <moxie@thoughtcrime.org> | 2015-01-08 14:09:01 -0800 |
commit | 6445ea5f13850f42c3952bd06a2369317683ed88 (patch) | |
tree | f2bb37c8cf4710ff6a6a37a3e7e702c5a21ca504 /src/main/java/org/whispersystems/libaxolotl/util/ByteUtil.java | |
parent | a4d8f7f6a4c4e9e89db35f299e558dceee2362a1 (diff) |
Break project up into Java and Android build/test.
Diffstat (limited to 'src/main/java/org/whispersystems/libaxolotl/util/ByteUtil.java')
-rw-r--r-- | src/main/java/org/whispersystems/libaxolotl/util/ByteUtil.java | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/src/main/java/org/whispersystems/libaxolotl/util/ByteUtil.java b/src/main/java/org/whispersystems/libaxolotl/util/ByteUtil.java deleted file mode 100644 index c213ba0b..00000000 --- a/src/main/java/org/whispersystems/libaxolotl/util/ByteUtil.java +++ /dev/null @@ -1,248 +0,0 @@ -/** - * Copyright (C) 2014 Open Whisper Systems - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * 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 - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -package org.whispersystems.libaxolotl.util; - -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.text.ParseException; - -public class ByteUtil { - - public static byte[] combine(byte[]... elements) { - try { - ByteArrayOutputStream baos = new ByteArrayOutputStream(); - - for (byte[] element : elements) { - baos.write(element); - } - - return baos.toByteArray(); - } catch (IOException e) { - throw new AssertionError(e); - } - } - - public static byte[][] split(byte[] input, int firstLength, int secondLength) { - byte[][] parts = new byte[2][]; - - parts[0] = new byte[firstLength]; - System.arraycopy(input, 0, parts[0], 0, firstLength); - - parts[1] = new byte[secondLength]; - System.arraycopy(input, firstLength, parts[1], 0, secondLength); - - return parts; - } - - public static byte[][] split(byte[] input, int firstLength, int secondLength, int thirdLength) - throws ParseException - { - if (input == null || firstLength < 0 || secondLength < 0 || thirdLength < 0 || - input.length < firstLength + secondLength + thirdLength) - { - throw new ParseException("Input too small: " + (input == null ? null : Hex.toString(input)), 0); - } - - byte[][] parts = new byte[3][]; - - parts[0] = new byte[firstLength]; - System.arraycopy(input, 0, parts[0], 0, firstLength); - - parts[1] = new byte[secondLength]; - System.arraycopy(input, firstLength, parts[1], 0, secondLength); - - parts[2] = new byte[thirdLength]; - System.arraycopy(input, firstLength + secondLength, parts[2], 0, thirdLength); - - return parts; - } - - public static byte[] trim(byte[] input, int length) { - byte[] result = new byte[length]; - System.arraycopy(input, 0, result, 0, result.length); - - return result; - } - - public static byte[] copyFrom(byte[] input) { - byte[] output = new byte[input.length]; - System.arraycopy(input, 0, output, 0, output.length); - - return output; - } - - public static byte intsToByteHighAndLow(int highValue, int lowValue) { - return (byte)((highValue << 4 | lowValue) & 0xFF); - } - - public static int highBitsToInt(byte value) { - return (value & 0xFF) >> 4; - } - - public static int lowBitsToInt(byte value) { - return (value & 0xF); - } - - public static int highBitsToMedium(int value) { - return (value >> 12); - } - - public static int lowBitsToMedium(int value) { - return (value & 0xFFF); - } - - public static byte[] shortToByteArray(int value) { - byte[] bytes = new byte[2]; - shortToByteArray(bytes, 0, value); - return bytes; - } - - public static int shortToByteArray(byte[] bytes, int offset, int value) { - bytes[offset+1] = (byte)value; - bytes[offset] = (byte)(value >> 8); - return 2; - } - - public static int shortToLittleEndianByteArray(byte[] bytes, int offset, int value) { - bytes[offset] = (byte)value; - bytes[offset+1] = (byte)(value >> 8); - return 2; - } - - public static byte[] mediumToByteArray(int value) { - byte[] bytes = new byte[3]; - mediumToByteArray(bytes, 0, value); - return bytes; - } - - public static int mediumToByteArray(byte[] bytes, int offset, int value) { - bytes[offset + 2] = (byte)value; - bytes[offset + 1] = (byte)(value >> 8); - bytes[offset] = (byte)(value >> 16); - return 3; - } - - public static byte[] intToByteArray(int value) { - byte[] bytes = new byte[4]; - intToByteArray(bytes, 0, value); - return bytes; - } - - public static int intToByteArray(byte[] bytes, int offset, int value) { - bytes[offset + 3] = (byte)value; - bytes[offset + 2] = (byte)(value >> 8); - bytes[offset + 1] = (byte)(value >> 16); - bytes[offset] = (byte)(value >> 24); - return 4; - } - - public static int intToLittleEndianByteArray(byte[] bytes, int offset, int value) { - bytes[offset] = (byte)value; - bytes[offset+1] = (byte)(value >> 8); - bytes[offset+2] = (byte)(value >> 16); - bytes[offset+3] = (byte)(value >> 24); - return 4; - } - - public static byte[] longToByteArray(long l) { - byte[] bytes = new byte[8]; - longToByteArray(bytes, 0, l); - return bytes; - } - - public static int longToByteArray(byte[] bytes, int offset, long value) { - bytes[offset + 7] = (byte)value; - bytes[offset + 6] = (byte)(value >> 8); - bytes[offset + 5] = (byte)(value >> 16); - bytes[offset + 4] = (byte)(value >> 24); - bytes[offset + 3] = (byte)(value >> 32); - bytes[offset + 2] = (byte)(value >> 40); - bytes[offset + 1] = (byte)(value >> 48); - bytes[offset] = (byte)(value >> 56); - return 8; - } - - public static int longTo4ByteArray(byte[] bytes, int offset, long value) { - bytes[offset + 3] = (byte)value; - bytes[offset + 2] = (byte)(value >> 8); - bytes[offset + 1] = (byte)(value >> 16); - bytes[offset + 0] = (byte)(value >> 24); - return 4; - } - - public static int byteArrayToShort(byte[] bytes) { - return byteArrayToShort(bytes, 0); - } - - public static int byteArrayToShort(byte[] bytes, int offset) { - return - (bytes[offset] & 0xff) << 8 | (bytes[offset + 1] & 0xff); - } - - // The SSL patented 3-byte Value. - public static int byteArrayToMedium(byte[] bytes, int offset) { - return - (bytes[offset] & 0xff) << 16 | - (bytes[offset + 1] & 0xff) << 8 | - (bytes[offset + 2] & 0xff); - } - - public static int byteArrayToInt(byte[] bytes) { - return byteArrayToInt(bytes, 0); - } - - public static int byteArrayToInt(byte[] bytes, int offset) { - return - (bytes[offset] & 0xff) << 24 | - (bytes[offset + 1] & 0xff) << 16 | - (bytes[offset + 2] & 0xff) << 8 | - (bytes[offset + 3] & 0xff); - } - - public static int byteArrayToIntLittleEndian(byte[] bytes, int offset) { - return - (bytes[offset + 3] & 0xff) << 24 | - (bytes[offset + 2] & 0xff) << 16 | - (bytes[offset + 1] & 0xff) << 8 | - (bytes[offset] & 0xff); - } - - public static long byteArrayToLong(byte[] bytes) { - return byteArrayToLong(bytes, 0); - } - - public static long byteArray4ToLong(byte[] bytes, int offset) { - return - ((bytes[offset + 0] & 0xffL) << 24) | - ((bytes[offset + 1] & 0xffL) << 16) | - ((bytes[offset + 2] & 0xffL) << 8) | - ((bytes[offset + 3] & 0xffL)); - } - - public static long byteArrayToLong(byte[] bytes, int offset) { - return - ((bytes[offset] & 0xffL) << 56) | - ((bytes[offset + 1] & 0xffL) << 48) | - ((bytes[offset + 2] & 0xffL) << 40) | - ((bytes[offset + 3] & 0xffL) << 32) | - ((bytes[offset + 4] & 0xffL) << 24) | - ((bytes[offset + 5] & 0xffL) << 16) | - ((bytes[offset + 6] & 0xffL) << 8) | - ((bytes[offset + 7] & 0xffL)); - } - -} |