/*
* Copyright (C) 2015 SoftIndex LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.datakernel.bytebuf;
import java.io.UnsupportedEncodingException;
public final class SerializationUtils {
private SerializationUtils() {
}
public static int write(byte[] buf, int off, byte[] bytes) {
return write(buf, off, bytes, 0, bytes.length);
}
public static int write(byte[] buf, int off, byte[] bytes, int bytesOff, int len) {
System.arraycopy(bytes, bytesOff, buf, off, len);
return off + len;
}
public static int writeBoolean(byte[] buf, int off, boolean v) {
return writeByte(buf, off, v ? (byte) 1 : 0);
}
public static int writeByte(byte[] buf, int off, byte v) {
buf[off] = v;
return off + 1;
}
public static int writeShort(byte[] buf, int off, short v) {
buf[off] = (byte) (v >>> 8);
buf[off + 1] = (byte) (v);
return off + 2;
}
public static int writeInt(byte[] buf, int off, int v) {
buf[off] = (byte) (v >>> 24);
buf[off + 1] = (byte) (v >>> 16);
buf[off + 2] = (byte) (v >>> 8);
buf[off + 3] = (byte) (v);
return off + 4;
}
public static int writeLong(byte[] buf, int off, long v) {
int high = (int) (v >>> 32);
int low = (int) v;
buf[off] = (byte) (high >>> 24);
buf[off + 1] = (byte) (high >>> 16);
buf[off + 2] = (byte) (high >>> 8);
buf[off + 3] = (byte) high;
buf[off + 4] = (byte) (low >>> 24);
buf[off + 5] = (byte) (low >>> 16);
buf[off + 6] = (byte) (low >>> 8);
buf[off + 7] = (byte) low;
return off + 8;
}
public static int writeVarInt(byte[] buf, int off, int v) {
if ((v & ~0x7F) == 0) {
buf[off] = (byte) v;
return off + 1;
}
buf[off] = (byte) ((v & 0x7F) | 0x80);
v >>>= 7;
if ((v & ~0x7F) == 0) {
buf[off + 1] = (byte) v;
return off + 2;
}
buf[off + 1] = (byte) ((v & 0x7F) | 0x80);
v >>>= 7;
if ((v & ~0x7F) == 0) {
buf[off + 2] = (byte) v;
return off + 3;
}
buf[off + 2] = (byte) ((v & 0x7F) | 0x80);
v >>>= 7;
if ((v & ~0x7F) == 0) {
buf[off + 3] = (byte) v;
return off + 4;
}
buf[off + 3] = (byte) ((v & 0x7F) | 0x80);
v >>>= 7;
buf[off + 4] = (byte) v;
return off + 5;
}
public static int writeVarLong(byte[] buf, int off, long v) {
if ((v & ~0x7F) == 0) {
return writeByte(buf, off, (byte) v);
} else {
off = writeByte(buf, off, (byte) ((v & 0x7F) | 0x80));
v >>>= 7;
if ((v & ~0x7F) == 0) {
off = writeByte(buf, off, (byte) v);
} else {
off = writeByte(buf, off, (byte) ((v & 0x7F) | 0x80));
v >>>= 7;
if ((v & ~0x7F) == 0) {
off = writeByte(buf, off, (byte) v);
} else {
off = writeByte(buf, off, (byte) ((v & 0x7F) | 0x80));
v >>>= 7;
if ((v & ~0x7F) == 0) {
off = writeByte(buf, off, (byte) v);
} else {
off = writeByte(buf, off, (byte) ((v & 0x7F) | 0x80));
v >>>= 7;
if ((v & ~0x7F) == 0) {
off = writeByte(buf, off, (byte) v);
} else {
off = writeByte(buf, off, (byte) ((v & 0x7F) | 0x80));
v >>>= 7;
if ((v & ~0x7F) == 0) {
off = writeByte(buf, off, (byte) v);
} else {
off = writeByte(buf, off, (byte) ((v & 0x7F) | 0x80));
v >>>= 7;
for (; ; ) {
if ((v & ~0x7FL) == 0) {
off = writeByte(buf, off, (byte) v);
return off;
} else {
off = writeByte(buf, off, (byte) (((int) v & 0x7F) | 0x80));
v >>>= 7;
}
}
}
}
}
}
}
}
return off;
}
public static int writeFloat(byte[] buf, int off, float v) {
return writeInt(buf, off, Float.floatToIntBits(v));
}
public static int writeDouble(byte[] buf, int off, double v) {
return writeLong(buf, off, Double.doubleToLongBits(v));
}
public static int writeChar(byte[] buf, int off, char v) {
writeByte(buf, off, (byte) (v >>> 8));
writeByte(buf, off + 1, (byte) (v));
return off + 2;
}
public static int writeIso88591(byte[] buf, int off, String s) {
int length = s.length();
off = writeVarInt(buf, off, length);
for (int i = 0; i < length; i++) {
int c = s.charAt(i);
buf[off++] = (byte) c;
}
return off;
}
public static int writeIso88591Nullable(byte[] buf, int off, String s) {
if (s == null) {
return writeByte(buf, off, (byte) 0);
}
int length = s.length();
off = writeVarInt(buf, off, length + 1);
for (int i = 0; i < length; i++) {
int c = s.charAt(i);
buf[off++] = (byte) c;
}
return off;
}
public static int writeJavaUTF8(byte[] buf, int off, String s) {
try {
byte[] bytes = s.getBytes("UTF-8");
off = writeVarInt(buf, off, bytes.length);
return write(buf, off, bytes);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException();
}
}
public static int writeJavaUTF8Nullable(byte[] buf, int off, String s) {
if (s == null) {
return writeByte(buf, off, (byte) 0);
}
try {
byte[] bytes = s.getBytes("UTF-8");
off = writeVarInt(buf, off, bytes.length + 1);
return write(buf, off, bytes);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException();
}
}
@Deprecated
public static int writeCustomUTF8(byte[] buf, int off, String s) {
int length = s.length();
off = writeVarInt(buf, off, length);
for (int i = 0; i < length; i++) {
int c = s.charAt(i);
if (c <= 0x007F) {
buf[off++] = (byte) c;
} else {
off = writeUtfChar(buf, off, c);
}
}
return off;
}
@Deprecated
public static int writeCustomUTF8Nullable(byte[] buf, int off, String s) {
if (s == null) {
return writeByte(buf, off, (byte) 0);
}
int length = s.length();
off = writeVarInt(buf, off, length + 1);
for (int i = 0; i < length; i++) {
int c = s.charAt(i);
if (c <= 0x007F) {
buf[off++] = (byte) c;
} else {
off = writeUtfChar(buf, off, c);
}
}
return off;
}
@Deprecated
private static int writeUtfChar(byte[] buf, int off, int c) {
if (c <= 0x07FF) {
buf[off] = (byte) (0xC0 | c >> 6 & 0x1F);
buf[off + 1] = (byte) (0x80 | c & 0x3F);
return off + 2;
} else {
buf[off] = (byte) (0xE0 | c >> 12 & 0x0F);
buf[off + 1] = (byte) (0x80 | c >> 6 & 0x3F);
buf[off + 2] = (byte) (0x80 | c & 0x3F);
return off + 3;
}
}
public static int writeUTF16(byte[] buf, int off, String s) {
int length = s.length();
off = writeVarInt(buf, off, length);
for (int i = 0; i < length; i++) {
char v = s.charAt(i);
off = writeByte(buf, off, (byte) (v >>> 8));
off = writeByte(buf, off, (byte) (v));
}
return off;
}
public static int writeUTF16Nullable(byte[] buf, int off, String s) {
if (s == null) {
return writeByte(buf, off, (byte) 0);
}
int length = s.length();
off = writeVarInt(buf, off, length + 1);
for (int i = 0; i < length; i++) {
char v = s.charAt(i);
off = writeByte(buf, off, (byte) (v >>> 8));
off = writeByte(buf, off, (byte) (v));
}
return off;
}
}