public static byte decompressHeaderBitCnt(final byte header) {
return (byte)
((ArrayUtils.decompressBooleanSingleByte(header, 7) ? 16 : 0)
+ //
(ArrayUtils.decompressBooleanSingleByte(header, 6) ? 8 : 0)
+ //
(ArrayUtils.decompressBooleanSingleByte(header, 5) ? 4 : 0)
+ //
(ArrayUtils.decompressBooleanSingleByte(header, 4) ? 2 : 0)
+ //
(ArrayUtils.decompressBooleanSingleByte(header, 3) ? 1 : 0));
}
public static byte decompressHeaderBitCnt(final byte[] values) {
return (byte)
((ArrayUtils.decompressBoolean(values, 7) ? 16 : 0)
+ //
(ArrayUtils.decompressBoolean(values, 6) ? 8 : 0)
+ //
(ArrayUtils.decompressBoolean(values, 5) ? 4 : 0)
+ //
(ArrayUtils.decompressBoolean(values, 4) ? 2 : 0)
+ //
(ArrayUtils.decompressBoolean(values, 3) ? 1 : 0));
}
public static byte compress(
final boolean sequences,
final boolean sorted,
final boolean variable,
final boolean unique,
final int diff) {
return ArrayUtils.compressBoolean(compressBits(sequences, sorted, variable, unique, diff))[0];
}
public static int decompressValue(
final byte[] set,
final AtomicInteger position,
final byte numberBitLength,
final boolean signed) {
int result = 0;
int valueType = 1;
final int sign =
signed && ArrayUtils.decompressBoolean(set, position.getAndIncrement()) ? -1 : 1;
for (int x = 0; x < numberBitLength; x++) {
if (position.get() < (set.length * 8) && ArrayUtils.decompressBoolean(set, position.get())) {
result += valueType;
}
if (valueType == 1) {
valueType = 2;
} else {
valueType *= 2;
}
position.incrementAndGet();
}
return sign * result;
}
