jetbrains.exodus.util.ByteIterableUtil Maven / Gradle / Ivy
/**
* Copyright 2010 - 2022 JetBrains s.r.o.
*
* 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
*
* https://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 jetbrains.exodus.util;
import jetbrains.exodus.ByteIterable;
import org.jetbrains.annotations.NotNull;
public class ByteIterableUtil {
private ByteIterableUtil() {
}
public static int compare(@NotNull final ByteIterable key1, @NotNull final ByteIterable key2) {
return compare(key1.getBytesUnsafe(), key1.getLength(), key2.getBytesUnsafe(), key2.getLength());
}
public static int compare(@NotNull final byte[] key1, final int len1, @NotNull final byte[] key2, final int len2) {
final int min = Math.min(len1, len2);
for (int i = 0; i < min; i++) {
final int cmp = (key1[i] & 0xff) - (key2[i] & 0xff);
if (cmp != 0) {
return cmp;
}
}
return len1 - len2;
}
public static int compare(@NotNull final byte[] key1, final int len1, final int offset1, @NotNull final byte[] key2, final int len2) {
final int min = Math.min(len1, len2);
for (int i = 0; i < min; i++) {
final int cmp = (key1[i + offset1] & 0xff) - (key2[i] & 0xff);
if (cmp != 0) {
return cmp;
}
}
return len1 - len2;
}
public static int compare(@NotNull final byte[] key1, final int len1, final int offset1,
@NotNull final byte[] key2, final int len2, final int offset2) {
final int min = Math.min(len1, len2);
for (int i = 0; i < min; i++) {
final int cmp = (key1[i + offset1] & 0xff) - (key2[i + offset2] & 0xff);
if (cmp != 0) {
return cmp;
}
}
return len1 - len2;
}
}