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/*
* Copyright (C) 2017, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.reftable;
class ReftableConstants {
static final byte[] FILE_HEADER_MAGIC = { 'R', 'E', 'F', 'T' };
static final byte VERSION_1 = (byte) 1;
static final int FILE_HEADER_LEN = 24;
static final int FILE_FOOTER_LEN = 68;
static final byte FILE_BLOCK_TYPE = 'R';
static final byte REF_BLOCK_TYPE = 'r';
static final byte OBJ_BLOCK_TYPE = 'o';
static final byte LOG_BLOCK_TYPE = 'g';
static final byte INDEX_BLOCK_TYPE = 'i';
static final int VALUE_NONE = 0x0;
static final int VALUE_1ID = 0x1;
static final int VALUE_2ID = 0x2;
static final int VALUE_SYMREF = 0x3;
static final int VALUE_TYPE_MASK = 0x7;
static final int LOG_NONE = 0x0;
static final int LOG_DATA = 0x1;
static final int MAX_BLOCK_SIZE = (1 << 24) - 1;
static final int MAX_RESTARTS = 65535;
static boolean isFileHeaderMagic(byte[] buf, int o, int n) {
return (n - o) >= FILE_HEADER_MAGIC.length
&& buf[o + 0] == FILE_HEADER_MAGIC[0]
&& buf[o + 1] == FILE_HEADER_MAGIC[1]
&& buf[o + 2] == FILE_HEADER_MAGIC[2]
&& buf[o + 3] == FILE_HEADER_MAGIC[3];
}
static long reverseUpdateIndex(long time) {
return 0xffffffffffffffffL - time;
}
private ReftableConstants() {
}
}
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