termux-app

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/*
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 * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package com.termux.shared.file.filesystem;
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/**
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 * Container for device/inode to uniquely identify file.
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 * https://cs.android.com/android/platform/superproject/+/android-11.0.0_r3:libcore/ojluni/src/main/java/sun/nio/fs/UnixFileKey.java
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 */
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public class FileKey {
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    private final long st_dev;
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    private final long st_ino;
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    FileKey(long st_dev, long st_ino) {
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        this.st_dev = st_dev;
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        this.st_ino = st_ino;
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    }
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    @Override
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    public int hashCode() {
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        return (int)(st_dev ^ (st_dev >>> 32)) +
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            (int)(st_ino ^ (st_ino >>> 32));
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    }
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    @Override
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    public boolean equals(Object obj) {
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        if (obj == this)
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            return true;
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        if (!(obj instanceof FileKey))
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            return false;
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        FileKey other = (FileKey)obj;
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        return (this.st_dev == other.st_dev) && (this.st_ino == other.st_ino);
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    }
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    @Override
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    public String toString() {
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        StringBuilder sb = new StringBuilder();
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        sb.append("(dev=")
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            .append(Long.toHexString(st_dev))
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            .append(",ino=")
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            .append(st_ino)
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            .append(')');
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        return sb.toString();
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    }
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}
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