com.alibaba.rocketmq.common.constant.PermName Maven / Gradle / Ivy
/**
* Copyright (C) 2010-2013 Alibaba Group Holding Limited
*
* 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 com.alibaba.rocketmq.common.constant;
/**
* @author shijia.wxr
*/
public class PermName {
public static final int PERM_PRIORITY = 0x1 << 3;
public static final int PERM_READ = 0x1 << 2;
public static final int PERM_WRITE = 0x1 << 1;
public static final int PERM_INHERIT = 0x1 << 0;
public static String perm2String(final int perm) {
final StringBuffer sb = new StringBuffer("---");
if (isReadable(perm)) {
sb.replace(0, 1, "R");
}
if (isWriteable(perm)) {
sb.replace(1, 2, "W");
}
if (isInherited(perm)) {
sb.replace(2, 3, "X");
}
return sb.toString();
}
public static boolean isReadable(final int perm) {
return (perm & PERM_READ) == PERM_READ;
}
public static boolean isWriteable(final int perm) {
return (perm & PERM_WRITE) == PERM_WRITE;
}
public static boolean isInherited(final int perm) {
return (perm & PERM_INHERIT) == PERM_INHERIT;
}
}