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// Copyright (C) 2010 The Android Open Source Project
//
// 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.google.gerrit.common.data;
import java.util.ArrayList;
import java.util.List;
/**
* Represents a closed interval [min, max] with a name. The special value [0, 0] is understood to be
* the empty range.
*/
public class PermissionRange implements Comparable<PermissionRange> {
public static class WithDefaults extends PermissionRange {
protected int defaultMin;
protected int defaultMax;
protected WithDefaults() {}
public WithDefaults(String name, int min, int max, int defMin, int defMax) {
super(name, min, max);
setDefaultRange(defMin, defMax);
}
public int getDefaultMin() {
return defaultMin;
}
public int getDefaultMax() {
return defaultMax;
}
public void setDefaultRange(int min, int max) {
defaultMin = min;
defaultMax = max;
}
/** @return all values between {@link #getMin()} and {@link #getMax()} */
public List<Integer> getValuesAsList() {
ArrayList<Integer> r = new ArrayList<>(getRangeSize());
for (int i = min; i <= max; i++) {
r.add(i);
}
return r;
}
/** @return number of values between {@link #getMin()} and {@link #getMax()} */
public int getRangeSize() {
return max - min;
}
}
protected String name;
protected int min;
protected int max;
protected PermissionRange() {}
public PermissionRange(String name, int min, int max) {
this.name = name;
if (min <= max) {
this.min = min;
this.max = max;
} else {
this.min = 0;
this.max = 0;
}
}
public String getName() {
return name;
}
public boolean isLabel() {
return Permission.isLabel(getName());
}
public String getLabel() {
return Permission.extractLabel(getName());
}
public int getMin() {
return min;
}
public int getMax() {
return max;
}
/** True if the value is within the range. */
public boolean contains(int value) {
return getMin() <= value && value <= getMax();
}
/** Normalize the value to fit within the bounds of the range. */
public int squash(int value) {
return Math.min(Math.max(getMin(), value), getMax());
}
/** True both {@link #getMin()} and {@link #getMax()} are 0. */
public boolean isEmpty() {
return getMin() == 0 && getMax() == 0;
}
@Override
public int compareTo(PermissionRange o) {
return getName().compareTo(o.getName());
}
@Override
public String toString() {
StringBuilder r = new StringBuilder();
if (getMin() < 0 && getMax() == 0) {
r.append(getMin());
r.append(' ');
} else {
if (getMin() != getMax()) {
if (0 <= getMin()) {
r.append('+');
}
r.append(getMin());
r.append("..");
}
if (0 <= getMax()) {
r.append('+');
}
r.append(getMax());
r.append(' ');
}
return r.toString();
}
}