| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 org.apache.poi.xssf.util; |
| |
| public class NumericRanges { |
| |
| public static final int NO_OVERLAPS = -1; |
| public static final int OVERLAPS_1_MINOR = 0; |
| public static final int OVERLAPS_2_MINOR = 1; |
| public static final int OVERLAPS_1_WRAPS = 2; |
| public static final int OVERLAPS_2_WRAPS = 3; |
| |
| public static long[] getOverlappingRange(long[] range1, long[] range2) { |
| switch(getOverlappingType(range1, range2)) { |
| case OVERLAPS_1_MINOR: |
| return new long[]{range2[0], range1[1]}; |
| case OVERLAPS_2_MINOR: |
| return new long[]{range1[0], range2[1]}; |
| case OVERLAPS_2_WRAPS: |
| return range1; |
| case OVERLAPS_1_WRAPS: |
| return range2; |
| default: |
| case NO_OVERLAPS: |
| return new long[]{-1, -1}; |
| } |
| } |
| |
| public static int getOverlappingType(long[] range1, long[] range2) { |
| long min1 = range1[0]; |
| long max1 = range1[1]; |
| long min2 = range2[0]; |
| long max2 = range2[1]; |
| if (min1 >= min2) { |
| if (max1 <= max2) { |
| return OVERLAPS_2_WRAPS; |
| } else if (min1 <= max2) { |
| return OVERLAPS_2_MINOR; |
| } |
| } else { |
| if (max1 >= max2) { |
| return OVERLAPS_1_WRAPS; |
| } else if (max1 >= min2) { |
| return OVERLAPS_1_MINOR; |
| } |
| } |
| return NO_OVERLAPS; |
| |
| } |
| |
| } |