Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Collection;

public class Main {
    /**
     * Compute the common root xpath for all provided xpaths
     * @param xpaths list of xpaths
     * @return common root of provided list
     */
    public static String commonRoot(Collection<String> xpaths) {

        String commonPath = "";
        String[][] folders = new String[xpaths.size()][];

        int c = 0;
        for (String xpath : xpaths) {
            folders[c++] = xpath.split("/"); //split on file separator
        }

        for (int j = 0; j < folders[0].length; j++) {
            String thisFolder = folders[0][j]; //grab the next folder name in the first path
            boolean allMatched = true; //assume all have matched in case there are no more paths
            for (int i = 1; i < folders.length && allMatched; i++) { //look at the other paths
                if (folders[i].length < j) { //if there is no folder here
                    allMatched = false; //no match
                    break; //stop looking because we've gone as far as we can
                }
                //otherwise
                allMatched &= folders[i][j].equals(thisFolder); //check if it matched
            }
            if (allMatched) { //if they all matched this folder name
                commonPath += thisFolder + "/"; //add it to the answer
            } else {//otherwise
                break;//stop looking
            }
        }
        return commonPath;
    }
}