Java String Split splitOn(String toSplit, String splitter)

Description

Splitters

License

Apache License

Declaration

public static List<String> splitOn(String toSplit, String splitter) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.ArrayList;
import java.util.List;

public class Main {
    /**********************************************
     *  Splitters//from   w w w  .j  a  v  a2  s .c o  m
     ***********************************************/

    public static List<String> splitOn(String toSplit, String splitter) {
        List<String> result = new ArrayList<String>();

        //don't use String's .split, it uses regexes!

        String processedToSplit = toSplit;
        while (processedToSplit.contains(splitter)) {
            int firstOccurance = processedToSplit.indexOf(splitter);
            result.add(processedToSplit.substring(0, firstOccurance));
            processedToSplit = processedToSplit.substring(firstOccurance + splitter.length());
        }
        result.add(processedToSplit);

        result = concatElementsWithBrackets(result);

        return result;
    }

    public static List<String> splitOn(List<String> toSplit, String splitter) {
        ArrayList<String> result = new ArrayList<String>();
        for (String s : toSplit) {
            result.addAll(splitOn(s, splitter));
        }
        return result;
    }

    /**
     * This method concats elements if they contain open brackets so it's not split over multiple elements
     * @param result
     * @return
     */
    public static List<String> concatElementsWithBrackets(List<String> input) {
        List<String> result = new ArrayList<String>();
        int openBracketCounter = 0;
        String currentElement = null;
        for (String el : input) {
            openBracketCounter = openBracketCounter + getAmountOfCharInString('(', el)
                    - getAmountOfCharInString(')', el);

            if (currentElement == null) {
                currentElement = el;
            } else {
                currentElement += ", " + el;
            }
            if (openBracketCounter == 0) {
                result.add(currentElement);
                currentElement = null;
            }
        }

        return result;
    }

    /**********************************************
     *  Element counters
     ***********************************************/

    public static int getAmountOfCharInString(char toCount, String string) {
        int result = 0;
        for (int i = 0; i < string.length(); i++) {
            if (string.charAt(i) == toCount) {
                result += 1;
            }
        }
        return result;
    }
}

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