// Created as a template for Advanced Database Systems 2019

import java.util.ArrayList;

public class CSVSplitter {
	public static String[] split(String input){
		ArrayList<String> output = new ArrayList<String>();
		int start = 0;
		boolean insideQuote = false;

		for (int current = 0; current < input.length();current++){
			char c = input.charAt(current);
			switch (c){
			case ',':
				if (!insideQuote) {
					output.add(input.substring(start,current));
					start = current +1;
				}
				break;
			case '"':
				if (current == start) {
					insideQuote = true;
				} else if ( (current < input.length() - 1) && input.charAt(current+1) == '"'){ // escaped quote
					current = current + 1; // skip ahead
					continue;
				} else if ( (current < input.length() - 1) && input.charAt(current+1) == ',') {
					insideQuote = false;
				}
				break;
			}
		}
		output.add(input.substring(start));
		return output.toArray( new String[output.size()]);
	}

	//This version does not consider quote when deciding splits
	public static String[] splitNoQuote(String input){
		  ArrayList<String> output = new ArrayList<String>();
			int start = 0;
			boolean insideQuote = false;

			for (int current = 0; current < input.length();current++){
				char c = input.charAt(current);
				switch (c){
				case ',':
					if (!insideQuote) {
						output.add(input.substring(start,current));
						start = current +1;
					}
					break;

				}
			}
			output.add(input.substring(start));
			return output.toArray( new String[output.size()]);
	}
}