Java String Split by Quote quoteAwareSplit(String str, char delim)

Description

Break str into individual elements, splitting on delim (not in quotes).

License

Open Source License

Declaration

static List<String> quoteAwareSplit(String str, char delim) 

Method Source Code

//package com.java2s;
/*//from   w w w. j ava  2 s.  c  o m
 *  Copyright (c) 2017, salesforce.com, inc.
 *  All rights reserved.
 *  Licensed under the BSD 3-Clause license.
 *  For full license text, see LICENSE.txt file in the repo root  or https://opensource.org/licenses/BSD-3-Clause
 */

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

public class Main {
    /**
     * Break str into individual elements, splitting on delim (not in quotes).
     */
    static List<String> quoteAwareSplit(String str, char delim) {
        boolean inQuotes = false;
        boolean inEscape = false;

        List<String> elements = new ArrayList<>();
        StringBuilder buffer = new StringBuilder();
        for (char c : str.toCharArray()) {
            if (c == delim && !inQuotes) {
                elements.add(buffer.toString());
                buffer.setLength(0); // clear
                inEscape = false;
                continue;
            }

            if (c == '"') {
                if (inQuotes) {
                    if (!inEscape) {
                        inQuotes = false;
                    }
                } else {
                    inQuotes = true;

                }
                inEscape = false;
                buffer.append(c);
                continue;
            }

            if (c == '\\') {
                if (!inEscape) {
                    inEscape = true;
                    buffer.append(c);
                    continue;
                }
            }

            // all other characters
            inEscape = false;
            buffer.append(c);
        }

        if (inQuotes) {
            throw new RuntimeException("Quoted string not closed");
        }

        elements.add(buffer.toString());

        return elements;
    }
}

Related

1. split(String sString, boolean bIgnoreQuotes)
2. split(String str, char chrSplit, char chrQuote)
3. splitArrayStringQuoted(String array, char quoteChar)
4. splitHandleQuotes(String s)