Java String Split by Quote splitQuoted(String input, Character split)

Description

Splits a string and returns the parts as array.

License

Open Source License

Parameter

Parameter	Description
input	string to split
split	split char

Return

array of parts

Declaration

public static String[] splitQuoted(String input, Character split) 

Method Source Code

//package com.java2s;
/*//w  w  w .  j  a v a 2s. c o  m
 * Copyright (c) 2016 Alexander Gr?n
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

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

public class Main {
    /**
     * Splits a string and returns the parts as array.
     *
     * @param input string to split
     * @param split split char
     * @return array of parts
     * @see #splitQuoted(String, Character, List)
     */
    public static String[] splitQuoted(String input, Character split) {
        List<String> parts = new ArrayList<>();
        splitQuoted(input, split, parts);
        String[] result = new String[parts.size()];
        return parts.toArray(result);
    }

    /**
     * Split an input string at a specified split-character  into several parts.
     * <tt>"</tt> and <tt>'</tt> are considered during the process.
     * <p><code>"testA    testB   testB" -&gt; [testA,testB,testC]</code></p>
     * <p><code>"'testA    testB'   testB" -&gt; [testA    testB,testC]</code></p>
     *
     * @param input input string
     * @param split char used to split
     * @param parts list filled with the resulting parts
     */
    @SuppressWarnings("ConstantConditions")
    public static void splitQuoted(String input, Character split, List<String> parts) {
        boolean inQuotation = false;
        boolean inDoubleQuotation = false;
        boolean escapeNext = false;
        int currentStart = 0;
        char[] chars = input.trim().toCharArray();
        char c;
        String p;
        for (int i = 0; i < chars.length; i++) {
            c = chars[i];
            boolean escape = escapeNext;
            escapeNext = false;
            if (!escape && c == '\\') {
                escapeNext = true;
            } else if (c == '\'') {
                if (inQuotation && !escape) {
                    inQuotation = false;
                    continue;
                }
                if (!inDoubleQuotation) {
                    inQuotation = true;
                }
            } else if (c == '\"') {
                if (inDoubleQuotation && !escape) {
                    inDoubleQuotation = false;
                    continue;
                }
                if (!inDoubleQuotation) {
                    inDoubleQuotation = true;
                }
            } else if (c == split && !inDoubleQuotation && !inQuotation) {
                int length = i - currentStart;
                if (length == 0) {
                    p = "";
                } else {
                    p = input.substring(currentStart, currentStart + length);
                }
                parts.add(p);
                currentStart = i + 1;
            }
        }
        if (currentStart < chars.length) {
            p = input.substring(currentStart);
            parts.add(p);
        }

    }
}

Related

1. splitIgnoringQuotes(String str, char separatorChar)
2. splitIgoringQuotes(String str)
3. splitOnCharWithQuoting(String s, char splitChar, char quoteChar, char escapeChar)
4. splitOnCharWithQuoting(String s, char splitChar, char quoteChar, char escapeChar)
5. splitOptions(String quotedOptionString)
6. splitQuoted(String str, char delimiter)
7. splitQuotedEscape(String src)
8. splitQuotedStr(String str, char delimiter, char quote, boolean trim)
9. splitQuotedString(String str)