Java String Split by Separator split(String s, char separator)

Description

split

License

Apache License

Declaration

public static String[] split(String s, char separator) 

Method Source Code

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

public class Main {
    /**//from   w w  w .  j a va  2  s. co  m
     * A string splitting mechanism which doesn't not split if the
     * separator has been escaped.
     */

    private static ThreadLocal<java.util.List<String>> storage = new ThreadLocal<java.util.List<String>>() {
        @Override
        protected java.util.List<String> initialValue() {
            return new java.util.ArrayList<String>(30);
        }
    };

    public static String[] split(String s, char separator) {
        java.util.List<String> list = storage.get();

        // TODO: Check if this retains the capacity of the list.
        // otherwise we might want to manage the inner array ourselves for
        // performance.
        list.clear();

        StringBuilder sb = new StringBuilder();
        boolean escaping = false;
        char escape = '\\';
        char prev;
        char[] cs = s.toCharArray();

        for (int i = 0; i < cs.length; i++) {
            char c = cs[i];

            if (escaping) {
                sb.append(c);
                escaping = false;
            } else if (c == escape) {
                escaping = true;
            } else if (c == separator) {
                list.add(sb.toString());
                sb.setLength(0);
            } else {
                sb.append(c);
            }
        }

        list.add(sb.toString());

        String[] result = new String[list.size()];

        return list.toArray(result);
    }
}

Related

1. split(final String text, final String separator)
2. split(final T string, final char separator)
3. split(String array, String separators)
4. split(String input, int separator)
5. split(String left, String separator)
6. split(String s, char separator)
7. split(String s, char separator)
8. split(String s, char separator)
9. split(String s, char separator)