Java Tab Expand expandTabs(String s, int tabSize)

Description

expand Tabs

License

Open Source License

Declaration

public static String expandTabs(String s, int tabSize) 

Method Source Code

//package com.java2s;
/*/*from w  w  w . j  av a 2 s .  c o  m*/
 * Copyright (c) 2012-2016 The ANTLR Project. All rights reserved.
 * Use of this file is governed by the BSD 3-clause license that
 * can be found in the LICENSE.txt file in the project root.
 */

public class Main {
    /** @since 4.6 */
    public static String expandTabs(String s, int tabSize) {
        if (s == null)
            return null;
        StringBuilder buf = new StringBuilder();
        int col = 0;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            switch (c) {
            case '\n':
                col = 0;
                buf.append(c);
                break;
            case '\t':
                int n = tabSize - col % tabSize;
                col += n;
                buf.append(spaces(n));
                break;
            default:
                col++;
                buf.append(c);
                break;
            }
        }
        return buf.toString();
    }

    /** @since 4.6 */
    public static String spaces(int n) {
        return sequence(n, " ");
    }

    /** @since 4.6 */
    public static String sequence(int n, String s) {
        StringBuilder buf = new StringBuilder();
        for (int sp = 1; sp <= n; sp++)
            buf.append(s);
        return buf.toString();
    }
}

Related

1. expandTabs(int ntabs)
2. expandTabs(String inputString, int numberOfSpaces)
3. expandTabs(String str)
4. expandTabs(String string, int tabSize)
5. expandTabs(String text, int tabSize)
6. expandTabs(String text, int tabWidth)