/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, a notice that is now available elsewhere in this distribution
 * accompanied the original version of this file, and, per its terms,
 * should not be removed.
 */

package jdk.internal.org.commonmark.renderer.text;

import java.io.IOException;

public class TextContentWriter {

    private final Appendable buffer;

    private char lastChar;

    public TextContentWriter(Appendable out) {
        buffer = out;
    }

    public void whitespace() {
        if (lastChar != 0 && lastChar != ' ') {
            append(' ');
        }
    }

    public void colon() {
        if (lastChar != 0 && lastChar != ':') {
            append(':');
        }
    }

    public void line() {
        if (lastChar != 0 && lastChar != '\n') {
            append('\n');
        }
    }

    public void writeStripped(String s) {
        append(s.replaceAll("[\\r\\n\\s]+", " "));
    }

    public void write(String s) {
        append(s);
    }

    public void write(char c) {
        append(c);
    }

    private void append(String s) {
        try {
            buffer.append(s);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        int length = s.length();
        if (length != 0) {
            lastChar = s.charAt(length - 1);
        }
    }

    private void append(char c) {
        try {
            buffer.append(c);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        lastChar = c;
    }
}