com.github.dandelion.datatables.core.util.JsonIndentingWriter Maven / Gradle / Ivy
/*
* [The "BSD licence"]
* Copyright (c) 2012 Dandelion
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Dandelion nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.github.dandelion.datatables.core.util;
import java.io.StringWriter;
/**
* Custom writer that pretty prints a JSON object as a String.
*
* @author Elad Tabak
* @since 28-Nov-2011
* @version 0.1
*/
public class JsonIndentingWriter extends StringWriter {
private int indent = 0;
@Override
public void write(int c) {
if (((char) c) == '[' || ((char) c) == '{') {
super.write(c);
super.write('\n');
indent++;
writeIndentation();
} else if (((char) c) == ',') {
super.write(c);
super.write('\n');
writeIndentation();
} else if (((char) c) == ']' || ((char) c) == '}') {
super.write('\n');
indent--;
writeIndentation();
super.write(c);
} else {
super.write(c);
}
}
private void writeIndentation() {
for (int i = 0; i < indent; i++) {
super.write(" ");
}
}
}