com.brettonw.bag.FormatWriter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bag Show documentation

Bag provides two container classes for text-based storage of constrained types in an array (BagArray) or as a map (BagObject), with a means of serializing objects to and from these container types.

There is a newer version: 5.10.5

Show newest version

package com.brettonw.bag;

import java.util.HashMap;
import java.util.Map;
import java.util.function.Supplier;

abstract public class FormatWriter {
    protected static final String[] QUOTES = { "\"" };

    protected String enclose (String input, String[] bracket) {
        String bracket0 = bracket[0];
        String bracket1 = (bracket.length > 1) ? bracket[1] : bracket0;
        return bracket0 + input + bracket1;
    }

    protected String quote (String input) {
        return enclose (input, QUOTES);
    }

    abstract public String write (BagObject bagObject);
    abstract public String write (BagArray bagArray);

    // static type registration by name
    private static final Map formatWriters = new HashMap<>();

    public static void registerFormatWriter (String format, boolean replace, Supplier supplier) {
        if ((! replace) || (! formatWriters.containsKey(format))) {
            formatWriters.put(format, supplier.get());
        }
    }

    public static String write (BagObject bagObject, String format) {
        if (formatWriters.containsKey(format)) {
            return formatWriters.get(format).write (bagObject);
        }
        return null;
    }

    public static String write (BagArray bagArray, String format) {
        if (formatWriters.containsKey(format)) {
            return formatWriters.get(format).write (bagArray);
        }
        return null;
    }
}