nom.tam.fits.header.hierarch.BlanksDotHierarchKeyFormatter Maven / Gradle / Ivy

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package nom.tam.fits.header.hierarch;

/*
 * #%L
 * nom.tam FITS library
 * %%
 * Copyright (C) 1996 - 2016 nom-tam-fits
 * %%
 * This is free and unencumbered software released into the public domain.
 * 
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 * 
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 * #L%
 */

import nom.tam.fits.header.NonStandard;
import nom.tam.fits.utilities.FitsLineAppender;

public class BlanksDotHierarchKeyFormatter implements IHierarchKeyFormatter {

    private static final String HIERARCH_TEXT = NonStandard.HIERARCH.key();

    private static final int HIERARCH_KEY_OFFSET = HIERARCH_TEXT.length() + 1;

    private final String blanks;

    public BlanksDotHierarchKeyFormatter(int count) {
        StringBuilder builder = new StringBuilder();
        for (int index = 0; index < count; index++) {
            builder.append(' ');
        }
        blanks = builder.toString();
    }

    @Override
    public void append(String key, FitsLineAppender buffer) {
        buffer.append(HIERARCH_TEXT);
        buffer.append(blanks);
        buffer.append(key, HIERARCH_KEY_OFFSET, key.length());
    }
}