// $Id:IFDEntry.java 63 2006-07-12 21:50:51Z edavis $
/*
 * Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
 *
 * Portions of this software were developed by the Unidata Program at the
 * University Corporation for Atmospheric Research.
 *
 * Access and use of this software shall impose the following obligations
 * and understandings on the user. The user is granted the right, without
 * any fee or cost, to use, copy, modify, alter, enhance and distribute
 * this software, and any derivative works thereof, and its supporting
 * documentation for any purpose whatsoever, provided that this entire
 * notice appears in all copies of the software, derivative works and
 * supporting documentation.  Further, UCAR requests that the user credit
 * UCAR/Unidata in any publications that result from the use of this
 * software or in any product that includes this software. The names UCAR
 * and/or Unidata, however, may not be used in any advertising or publicity
 * to endorse or promote any products or commercial entity unless specific
 * written permission is obtained from UCAR/Unidata. The user also
 * understands that UCAR/Unidata is not obligated to provide the user with
 * any support, consulting, training or assistance of any kind with regard
 * to the use, operation and performance of this software nor to provide
 * the user with any updates, revisions, new versions or "bug fixes."
 *
 * THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "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 UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
 */
package whitebox.geospatialfiles;

import java.util.*;

/**
 *
 * @author caron
 * @version $Revision:63 $ $Date:2006-07-12 21:50:51Z $
 */
class IFDEntry implements Comparable {

    protected Tag tag;
    protected FieldType type;
    protected int count;
    protected int[] value;
    protected double[] valueD;
    protected String valueS;

    protected ArrayList geokeys = null;

    IFDEntry(Tag tag, FieldType type) {
        this.tag = tag;
        this.type = type;
        this.count = 1;
    }

    IFDEntry(Tag tag, FieldType type, int count) {
        this.tag = tag;
        this.type = type;
        this.count = count;
    }

    public IFDEntry setValue(int v) {
        this.value = new int[1];
        this.value[0] = v;
        return this;
    }

    public IFDEntry setValue(int n, int d) {
        this.value = new int[2];
        this.value[0] = n;
        this.value[1] = d;
        return this;
    }

    public IFDEntry setValue(int n, int d, int f) {
        this.value = new int[3];
        this.value[0] = n;
        this.value[1] = d;
        this.value[2] = f;
        return this;
    }

    public IFDEntry setValue(int[] v) {
        this.count = v.length;
        value = (int[]) v.clone();
        return this;
    }

    public IFDEntry setValue(double v) {
        this.count = 1;
        valueD = new double[1];
        valueD[0] = v;
        return this;
    }

    public IFDEntry setValue(double[] v) {
        this.count = v.length;
        valueD = (double[]) v.clone();
        return this;
    }

    public IFDEntry setValue(String v) {
        this.count = v.length();
        valueS = v;
        return this;
    }

    public void addGeoKey(GeoKey geokey) {
        if (geokeys == null) {
            geokeys = new ArrayList();
        }
        geokeys.add(geokey);
    }

    @Override
    public int compareTo(Object o) {
        return tag.compareTo(((IFDEntry) o).tag);
    }

    @Override
    public String toString() {
        StringBuilder sbuf = new StringBuilder();
        sbuf.append(" tag = " + tag);
        sbuf.append(" type = " + type);
        sbuf.append(" count = " + count);
        sbuf.append(" values = ");

        if (type == FieldType.ASCII) {
            sbuf.append(valueS);

        } else if (type == FieldType.RATIONAL) {
            for (int i = 0; i < 2; i += 2) {
                if (i > 1) {
                    sbuf.append(", ");
                }
                sbuf.append(value[i] + "/" + value[i + 1]);
            }

        } else if ((type == FieldType.DOUBLE) || (type == FieldType.FLOAT)) {
            for (int i = 0; i < count; i++) {
                sbuf.append(valueD[i] + " ");
            }

        } else {
            int n = Math.min(count, 30);
            for (int i = 0; i < n; i++) {
                sbuf.append(value[i] + " ");
            }
        }

        if (geokeys != null) {
            sbuf.append("\n");
            for (int i = 0; i < geokeys.size(); i++) {
                GeoKey elem = (GeoKey) geokeys.get(i);
                sbuf.append("        " + elem + "\n");
            }
        }

        return sbuf.toString();
    }

}