/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.revolsys.geometry.test.util;
import java.io.IOException;
import com.revolsys.geometry.model.Geometry;
import com.revolsys.geometry.model.GeometryFactory;
import com.revolsys.geometry.wkb.ParseException;
/**
* Reads a {@link Geometry} from a string which is in either WKT, WKBHex
* or GML format
*
* @author Martin Davis
* @version 1.7
*/
public class MultiFormatReader {
public static final int FORMAT_GML = 3;
public static final int FORMAT_UNKNOWN = 0;
public static final int FORMAT_WKB = 2;
public static final int FORMAT_WKT = 1;
private static final int MAX_CHARS_TO_CHECK = 6;
public static int format(final String s) {
if (isWKB(s)) {
return FORMAT_WKB;
}
if (isGML(s)) {
return FORMAT_GML;
}
if (isWKT(s)) {
return FORMAT_WKT;
}
return FORMAT_UNKNOWN;
}
public static boolean isGML(final String str) {
return str.indexOf("<") >= 0;
}
private static boolean isHex(final String str, final int maxCharsToTest) {
for (int i = 0; i < maxCharsToTest && i < str.length(); i++) {
final char ch = str.charAt(i);
if (!isHexDigit(ch)) {
return false;
}
}
return true;
}
private static boolean isHexDigit(final char ch) {
if (Character.isDigit(ch)) {
return true;
}
final char chLow = Character.toLowerCase(ch);
if (chLow >= 'a' && chLow <= 'f') {
return true;
}
return false;
}
public static boolean isWKB(final String str) {
return isHex(str, MAX_CHARS_TO_CHECK);
}
public static boolean isWKT(final String s) {
return !isWKB(s) && !isGML(s);
}
private final GeometryFactory geomFactory;
public MultiFormatReader() {
this(GeometryFactory.DEFAULT_3D);
}
public MultiFormatReader(final GeometryFactory geomFactory) {
this.geomFactory = geomFactory;
}
public Geometry read(final String geomStr) throws ParseException, IOException {
final String trimStr = geomStr.trim();
if (isWKB(trimStr)) {
return IOUtil.readGeometriesFromWKBHexString(trimStr, this.geomFactory);
}
if (isGML(trimStr)) {
return readGML(trimStr);
}
return IOUtil.readGeometriesFromWKTString(trimStr, this.geomFactory);
}
private Geometry readGML(final String str) throws ParseException {
return null;
// try {
// return (new GMLReader()).read(str, geomFactory);
// }
// catch (Exception ex) {
// throw new ParseException(ex.getMessage());
// // ex.printStackTrace();
// }
}
}