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package net.ypresto.androidtranscoder.utils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ISO6709LocationParser {
private final Pattern pattern;
public ISO6709LocationParser() {
this.pattern = Pattern.compile("([+\\-][0-9.]+)([+\\-][0-9.]+)");
}
/**
* This method parses the given string representing a geographic point location by coordinates in ISO 6709 format
* and returns the latitude and the longitude in float. If <code>location</code> is not in ISO 6709 format,
* this method returns <code>null</code>
*
* @param location a String representing a geographic point location by coordinates in ISO 6709 format
* @return <code>null</code> if the given string is not as expected, an array of floats with size 2,
* where the first element represents latitude and the second represents longitude, otherwise.
*/
public float[] parse(String location) {
if (location == null) return null;
Matcher m = pattern.matcher(location);
if (m.find() && m.groupCount() == 2) {
String latstr = m.group(1);
String lonstr = m.group(2);
try {
float lat = Float.parseFloat(latstr);
float lon = Float.parseFloat(lonstr);
return new float[]{lat, lon};
} catch (NumberFormatException ignored) {
}
}
return null;
}
}
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