dmolony-DiskBrowser/src/com/bytezone/diskbrowser/visicalc/RangeFunction.java

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2016-07-31 23:52:47 +00:00
package com.bytezone.diskbrowser.visicalc;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public abstract class RangeFunction extends Function
{
private static final Pattern rangePattern = Pattern
.compile ("\\(([A-B]?[A-Z])([0-9]{1,3})\\.\\.\\.([A-B]?[A-Z])([0-9]{1,3})\\)?");
private static final Pattern addressList = Pattern.compile ("\\(([^,]+(,[^,]+)*)\\)");
protected final Range range;
public RangeFunction (Sheet parent, String text)
{
super (parent, text);
range = getRange (text);
}
protected Range getRange (String text)
{
Range range = null;
Matcher m = rangePattern.matcher (text);
if (m.find ())
{
Address fromAddress = new Address (m.group (1), m.group (2));
Address toAddress = new Address (m.group (3), m.group (4));
range = new Range (fromAddress, toAddress);
}
if (range != null)
return range;
m = addressList.matcher (text);
if (m.find ())
{
String[] cells = m.group (1).split (",");
range = new Range (cells);
}
if (range != null)
return range;
int pos = text.indexOf ("...");
if (pos > 0)
{
String from = text.substring (0, pos);
String to = text.substring (pos + 3);
Address fromAddress = new Address (from);
Address toAddress = new Address (to);
range = new Range (fromAddress, toAddress);
}
if (range == null)
System.out.printf ("null range [%s]%n", text);
return range;
}
}