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/*******************************************************************************
* Copyright (c) 2004, 2010 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.skynet.core.importing.parsers;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.osee.framework.jdk.core.util.Conditions;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.framework.skynet.core.importing.ReqNumbering;
/**
* Decides whether a outline number is valid or invalid.
*
* @see OutlineResolutionAndNumberTest
* @author Karol M. Wilk
*/
public final class OutlineResolution {
/**
* Converts <code>currentOutlineNumber</code> and <code>lastOutlineNumber</code> to ReqNumbering (without trimming
* ending 0s) and runs
* <code>isInvalidOutlineNumber(ReqNumbering currentOutlineNumber, ReqNumbering lastOutlineNumber)</code>
*
* @param currentOutlineNumber
* @param lastOutlineNumber
* @return
*/
public boolean isInvalidOutlineNumber(String currentOutlineNumber, String lastOutlineNumber) {
boolean resolution = Strings.isValid(currentOutlineNumber, lastOutlineNumber);
if (resolution) {
ReqNumbering current = new ReqNumbering(currentOutlineNumber, false);
ReqNumbering last = new ReqNumbering(lastOutlineNumber, false);
resolution = isInvalidOutlineNumber(current, last);
}
return resolution;
}
/**
* Compares <code>currentOutlineNumber</code> and <code>lastOutlineNumber</code> to determine if current is not next
* in outline numbering sequence. Assumes that <code>last</code> is the last valid outline number. <b>NOTE</b>
* Accepts larger paragraph numbers
*
* @param currentOutlineNumber
* @param lastOutlineNumber
* @return
*/
public boolean isInvalidOutlineNumber(ReqNumbering current, ReqNumbering last) {
boolean invalid = Conditions.notNull(current, last);
if (invalid) {
switch (last.compareTo(current)) {
case -1: //just test upper bound of last, assuming last is last correct paragraph no
Set<String> nextUp = generateNextSet(last);
invalid = !nextUp.contains(current.getNumberString());
//and if the current is generally larger but has not been generated, due to sequence of from:
// $current.n.k, st "n -> oo, k -> oo", "n, k in Z", "oo is infinity"
if (invalid) {
invalid = current.getNumberString().length() - last.getNumberString().length() < 4;
//TODO: another check could be delta should be at most 1?
}
break;
case 1:
case 0:
default:
invalid = true;
break;
}
}
return invalid;
}
/**
* @param lastNumberParagrah i.e. new ReqNumbering("4.0");
* @return set of combinations i.e ["4.1, 5.0, 5., 4.0.1"]
*/
public Set<String> generateNextSet(ReqNumbering lastNumberParagrah) {
Set<String> nextParagraphs = new HashSet<String>();
String last = lastNumberParagrah.getNumberString();
if (last.endsWith(".0")) {
last = last.substring(0, last.length() - ".0".length());
}
last = Strings.truncateEndChar(last, '.');
if (!last.endsWith(".0.1")) { //special s p
nextParagraphs.add(last + ".0.1");
nextParagraphs.add(last + ".1");
}
String[] digits = last.split("\\.");
for (int i = 0; i < digits.length; i++) {
int incDigit = extractDigitsSafely(digits[i]) + 1;
if (i == 0) {
nextParagraphs.add(incDigit + ".0");
nextParagraphs.add(Integer.toString(incDigit));
} else {
StringBuilder nextNew = new StringBuilder(digits.length * 2);
for (int j = 0; j < i; j++) {
nextNew.append(digits[j] + ".");
}
nextParagraphs.add(nextNew.toString() + Integer.toString(incDigit));
}
}
Set<String> dotEnding = new HashSet<String>(nextParagraphs.size());
for (String next : nextParagraphs) {
dotEnding.add(next + ".");
}
nextParagraphs.addAll(dotEnding);
return nextParagraphs;
}
private int extractDigitsSafely(String stringContainingDigit) {
int returnValue = 0;
try {
returnValue = Integer.parseInt(stringContainingDigit);
} catch (NumberFormatException ex) {
//Do nothing
}
return returnValue;
}
}
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