/*
* FindBugs - Find bugs in Java programs
* Copyright (C) 2003-2005 William Pugh
* 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
*/
package edu.umd.cs.findbugs.workflow;
import edu.umd.cs.findbugs.BugCollection;
import edu.umd.cs.findbugs.PackageStats;
import edu.umd.cs.findbugs.Project;
import edu.umd.cs.findbugs.ProjectStats;
import edu.umd.cs.findbugs.SortedBugCollection;
import edu.umd.cs.findbugs.PackageStats.ClassStats;
/**
* Java main application to compute defect density for a bug collection
* (stored as an XML collection)
*
* @author William Pugh
*/
public class DefectDensity {
private static void printRow(Object... values) {
for (Object s : values) {
System.out.print(s);
System.out.print("\t");
}
System.out.println();
}
public static double density(int bugs, int ncss) {
if (ncss == 0) return Double.NaN;
long bugsPer10KNCSS = Math.round(10000.0*bugs/ncss);
return bugsPer10KNCSS/10.0;
}
public static void main(String args[]) throws Exception {
if (args.length>1 || (args.length>0 && "-help".equals(args[0]))) {
System.err.println("Usage: " + DefectDensity.class.getName() + " [<infile>]");
System.exit(1);
}
BugCollection origCollection = new SortedBugCollection();
int argCount = 0;
if (argCount == args.length)
origCollection.readXML(System.in);
else
origCollection.readXML(args[argCount]);
ProjectStats stats = origCollection.getProjectStats();
printRow("kind", "name", "density/KNCSS", "bugs", "NCSS");
double projectDensity = density(stats.getTotalBugs(), stats.getCodeSize());
printRow("project", origCollection.getCurrentAppVersion().getReleaseName(),
projectDensity, stats.getTotalBugs(),
stats.getCodeSize());
for (PackageStats p : stats.getPackageStats()) if (p.getTotalBugs() > 4) {
double packageDensity = density( p.getTotalBugs(),p.size());
if (Double.isNaN(packageDensity) || packageDensity < projectDensity) continue;
printRow("package", p.getPackageName(),
packageDensity, p.getTotalBugs(), p.size());
for (ClassStats c : p.getSortedClassStats()) if (c.getTotalBugs() > 4) {
double density = density( c.getTotalBugs(), c.size());
if (Double.isNaN(density) || density < packageDensity) continue;
printRow("class", c.getName(),
density, c.getTotalBugs(), c.size());
}
}
}
}
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