Quelle ScanJar.java Sprache: JAVA

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Contributor(s): Thomas Ball
*/

import org.netbeans.modules.classfile.*;
import java.io.*;
import java.util.*;
import java.util.zip.ZipFile;
import java.util.zip.ZipEntry;

/**
* ScanJar:  load all of the classes of a specified jar file,
* useful for performance and regression testing.
*
* @author Thomas Ball
*/
public class ScanJar {
    String jarName;
    boolean includeCode;
    boolean toString;

    public static void main(String[] args) {
boolean includeCode = false;
boolean toString = false;
        if (args.length == 0)
            usage();
        for (int i = 0; i < args.length; i++) {
     if (args[i].equals("-includeCode"))
  includeCode = true;
     else if (args[i].equals("-toString"))
  toString = true;
            else if (args[i].charAt(0) == '-')
                usage();
            else {
                try {
                    ScanJar sj = new ScanJar(args[i], includeCode, toString);
      System.out.print("scanning " + args[i]);
      if (includeCode || toString) {
   System.out.print(": ");
   if (includeCode)
       System.out.print("includeCode ");
   if (toString)
       System.out.print("toString");
      }
      System.out.println();
      ElapsedTimer timer = new ElapsedTimer();
      int n = sj.scan();
      System.out.println("scanned " + n + " files in " +
           timer.toString());
                } catch (IOException e) {
                    System.err.println("error accessing \"" + args[i] +
                                       "\": " + e.toString());
                }
            }
        }
    }

    ScanJar(String name, boolean incl, boolean tos) {
jarName = name;
includeCode = incl;
toString = tos;
    }

    /**
     * Reads  class entries from the jar file into ClassFile instances.
     * Returns the number of classes scanned.
     */
    public int scan() throws IOException {
int n = 0;
ZipFile zf = new ZipFile(jarName);
Enumeration files = zf.entries();
while (files.hasMoreElements()) {
     ZipEntry entry = (ZipEntry)files.nextElement();
     String name = entry.getName();
     if (name.endsWith(".class")) {
                InputStream in = zf.getInputStream(entry);
                ClassFile cf = new ClassFile(in, includeCode);
                if (toString)
                    try {
                        cf.toString(); // forces loading of attributes.
                    } catch (InvalidClassFileAttributeException ex) {
                        System.out.println("error accessing " + name);
                        throw ex;
                    }
                in.close();
  n++;
     }
}
zf.close();
return n;
    }

    public static void usage() {
        System.err.println("usage: java ScanJar [-includeCode] " +
      "[-toString] [ ...]");
        System.exit(1);
    }
}

quality88%

¤ Dauer der Verarbeitung: 0.11 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.