java.util.jar.Attributes#isEmpty ( )源码实例Demo

public static void writeIndividualSection(OutputStream out, String name, Attributes attributes)
        throws IOException {
    writeAttribute(out, "Name", name);

    if (!attributes.isEmpty()) {
        writeAttributes(out, getAttributesSortedByName(attributes));
    }
    writeSectionDelimiter(out);
}
 

/**
 *  Compares two manifest files. First check is for number of attributes,
 * next one is comparing name-value pairs.
 *
 *@param mf1, mf2 manifests to compare
 *@param ignoredEntries array of manifest entries to ignore
 *@return true if files contains the same entries/values in manifest
 */
public static boolean equalsManifest(File mf1, File mf2, String[] ignoredEntries) {
    if (ignoredEntries == null) {
        ignoredEntries = new String[] {};
    }
    try {
        Manifest m1 = new Manifest(new FileInputStream(mf1));
        Manifest m2 = new Manifest(new FileInputStream(mf2));
        Attributes a1 = m1.getMainAttributes();
        Attributes a2 = m2.getMainAttributes();
        if (a1.size() != a2.size()) {
            return false;
        }
        for (Iterator<Object> i = a1.keySet().iterator(); i.hasNext();) {
            Attributes.Name a = (Attributes.Name) i.next();
            boolean b = true;
            for (int j = 0; j < ignoredEntries.length; j++) {
                if (a.toString().equals(ignoredEntries[j])) {
                    a2.remove(a);
                    b = false;
                    break;
                }
            }
            if (b && (a1.get(a).equals(a2.get(a)))) {
                a2.remove(a);
            }
        }
        return a2.isEmpty();
    } catch (FileNotFoundException fnfe) {
        LOGGER.log(Level.WARNING, "Exception from test - comparing manifests", fnfe); //NOI18N
    } catch (IOException ioe) {
        LOGGER.log(Level.WARNING, "Exception from test - comparing manifests", ioe); //NOI18N
    }
    return false;
}
 

/**
 *  Compares two manifest files. First check is for number of attributes,
 * next one is comparing name-value pairs.
 *
 *@param mf1, mf2 manifests to compare
 *@param ignoredEntries array of manifest entries to ignore
 *@return true if files contains the same entries/values in manifest
 */
public static boolean equalsManifest(File mf1, File mf2, String[] ignoredEntries) {
    if (ignoredEntries == null) {
        ignoredEntries = new String[]{};
    }
    try {
        Manifest m1 = new Manifest(new FileInputStream(mf1));
        Manifest m2 = new Manifest(new FileInputStream(mf2));
        Attributes a1 = m1.getMainAttributes();
        Attributes a2 = m2.getMainAttributes();
        if (a1.size() != a2.size()) {
            return false;
        }
        for (Iterator<Object> i = a1.keySet().iterator(); i.hasNext();) {
            Attributes.Name a = (Attributes.Name) i.next();
            boolean b = true;
            for (int j = 0; j < ignoredEntries.length; j++) {
                if (a.toString().equals(ignoredEntries[j])) {
                    a2.remove(a);
                    b = false;
                    break;
                }
            }
            if (b && (a1.get(a).equals(a2.get(a)))) {
                a2.remove(a);
            }
        }
        return a2.isEmpty();
    } catch (FileNotFoundException fnfe) {
        System.err.println("Exception from test - comparing manifests");
        fnfe.printStackTrace(System.err);
    } catch (IOException ioe) {
        System.err.println("Exception from test - comparing manifests");
        ioe.printStackTrace(System.err);
    }
    return false;
}
 

public static void writeIndividualSection(OutputStream out, String name, Attributes attributes)
        throws IOException {
    writeAttribute(out, "Name", name);

    if (!attributes.isEmpty()) {
        writeAttributes(out, getAttributesSortedByName(attributes));
    }
    writeSectionDelimiter(out);
}
 

private static void fixManifest(Manifest manifest, TinyRemapper remapper) {
	Attributes mainAttrs = manifest.getMainAttributes();

	if (remapper != null) {
		String val = mainAttrs.getValue(Attributes.Name.MAIN_CLASS);
		if (val != null) mainAttrs.put(Attributes.Name.MAIN_CLASS, mapFullyQualifiedClassName(val, remapper));

		val = mainAttrs.getValue("Launcher-Agent-Class");
		if (val != null) mainAttrs.put("Launcher-Agent-Class", mapFullyQualifiedClassName(val, remapper));
	}

	mainAttrs.remove(Attributes.Name.SIGNATURE_VERSION);

	for (Iterator<Attributes> it = manifest.getEntries().values().iterator(); it.hasNext(); ) {
		Attributes attrs = it.next();

		for (Iterator<Object> it2 = attrs.keySet().iterator(); it2.hasNext(); ) {
			Attributes.Name attrName = (Attributes.Name) it2.next();
			String name = attrName.toString();

			if (name.endsWith("-Digest") || name.contains("-Digest-") || name.equals("Magic")) {
				it2.remove();
			}
		}

		if (attrs.isEmpty()) it.remove();
	}
}
 

private void updateManifest(int manifestIndex, String inName, String outName, MessageDigest[] digests)
{
  // Create fresh section for entry, and enter "Name" header

  Manifest nm = newManifest[manifestIndex];
  Manifest om = oldManifest[manifestIndex];

  Attributes oldAtts = om.getAttributes(inName);
  Attributes newAtts = new Attributes();
  //newAtts.putValue(MANIFEST_NAME_TAG, outName);

  // copy over non-name and none digest entries
  if (oldAtts != null){
    for(Iterator it = oldAtts.entrySet().iterator(); it.hasNext();){
      Map.Entry entry = (Map.Entry) it.next();
      Object key = entry.getKey();
      String name = key.toString();
      if (!name.equalsIgnoreCase(MANIFEST_NAME_TAG) &&
          name.indexOf("Digest") == -1){
        newAtts.remove(name);
        newAtts.putValue(name, (String)entry.getValue());
      }
    }
  }

  // Create fresh digest entries in the new section
  if (digests != null && digests.length > 0)
  {
    // Digest-Algorithms header
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < digests.length; i++)
    {
      sb.append(digests[i].getAlgorithm());
      if (i < digests.length -1){
        sb.append(", ");
      }
    }
    newAtts.remove(MANIFEST_DIGESTALG_TAG);
    newAtts.putValue(MANIFEST_DIGESTALG_TAG, sb.toString());

    // *-Digest headers
    for (int i = 0; i < digests.length; i++)
    {
      newAtts.remove(digests[i].getAlgorithm() + "-Digest");
      newAtts.putValue(digests[i].getAlgorithm() + "-Digest", Tools.toBase64(digests[i].digest()));
    }
  }

  if (!newAtts.isEmpty()) {
    // Append the new section to the new manifest
    nm.getEntries().put(outName, newAtts);
  }
}