public void enumerate() throws IOException {
final IPathHandler handler = m_handler;
for (m_pathIndex = 0;
m_pathIndex < m_path.size();
++m_pathIndex) // important not to cache m_path.size()
{
final File f = (File) m_path.get(m_pathIndex);
if (!f.exists()) {
if (IGNORE_INVALID_ENTRIES) continue;
else throw new IllegalArgumentException("path entry does not exist: [" + f + "]");
}
if (f.isDirectory()) {
if (m_verbose)
m_log.verbose("processing dir path entry [" + f.getAbsolutePath() + "] ...");
m_currentPathDir = f;
enumeratePathDir(null);
} else {
final String name = f.getName();
final String lcName = name.toLowerCase();
if (lcName.endsWith(".zip") || lcName.endsWith(".jar")) {
if (m_verbose)
m_log.verbose("processing archive path entry [" + f.getAbsolutePath() + "] ...");
final File parent = f.getParentFile(); // could be null
final File archive = new File(name);
m_currentPathDir = parent;
// move to enumeratePathArchive(): handler.handleArchiveStart (parent, archive);
enumeratePathArchive(name);
handler.handleArchiveEnd(
parent,
archive); // note: it is important that this is called after the zip stream has
// been closed
} else if (!IGNORE_INVALID_ENTRIES) {
throw new IllegalArgumentException(
"path entry is not a directory or an archive: [" + f + "]");
}
}
}
}
private void enumeratePathDir(final String dir) throws IOException {
final boolean trace1 = m_trace1;
final File currentPathDir = m_currentPathDir;
final File fullDir = dir != null ? new File(currentPathDir, dir) : currentPathDir;
final String[] children = fullDir.list();
final IPathHandler handler = m_handler;
for (int c = 0, cLimit = children.length; c < cLimit; ++c) {
final String childName = children[c];
final File child = dir != null ? new File(dir, childName) : new File(childName);
final File fullChild = new File(fullDir, childName);
if (fullChild.isDirectory()) {
handler.handleDirStart(currentPathDir, child);
if (trace1)
m_log.trace1("enumeratePathDir", "recursing into [" + child.getName() + "] ...");
enumeratePathDir(child.getPath());
handler.handleDirEnd(currentPathDir, child);
} else {
// final String lcName = childName.toLowerCase ();
//
// if (lcName.endsWith (".zip") || lcName.endsWith (".jar"))
// {
// handler.handleArchiveStart (currentPathDir, child);
// enumeratePathArchive (child.getPath ());
// handler.handleArchiveEnd (currentPathDir, child);
// }
// else
{
if (trace1)
m_log.trace1("enumeratePathDir", "processing file [" + child.getName() + "] ...");
handler.handleFile(currentPathDir, child);
}
}
}
}
private void enumeratePathArchive(final String archive) throws IOException {
final boolean trace1 = m_trace1;
final File fullArchive = new File(m_currentPathDir, archive);
JarInputStream in = null;
try {
// note: Sun's JarFile uses native code and has been known to
// crash the JVM in some builds; however, it uses random file
// access and can find "bad" manifests that are not the first
// entries in their archives (which JarInputStream can't do);
// [bugs: 4263225, 4696354, 4338238]
//
// there is really no good solution here but as a compromise
// I try to read the manifest again via a JarFile if the stream
// returns null for it:
in =
new JarInputStream(
new BufferedInputStream(new FileInputStream(fullArchive), 32 * 1024));
final IPathHandler handler = m_handler;
Manifest manifest = in.getManifest(); // can be null
if (manifest == null) manifest = readManifestViaJarFile(fullArchive); // can be null
handler.handleArchiveStart(m_currentPathDir, new File(archive), manifest);
// note: this loop does not skip over the manifest-related
// entries [the handler needs to be smart about that]
for (ZipEntry entry; (entry = in.getNextEntry()) != null; ) {
// TODO: handle nested archives
if (trace1)
m_log.trace1(
"enumeratePathArchive", "processing archive entry [" + entry.getName() + "] ...");
handler.handleArchiveEntry(in, entry);
in.closeEntry();
}
// TODO: this needs major testing
if (m_processManifest) {
// note: JarInputStream only reads the manifest if it the
// first jar entry
if (manifest == null) manifest = in.getManifest();
if (manifest != null) {
final Attributes attributes = manifest.getMainAttributes();
if (attributes != null) {
// note: Sun's documentation says that multiple Class-Path:
// entries are merged sequentially
// (http://java.sun.com/products/jdk/1.2/docs/guide/extensions/spec.html)
// however, their own code does not implement this
final String jarClassPath = attributes.getValue(Attributes.Name.CLASS_PATH);
if (jarClassPath != null) {
final StringTokenizer tokenizer = new StringTokenizer(jarClassPath);
for (int p = 1; tokenizer.hasMoreTokens(); ) {
final String relPath = tokenizer.nextToken();
final File archiveParent = fullArchive.getParentFile();
final File path =
archiveParent != null
? new File(archiveParent, relPath)
: new File(relPath);
final String fullPath =
m_canonical ? Files.canonicalizePathname(path.getPath()) : path.getPath();
if (m_pathSet.add(fullPath)) {
if (m_verbose)
m_log.verbose(" added manifest Class-Path entry [" + path + "]");
m_path.add(
m_pathIndex + (p++), path); // insert after the current m_path entry
}
}
}
}
}
}
} catch (FileNotFoundException fnfe) // ignore: this should not happen
{
if ($assert.ENABLED) throw fnfe;
} finally {
if (in != null)
try {
in.close();
} catch (Exception ignore) {
}
}
}
