/* ------------------------------------------------------------ */
private List<String> listEntries() {
checkConnection();
ArrayList<String> list = new ArrayList<String>(32);
JarFile jarFile = _jarFile;
if (jarFile == null) {
try {
JarURLConnection jc = (JarURLConnection) ((new URL(_jarUrl)).openConnection());
jc.setUseCaches(getUseCaches());
jarFile = jc.getJarFile();
} catch (Exception e) {
e.printStackTrace();
LOG.ignore(e);
}
if (jarFile == null) throw new IllegalStateException();
}
Enumeration e = jarFile.entries();
String dir = _urlString.substring(_urlString.indexOf("!/") + 2);
while (e.hasMoreElements()) {
JarEntry entry = (JarEntry) e.nextElement();
String name = entry.getName().replace('\\', '/');
if (!name.startsWith(dir) || name.length() == dir.length()) {
continue;
}
String listName = name.substring(dir.length());
int dash = listName.indexOf('/');
if (dash >= 0) {
// when listing jar:file urls, you get back one
// entry for the dir itself, which we ignore
if (dash == 0 && listName.length() == 1) continue;
// when listing jar:file urls, all files and
// subdirs have a leading /, which we remove
if (dash == 0) listName = listName.substring(dash + 1, listName.length());
else listName = listName.substring(0, dash + 1);
if (list.contains(listName)) continue;
}
list.add(listName);
}
return list;
}
/** Returns true if the represented resource exists. */
@Override
public boolean exists() {
if (_exists) return true;
if (_urlString.endsWith("!/")) {
String file_url = _urlString.substring(4, _urlString.length() - 2);
try {
return newResource(file_url).exists();
} catch (Exception e) {
LOG.ignore(e);
return false;
}
}
boolean check = checkConnection();
// Is this a root URL?
if (_jarUrl != null && _path == null) {
// Then if it exists it is a directory
_directory = check;
return true;
} else {
// Can we find a file for it?
JarFile jarFile = null;
if (check)
// Yes
jarFile = _jarFile;
else {
// No - so lets look if the root entry exists.
try {
JarURLConnection c = (JarURLConnection) ((new URL(_jarUrl)).openConnection());
c.setUseCaches(getUseCaches());
jarFile = c.getJarFile();
} catch (Exception e) {
LOG.ignore(e);
}
}
// Do we need to look more closely?
if (jarFile != null && _entry == null && !_directory) {
// OK - we have a JarFile, lets look at the entries for our path
Enumeration<JarEntry> e = jarFile.entries();
while (e.hasMoreElements()) {
JarEntry entry = e.nextElement();
String name = entry.getName().replace('\\', '/');
// Do we have a match
if (name.equals(_path)) {
_entry = entry;
// Is the match a directory
_directory = _path.endsWith("/");
break;
} else if (_path.endsWith("/")) {
if (name.startsWith(_path)) {
_directory = true;
break;
}
} else if (name.startsWith(_path)
&& name.length() > _path.length()
&& name.charAt(_path.length()) == '/') {
_directory = true;
break;
}
}
if (_directory && !_urlString.endsWith("/")) {
_urlString += "/";
try {
_url = new URL(_urlString);
} catch (MalformedURLException ex) {
LOG.warn(ex);
}
}
}
}
_exists = (_directory || _entry != null);
return _exists;
}
/** Constructor. */
public TagLibraryInfoImpl(
JspCompilationContext ctxt,
ParserController pc,
PageInfo pi,
String prefix,
String uriIn,
String[] location,
ErrorDispatcher err)
throws JasperException {
super(prefix, uriIn);
this.ctxt = ctxt;
this.parserController = pc;
this.pi = pi;
this.err = err;
InputStream in = null;
JarFile jarFile = null;
if (location == null) {
// The URI points to the TLD itself or to a JAR file in which the
// TLD is stored
location = generateTLDLocation(uri, ctxt);
}
try {
if (!location[0].endsWith("jar")) {
// Location points to TLD file
try {
in = getResourceAsStream(location[0]);
if (in == null) {
throw new FileNotFoundException(location[0]);
}
} catch (FileNotFoundException ex) {
err.jspError("jsp.error.file.not.found", location[0]);
}
parseTLD(ctxt, location[0], in, null);
// Add TLD to dependency list
PageInfo pageInfo = ctxt.createCompiler().getPageInfo();
if (pageInfo != null) {
pageInfo.addDependant(location[0]);
}
} else {
// Tag library is packaged in JAR file
try {
URL jarFileUrl = new URL("jar:" + location[0] + "!/");
JarURLConnection conn = (JarURLConnection) jarFileUrl.openConnection();
conn.setUseCaches(false);
conn.connect();
jarFile = conn.getJarFile();
ZipEntry jarEntry = jarFile.getEntry(location[1]);
in = jarFile.getInputStream(jarEntry);
parseTLD(ctxt, location[0], in, jarFileUrl);
} catch (Exception ex) {
err.jspError("jsp.error.tld.unable_to_read", location[0], location[1], ex.toString());
}
}
} finally {
if (in != null) {
try {
in.close();
} catch (Throwable t) {
}
}
if (jarFile != null) {
try {
jarFile.close();
} catch (Throwable t) {
}
}
}
}