private static boolean canWrite(URL location) {
if (location != null && "file".equals(location.getProtocol())) { // $NON-NLS-1$
File locationDir = new File(location.getFile());
if (!locationDir.exists()) locationDir.mkdirs();
if (locationDir.exists() && AdaptorUtil.canWrite(locationDir)) return true;
}
return false;
}
private static String computeDefaultConfigurationLocation() {
// 1) We store the config state relative to the 'eclipse' directory if possible
// 2) If this directory is read-only
// we store the state in <user.home>/.eclipse/<application-id>_<version> where <user.home>
// is unique for each local user, and <application-id> is the one
// defined in .eclipseproduct marker file. If .eclipseproduct does not
// exist, use "eclipse" as the application-id.
URL installURL = computeInstallConfigurationLocation();
if (installURL != null && "file".equals(installURL.getProtocol())) { // $NON-NLS-1$
File installDir = new File(installURL.getFile());
File defaultConfigDir = new File(installDir, CONFIG_DIR);
if (!defaultConfigDir.exists()) defaultConfigDir.mkdirs();
if (defaultConfigDir.exists() && AdaptorUtil.canWrite(defaultConfigDir))
return defaultConfigDir.getAbsolutePath();
}
// We can't write in the eclipse install dir so try for some place in the user's home dir
return computeDefaultUserAreaLocation(CONFIG_DIR);
}
/** This file is a copy of {@link ZipBundleFile#getFile(String, boolean)} with modifications. */
@Override
public File getFile(String path, boolean nativeCode) {
File originalFile = delegate.getFile(path, nativeCode);
if (originalFile == null) {
return null;
}
if (!hasTransforms(path)) {
return originalFile;
}
try {
File nested = getExtractFile(path);
if (nested != null) {
if (nested.exists()) {
/* the entry is already cached */
if (Debug.DEBUG_GENERAL) {
Debug.println("File already present: " + nested.getPath()); // $NON-NLS-1$
}
if (nested.isDirectory()) {
// must ensure the complete directory is extracted (bug
// 182585)
extractDirectory(path);
}
} else {
if (originalFile.isDirectory()) {
if (!nested.mkdirs()) {
if (Debug.DEBUG_GENERAL) {
Debug.println("Unable to create directory: " + nested.getPath()); // $NON-NLS-1$
}
throw new IOException(
NLS.bind(
AdaptorMsg.ADAPTOR_DIRECTORY_CREATE_EXCEPTION, nested.getAbsolutePath()));
}
extractDirectory(path);
} else {
InputStream in = getEntry(path).getInputStream();
if (in == null) {
return null;
}
// if (in instanceof )
/* the entry has not been cached */
if (Debug.DEBUG_GENERAL) {
Debug.println("Creating file: " + nested.getPath()); // $NON-NLS-1$
}
/* create the necessary directories */
File dir = new File(nested.getParent());
if (!dir.exists() && !dir.mkdirs()) {
if (Debug.DEBUG_GENERAL) {
Debug.println("Unable to create directory: " + dir.getPath()); // $NON-NLS-1$
}
throw new IOException(
NLS.bind(AdaptorMsg.ADAPTOR_DIRECTORY_CREATE_EXCEPTION, dir.getAbsolutePath()));
}
/* copy the entry to the cache */
AdaptorUtil.readFile(in, nested);
if (nativeCode) {
setPermissions(nested);
}
}
}
return nested;
}
} catch (IOException e) {
if (Debug.DEBUG_GENERAL) {
Debug.printStackTrace(e);
}
}
return null;
}