File openExistingFile(@NotNull final String name, final boolean throwFileNotFound) {
final File result = vfs.openFile(env.getAndCheckCurrentTransaction(), name, false);
if (throwFileNotFound && result == null) {
throw new FileNotFoundException(name);
}
return result;
}
@Override
public String[] listAll() throws IOException {
final Transaction txn = env.getAndCheckCurrentTransaction();
final ArrayList<String> allFiles = new ArrayList<>((int) vfs.getNumberOfFiles(txn));
for (final File file : vfs.getFiles(txn)) {
allFiles.add(file.getPath());
}
return allFiles.toArray(new String[allFiles.size()]);
}
@Override
public long fileLength(String name) throws IOException {
return vfs.getFileLength(env.getAndCheckCurrentTransaction(), openExistingFile(name, true));
}
@Override
public void deleteFile(String name) throws IOException {
vfs.deleteFile(env.getAndCheckCurrentTransaction(), name);
}
@Override
public void touchFile(String name) throws IOException {
vfs.touchFile(env.getAndCheckCurrentTransaction(), openExistingFile(name, true));
}