protected void execute() throws ArchiverException, IOException {
if (!checkForced()) {
return;
}
ResourceIterator iter = getResources();
if (!iter.hasNext()) {
throw new ArchiverException("You must set at least one file.");
}
File tarFile = getDestFile();
if (tarFile == null) {
throw new ArchiverException("You must set the destination tar file.");
}
if (tarFile.exists() && !tarFile.isFile()) {
throw new ArchiverException(tarFile + " isn't a file.");
}
if (tarFile.exists() && !tarFile.canWrite()) {
throw new ArchiverException(tarFile + " is read-only.");
}
getLogger().info("Building tar: " + tarFile.getAbsolutePath());
tOut =
new TarOutputStream(
compression.compress(new BufferedOutputStream(new FileOutputStream(tarFile))));
tOut.setDebug(true);
if (longFileMode.isTruncateMode()) {
tOut.setLongFileMode(TarOutputStream.LONGFILE_TRUNCATE);
} else if (longFileMode.isFailMode() || longFileMode.isOmitMode()) {
tOut.setLongFileMode(TarOutputStream.LONGFILE_ERROR);
} else {
// warn or GNU
tOut.setLongFileMode(TarOutputStream.LONGFILE_GNU);
}
longWarningGiven = false;
while (iter.hasNext()) {
ArchiveEntry entry = iter.next();
// Check if we don't add tar file in inself
if (ResourceUtils.isSame(entry.getResource(), tarFile)) {
throw new ArchiverException("A tar file cannot include itself.");
}
String fileName = entry.getName();
String name = StringUtils.replace(fileName, File.separatorChar, '/');
tarFile(entry, tOut, name);
}
}
