private static void append(
File file,
FileFilter filter,
int baseNameLen,
String addedTopFolder,
TarArchiveOutputStream tarOut)
throws IOException {
String name = file.getAbsolutePath();
if (name.length() <= baseNameLen) name = "";
else name = name.substring(baseNameLen);
if (File.separatorChar == '\\') name = name.replace('\\', '/');
if (addedTopFolder != null) name = addedTopFolder + '/' + name;
if (FileUtils.isSymlink(file)) {
String linkTarget = FileUtils.readSymbolicLink(file);
if (linkTarget != null) {
TarArchiveEntry entry = new TarArchiveEntry(name, TarConstants.LF_SYMLINK);
entry.setName(name);
entry.setLinkName(linkTarget);
tarOut.putArchiveEntry(entry);
}
return;
}
ArchiveEntry entry = tarOut.createArchiveEntry(file, name);
tarOut.putArchiveEntry(entry);
File[] children = file.listFiles(filter);
if (children != null) {
tarOut.closeArchiveEntry();
// This is a directory. Append its children
for (File child : children) append(child, filter, baseNameLen, addedTopFolder, tarOut);
return;
}
// Append the content of the file
InputStream input = new FileInputStream(file);
try {
StreamUtil.copy(input, tarOut);
tarOut.closeArchiveEntry();
} finally {
StreamUtil.close(input);
}
}
