public String export(OutputStream os, XWikiContext context) throws IOException, XWikiException {
if (this.files.size() == 0) {
return "No Selected file";
}
ZipArchiveOutputStream zos = new ZipArchiveOutputStream(os);
zos.setEncoding(XAR_FILENAME_ENCODING);
// By including the unicode extra fields, it is possible to extract XAR-files
// containing documents with non-ascii characters in the document name using InfoZIP,
// and the filenames will be correctly converted to the character set of the local
// file system.
zos.setCreateUnicodeExtraFields(ZipArchiveOutputStream.UnicodeExtraFieldPolicy.ALWAYS);
for (int i = 0; i < this.files.size(); i++) {
DocumentInfo docinfo = this.files.get(i);
XWikiDocument doc = docinfo.getDoc();
addToZip(doc, zos, this.withVersions, context);
}
addInfosToZip(zos, context);
zos.finish();
zos.flush();
return "";
}
