private Set<String> listFolders(ImapConnection connection, boolean subscribedOnly)
throws IOException, MessagingException {
String commandResponse = subscribedOnly ? "LSUB" : "LIST";
List<ImapResponse> responses =
connection.executeSimpleCommand(
String.format(
"%s \"\" %s",
commandResponse, ImapUtility.encodeString(getCombinedPrefix() + "*")));
List<ListResponse> listResponses =
(subscribedOnly) ? ListResponse.parseLsub(responses) : ListResponse.parseList(responses);
Set<String> folderNames = new HashSet<>(listResponses.size());
for (ListResponse listResponse : listResponses) {
boolean includeFolder = true;
String decodedFolderName;
try {
decodedFolderName = folderNameCodec.decode(listResponse.getName());
} catch (CharacterCodingException e) {
Log.w(
LOG_TAG,
"Folder name not correctly encoded with the UTF-7 variant "
+ "as defined by RFC 3501: "
+ listResponse.getName(),
e);
// TODO: Use the raw name returned by the server for all commands that require
// a folder name. Use the decoded name only for showing it to the user.
// We currently just skip folders with malformed names.
continue;
}
String folder = decodedFolderName;
if (pathDelimiter == null) {
pathDelimiter = listResponse.getHierarchyDelimiter();
combinedPrefix = null;
}
if (folder.equalsIgnoreCase(mStoreConfig.getInboxFolderName())) {
continue;
} else if (folder.equals(mStoreConfig.getOutboxFolderName())) {
/*
* There is a folder on the server with the same name as our local
* outbox. Until we have a good plan to deal with this situation
* we simply ignore the folder on the server.
*/
continue;
} else {
int prefixLength = getCombinedPrefix().length();
if (prefixLength > 0) {
// Strip prefix from the folder name
if (folder.length() >= prefixLength) {
folder = folder.substring(prefixLength);
}
if (!decodedFolderName.equalsIgnoreCase(getCombinedPrefix() + folder)) {
includeFolder = false;
}
}
}
if (listResponse.hasAttribute("\\NoSelect")) {
includeFolder = false;
}
if (includeFolder) {
folderNames.add(folder);
}
}
folderNames.add(mStoreConfig.getInboxFolderName());
return folderNames;
}
