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333
core/rosteritem.cpp
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333
core/rosteritem.cpp
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/*
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* Squawk messenger.
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* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "rosteritem.h"
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#include <QDebug>
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Core::RosterItem::RosterItem(const QString& pJid, const QString& account, QObject* parent):
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QObject(parent),
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jid(pJid),
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name(),
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archiveState(empty),
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archive(new Archive(jid)),
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subscriptionState(Shared::unknown),
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syncronizing(false),
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requestedCount(0),
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requestedBefore(),
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hisoryCache(),
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appendCache(),
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responseCache(),
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requestCache()
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{
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archive->open(account);
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if (archive->isFromTheBeginning()) {
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archiveState = beginning;
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} else {
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if (archive->size() != 0) {
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archiveState = chunk;
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}
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}
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}
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Core::RosterItem::~RosterItem()
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{
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delete archive;
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}
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Core::RosterItem::ArchiveState Core::RosterItem::getArchiveState() const
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{
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return archiveState;
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}
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Shared::SubscriptionState Core::RosterItem::getSubscriptionState() const
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{
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return subscriptionState;
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}
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QString Core::RosterItem::getName() const
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{
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return name;
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}
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void Core::RosterItem::setSubscriptionState(Shared::SubscriptionState state)
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{
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if (subscriptionState != state) {
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subscriptionState = state;
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emit subscriptionStateChanged(subscriptionState);
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}
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}
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void Core::RosterItem::setName(const QString& n)
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{
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if (name != n) {
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name = n;
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emit nameChanged(name);
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}
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}
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void Core::RosterItem::addMessageToArchive(const Shared::Message& msg)
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{
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if (msg.getId().size() > 0 && msg.getBody().size() > 0) {
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hisoryCache.push_back(msg);
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}
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}
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void Core::RosterItem::requestHistory(int count, const QString& before)
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{
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if (syncronizing) {
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requestCache.emplace_back(count, before);
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} else {
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performRequest(count, before);
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}
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}
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void Core::RosterItem::nextRequest()
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{
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if (syncronizing) {
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if (requestedCount != -1) {
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emit historyResponse(responseCache);
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}
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}
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if (requestCache.size() > 0) {
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std::pair<int, QString> request = requestCache.front();
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requestCache.pop_front();
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performRequest(request.first, request.second);
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} else {
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syncronizing = false;
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requestedCount = 0;
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requestedBefore = "";
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hisoryCache.clear();
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responseCache.clear();
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}
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}
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void Core::RosterItem::performRequest(int count, const QString& before)
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{
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syncronizing = true;
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requestedCount = count;
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requestedBefore = before;
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hisoryCache.clear();
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responseCache.clear();
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switch (archiveState) {
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case empty:
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emit needHistory(before, "");
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break;
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case chunk:
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case beginning: {
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if (count != -1) {
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requestCache.emplace_back(requestedCount, before);
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requestedCount = -1;
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}
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Shared::Message msg = archive->newest();
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emit needHistory("", msg.getId(), msg.getTime());
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}
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break;
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case end:
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if (count != -1) {
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QString lBefore;
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if (responseCache.size() > 0) {
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lBefore = responseCache.front().getId();
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} else {
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lBefore = before;
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}
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bool found = false;
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try {
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std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), lBefore);
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responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
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found = true;
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} catch (Archive::NotFound e) {
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requestCache.emplace_back(requestedCount, before);
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requestedCount = -1;
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emit needHistory(archive->oldestId(), "");
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} catch (Archive::Empty e) {
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requestCache.emplace_back(requestedCount, before);
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requestedCount = -1;
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emit needHistory(archive->oldestId(), "");
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}
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if (found) {
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int rSize = responseCache.size();
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if (rSize < count) {
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if (rSize != 0) {
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emit needHistory(responseCache.front().getId(), "");
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} else {
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emit needHistory(before, "");
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}
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} else {
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nextRequest();
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}
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}
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} else {
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emit needHistory(archive->oldestId(), "");
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}
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break;
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case complete:
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try {
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std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), before);
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responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
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} catch (Archive::NotFound e) {
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qDebug("requesting id hasn't been found in archive, skipping");
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} catch (Archive::Empty e) {
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qDebug("requesting id hasn't been found in archive, skipping");
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}
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nextRequest();
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break;
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}
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}
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void Core::RosterItem::appendMessageToArchive(const Shared::Message& msg)
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{
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const QString& id = msg.getId();
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if (id.size() > 0) {
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if (msg.getBody().size() > 0) {
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switch (archiveState) {
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case empty:
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if (archive->addElement(msg)) {
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archiveState = end;
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}
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if (!syncronizing) {
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requestHistory(-1, id);
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}
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break;
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case beginning:
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appendCache.push_back(msg);
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if (!syncronizing) {
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requestHistory(-1, id);
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}
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break;
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case end:
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archive->addElement(msg);
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break;
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case chunk:
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appendCache.push_back(msg);
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if (!syncronizing) {
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requestHistory(-1, id);
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}
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break;
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case complete:
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archive->addElement(msg);
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break;
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}
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} else if (!syncronizing && archiveState == empty) {
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requestHistory(-1, id);
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}
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}
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}
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void Core::RosterItem::flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId)
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{
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unsigned int added(0);
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if (hisoryCache.size() > 0) {
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added = archive->addElements(hisoryCache);
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qDebug() << "Added" << added << "messages to the archive";
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hisoryCache.clear();
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}
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bool wasEmpty = false;
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switch (archiveState) {
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case beginning:
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if (finished) {
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archiveState = complete;
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archive->addElements(appendCache);
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appendCache.clear();
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nextRequest();
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} else {
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emit needHistory("", lastId);
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}
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break;
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case chunk:
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if (finished) {
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archiveState = end;
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archive->addElements(appendCache);
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appendCache.clear();
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nextRequest();
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} else {
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emit needHistory("", lastId);
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}
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break;
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case empty:
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wasEmpty = true;
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archiveState = end;
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case end:
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if (finished && (added > 0 || !wasEmpty)) {
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archiveState = complete;
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archive->setFromTheBeginning(true);
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}
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if (requestedCount != -1) {
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QString before;
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if (responseCache.size() > 0) {
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before = responseCache.front().getId();
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} else {
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before = requestedBefore;
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}
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bool found = false;
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try {
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std::list<Shared::Message> arc = archive->getBefore(requestedCount - responseCache.size(), before);
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responseCache.insert(responseCache.begin(), arc.begin(), arc.end());
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found = true;
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} catch (Archive::NotFound e) {
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} catch (Archive::Empty e) {
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}
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if (!found || requestedCount > responseCache.size()) {
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if (archiveState == complete) {
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nextRequest();
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} else {
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emit needHistory(firstId, "");
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}
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} else {
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nextRequest();
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}
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} else {
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if (added != 0) {
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nextRequest();
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} else {
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emit needHistory(firstId, "");
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}
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}
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break;
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case complete:
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nextRequest();
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break;
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}
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}
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void Core::RosterItem::requestFromEmpty(int count, const QString& before)
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{
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if (syncronizing) {
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qDebug("perform from empty didn't work, another request queued");
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} else {
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if (archiveState != empty) {
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qDebug("perform from empty didn't work, the state is not empty");
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requestHistory(count, before);
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} else {
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syncronizing = true;
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requestedCount = count;
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requestedBefore = "";
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hisoryCache.clear();
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responseCache.clear();
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emit needHistory(before, "");
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}
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}
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}
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