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Implement Import/Export RSS rules in JSON format

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Vladimir Golovnev (Glassez) 2017-11-23 10:25:43 +03:00
parent b8fc415870
commit 916cfcdb03
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GPG key ID: 52A2C7DEE2DFA6F7
4 changed files with 150 additions and 47 deletions
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121
src/base/rss/rss_autodownloader.cpp
View file

@ -38,6 +38,7 @@
#include <QThread>
#include <QTimer>
#include <QVariant>
#include <QVector>
#include "../bittorrent/magneturi.h"
#include "../bittorrent/session.h"
@ -64,6 +65,32 @@ const QString RulesFileName(QStringLiteral("download_rules.json"));
const QString SettingsKey_ProcessingEnabled(QStringLiteral("RSS/AutoDownloader/EnableProcessing"));
namespace
{
QVector<RSS::AutoDownloadRule> rulesFromJSON(const QByteArray &jsonData)
{
QJsonParseError jsonError;
QJsonDocument jsonDoc = QJsonDocument::fromJson(jsonData, &jsonError);
if (jsonError.error != QJsonParseError::NoError)
throw RSS::ParsingError(jsonError.errorString());
if (!jsonDoc.isObject())
throw RSS::ParsingError(RSS::AutoDownloader::tr("Invalid data format."));
const QJsonObject jsonObj {jsonDoc.object()};
QVector<RSS::AutoDownloadRule> rules;
for (auto it = jsonObj.begin(); it != jsonObj.end(); ++it) {
const QJsonValue jsonVal {it.value()};
if (!jsonVal.isObject())
throw RSS::ParsingError(RSS::AutoDownloader::tr("Invalid data format."));
rules.append(RSS::AutoDownloadRule::fromJsonObject(jsonVal.toObject(), it.key()));
}
return rules;
}
}
using namespace RSS;
QPointer<AutoDownloader> AutoDownloader::m_instance = nullptr;
@ -85,8 +112,8 @@ AutoDownloader::AutoDownloader()
connect(m_ioThread, &QThread::finished, m_fileStorage, &AsyncFileStorage::deleteLater);
connect(m_fileStorage, &AsyncFileStorage::failed, [](const QString &fileName, const QString &errorString)
{
Logger::instance()->addMessage(QString("Couldn't save RSS AutoDownloader data in %1. Error: %2")
.arg(fileName).arg(errorString), Log::WARNING);
LogMsg(tr("Couldn't save RSS AutoDownloader data in %1. Error: %2")
.arg(fileName).arg(errorString), Log::CRITICAL);
});
m_ioThread->start();
@ -175,6 +202,43 @@ void AutoDownloader::removeRule(const QString &ruleName)
}
}
QByteArray AutoDownloader::exportRules(AutoDownloader::RulesFileFormat format) const
{
switch (format) {
case RulesFileFormat::Legacy:
return exportRulesToLegacyFormat();
default:
return exportRulesToJSONFormat();
}
}
void AutoDownloader::importRules(const QByteArray &data, AutoDownloader::RulesFileFormat format)
{
switch (format) {
case RulesFileFormat::Legacy:
importRulesFromLegacyFormat(data);
break;
default:
importRulesFromJSONFormat(data);
}
}
QByteArray AutoDownloader::exportRulesToJSONFormat() const
{
QJsonObject jsonObj;
for (const auto &rule : rules())
jsonObj.insert(rule.name(), rule.toJsonObject());
return QJsonDocument(jsonObj).toJson();
}
void AutoDownloader::importRulesFromJSONFormat(const QByteArray &data)
{
const auto rules = rulesFromJSON(data);
for (const auto &rule : rules)
insertRule(rule);
}
QByteArray AutoDownloader::exportRulesToLegacyFormat() const
{
QVariantHash dict;
@ -189,19 +253,17 @@ QByteArray AutoDownloader::exportRulesToLegacyFormat() const
return data;
}
bool AutoDownloader::importRulesFromLegacyFormat(const QByteArray &data)
void AutoDownloader::importRulesFromLegacyFormat(const QByteArray &data)
{
QDataStream in(data);
in.setVersion(QDataStream::Qt_4_5);
QVariantHash dict;
in >> dict;
if (in.status() != QDataStream::Ok)
return false;
throw ParsingError(tr("Invalid data format"));
for (const QVariant &val : dict)
insertRule(AutoDownloadRule::fromLegacyDict(val.toHash()));
return true;
}
void AutoDownloader::process()
@ -306,39 +368,20 @@ void AutoDownloader::load()
else if (rulesFile.open(QFile::ReadOnly))
loadRules(rulesFile.readAll());
else
Logger::instance()->addMessage(
QString("Couldn't read RSS AutoDownloader rules from %1. Error: %2")
.arg(rulesFile.fileName()).arg(rulesFile.errorString()), Log::WARNING);
LogMsg(tr("Couldn't read RSS AutoDownloader rules from %1. Error: %2")
.arg(rulesFile.fileName()).arg(rulesFile.errorString()), Log::CRITICAL);
}
void AutoDownloader::loadRules(const QByteArray &data)
{
QJsonParseError jsonError;
QJsonDocument jsonDoc = QJsonDocument::fromJson(data, &jsonError);
if (jsonError.error != QJsonParseError::NoError) {
Logger::instance()->addMessage(
QString("Couldn't parse RSS AutoDownloader rules. Error: %1")
.arg(jsonError.errorString()), Log::WARNING);
return;
try {
const auto rules = rulesFromJSON(data);
for (const auto &rule : rules)
setRule_impl(rule);
}
if (!jsonDoc.isObject()) {
Logger::instance()->addMessage(
QString("Couldn't load RSS AutoDownloader rules. Invalid data format."), Log::WARNING);
return;
}
QJsonObject jsonObj = jsonDoc.object();
foreach (const QString &key, jsonObj.keys()) {
const QJsonValue jsonVal = jsonObj.value(key);
if (!jsonVal.isObject()) {
Logger::instance()->addMessage(
QString("Couldn't load RSS AutoDownloader rule '%1'. Invalid data format.")
.arg(key), Log::WARNING);
continue;
}
setRule_impl(AutoDownloadRule::fromJsonObject(jsonVal.toObject(), key));
catch (const ParsingError &error) {
LogMsg(tr("Couldn't load RSS AutoDownloader rules. Reason: %1")
.arg(error.message()), Log::CRITICAL);
}
}
@ -415,3 +458,13 @@ void AutoDownloader::timerEvent(QTimerEvent *event)
Q_UNUSED(event);
store();
}
ParsingError::ParsingError(const QString &message)
: std::runtime_error(message.toUtf8().data())
{
}
QString ParsingError::message() const
{
return what();
}

23
src/base/rss/rss_autodownloader.h
View file

@ -28,6 +28,8 @@
#pragma once
#include <stdexcept>
#include <QBasicTimer>
#include <QHash>
#include <QList>
@ -49,6 +51,13 @@ namespace RSS
class AutoDownloadRule;
class ParsingError : public std::runtime_error
{
public:
explicit ParsingError(const QString &message);
QString message() const;
};
class AutoDownloader final: public QObject
{
Q_OBJECT
@ -60,6 +69,12 @@ namespace RSS
~AutoDownloader() override;
public:
enum class RulesFileFormat
{
Legacy,
JSON
};
static AutoDownloader *instance();
bool isProcessingEnabled() const;
@ -73,8 +88,8 @@ namespace RSS
bool renameRule(const QString &ruleName, const QString &newRuleName);
void removeRule(const QString &ruleName);
QByteArray exportRulesToLegacyFormat() const;
bool importRulesFromLegacyFormat(const QByteArray &data);
QByteArray exportRules(RulesFileFormat format = RulesFileFormat::JSON) const;
void importRules(const QByteArray &data, RulesFileFormat format = RulesFileFormat::JSON);
signals:
void processingStateChanged(bool enabled);
@ -101,6 +116,10 @@ namespace RSS
void loadRulesLegacy();
void store();
void storeDeferred();
QByteArray exportRulesToJSONFormat() const;
void importRulesFromJSONFormat(const QByteArray &data);
QByteArray exportRulesToLegacyFormat() const;
void importRulesFromLegacyFormat(const QByteArray &data);
static QPointer<AutoDownloader> m_instance;

50
src/gui/rss/automatedrssdownloader.cpp
View file

@ -54,8 +54,13 @@
#include "autoexpandabledialog.h"
#include "ui_automatedrssdownloader.h"
const QString EXT_JSON {QStringLiteral(".json")};
const QString EXT_LEGACY {QStringLiteral(".rssrules")};
AutomatedRssDownloader::AutomatedRssDownloader(QWidget *parent)
: QDialog(parent)
, m_formatFilterJSON(QString("%1 (*%2)").arg(tr("Rules")).arg(EXT_JSON))
, m_formatFilterLegacy(QString("%1 (*%2)").arg(tr("Rules (legacy)")).arg(EXT_LEGACY))
, m_ui(new Ui::AutomatedRssDownloader)
, m_currentRuleItem(nullptr)
{
@ -390,17 +395,30 @@ void AutomatedRssDownloader::on_exportBtn_clicked()
return;
}
QString selectedFilter {m_formatFilterJSON};
QString path = QFileDialog::getSaveFileName(
this, tr("Where would you like to save the list?")
, QDir::homePath(), tr("Rules list (legacy)") + QString(" (*.rssrules)"));
this, tr("Export RSS rules"), QDir::homePath()
, QString("%1;;%2").arg(m_formatFilterJSON).arg(m_formatFilterLegacy), &selectedFilter);
if (path.isEmpty()) return;
if (!path.endsWith(".rssrules", Qt::CaseInsensitive))
path += ".rssrules";
const RSS::AutoDownloader::RulesFileFormat format {
(selectedFilter == m_formatFilterJSON)
? RSS::AutoDownloader::RulesFileFormat::JSON
: RSS::AutoDownloader::RulesFileFormat::Legacy
};
QFile file(path);
if (format == RSS::AutoDownloader::RulesFileFormat::JSON) {
if (!path.endsWith(EXT_JSON, Qt::CaseInsensitive))
path += EXT_JSON;
}
else {
if (!path.endsWith(EXT_LEGACY, Qt::CaseInsensitive))
path += EXT_LEGACY;
}
QFile file {path};
if (!file.open(QFile::WriteOnly)
|| (file.write(RSS::AutoDownloader::instance()->exportRulesToLegacyFormat()) == -1)) {
|| (file.write(RSS::AutoDownloader::instance()->exportRules(format)) == -1)) {
QMessageBox::critical(
this, tr("I/O Error")
, tr("Failed to create the destination file. Reason: %1").arg(file.errorString()));
@ -409,13 +427,14 @@ void AutomatedRssDownloader::on_exportBtn_clicked()
void AutomatedRssDownloader::on_importBtn_clicked()
{
QString selectedFilter {m_formatFilterJSON};
QString path = QFileDialog::getOpenFileName(
this, tr("Please point to the RSS download rules file")
, QDir::homePath(), tr("Rules list (legacy)") + QString(" (*.rssrules)"));
this, tr("Import RSS rules"), QDir::homePath()
, QString("%1;;%2").arg(m_formatFilterJSON).arg(m_formatFilterLegacy), &selectedFilter);
if (path.isEmpty() || !QFile::exists(path))
return;
QFile file(path);
QFile file {path};
if (!file.open(QIODevice::ReadOnly)) {
QMessageBox::critical(
this, tr("I/O Error")
@ -423,10 +442,19 @@ void AutomatedRssDownloader::on_importBtn_clicked()
return;
}
if (!RSS::AutoDownloader::instance()->importRulesFromLegacyFormat(file.readAll())) {
const RSS::AutoDownloader::RulesFileFormat format {
(selectedFilter == m_formatFilterJSON)
? RSS::AutoDownloader::RulesFileFormat::JSON
: RSS::AutoDownloader::RulesFileFormat::Legacy
};
try {
RSS::AutoDownloader::instance()->importRules(file.readAll(),format);
}
catch (const RSS::ParsingError &error) {
QMessageBox::critical(
this, tr("Import Error")
, tr("Failed to import the selected rules file."));
, tr("Failed to import the selected rules file. Reason: %1").arg(error.message()));
}
}

3
src/gui/rss/automatedrssdownloader.h
View file

@ -96,6 +96,9 @@ private:
void updateFeedList();
void addFeedArticlesToTree(RSS::Feed *feed, const QStringList &articles);
const QString m_formatFilterJSON;
const QString m_formatFilterLegacy;
Ui::AutomatedRssDownloader *m_ui;
QListWidgetItem *m_currentRuleItem;
QShortcut *m_editHotkey;