data/SpellLanguageMemory.cpp
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|---|---|---|---|
| 1 | #include "SpellLanguageMemory.h" | ||
| 2 | |||
| 3 | #include <QCryptographicHash> | ||
| 4 | #include <QDir> | ||
| 5 | #include <QFile> | ||
| 6 | #include <QFileInfo> | ||
| 7 | #include <QJsonDocument> | ||
| 8 | #include <QJsonObject> | ||
| 9 | #include <QRegularExpression> | ||
| 10 | #include <QSaveFile> | ||
| 11 | #include <algorithm> | ||
| 12 | |||
| 13 | 796 | QString SpellLanguageMemory::pathFor(const QString &profileDirectory) { | |
| 14 |
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796 | return profileDirectory + QStringLiteral("/spell-languages.json"); |
| 15 | } | ||
| 16 | |||
| 17 | 917 | QString SpellLanguageMemory::keyOf(const QString &address) { | |
| 18 | return QString::fromLatin1( | ||
| 19 |
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917 | QCryptographicHash::hash(address.trimmed().toLower().toUtf8(), QCryptographicHash::Sha256).toHex()); |
| 20 | } | ||
| 21 | |||
| 22 | 798 | void SpellLanguageMemory::load() { | |
| 23 | 798 | m_entries.clear(); | |
| 24 | 798 | m_counter = 0; | |
| 25 |
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798 | QFile file(m_path); |
| 26 |
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798 | if (!file.exists() || file.size() > MaxFileBytes || !file.open(QIODevice::ReadOnly)) return; |
| 27 |
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2 | const QJsonObject root = QJsonDocument::fromJson(file.read(MaxFileBytes)).object(); |
| 28 |
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2 | const QJsonObject entries = root.value(QStringLiteral("languages")).toObject(); |
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3 | static const QRegularExpression kKey(QStringLiteral("^[0-9a-f]{64}$")); |
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3 | static const QRegularExpression kLanguage(QStringLiteral("^[A-Za-z]{2,3}([_-][A-Za-z0-9]{2,8}){0,2}$")); |
| 31 |
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6 | for (auto it = entries.begin(); it != entries.end() && m_entries.size() < MaxEntries; ++it) { |
| 32 |
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4 | const QJsonObject value = it.value().toObject(); |
| 33 |
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4 | const QString language = value.value(QStringLiteral("language")).toString(); |
| 34 |
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7 | if (!kKey.match(it.key()).hasMatch() || !kLanguage.match(language).hasMatch()) continue; |
| 35 |
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2 | const qint64 used = qMax<qint64>(0, value.value(QStringLiteral("used")).toInteger()); |
| 36 |
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2 | m_entries.insert(it.key(), {language, used}); |
| 37 | 2 | m_counter = qMax(m_counter, used); | |
| 38 | 6 | } | |
| 39 | 800 | } | |
| 40 | |||
| 41 | 542 | bool SpellLanguageMemory::save() const { | |
| 42 |
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542 | QJsonObject entries; |
| 43 |
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135815 | for (auto it = m_entries.cbegin(); it != m_entries.cend(); ++it) |
| 44 |
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676365 | entries.insert(it.key(), QJsonObject{{QStringLiteral("language"), it->language}, {QStringLiteral("used"), it->used}}); |
| 45 | const QByteArray bytes = | ||
| 46 |
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3252 | QJsonDocument(QJsonObject{{QStringLiteral("version"), 1}, {QStringLiteral("languages"), entries}}) |
| 47 |
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542 | .toJson(QJsonDocument::Compact); |
| 48 |
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542 | QDir().mkpath(QFileInfo(m_path).absolutePath()); |
| 49 |
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542 | QSaveFile file(m_path); |
| 50 |
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1626 | return file.open(QIODevice::WriteOnly) && file.setPermissions(QFile::ReadOwner | QFile::WriteOwner) && |
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2168 | file.write(bytes) == bytes.size() && file.commit(); |
| 52 | 407987 | } | |
| 53 | |||
| 54 | 926 | QString SpellLanguageMemory::languageFor(const QString &address) const { | |
| 55 |
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926 | if (address.trimmed().isEmpty()) return {}; |
| 56 |
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369 | return m_entries.value(keyOf(address)).language; |
| 57 | } | ||
| 58 | |||
| 59 | 551 | void SpellLanguageMemory::remember(const QString &address, const QString &language) { | |
| 60 |
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557 | if (address.trimmed().isEmpty() || language.isEmpty() || language.size() > 32) return; |
| 61 |
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548 | const QString key = keyOf(address); |
| 62 |
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548 | if (m_entries.value(key).language == language && m_entries.value(key).used == m_counter) return; |
| 63 | 542 | m_entries.insert(key, {language, ++m_counter}); | |
| 64 |
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562 | while (m_entries.size() > MaxEntries) { |
| 65 |
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20 | const auto oldest = std::min_element(m_entries.cbegin(), m_entries.cend(), |
| 66 | 10000 | [](const Entry &a, const Entry &b) { return a.used < b.used; }); | |
| 67 |
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20 | m_entries.remove(oldest.key()); |
| 68 | } | ||
| 69 |
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542 | save(); |
| 70 | 1090 | } | |
| 71 |