tdesktop/Telegram/SourceFiles/chat_helpers/spellchecker_common.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "chat_helpers/spellchecker_common.h"
#ifndef TDESKTOP_DISABLE_SPELLCHECK
#include "base/platform/base_platform_info.h"
#include "base/zlib_help.h"
#include "data/data_session.h"
#include "lang/lang_instance.h"
#include "lang/lang_keys.h"
#include "main/main_account.h"
#include "main/main_domain.h"
#include "main/main_session.h"
#include "mainwidget.h"
#include "spellcheck/platform/platform_spellcheck.h"
#include "spellcheck/spellcheck_utils.h"
#include "spellcheck/spellcheck_value.h"
#include "core/application.h"
#include "core/core_settings.h"
#include <QtGui/QGuiApplication>
#include <QtGui/QInputMethod>
namespace Spellchecker {
namespace {
using namespace Storage::CloudBlob;
constexpr auto kDictExtensions = { "dic", "aff" };
constexpr auto kExceptions = {
AppFile,
"\xd0\xa2\xd0\xb5\xd0\xbb\xd0\xb5\xd0\xb3\xd1\x80\xd0\xb0\xd0\xbc"_cs,
};
// 31 - QLocale::English, 91 - QLocale::Portuguese.
constexpr auto kLangsForLWC = { 31, 91 };
// 225 - QLocale::UnitesStates, 30 - QLocale::Brazil.
constexpr auto kDefaultCountries = { 225, 30 };
// Language With Country.
inline auto LWC(QLocale::Country country) {
const auto l = QLocale::matchingLocales(
QLocale::AnyLanguage,
QLocale::AnyScript,
country)[0];
if (ranges::contains(kDefaultCountries, country)) {
return int(l.language());
}
return (l.language() * 1000) + country;
}
inline auto LanguageFromLocale(QLocale loc) {
const auto locLang = int(loc.language());
return (ranges::contains(kLangsForLWC, locLang)
&& (loc.country() != QLocale::AnyCountry))
? LWC(loc.country())
: locLang;
}
const auto kDictionaries = {
Dict{{ QLocale::English, 649, 174'516, "English" }}, // en_US
Dict{{ QLocale::Bulgarian, 594, 229'658, "\xd0\x91\xd1\x8a\xd0\xbb\xd0\xb3\xd0\xb0\xd1\x80\xd1\x81\xd0\xba\xd0\xb8" }}, // bg_BG
Dict{{ QLocale::Catalan, 595, 417'611, "\x43\x61\x74\x61\x6c\xc3\xa0" }}, // ca_ES
Dict{{ QLocale::Czech, 596, 860'286, "\xc4\x8c\x65\xc5\xa1\x74\x69\x6e\x61" }}, // cs_CZ
Dict{{ QLocale::Welsh, 597, 177'305, "\x43\x79\x6d\x72\x61\x65\x67" }}, // cy_GB
Dict{{ QLocale::Danish, 598, 345'874, "\x44\x61\x6e\x73\x6b" }}, // da_DK
Dict{{ QLocale::German, 599, 2'412'780, "\x44\x65\x75\x74\x73\x63\x68" }}, // de_DE
Dict{{ QLocale::Greek, 600, 1'389'160, "\xce\x95\xce\xbb\xce\xbb\xce\xb7\xce\xbd\xce\xb9\xce\xba\xce\xac" }}, // el_GR
Dict{{ LWC(QLocale::Australia), 601, 175'266, "English (Australia)" }}, // en_AU
Dict{{ LWC(QLocale::Canada), 602, 174'295, "English (Canada)" }}, // en_CA
Dict{{ LWC(QLocale::UnitedKingdom), 603, 174'433, "English (United Kingdom)" }}, // en_GB
Dict{{ QLocale::Spanish, 604, 264'717, "\x45\x73\x70\x61\xc3\xb1\x6f\x6c" }}, // es_ES
Dict{{ QLocale::Estonian, 605, 757'394, "\x45\x65\x73\x74\x69" }}, // et_EE
Dict{{ QLocale::Persian, 606, 333'911, "\xd9\x81\xd8\xa7\xd8\xb1\xd8\xb3\xdb\x8c" }}, // fa_IR
Dict{{ QLocale::French, 607, 321'391, "\x46\x72\x61\x6e\xc3\xa7\x61\x69\x73" }}, // fr_FR
Dict{{ QLocale::Hebrew, 608, 622'550, "\xd7\xa2\xd7\x91\xd7\xa8\xd7\x99\xd7\xaa" }}, // he_IL
Dict{{ QLocale::Hindi, 609, 56'105, "\xe0\xa4\xb9\xe0\xa4\xbf\xe0\xa4\xa8\xe0\xa5\x8d\xe0\xa4\xa6\xe0\xa5\x80" }}, // hi_IN
Dict{{ QLocale::Croatian, 610, 668'876, "\x48\x72\x76\x61\x74\x73\x6b\x69" }}, // hr_HR
Dict{{ QLocale::Hungarian, 611, 660'402, "\x4d\x61\x67\x79\x61\x72" }}, // hu_HU
Dict{{ QLocale::Armenian, 612, 928'746, "\xd5\x80\xd5\xa1\xd5\xb5\xd5\xa5\xd6\x80\xd5\xa5\xd5\xb6" }}, // hy_AM
Dict{{ QLocale::Indonesian, 613, 100'134, "\x49\x6e\x64\x6f\x6e\x65\x73\x69\x61" }}, // id_ID
Dict{{ QLocale::Italian, 614, 324'613, "\x49\x74\x61\x6c\x69\x61\x6e\x6f" }}, // it_IT
Dict{{ QLocale::Korean, 615, 1'256'987, "\xed\x95\x9c\xea\xb5\xad\xec\x96\xb4" }}, // ko_KR
Dict{{ QLocale::Lithuanian, 616, 267'427, "\x4c\x69\x65\x74\x75\x76\x69\xc5\xb3" }}, // lt_LT
Dict{{ QLocale::Latvian, 617, 641'602, "\x4c\x61\x74\x76\x69\x65\xc5\xa1\x75" }}, // lv_LV
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Dict{{ QLocale::NorwegianBokmal, 618, 588'650, "\x4e\x6f\x72\x73\x6b" }}, // nb_NO
Dict{{ QLocale::Dutch, 619, 743'406, "\x4e\x65\x64\x65\x72\x6c\x61\x6e\x64\x73" }}, // nl_NL
Dict{{ QLocale::Polish, 620, 1'015'747, "\x50\x6f\x6c\x73\x6b\x69" }}, // pl_PL
Dict{{ QLocale::Portuguese, 621, 1'231'999, "\x50\x6f\x72\x74\x75\x67\x75\xc3\xaa\x73 (Brazil)" }}, // pt_BR
Dict{{ LWC(QLocale::Portugal), 622, 138'571, "\x50\x6f\x72\x74\x75\x67\x75\xc3\xaa\x73" }}, // pt_PT
Dict{{ QLocale::Romanian, 623, 455'643, "\x52\x6f\x6d\xc3\xa2\x6e\xc4\x83" }}, // ro_RO
Dict{{ QLocale::Russian, 624, 463'194, "\xd0\xa0\xd1\x83\xd1\x81\xd1\x81\xd0\xba\xd0\xb8\xd0\xb9" }}, // ru_RU
Dict{{ QLocale::Slovak, 625, 525'328, "\x53\x6c\x6f\x76\x65\x6e\xc4\x8d\x69\x6e\x61" }}, // sk_SK
Dict{{ QLocale::Slovenian, 626, 1'143'710, "\x53\x6c\x6f\x76\x65\x6e\xc5\xa1\xc4\x8d\x69\x6e\x61" }}, // sl_SI
Dict{{ QLocale::Albanian, 627, 583'412, "\x53\x68\x71\x69\x70" }}, // sq_AL
Dict{{ QLocale::Swedish, 628, 593'877, "\x53\x76\x65\x6e\x73\x6b\x61" }}, // sv_SE
Dict{{ QLocale::Tamil, 629, 323'193, "\xe0\xae\xa4\xe0\xae\xae\xe0\xae\xbf\xe0\xae\xb4\xe0\xaf\x8d" }}, // ta_IN
Dict{{ QLocale::Tajik, 630, 369'931, "\xd0\xa2\xd0\xbe\xd2\xb7\xd0\xb8\xd0\xba\xd3\xa3" }}, // tg_TG
Dict{{ QLocale::Turkish, 631, 4'301'099, "\x54\xc3\xbc\x72\x6b\xc3\xa7\x65" }}, // tr_TR
Dict{{ QLocale::Ukrainian, 632, 445'711, "\xd0\xa3\xd0\xba\xd1\x80\xd0\xb0\xd1\x97\xd0\xbd\xd1\x81\xd1\x8c\xd0\xba\xd0\xb0" }}, // uk_UA
Dict{{ QLocale::Vietnamese, 633, 12'949, "\x54\x69\xe1\xba\xbf\x6e\x67\x20\x56\x69\xe1\xbb\x87\x74" }}, // vi_VN
// The Tajik code is 'tg_TG' in Chromium, but QT has only 'tg_TJ'.
};
inline auto IsSupportedLang(int lang) {
return ranges::contains(kDictionaries, lang, &Dict::id);
}
void EnsurePath() {
if (!QDir::current().mkpath(Spellchecker::DictionariesPath())) {
LOG(("App Error: Could not create dictionaries path."));
}
}
bool IsGoodPartName(const QString &name) {
return ranges::any_of(kDictExtensions, [&](const auto &ext) {
return name.endsWith(ext);
});
}
using DictLoaderPtr = std::shared_ptr<base::unique_qptr<DictLoader>>;
DictLoaderPtr BackgroundLoader;
rpl::event_stream<int> BackgroundLoaderChanged;
void SetBackgroundLoader(DictLoaderPtr loader) {
BackgroundLoader = std::move(loader);
}
void DownloadDictionaryInBackground(
not_null<Main::Session*> session,
int counter,
std::vector<int> langs) {
const auto id = langs[counter];
counter++;
const auto destroyer = [=] {
BackgroundLoader = nullptr;
BackgroundLoaderChanged.fire(0);
if (DictionaryExists(id)) {
auto dicts = Core::App().settings().dictionariesEnabled();
if (!ranges::contains(dicts, id)) {
dicts.push_back(id);
Core::App().settings().setDictionariesEnabled(std::move(dicts));
Core::App().saveSettingsDelayed();
}
}
if (counter >= langs.size()) {
return;
}
DownloadDictionaryInBackground(session, counter, langs);
};
if (DictionaryExists(id)) {
destroyer();
return;
}
auto sharedLoader = std::make_shared<base::unique_qptr<DictLoader>>();
*sharedLoader = base::make_unique_q<DictLoader>(
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QCoreApplication::instance(),
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session,
id,
GetDownloadLocation(id),
DictPathByLangId(id),
GetDownloadSize(id),
crl::guard(session, destroyer));
SetBackgroundLoader(std::move(sharedLoader));
BackgroundLoaderChanged.fire_copy(id);
}
void AddExceptions() {
const auto exceptions = ranges::views::all(
kExceptions
) | ranges::views::transform([](const auto &word) {
return word.utf16();
}) | ranges::views::filter([](const auto &word) {
return !(Platform::Spellchecker::IsWordInDictionary(word)
|| Spellchecker::IsWordSkippable(&word));
}) | ranges::to_vector;
ranges::for_each(exceptions, Platform::Spellchecker::AddWord);
}
} // namespace
DictLoaderPtr GlobalLoader() {
return BackgroundLoader;
}
rpl::producer<int> GlobalLoaderChanged() {
return BackgroundLoaderChanged.events();
}
DictLoader::DictLoader(
QObject *parent,
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not_null<Main::Session*> session,
int id,
MTP::DedicatedLoader::Location location,
const QString &folder,
int size,
Fn<void()> destroyCallback)
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: BlobLoader(parent, session, id, location, folder, size)
, _destroyCallback(std::move(destroyCallback)) {
}
void DictLoader::unpack(const QString &path) {
crl::async([=] {
const auto success = Spellchecker::UnpackDictionary(path, id());
if (success) {
QFile(path).remove();
destroy();
return;
}
crl::on_main([=] { fail(); });
});
}
void DictLoader::destroy() {
Expects(_destroyCallback);
crl::on_main(_destroyCallback);
}
void DictLoader::fail() {
BlobLoader::fail();
destroy();
}
std::vector<Dict> Dictionaries() {
return kDictionaries | ranges::to_vector;
}
int GetDownloadSize(int id) {
return ranges::find(kDictionaries, id, &Spellchecker::Dict::id)->size;
}
MTP::DedicatedLoader::Location GetDownloadLocation(int id) {
const auto username = kCloudLocationUsername.utf16();
const auto i = ranges::find(kDictionaries, id, &Spellchecker::Dict::id);
return MTP::DedicatedLoader::Location{ username, i->postId };
}
QString DictPathByLangId(int langId) {
EnsurePath();
return qsl("%1/%2").arg(
DictionariesPath(),
Spellchecker::LocaleFromLangId(langId).name());
}
QString DictionariesPath() {
return cWorkingDir() + qsl("tdata/dictionaries");
}
bool UnpackDictionary(const QString &path, int langId) {
const auto folder = DictPathByLangId(langId);
return UnpackBlob(path, folder, IsGoodPartName);
}
bool DictionaryExists(int langId) {
if (!langId) {
return true;
}
const auto folder = DictPathByLangId(langId) + '/';
return ranges::none_of(kDictExtensions, [&](const auto &ext) {
const auto name = Spellchecker::LocaleFromLangId(langId).name();
return !QFile(folder + name + '.' + ext).exists();
});
}
bool RemoveDictionary(int langId) {
if (!langId) {
return true;
}
const auto fileName = Spellchecker::LocaleFromLangId(langId).name();
const auto folder = qsl("%1/%2/").arg(
DictionariesPath(),
fileName);
return QDir(folder).removeRecursively();
}
bool WriteDefaultDictionary() {
// This is an unused function.
const auto en = QLocale::English;
if (DictionaryExists(en)) {
return false;
}
const auto fileName = QLocale(en).name();
const auto folder = qsl("%1/%2/").arg(
DictionariesPath(),
fileName);
QDir(folder).removeRecursively();
const auto path = folder + fileName;
QDir().mkpath(folder);
auto input = QFile(qsl(":/misc/en_US_dictionary"));
auto output = QFile(path);
if (input.open(QIODevice::ReadOnly)
&& output.open(QIODevice::WriteOnly)) {
output.write(input.readAll());
const auto result = Spellchecker::UnpackDictionary(path, en);
output.remove();
return result;
}
return false;
}
rpl::producer<QString> ButtonManageDictsState(
not_null<Main::Session*> session) {
if (Platform::Spellchecker::IsSystemSpellchecker()) {
return rpl::single(QString());
}
const auto computeString = [=] {
if (!Core::App().settings().spellcheckerEnabled()) {
return QString();
}
if (!Core::App().settings().dictionariesEnabled().size()) {
return QString();
}
const auto dicts = Core::App().settings().dictionariesEnabled();
const auto filtered = ranges::views::all(
dicts
) | ranges::views::filter(
DictionaryExists
) | ranges::to_vector;
const auto active = Platform::Spellchecker::ActiveLanguages();
return (active.size() == filtered.size())
? QString::number(filtered.size())
: tr::lng_contacts_loading(tr::now);
};
return rpl::single(
computeString()
) | rpl::then(
rpl::merge(
Spellchecker::SupportedScriptsChanged(),
Core::App().settings().dictionariesEnabledChanges(
) | rpl::to_empty,
Core::App().settings().spellcheckerEnabledChanges(
) | rpl::to_empty
) | rpl::map(computeString)
);
}
std::vector<int> DefaultLanguages() {
std::vector<int> langs;
const auto append = [&](const auto loc) {
const auto l = LanguageFromLocale(loc);
if (!ranges::contains(langs, l) && IsSupportedLang(l)) {
langs.push_back(l);
}
};
const auto method = QGuiApplication::inputMethod();
langs.reserve(method ? 3 : 2);
if (method) {
append(method->locale());
}
append(QLocale(Platform::SystemLanguage()));
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append(QLocale(Lang::LanguageIdOrDefault(Lang::Id())));
return langs;
}
void Start(not_null<Main::Session*> session) {
Spellchecker::SetPhrases({ {
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{ &ph::lng_spellchecker_submenu, tr::lng_spellchecker_submenu() },
{ &ph::lng_spellchecker_add, tr::lng_spellchecker_add() },
{ &ph::lng_spellchecker_remove, tr::lng_spellchecker_remove() },
{ &ph::lng_spellchecker_ignore, tr::lng_spellchecker_ignore() },
} });
const auto settings = &Core::App().settings();
auto &lifetime = session->lifetime();
const auto onEnabled = [=](auto enabled) {
Platform::Spellchecker::UpdateLanguages(
enabled
? settings->dictionariesEnabled()
: std::vector<int>());
};
const auto guard = gsl::finally([=] {
onEnabled(settings->spellcheckerEnabled());
});
if (Platform::Spellchecker::IsSystemSpellchecker()) {
Spellchecker::SupportedScriptsChanged()
| rpl::take(1)
| rpl::start_with_next(AddExceptions, lifetime);
return;
}
Spellchecker::SupportedScriptsChanged(
) | rpl::start_with_next(AddExceptions, lifetime);
Spellchecker::SetWorkingDirPath(DictionariesPath());
settings->dictionariesEnabledChanges(
) | rpl::start_with_next([](auto dictionaries) {
Platform::Spellchecker::UpdateLanguages(dictionaries);
}, lifetime);
settings->spellcheckerEnabledChanges(
) | rpl::start_with_next(onEnabled, lifetime);
const auto method = QGuiApplication::inputMethod();
const auto connectInput = [=] {
if (!method || !settings->spellcheckerEnabled()) {
return;
}
auto callback = [=] {
if (BackgroundLoader) {
return;
}
const auto l = LanguageFromLocale(method->locale());
if (!IsSupportedLang(l) || DictionaryExists(l)) {
return;
}
crl::on_main(session, [=] {
DownloadDictionaryInBackground(session, 0, { l });
});
};
QObject::connect(
method,
&QInputMethod::localeChanged,
std::move(callback));
};
if (settings->autoDownloadDictionaries()) {
session->data().contactsLoaded().changes(
) | rpl::start_with_next([=](bool loaded) {
if (!loaded) {
return;
}
DownloadDictionaryInBackground(session, 0, DefaultLanguages());
}, lifetime);
connectInput();
}
const auto disconnect = [=] {
QObject::disconnect(
method,
&QInputMethod::localeChanged,
nullptr,
nullptr);
};
lifetime.add([=] {
disconnect();
for (auto &[index, account] : session->domain().accounts()) {
if (const auto anotherSession = account->maybeSession()) {
if (anotherSession->uniqueId() != session->uniqueId()) {
Spellchecker::Start(anotherSession);
return;
}
}
}
});
rpl::combine(
settings->spellcheckerEnabledValue(),
settings->autoDownloadDictionariesValue()
) | rpl::start_with_next([=](bool spell, bool download) {
if (spell && download) {
connectInput();
return;
}
disconnect();
}, lifetime);
}
} // namespace Spellchecker
#endif // !TDESKTOP_DISABLE_SPELLCHECK