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47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "spellcheck/platform/mac/language_mac.h"
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#include "base/platform/mac/base_utilities_mac.h"
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#import <NaturalLanguage/NLLanguageRecognizer.h>
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using Platform::Q2NSString;
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using Platform::NS2QString;
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namespace Platform::Language {
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LanguageId Recognize(QStringView text) {
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if (@available(macOS 10.14, *)) {
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constexpr auto kMaxHypotheses = 3;
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static thread_local auto r = [] {
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return [[NLLanguageRecognizer alloc] init];
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}();
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[r processString:Q2NSString(text)];
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const auto hypotheses =
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[r languageHypothesesWithMaximum:kMaxHypotheses];
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[r reset];
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auto maxProbability = 0.;
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auto language = NLLanguage(nil);
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for (NLLanguage lang in hypotheses) {
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const auto probability = [hypotheses[lang] floatValue];
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if (probability > maxProbability) {
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maxProbability = probability;
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language = lang;
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}
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}
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if (language) {
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return { QLocale(NS2QString(language)).language() };
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}
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}
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return {};
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}
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} // namespace Platform::Language
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