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Trying to recognize the language of the Toot to set it correctly if none is provided (#633)

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Probability threshold arbitrary set to 85%.
Seems to work enough for French, English and Spanish.
Also tested and with only a few words, probability is low unless there is a very language specific word
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Thomas Durand 2023-02-03 15:45:59 +01:00 committed by GitHub
parent 61cd21d28b
commit 2a1d1fc697
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16
Packages/Status/Sources/Status/Editor/StatusEditorViewModel.swift
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@ -1,6 +1,7 @@
import DesignSystem
import Env
import Models
import NaturalLanguage
import Network
import PhotosUI
import SwiftUI
@ -126,6 +127,21 @@ public class StatusEditorViewModel: ObservableObject {
multiple: pollVotingFrequency.canVoteMultipleTimes,
expires_in: pollDuration.rawValue)
}
if !hasExplicitlySelectedLanguage {
// Attempt language resolution using Natural Language
let recognizer = NLLanguageRecognizer()
recognizer.processString(statusText.string)
// Use languageHypotheses to get the probability with it
let hypotheses = recognizer.languageHypotheses(withMaximum: 1)
// Assert that 85% probability is enough :)
// A one word toot that is en/fr compatible is only ~50% confident, for instance
if let (language, probability) = hypotheses.first, probability > 0.85 {
// rawValue return the IETF BCP 47 language tag
selectedLanguage = language.rawValue
}
}
let data = StatusData(status: statusText.string,
visibility: visibility,
inReplyToId: mode.replyToStatus?.id,