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KeywordsMinifier used for Minify ASO app
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| // | |
| // KeywordsMinifier.swift | |
| // MinifyASO | |
| // | |
| // Created by Damjan Dabo on 19.12.22. | |
| // | |
| import Foundation | |
| /// Used for Minify ASO app https://apps.apple.com/us/app/minify-aso-duplicate-keywords/id1660632226 | |
| struct KeywordsMinifier { | |
| // MARK: - Private properties | |
| private static let charsToSeparateBy: CharacterSet = [".", ",", "!", "?", " ", "\n"] | |
| // MARK: - Public funcs | |
| static func minifyKeywords( | |
| fromInput input: String, | |
| keywordsToExclude: String | |
| ) -> String { | |
| let minifiedKeywordsList = minifiedKeywordsList( | |
| input: input, | |
| keywordsToExclude: keywordsToExclude) | |
| return (minifiedKeywordsList ?? []).joined(separator: ",") | |
| } | |
| // MARK: - Private funcs | |
| private static func minifiedKeywordsList(input: String, keywordsToExclude: String) -> [String]? { | |
| let words = input | |
| .lowercased() | |
| .components(separatedBy: charsToSeparateBy) | |
| .filter({!$0.isEmpty}) | |
| print("With duplicates:\n\(words)") | |
| let removedPlurals = words | |
| .map { word in | |
| guard !("ios").contains(word) else { return word } | |
| if word.last == "s" { | |
| let removedSWord = word.dropLast() | |
| if removedSWord.last == "e" { | |
| return String(removedSWord.dropLast()) | |
| } else { | |
| return String(removedSWord) | |
| } | |
| } else { | |
| return word | |
| } | |
| } | |
| guard let uniqueOrdered = Array(NSOrderedSet(array: removedPlurals)) as? Array<String> else { | |
| print("Error") | |
| return nil | |
| } | |
| let keywordsToExcludeWords = keywordsToExclude | |
| .lowercased() | |
| .components(separatedBy: charsToSeparateBy) | |
| .filter({!$0.isEmpty}) | |
| let removedStopWords = uniqueOrdered | |
| .filter { !stopWords.contains($0) } | |
| .filter { !keywordsToExcludeWords.contains($0) } | |
| return removedStopWords | |
| } | |
| private static var stopWords: [String] { | |
| /// from https://appfigures.com/resources/guides/keyword-optimization-app-store-connect#4-eliminate-stop-words | |
| let stopWordsInput = """ | |
| a, about, above, after, again, against, all, am, an, and, any, app, are, aren't, as, at, be, because, been, before, being, below, between, both, but, by, can't, cannot, could, couldn't, did, didn't, do, does, doesn't, doing, don't, down, during, each, few, for, from, further, had, hadn't, has, hasn't, have, haven't, having, he, he'd, he'll, he's, her, here, here's, hers, herself, him, himself, his, how, how's, i, i'd, i'll, i'm, i've, if, in, into, is, isn't, it, it's, its, itself, let's, me, more, most, mustn't, my, myself, no, nor, not, of, off, on, once, only, or, other, ought, our, ours, ourselves, out, over, own, same, shan't, she, she'd, she'll, she's, should, shouldn't, so, some, such, than, that, that's, the, their, theirs, them, themselves, then, there, there's, these, they, they'd, they'll, they're, they've, this, those, through, to, too, under, until, up, very, was, wasn't, we, we'd, we'll, we're, we've, were, weren't, what, what's, when, when's, where, where's, which, while, who, who's, whom, why, why's, with, won't, would, wouldn't, you, you'd, you'll, you're, you've, your, yours, yourself, yourselves | |
| """ | |
| return stopWordsInput | |
| .lowercased() | |
| .components(separatedBy: charsToSeparateBy) | |
| .filter({!$0.isEmpty}) | |
| } | |
| } |
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