Unduhan SearchQueryParser - Unduhan kode sumber SearchQueryParser

SearchQueryParser

Kode sumber lainnya

1.0.0

Unduh

SearchQueryParser

SearchQueryParser adalah parser (dan penanda) kueri mesin pencari sederhana seperti Google untuk Swift. Dibutuhkan string pencarian dan membangun pohon sintaksis abstraknya. Paket ini berlaku untuk digunakan dengan Kit Pencarian Apple untuk menyorot hasil yang ditemukan.

Fitur

Tanpa pemindai (tanpa lexer)
Dukungan sintaksis seperti Boolean (AND ("&"), OR ("|"), NOT ("!") operator logika)
Wildcard awalan dan akhiran ("*")
Pencarian frasa
Toleran terhadap kesalahan sintaksis permintaan pencarian
Menyediakan fasilitas untuk menemukan istilah pencarian dalam teks masukan

Tata bahasa kueri penelusuran

Bentuk Backus–Naur (BNF):

 Query = Sweeping-Mute-And-Term, ⧚’?, EOF ;
Sweeping-Mute-And-Term = Mute-And-Term, { ⧚’?, Mute-And-Term }* ;
Mute-And-Term = Or-Term, Or-Term* ;
Or-Term = And-Term, {⧚?, (‘|’ | “OR”), And-Term }* ;
And-Term = Not-Term, {⧚?, (‘&’ | “AND”), Not-Term }* ;
Not-Term = ⧚?, (’!’ | “NOT”), Not-Term | Primary-Term ;
Primary-Term = ⧚?, ’(‘ ⧚?, Mute-And-Term, ⧚? ‘)’ |
               ⧚?, “‘“ ⧚?, Phrase, ⧚? “‘“ |
               ⧚?, Prefix-Wildcard-Search-Term |
               ⧚?, Suffix-Wildcard-Search-Term |
               ⧚?, Search-Term ;
Phrase = Search-Term, { ⧚, Search-Term }* ;
Prefix-Wildcard-Search-Term = ‘*’, Search-Term ;
Suffix-Wildcard-Search-Term = Search-Term, ‘*’ ;
Search-Term = Letter | Letter, Search-Term ;
Letter = Alpha | Digit | ‘_’ ;
⧚’ = ⧚-(“*” | “!” | “&” | “(“ | “)” | “””)
⧚ = { ? any-character ?-Letter }+ ;
Alpha = ? alpha-character ? ;
Digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;

Kasus penggunaan

Cetak pohon sintaksis abstrak permintaan pencarian

import SearchQueryParser

func printQueryAST ( _ query : String ) {
    guard let parser = SearchQueryParser ( query ) , let ast = parser . astRoot
    else {
        print ( " Couldn't parse " )
        return
    }
    print ( " AST: ( ast ) " )
}

printQueryAST ( " foo bar " )

Sorot kecocokan kueri penelusuran

import SearchQueryParser

func highlightSearchQueryMatches ( query : String , in text : NSMutableAttributedString ) {
    guard let queryTerms = SearchQueryParser ( query )
    else {
        print ( " No matches found " )
        return
    }
    let tokensProvider = SearchTextScanner ( text . string )
    guard let applicator = SearchQueryApplicator ( searchQueryTerms : queryTerms ,
                                                 textTokens : tokensProvider )
    else {
        print ( " Nothing was marked " )
        return
    }
    applicator . markedRanges . forEach { range in
        text . addAttribute ( . backgroundColor , value : NSColor . yellow , range : range )
    }
}
let text = NSMutableAttributedString ( string : " Lorem ipsum ... " )
highlightSearchQueryMatches ( query : " foo & bar " , in : text )

Instalasi

Paket Swift sebagai ketergantungan di Xcode 11+

Buka "File" -> "Paket Swift" -> "Tambahkan Ketergantungan Paket"
Tempelkan URL repositori Parser Kueri Pencarian ke dalam kolom pencarian:

https://github.com/SerhiyButz/SearchQueryParser.git

Klik "Selanjutnya"
Pastikan bidang "Aturan" disetel seperti ini: "Versi: Hingga Jurusan Berikutnya: 1.3.0"
Klik "Berikutnya" untuk menyelesaikan

Untuk info lebih lanjut, lihat di sini.

KakaoPod

Tambahkan yang berikut ke Podfile Anda:

 platform :osx , '10.12'

target 'YOUR-TARGET' do
  use_frameworks!
  pod 'SearchQueryParser' , :git => 'https://github.com/SerhiyButz/SearchQueryParser.git'
end