A simple iOS/macOS/tvOS full text search (FTS) class using SQLite FTS5 using a similar API as SKSearchKit with no external dependencides
I wanted to add a full text search index to my macOS/iOS application and realized that SKSearchKit (and thus DFSearchKit is macOS only.
SQLite has solid FTS capabilities via and I wanted to be able to use these in a similar way as SKSearchKit. I also wanted a simple wrapper that didn't have any dependencies. As much as I love GRDB I certainly didn't need everything that it provides.
I also wanted something that can both :-
- work independently in an app that doesn't have a traditional database, and
- work in an app with an existing SQLite database.
- be able to be shared between applications on iOS, macOS, macOS (Catalyst) and tvOS.
// Create an index
let index = DSFFullTextSearchIndex()
index.create(filePath: /* some file path */)
//
// Add some documents
//
let url1 = URL(string: "demo://maintext/1")
index.add(url: url1, text: "Sphinx of black quartz judge my vow")
let url2 = URL(string: "demo://maintext/2")
index.add(url: url2, text: "Quick brown fox jumps over the lazy dog")
let url3 = URL(string: "demo://maintext/3")
index.add(url: url3, text: "The dog didn't like the bird sitting on the fence and left quietly")
//
// Search
//
let urls1 = index.search(text: "quartz") // single match - url1
let urls2 = index.search(text: "quick") // single match - url2
let urls3 = index.search(text: "dog") // two matches - url1 and url3
// Search with a wildcard
let urls4 = index.search(text: "qu*") // three matches = url1 (quartz), url2 (quick) and url3 (quietly)Generated using swift-doc.
- Add a custom tokenizer to more accurately handle stop words and CJK
- Character folding etc.
- A ton of more stuff too.
MIT License
Copyright (c) 2020 Darren Ford
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