76 lines
2.3 KiB
Swift
76 lines
2.3 KiB
Swift
// (c) 2021 and onwards The vChewing Project (MIT-NTL License).
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// ====================
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// This code is released under the MIT license (SPDX-License-Identifier: MIT)
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// ... with NTL restriction stating that:
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// No trademark license is granted to use the trade names, trademarks, service
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// marks, or product names of Contributor, except as required to fulfill notice
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// requirements defined in MIT License.
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import Foundation
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import Shared
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public extension vChewingLM {
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@frozen struct LMPlainBopomofo {
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public private(set) var filePath: String?
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var dataMap: [String: String] = [:]
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public var count: Int { dataMap.count }
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public init() {
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dataMap = [:]
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}
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public var isLoaded: Bool { !dataMap.isEmpty }
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@discardableResult public mutating func open(_ path: String) -> Bool {
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if isLoaded { return false }
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let oldPath = filePath
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filePath = nil
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do {
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let rawData = try Data(contentsOf: URL(fileURLWithPath: path))
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if let rawJSON = try? JSONSerialization.jsonObject(with: rawData) as? [String: String] {
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dataMap = rawJSON
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} else {
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filePath = oldPath
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vCLog("↑ Exception happened when reading JSON file at: \(path).")
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return false
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}
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} catch {
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filePath = oldPath
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vCLog("\(error)")
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vCLog("↑ Exception happened when reading JSON file at: \(path).")
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return false
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}
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filePath = path
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return true
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}
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public mutating func clear() {
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filePath = nil
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dataMap.removeAll()
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}
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public func saveData() {
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guard let filePath = filePath, let plistURL = URL(string: filePath) else { return }
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do {
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let plistData = try PropertyListSerialization.data(fromPropertyList: dataMap, format: .binary, options: 0)
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try plistData.write(to: plistURL)
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} catch {
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vCLog("Failed to save current database to: \(filePath)")
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}
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}
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public func valuesFor(key: String) -> [String] {
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var pairs: [String] = []
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if let arrRangeRecords: String = dataMap[key]?.trimmingCharacters(in: .newlines) {
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pairs.append(contentsOf: arrRangeRecords.map(\.description))
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}
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return pairs.deduplicated
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}
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public func hasValuesFor(key: String) -> Bool { dataMap.keys.contains(key) }
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}
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}
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