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OBAKitCore/Location/Regions/RegionsServiceFileManagerProtocol.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,74 @@ | ||
| // | ||
| // RegionsServiceFileManagerProtocol.swift | ||
| // OBAKit | ||
| // | ||
| // Copyright © Open Transit Software Foundation | ||
| // This source code is licensed under the Apache 2.0 license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
| // | ||
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| import Foundation | ||
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| /// A protocol defining file management operations. | ||
| public protocol RegionsServiceFileManagerProtocol: AnyObject { | ||
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| /// Saves the Codable object to the specified directory with the given name. | ||
| /// | ||
| /// - Parameters: | ||
| /// - object: The Codable object to save. | ||
| /// - destination: The destination specifying where to save the object. | ||
| func save<T: Codable>(_ object: T, to destination: URL) throws | ||
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| /// Loads a Codable object of the specified type from the file with the given URL. | ||
| /// | ||
| /// - Parameters: | ||
| /// - type: The type of the Codable object to load. | ||
| /// - fileURL: The URL of the file to load the object from. | ||
| /// - Returns: The decoded Codable object. | ||
| func load<T: Codable>(_ type: T.Type, from fileURL: URL) throws -> T | ||
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| /// Removes the file at the specified destination. | ||
| /// | ||
| /// - Parameters: | ||
| /// - destination: The destination specifying which file to remove. | ||
| func remove(at destination: URL) throws | ||
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| /// Returns an array of URLs for the items at the specified URL. | ||
| /// | ||
| /// - Parameters: | ||
| /// - destination: The destination specifying where to load contents of. | ||
| /// - Returns: An array of URLs for the items in the directory. | ||
| func urls(at destination: URL) throws -> [URL] | ||
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| } | ||
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| extension FileManager: RegionsServiceFileManagerProtocol { | ||
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| /// Creates a directory at the specified URL if it doesn't already exist. | ||
| private func createDirectoryIfNeeded(at url: URL) throws { | ||
| guard !fileExists(atPath: url.path) else { return } | ||
| try createDirectory(at: url, withIntermediateDirectories: true, attributes: nil) | ||
| } | ||
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| public func urls(at destination: URL) throws -> [URL] { | ||
| return try contentsOfDirectory(at: destination, includingPropertiesForKeys: nil) | ||
| } | ||
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| public func load<T: Codable>(_ type: T.Type, from fileURL: URL) throws -> T { | ||
| let data = try Data(contentsOf: fileURL) | ||
| return try JSONDecoder().decode(T.self, from: data) | ||
| } | ||
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| public func save<T: Codable>(_ object: T, to destination: URL) throws { | ||
| let directoryURL = destination.deletingLastPathComponent() | ||
| try createDirectoryIfNeeded(at: directoryURL) | ||
| let encoded = try JSONEncoder().encode(object) | ||
| try encoded.write(to: destination) | ||
| } | ||
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| public func remove(at destination: URL) throws { | ||
| guard fileExists(atPath: destination.path) else { return } | ||
| try removeItem(at: destination) | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| // | ||
| // FileManagerMock.swift | ||
| // OBAKitTests | ||
| // | ||
| // Copyright © Open Transit Software Foundation | ||
| // This source code is licensed under the Apache 2.0 license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
| // | ||
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| import Foundation | ||
| import OBAKitCore | ||
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| class RegionsServiceFileManagerMock: RegionsServiceFileManagerProtocol { | ||
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| var savedObjects: [String: Data] = [:] | ||
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| func save<T>(_ object: T, to destination: URL) throws where T : Decodable, T : Encodable { | ||
| let encodedData = try JSONEncoder().encode(object) | ||
| savedObjects[destination.path] = encodedData | ||
| } | ||
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| func load<T>(_ type: T.Type, from fileURL: URL) throws -> T where T : Decodable { | ||
| let data = savedObjects[fileURL.path, default: Data()] | ||
| return try JSONDecoder().decode(T.self, from: data) | ||
| } | ||
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| func remove(at destination: URL) throws { | ||
| savedObjects.removeValue(forKey: destination.path) | ||
| } | ||
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| func urls(at destination: URL) throws -> [URL] { | ||
| return [] | ||
| } | ||
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| } |
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