25 lines
572 B
Swift
25 lines
572 B
Swift
import Foundation
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public enum BookParserError: Error, CustomStringConvertible {
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case unsupportedFormat(String)
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public var description: String {
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switch self {
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case .unsupportedFormat(let ext): "unsupported file format: \(ext)"
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}
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}
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}
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public struct BookParser {
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public static func parse(url: URL) throws -> Book {
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switch url.pathExtension.lowercased() {
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case "epub":
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return try EPUBParser.parse(url: url)
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case "txt", "text":
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return try PlainTextParser.parse(url: url)
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default:
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throw BookParserError.unsupportedFormat(url.pathExtension)
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}
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}
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}
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