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77 lines
2.8 KiB
Swift
77 lines
2.8 KiB
Swift
//
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// RSParsedFeedTransformer.swift
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// RSParser
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//
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// Created by Brent Simmons on 6/25/17.
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// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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// RSRSSParser and RSAtomParser were written in Objective-C quite a while ago.
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// They create an RSParsedFeed object and related Objective-C objects.
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// These functions take an RSParsedFeed and return a Swift-y ParsedFeed,
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// which is part of providing a single API for feed parsing.
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struct RSParsedFeedTransformer {
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static func parsedFeed(_ rsParsedFeed: RSParsedFeed) -> ParsedFeed {
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let items = parsedItems(rsParsedFeed.articles)
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return ParsedFeed(type: .rss, title: rsParsedFeed.title, homePageURL: rsParsedFeed.link, feedURL: rsParsedFeed.urlString, feedDescription: nil, nextURL: nil, iconURL: nil, faviconURL: nil, authors: nil, expired: false, hubs: nil, items: items)
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}
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}
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private extension RSParsedFeedTransformer {
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static func parsedItems(_ parsedArticles: Set<RSParsedArticle>) -> Set<ParsedItem> {
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// Create Set<ParsedItem> from Set<RSParsedArticle>
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return Set(parsedArticles.map(parsedItem))
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}
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static func parsedItem(_ parsedArticle: RSParsedArticle) -> ParsedItem {
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let uniqueID = parsedArticle.articleID
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let url = parsedArticle.permalink
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let externalURL = parsedArticle.link
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let title = parsedArticle.title
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let contentHTML = parsedArticle.body
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let datePublished = parsedArticle.datePublished
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let dateModified = parsedArticle.dateModified
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let authors = parsedAuthors(parsedArticle.authors)
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let attachments = parsedAttachments(parsedArticle.enclosures)
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return ParsedItem(syncServiceID: nil, uniqueID: uniqueID, feedURL: parsedArticle.feedURL, url: url, externalURL: externalURL, title: title, contentHTML: contentHTML, contentText: nil, summary: nil, imageURL: nil, bannerImageURL: nil, datePublished: datePublished, dateModified: dateModified, authors: authors, tags: nil, attachments: attachments)
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}
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static func parsedAuthors(_ authors: Set<RSParsedAuthor>?) -> Set<ParsedAuthor>? {
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guard let authors = authors, !authors.isEmpty else {
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return nil
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}
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let transformedAuthors = authors.compactMap { (author) -> ParsedAuthor? in
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return ParsedAuthor(name: author.name, url: author.url, avatarURL: nil, emailAddress: author.emailAddress)
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}
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return transformedAuthors.isEmpty ? nil : Set(transformedAuthors)
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}
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static func parsedAttachments(_ enclosures: Set<RSParsedEnclosure>?) -> Set<ParsedAttachment>? {
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guard let enclosures = enclosures, !enclosures.isEmpty else {
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return nil
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}
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let attachments = enclosures.compactMap { (enclosure) -> ParsedAttachment? in
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let sizeInBytes = enclosure.length > 0 ? enclosure.length : nil
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return ParsedAttachment(url: enclosure.url, mimeType: enclosure.mimeType, title: nil, sizeInBytes: sizeInBytes, durationInSeconds: nil)
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}
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return attachments.isEmpty ? nil : Set(attachments)
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}
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}
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