mirror of
https://github.com/Ranchero-Software/NetNewsWire.git
synced 2024-12-08 23:45:37 +01:00
77 lines
2.3 KiB
Swift
77 lines
2.3 KiB
Swift
//
|
||
// HTMLFeedFinder.swift
|
||
// NetNewsWire
|
||
//
|
||
// Created by Brent Simmons on 8/7/16.
|
||
// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
|
||
//
|
||
|
||
import Foundation
|
||
import RSParser
|
||
|
||
private let feedURLWordsToMatch = ["feed", "xml", "rss", "atom", "json"]
|
||
|
||
class HTMLFeedFinder {
|
||
|
||
var feedSpecifiers: Set<FeedSpecifier> {
|
||
return Set(feedSpecifiersDictionary.values)
|
||
}
|
||
|
||
private var feedSpecifiersDictionary = [String: FeedSpecifier]()
|
||
|
||
init(parserData: ParserData) {
|
||
let metadata = RSHTMLMetadataParser.htmlMetadata(with: parserData)
|
||
|
||
for oneFeedLink in metadata.feedLinks {
|
||
if let oneURLString = oneFeedLink.urlString?.normalizedURL {
|
||
let oneFeedSpecifier = FeedSpecifier(title: oneFeedLink.title, urlString: oneURLString, source: .HTMLHead)
|
||
addFeedSpecifier(oneFeedSpecifier)
|
||
}
|
||
}
|
||
|
||
let bodyLinks = RSHTMLLinkParser.htmlLinks(with: parserData)
|
||
for oneBodyLink in bodyLinks {
|
||
|
||
if linkMightBeFeed(oneBodyLink), let normalizedURL = oneBodyLink.urlString?.normalizedURL {
|
||
let oneFeedSpecifier = FeedSpecifier(title: oneBodyLink.text, urlString: normalizedURL, source: .HTMLLink)
|
||
addFeedSpecifier(oneFeedSpecifier)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
private extension HTMLFeedFinder {
|
||
|
||
func addFeedSpecifier(_ feedSpecifier: FeedSpecifier) {
|
||
// If there’s an existing feed specifier, merge the two so that we have the best data. If one has a title and one doesn’t, use that non-nil title. Use the better source.
|
||
|
||
if let existingFeedSpecifier = feedSpecifiersDictionary[feedSpecifier.urlString] {
|
||
let mergedFeedSpecifier = existingFeedSpecifier.feedSpecifierByMerging(feedSpecifier)
|
||
feedSpecifiersDictionary[feedSpecifier.urlString] = mergedFeedSpecifier
|
||
}
|
||
else {
|
||
feedSpecifiersDictionary[feedSpecifier.urlString] = feedSpecifier
|
||
}
|
||
}
|
||
|
||
func urlStringMightBeFeed(_ urlString: String) -> Bool {
|
||
let massagedURLString = urlString.replacingOccurrences(of: "buzzfeed", with: "_")
|
||
|
||
for oneMatch in feedURLWordsToMatch {
|
||
let range = (massagedURLString as NSString).range(of: oneMatch, options: .caseInsensitive)
|
||
if range.length > 0 {
|
||
return true
|
||
}
|
||
}
|
||
|
||
return false
|
||
}
|
||
|
||
func linkMightBeFeed(_ link: RSHTMLLink) -> Bool {
|
||
if let linkURLString = link.urlString, urlStringMightBeFeed(linkURLString) {
|
||
return true
|
||
}
|
||
return false
|
||
}
|
||
}
|