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Create FaviconURLFinder, which pulls the favicon URL from the metadata of a web page.

This commit is contained in:
Brent Simmons 2017-11-20 13:16:06 -08:00
parent 6979b85fb5
commit 91895d4066
2 changed files with 47 additions and 0 deletions
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4
Evergreen.xcodeproj/project.pbxproj
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@ -106,6 +106,7 @@
84F2D53A1FC2308B00998D64 /* UnreadFeed.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84F2D5391FC2308B00998D64 /* UnreadFeed.swift */; };
84FB9A2F1EDCD6C4003D53B9 /* Sparkle.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 84FB9A2D1EDCD6B8003D53B9 /* Sparkle.framework */; };
84FB9A301EDCD6C4003D53B9 /* Sparkle.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 84FB9A2D1EDCD6B8003D53B9 /* Sparkle.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
84FF69B11FC3793300DC198E /* FaviconURLFinder.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84FF69B01FC3793300DC198E /* FaviconURLFinder.swift */; };
/* End PBXBuildFile section */
/* Begin PBXContainerItemProxy section */
@ -488,6 +489,7 @@
84F2D5361FC22FCB00998D64 /* TodayFeedDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TodayFeedDelegate.swift; sourceTree = "<group>"; };
84F2D5391FC2308B00998D64 /* UnreadFeed.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UnreadFeed.swift; sourceTree = "<group>"; };
84FB9A2D1EDCD6B8003D53B9 /* Sparkle.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Sparkle.framework; path = Frameworks/Vendor/Sparkle.framework; sourceTree = SOURCE_ROOT; };
84FF69B01FC3793300DC198E /* FaviconURLFinder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FaviconURLFinder.swift; sourceTree = "<group>"; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@ -579,6 +581,7 @@
isa = PBXGroup;
children = (
848F6AE41FC29CFA002D422E /* FaviconDownloader.swift */,
84FF69B01FC3793300DC198E /* FaviconURLFinder.swift */,
);
name = Favicons;
path = Evergreen/Favicons;
@ -1315,6 +1318,7 @@
84DAEE301F86CAFE0058304B /* OPMLImporter.swift in Sources */,
849A975C1ED9EB0D007D329B /* DefaultFeedsImporter.swift in Sources */,
849A97891ED9ECEF007D329B /* ArticleStyle.swift in Sources */,
84FF69B11FC3793300DC198E /* FaviconURLFinder.swift in Sources */,
849A978A1ED9ECEF007D329B /* ArticleStylesManager.swift in Sources */,
849A97791ED9EC04007D329B /* TimelineStringUtilities.swift in Sources */,
84F204CE1FAACB660076E152 /* FeedListViewController.swift in Sources */,

43
Evergreen/Favicons/FaviconURLFinder.swift Normal file
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@ -0,0 +1,43 @@
//
// FaviconURLFinder.swift
// Evergreen
//
// Created by Brent Simmons on 11/20/17.
// Copyright © 2017 Ranchero Software. All rights reserved.
//
import Foundation
import RSParser
import RSWeb
// The favicon URL may be specified in the head section of the home page.
struct FaviconURLFinder {
static func findFaviconURL(_ homePageURL: String, _ callback: @escaping (String?) -> Void) {
guard let url = URL(string: homePageURL) else {
callback(nil)
return
}
download(url) { (data, response, error) in
guard let data = data, let response = response, response.statusIsOK else {
callback(nil)
return
}
let link = faviconURL(homePageURL, data)
callback(link)
}
}
static private func faviconURL(_ url: String, _ webPageData: Data) -> String? {
let parserData = ParserData(url: url, data: webPageData)
let htmlMetadata = RSHTMLMetadataParser.htmlMetadata(with: parserData)
return htmlMetadata.faviconLink
}
}