2019-09-13 01:05:29 +02:00
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//
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// OPMLFile.swift
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// Account
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//
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// Created by Maurice Parker on 9/12/19.
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// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import os.log
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import RSCore
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import RSParser
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final class OPMLFile: NSObject, NSFilePresenter {
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private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "account")
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private let filename: String
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private let account: Account
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private let operationQueue: OperationQueue
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var presentedItemURL: URL? {
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2019-09-13 01:41:42 +02:00
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return URL(fileURLWithPath: filename)
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2019-09-13 01:05:29 +02:00
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}
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var presentedItemOperationQueue: OperationQueue {
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return operationQueue
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}
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init(filename: String, account: Account) {
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self.filename = filename
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self.account = account
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operationQueue = OperationQueue()
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operationQueue.maxConcurrentOperationCount = 1
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2019-09-13 01:41:42 +02:00
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super.init()
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NSFileCoordinator.addFilePresenter(self)
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}
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func presentedItemDidChange() {
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DispatchQueue.main.async {
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self.reload()
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}
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2019-09-13 01:05:29 +02:00
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}
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func load() {
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2019-09-13 01:41:42 +02:00
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guard let opmlItems = parsedOPMLItems() else { return }
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BatchUpdate.shared.perform {
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account.loadOPMLItems(opmlItems, parentFolder: nil)
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}
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}
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func save() {
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let opmlDocumentString = opmlDocument()
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do {
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let url = URL(fileURLWithPath: filename)
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try opmlDocumentString.write(to: url, atomically: true, encoding: .utf8)
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} catch let error as NSError {
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os_log(.error, log: log, "Save to disk failed: %@.", error.localizedDescription)
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}
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}
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}
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private extension OPMLFile {
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func reload() {
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guard let opmlItems = parsedOPMLItems() else { return }
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BatchUpdate.shared.perform {
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account.topLevelFeeds.removeAll()
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account.loadOPMLItems(opmlItems, parentFolder: nil)
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}
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}
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func parsedOPMLItems() -> [RSOPMLItem]? {
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2019-09-13 01:05:29 +02:00
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let opmlFileURL = URL(fileURLWithPath: filename)
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var fileData: Data?
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do {
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fileData = try Data(contentsOf: opmlFileURL)
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} catch {
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// Commented out because it’s not an error on first run.
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// TODO: make it so we know if it’s first run or not.
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//NSApplication.shared.presentError(error)
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2019-09-13 01:41:42 +02:00
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return nil
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2019-09-13 01:05:29 +02:00
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}
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guard let opmlData = fileData else {
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2019-09-13 01:41:42 +02:00
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return nil
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2019-09-13 01:05:29 +02:00
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}
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let parserData = ParserData(url: opmlFileURL.absoluteString, data: opmlData)
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var opmlDocument: RSOPMLDocument?
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do {
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opmlDocument = try RSOPMLParser.parseOPML(with: parserData)
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} catch {
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os_log(.error, log: log, "OPML Import failed: %@.", error.localizedDescription)
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2019-09-13 01:41:42 +02:00
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return nil
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2019-09-13 01:05:29 +02:00
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}
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2019-09-13 01:41:42 +02:00
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return opmlDocument?.children
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2019-09-13 01:05:29 +02:00
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}
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func opmlDocument() -> String {
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let escapedTitle = account.nameForDisplay.rs_stringByEscapingSpecialXMLCharacters()
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let openingText =
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"""
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- OPML generated by NetNewsWire -->
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<opml version="1.1">
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<head>
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<title>\(escapedTitle)</title>
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</head>
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<body>
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"""
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let middleText = account.OPMLString(indentLevel: 0)
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let closingText =
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"""
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</body>
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</opml>
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"""
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let opml = openingText + middleText + closingText
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return opml
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}
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}
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