mirror of
https://github.com/Ranchero-Software/NetNewsWire.git
synced 2024-12-12 09:26:26 +01:00
145 lines
3.2 KiB
Swift
145 lines
3.2 KiB
Swift
//
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// NNW3Document.swift
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// NetNewsWire
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//
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// Created by Maurice Parker on 10/14/19.
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// Copyright © 2019 Ranchero Software. All rights reserved.
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//
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import Foundation
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import RSCore
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struct NNW3Document {
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private let children: [OPMLRepresentable]?
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private init(plist: [[String: AnyObject]]) {
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self.children = NNW3Folder.itemsWithPlist(plist: plist)
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}
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init?(subscriptionsPlistURL url: URL) {
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guard let data = try? Data(contentsOf: url) else {
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return nil
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}
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guard let plist = try? PropertyListSerialization.propertyList(from: data, options: [], format: nil) as? [[String: AnyObject]] else {
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return nil
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}
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self.init(plist: plist)
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}
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}
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// MARK: OPMLRepresentable
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extension NNW3Document: OPMLRepresentable {
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func OPMLString(indentLevel: Int, allowCustomAttributes: Bool) -> String {
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var s =
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"""
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<?xml version="1.0" encoding="UTF-8"?>
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<opml version="1.1">
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<head>
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<title>NetNewsWire 3 Subscriptions</title>
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</head>
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<body>
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"""
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if let children = children {
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for child in children {
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s += child.OPMLString(indentLevel: indentLevel + 1)
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}
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}
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s +=
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"""
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</body>
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</opml>
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"""
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return s
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}
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}
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// MARK: - NNW3Folder
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private struct NNW3Folder {
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private let title: String?
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private let children: [OPMLRepresentable]?
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init(plist: [String: Any]) {
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self.title = plist["name"] as? String
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guard let childrenArray = plist["childrenArray"] as? [[String: Any]] else {
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self.children = nil
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return
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}
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self.children = NNW3Folder.itemsWithPlist(plist: childrenArray)
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}
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static func itemsWithPlist(plist: [[String: Any]]) -> [OPMLRepresentable]? {
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// Also used by NNW3Document.
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var items = [OPMLRepresentable]()
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for child in plist {
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if child["isContainer"] as? Bool ?? false {
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items.append(NNW3Folder(plist: child))
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} else {
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items.append(NNW3Feed(plist: child))
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}
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}
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return items.isEmpty ? nil : items
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}
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}
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// MARK: OPMLRepresentable
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extension NNW3Folder: OPMLRepresentable {
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func OPMLString(indentLevel: Int, allowCustomAttributes: Bool) -> String {
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let t = title?.escapingSpecialXMLCharacters ?? ""
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guard let children = children else {
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// Empty folder.
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return "<outline text=\"\(t)\" title=\"\(t)\" />\n".prepending(tabCount: indentLevel)
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}
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var s = "<outline text=\"\(t)\" title=\"\(t)\">\n".prepending(tabCount: indentLevel)
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for child in children {
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s += child.OPMLString(indentLevel: indentLevel + 1)
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}
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s += "</outline>\n".prepending(tabCount: indentLevel)
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return s
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}
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}
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// MARK: - NNW3Feed
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private struct NNW3Feed {
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private let title: String?
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private let homePageURL: String?
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private let feedURL: String?
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init(plist: [String: Any]) {
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self.title = plist["name"] as? String
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self.homePageURL = plist["home"] as? String
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self.feedURL = plist["rss"] as? String
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}
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}
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// MARK: OPMLRepresentable
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extension NNW3Feed: OPMLRepresentable {
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func OPMLString(indentLevel: Int, allowCustomAttributes: Bool) -> String {
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let t = title?.escapingSpecialXMLCharacters ?? ""
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let p = homePageURL?.escapingSpecialXMLCharacters ?? ""
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let f = feedURL?.escapingSpecialXMLCharacters ?? ""
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var s = "<outline text=\"\(t)\" title=\"\(t)\" description=\"\" type=\"rss\" version=\"RSS\" htmlUrl=\"\(p)\" xmlUrl=\"\(f)\"/>\n"
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s = s.prepending(tabCount: indentLevel)
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return s
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}
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}
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