154 lines
3.7 KiB
Swift
154 lines
3.7 KiB
Swift
//
|
||
// OPMLFile.swift
|
||
// Account
|
||
//
|
||
// Created by Maurice Parker on 9/12/19.
|
||
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
|
||
//
|
||
|
||
import Foundation
|
||
import os.log
|
||
import RSCore
|
||
import RSParser
|
||
|
||
final class OPMLFile {
|
||
|
||
private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "opmlFile")
|
||
|
||
private let fileURL: URL
|
||
private let account: Account
|
||
private lazy var managedFile = ManagedResourceFile(fileURL: fileURL, load: loadCallback, save: saveCallback)
|
||
|
||
init(filename: String, account: Account) {
|
||
self.fileURL = URL(fileURLWithPath: filename)
|
||
self.account = account
|
||
}
|
||
|
||
func markAsDirty() {
|
||
managedFile.markAsDirty()
|
||
}
|
||
|
||
func load() {
|
||
managedFile.load()
|
||
}
|
||
|
||
func save() {
|
||
managedFile.saveIfNecessary()
|
||
}
|
||
|
||
func suspend() {
|
||
managedFile.suspend()
|
||
}
|
||
|
||
func resume() {
|
||
managedFile.resume()
|
||
}
|
||
|
||
}
|
||
|
||
private extension OPMLFile {
|
||
|
||
func loadCallback() {
|
||
guard let fileData = opmlFileData() else {
|
||
return
|
||
}
|
||
|
||
// Don't rebuild the account if the OPML hasn't changed since the last save
|
||
guard let opml = String(data: fileData, encoding: .utf8), opml != opmlDocument() else {
|
||
return
|
||
}
|
||
|
||
guard let opmlItems = parsedOPMLItems(fileData: fileData) else { return }
|
||
|
||
BatchUpdate.shared.perform {
|
||
account.topLevelWebFeeds.removeAll()
|
||
account.loadOPMLItems(opmlItems, parentFolder: nil)
|
||
}
|
||
}
|
||
|
||
func saveCallback() {
|
||
guard !account.isDeleted else { return }
|
||
|
||
let opmlDocumentString = opmlDocument()
|
||
|
||
let errorPointer: NSErrorPointer = nil
|
||
let fileCoordinator = NSFileCoordinator(filePresenter: managedFile)
|
||
|
||
fileCoordinator.coordinate(writingItemAt: fileURL, options: [], error: errorPointer, byAccessor: { writeURL in
|
||
do {
|
||
try opmlDocumentString.write(to: writeURL, atomically: true, encoding: .utf8)
|
||
} catch let error as NSError {
|
||
os_log(.error, log: log, "OPML save to disk failed: %@.", error.localizedDescription)
|
||
}
|
||
})
|
||
|
||
if let error = errorPointer?.pointee {
|
||
os_log(.error, log: log, "OPML save to disk coordination failed: %@.", error.localizedDescription)
|
||
}
|
||
}
|
||
|
||
func opmlFileData() -> Data? {
|
||
var fileData: Data? = nil
|
||
let errorPointer: NSErrorPointer = nil
|
||
let fileCoordinator = NSFileCoordinator(filePresenter: managedFile)
|
||
|
||
fileCoordinator.coordinate(readingItemAt: fileURL, options: [], error: errorPointer, byAccessor: { readURL in
|
||
do {
|
||
fileData = try Data(contentsOf: readURL)
|
||
} catch {
|
||
// Commented out because it’s not an error on first run.
|
||
// TODO: make it so we know if it’s first run or not.
|
||
//NSApplication.shared.presentError(error)
|
||
os_log(.error, log: log, "OPML read from disk failed: %@.", error.localizedDescription)
|
||
}
|
||
})
|
||
|
||
if let error = errorPointer?.pointee {
|
||
os_log(.error, log: log, "OPML read from disk coordination failed: %@.", error.localizedDescription)
|
||
}
|
||
|
||
return fileData
|
||
}
|
||
|
||
func parsedOPMLItems(fileData: Data) -> [RSOPMLItem]? {
|
||
let parserData = ParserData(url: fileURL.absoluteString, data: fileData)
|
||
var opmlDocument: RSOPMLDocument?
|
||
|
||
do {
|
||
opmlDocument = try RSOPMLParser.parseOPML(with: parserData)
|
||
} catch {
|
||
os_log(.error, log: log, "OPML Import failed: %@.", error.localizedDescription)
|
||
return nil
|
||
}
|
||
|
||
return opmlDocument?.children
|
||
}
|
||
|
||
func opmlDocument() -> String {
|
||
let escapedTitle = account.nameForDisplay.rs_stringByEscapingSpecialXMLCharacters()
|
||
let openingText =
|
||
"""
|
||
<?xml version="1.0" encoding="UTF-8"?>
|
||
<!-- OPML generated by NetNewsWire -->
|
||
<opml version="1.1">
|
||
<head>
|
||
<title>\(escapedTitle)</title>
|
||
</head>
|
||
<body>
|
||
|
||
"""
|
||
|
||
let middleText = account.OPMLString(indentLevel: 0, strictConformance: false)
|
||
|
||
let closingText =
|
||
"""
|
||
</body>
|
||
</opml>
|
||
"""
|
||
|
||
let opml = openingText + middleText + closingText
|
||
return opml
|
||
}
|
||
|
||
}
|