Read your Safari Reading List and dump to plain text

ReadingListReader.swift

import Foundation

func fatalerror(_ text : String) {
    fputs(text, __stderrp)
    exit(-1)
}

struct ReadingListItem {
    init(title: String?, previewText: String?, url: URL, dateAdded: Date) {
        self.title = title
        self.previewText = previewText
        self.url = url
        self.dateAdded = dateAdded
    }
    
    let title : String?
    let previewText : String?
    let url : URL
    let dateAdded : Date
}

var items = [ReadingListItem]()

let outputPath = "/Users/yaakov/Sync/Personal/readinglist"

let libraryDirectory = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true)[0]
if let
    bookmarks = NSDictionary(contentsOfFile: "\(outputPath)/Bookmarks.plist"),
    let children = bookmarks["Children"] as? [NSDictionary] {
    
    for var item in children {
        if item["WebBookmarkType"] as? String != "WebBookmarkTypeList" || item["Title"] as? String != "com.apple.ReadingList" {
            continue
        }
        
        let readingListItems = item["Children"] as? [NSDictionary]
        if let readingListItems = readingListItems {
            for var currentItem in readingListItems {
                let title = (currentItem["URIDictionary"] as? NSDictionary)?["title"] as? String
                let uri = currentItem["URLString"] as? String
                let rldata = currentItem["ReadingList"] as? NSDictionary
                let preview = rldata?["PreviewText"] as? String
                let date = rldata?["DateAdded"] as? Date
                
                if let _ = title, let _ = uri {
                    print()
                } else {
                    fatalerror("Missing title or uri for item.")
                }
                
                if date == nil {
                    fatalerror("Missing date for item.")
                }
                
                if let urlText = uri, let url = URL(string: urlText) {
                    let item = ReadingListItem(title: title, previewText: preview, url: url, dateAdded: date!)
                    items.append(item)
                }
            }
            
        } else {
            fatalerror("Could not find a Reading List bookmarks set.")
        }
    }
} else {
    fatalerror("Unable to load Safari Bookmarks.")
}


let itemsByDomain = Dictionary(grouping: items, by: { $0.url.host?.lowercased() ?? "unknown" })
print("Found \(itemsByDomain.values.count) items across \(itemsByDomain.keys.count) domains.")

var domains = Array(itemsByDomain.keys)


for var domain in domains {
    let domainItems = itemsByDomain[domain]!.sorted(by: { $0.dateAdded < $1.dateAdded })
    
    var text = ""
    for var item in domainItems {
        text += item.dateAdded.description + "\n"
        
        if let title = item.title {
            text += title + "\n"
        }

        text += item.url.absoluteString + "\n"

        if let preview = item.previewText {
            text += preview + "\n"
        }
        
        text += "\n----\n\n"
    }
    
    try text.write(toFile: outputPath + "/" + domain + ".txt", atomically: true, encoding: .utf8)
}