指定したディレクトリ内の全PDFファイルのページ数をカウントするSwiftスクリプト

pdfPageCount.swift

#!/usr/bin/swift

import Cocoa
import Quartz

var openPanel = NSOpenPanel()
openPanel.canChooseDirectories = true
openPanel.canChooseFiles = false
let returnCode = openPanel.runModal()

if returnCode == .OK {
    let directory = openPanel.urls.first!.path
    let contents = try! FileManager.default.contentsOfDirectory(atPath: directory)
    
    var sum = 0
    for fileName in contents {
        let fullPath = (directory as NSString).appendingPathComponent(fileName)
        if (fullPath as NSString).pathExtension.lowercased() == "pdf" {
            if let doc = PDFDocument(url: URL(fileURLWithPath:fullPath)) {
                let count = doc.pageCount
                print("\(fileName) : \(count) page" + (count>1 ? "s":""))
                sum += count
            }
        }
    }
    print("Total: \(sum) page" + (sum>1 ? "s":""))
}