RDFileUtil.swift

//
//  RDFileUtil.swift
//  RDFileUtil
//
//  Created by KatagiriSo on 2017/11/09.
//  Copyright © 2017年 rodhosSoft. All rights reserved.
//

import Foundation

struct RDFileUtil {
    
    static func showCurentList() {
        let fm = FileManager()
        let path = fm.currentDirectoryPath
        let contents = try! fm.contentsOfDirectory(atPath: path)
        print(contents.description)
    }
    
    static func getCurrentList() -> [String] {
        let fm = FileManager()
        let path = fm.currentDirectoryPath
        let contents = try! fm.contentsOfDirectory(atPath: path)
        return contents
    }
    
    
    static func getCurrentFilePathList() -> [String] {
        let fm = FileManager()
        let path = fm.currentDirectoryPath
        let contents = try! fm.contentsOfDirectory(atPath: path)
        let contentPaths = contents.map { path + "/" + $0}
        
        let files = contentPaths.filter {
            var isDir : ObjCBool = false
            fm.fileExists(atPath: $0, isDirectory: &isDir)
            if isDir.boolValue {
                return false
            } else {
                return true
            }
        }
        
        return files
    }
    
    static func showCurrentPath() {
        let path = FileManager().currentDirectoryPath
        print(path)
    }
    
    static func createFile(name:String) {
        let fm = FileManager()
        let path = FileManager().currentDirectoryPath
        fm.createFile(atPath: path + "/" + name, contents: nil, attributes: nil)
    }
    
    static func writeFile(fileName:String, content:String) {
        print(#function + " " + fileName)
        let fm = FileManager()
        let path = fm.currentDirectoryPath
        try! content.write(toFile: path + "/" + fileName, atomically: true, encoding: .utf8)
        
    }
    
    static func getFileNames() -> [String] {
        return getCurrentFilePathList().map {
            URL(string:$0)!.lastPathComponent.components(separatedBy: ".").first!}.filter { !$0.isEmpty }
    }
    
    static func changeSwift() -> [String] {
        return getFileNames().map { $0 + ".swift"}
    }
    
    static func readFile(fileName:String) -> String {
        let fm = FileManager()
        let path = fm.currentDirectoryPath
        let text = try! String( contentsOfFile: path + "/" + fileName, encoding: .utf8 )
        return text
    }
    
    static func appendText(fileName: String, string: String) {
        let fm = FileManager()
        let path = fm.currentDirectoryPath
        let url = URL(fileURLWithPath: path + "/" + fileName)
        
        do {
            let fileHandle = try FileHandle(forWritingTo: url)
            let text = "\n" + string
            fileHandle.seekToEndOfFile()
            fileHandle.write(text.data(using: String.Encoding.utf8)!)
        } catch let error as NSError {
            print("appendText failed: \(error)")
        }
    }
    
    static func createSwiftFiles() {
        changeSwift().forEach {
            print("createFile " + $0)
            createFile(name: $0)
            writeFile(fileName: $0, content: "hello")
            appendText(fileName: $0, string: "add")
        }
    }
}