文件路径工具类

• FilePathTool.swift 文件：

/*
 文件路径工具类
 */

import UIKit

class FilePathTool: NSObject {

    // MARK: - 单例
    static let share:FilePathTool = {
        let instance = FilePathTool()
        return instance
    }()
    
    private override init() {
    }
    
    
    // MARK: - 系统文件路径
    let documentPath:String = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)[0]
    let libraryPath:String = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.libraryDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)[0]
    let cachePath:String = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.cachesDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)[0]
    let tempPath = NSTemporaryDirectory()
    
    
    // MARK: - 自定义文件路径
    lazy var loginResultPath: String = {//登录结果数据库路径
        let path = self.documentPath + "/loginResultDB.realm"
        return path
    }()

}


// MARK: - 文件路径创建相关
extension FilePathTool {
    
    func createPath(path: String) {//创建路径（如果存在不创建，如果不存在则创建）
        if FileManager.default.fileExists(atPath: path) {
            return
        }
        try! FileManager.default.createDirectory(atPath: path, withIntermediateDirectories: true, attributes: nil)
    }
    
    func fileExists(path: String?) -> Bool {//判断路径是否存在
        if let filePath = path {
            return  FileManager.default.fileExists(atPath: filePath)
        }
        return false
    }
    
}