注意
在macOS1上使用该功能需要删除App SandBox功能.
class File {
var filename: String
var fileExtension: String
init(fileName: String, fileExtension: String) {
self.filename = fileName
self.fileExtension = fileExtension
}
func getFileURLString() -> String? {
if let path = Bundle.main.path(forResource: filename, ofType: fileExtension) {
print(path)
return path
}
return nil
}
func copyFile(to dest: String, with fileName: String, with fileExtension: String) -> Bool {
if let filePath = getFileURLString() {
if FileManager().secureCopyItem(at: filePath, to: dest, with: fileName, with: fileExtension) {
return true
}
}
return false
}
}
File类接受两个参数用于初始化该类: 文件名filename与文件扩展名fileExtension。类方法getFileURLString()返回需要复制的文件的原始路径，为可选值，如果该文件不存在则返回nil。类方法copyFile(to dest: String, with fileName: String, with fileExtension: String)接受三个参数，想要拷贝的路径dest，路径为完整路径，类似/Users/joker/Desktop/，文件名fileName与文件扩展名fileExtension。类方法copyFile(to dest: String, with fileName: String, with fileExtension: String)返回一个Bool结果，如果文件复制成功返回true，否则返回false。
扩展类secureCopyItem(at srcPath: String, to dstPath: String, with fileName: String, with fileExtension: String) -> Bool为FileManager的类扩展，其接受四个参数: 原始文件所在位置srcPath, 例如: /Users/joker/Desktop/file.txt, 拷贝路径dstPath，例如：/Users/joker/Desktop/，文件名fileName与文件扩展名fileExtension。该类方法返回一个Bool结果，如果文件复制成功返回true，否则返回false。
扩展类NewTargetFileURL(filePath: String, fileName:String, fileExtension: String) -> URL?生成一个目标文件路径，例如: /Users/joker/Documents/file.txt，若该文件路径下已存在，则给文件自动创建其他命名，如/Users/joker/Documents/file 1.txt。该类方法源代码如下:
open func NewTargetFileURL(filePath: String, fileName:String, fileExtension: String) -> URL? {
let fileManager = FileManager.default
do {
let contentsOfDirectory = try fileManager.contentsOfDirectory(
at: URL(fileURLWithPath: filePath),
includingPropertiesForKeys: nil,
options: .skipsHiddenFiles
)
let newFileName = NewFileNameGenerator(
fileBaseName: fileName,
fileExtension: fileExtension
).makeNewFileName(for: contentsOfDirectory)
let newFileURL = URL(fileURLWithPath: filePath)
.appendingPathComponent(newFileName)
.appendingPathExtension(fileExtension)
return newFileURL
} catch {
print(error)
return nil
}
}
NewFileNameGenerator是一个用于生成文件名称的类，其定义如下:
public struct NewFileNameGenerator {
private let fileBaseName: String
private let fileExtension: String
public init(fileBaseName: String, fileExtension: String) {
self.fileBaseName = fileBaseName
self.fileExtension = fileExtension
}
public func makeNewFileName(for contentsOfDirectory: [URL]) -> String {
let existingFileURLs = contentsOfDirectory.filter({
$0.lastPathComponent.hasPrefix(fileBaseName) && $0.pathExtension == fileExtension
})
let existingFileNames = existingFileURLs.map({ $0.deletingPathExtension().lastPathComponent })
var iteration = 0
var newFileName = fileBaseName
while existingFileNames.contains(newFileName) {
iteration += 1
newFileName = "\(fileBaseName) \(iteration)"
}
return newFileName
}
}
NewFileNameGenerator类接受两个参数用于初始化该类: 文件名filename与文件扩展名fileExtension。类方法makeNewFileName(for contentsOfDirectory: [URL]) -> String返回目标文件的文件名，如果该路径下文件存在，则命名将会自动添加后缀，如file 1:
