Objective-C:Objective-C:文件中一些对目录进行操作的函数

IO文件中,一些对目录进行操作的函数:获取、切分、组合

一些对目录进行操作的函数：

获取用户的姓名：（NSString*)NSUserName() ;    ———>NSString *Str = NSUserName()

获取home目录路径：(NSString*)NSHomeDirectory()

获取临时文件夹路径：(NSString*)NSTemporaryDirectory()

 

一些对目录进行操作的方法：

将路径切成部分：- (NSArray *)pathComponents  ———>NSArray *paths = [path pathComponents]

将部分组合成路径：+ (NSString *)pathWithComponents:(NSArray *)components

判断是不是绝对路径：- (BOOL)isAbsolutePath

获取路径最后一部分：- (NSString *)lastPathComponent

删除最后一部分：- (NSString *)stringByDeletingLastPathComponent

获取扩展名：- (NSString *)pathExtension

删除扩展名：- (NSString *)stringByDeletingPathExtension

添加路径：- (NSString *)stringByAppendingPathComponent:(NSString *)str

添加扩展名：- (NSString *)stringByAppendingPathExtension:(NSString *)str

//1、获取home目录的路径

         NSString *homeDir = NSHomeDirectory();
         NSLog(@"home:%@",homeDir);

-- ::28.727 -path[:] home:/Users/mac

//2、获取临时文件夹的路径

         NSString *tempDir = NSTemporaryDirectory();
         NSLog(@"home:%@",tempDir);

-- ::28.728 -path[:] home:/var/folders/dx/481d4y4j4430hfty5zr_1gfh0000gn/T/

//3、将路径分成部分

         NSArray *paths = [tempDir pathComponents];
         NSLog(@"%@",paths);

-- ::28.728 -path[:] (
    "/",
    var,
    folders,
    dx,
    "481d4y4j4430hfty5zr_1gfh0000gn",
    T,
    "/"
)

//4、将部分再拼成路径

         NSString *path = [NSString pathWithComponents:paths];
         NSLog(@"%@",path);

-- ::28.729 -path[:] /var/folders/dx/481d4y4j4430hfty5zr_1gfh0000gn/T

//5、在路径上添加文件

         NSString *fileNamePath = [path stringByAppendingPathComponent:@"1.txt"];
         NSLog(@"fileName:%@",fileNamePath);

-- ::28.729 -path[:] fileName:/var/folders/dx/481d4y4j4430hfty5zr_1gfh0000gn/T/.txt

//6、获取路径的最后一部分

         NSString *fileName = [fileNamePath lastPathComponent];
         NSLog(@"fileName:%@",fileName);

-- ::28.729 -path[:] fileName:.txt

//7、获取文件的扩展名

         NSString *extension = [fileNamePath pathExtension];
         NSLog(@"extension:%@",extension);

-- ::28.729 -path[:] extension:txt
Program ended with exit code: