Object-C,文件路径API

犀利吐槽

1.同样都是“文件和目录操作",java中，就用java.util.File一个类，就封装了很多API，而Object-C搞了这么多类和函数。具体原因，有待分析啊。

2.明明是NSString，字符串操作，怎么出现了”pathComponents“等操作文件路径相关的方法，很奇怪的赶脚。

3.stringByAppendingString，这函数的名字有点长啊。

4.总体感觉，Object-C的语法比Java复杂一些，码代码的效率低了不少。

/

/

//  main.m

//  FilePathUtil

//

//  Created by fansunion on 15/11/29.

//  Copyright (c) 2015年 demo. All rights reserved.

//

#import <Foundation/Foundation.h>

//演示文件路径API

int main(int argc, const char * argv[]) {

    @autoreleasepool {

       NSString *fileName =@"path.m";

        NSFileManager *fm;

        NSString *path,*tempDir,*extention,*homeDir,*fullPath;

        NSArray *components;

        fm =[NSFileManager defaultManager];

        //临时目录

        tempDir = NSTemporaryDirectory();

        NSLog(@"The tempDir is %@",tempDir);

        //提取基本目录

        path =[fm currentDirectoryPath];

        NSLog(@"The base dir is %@",[path lastPathComponent]);

        //fileName在当前目录中的完整路径

        //这个地方有个问题

        //本地输出”/Users/fansunion/Library/Developer/Xcode/DerivedData/FilePathUtil-bvzjqehotbexooebruphtwcmqekz/Build/Products/Debugpath.m“

        //Debug和path.m之间没有”分隔符“/"，而书本中的例子是有的

        //最好还是手动加上，Java中也是没有这个分隔符，需要手动加上的

        fullPath =[path stringByAppendingString:fileName];

        NSLog(@"The fullPath is %@",fullPath);

        //获得文件扩展名

        extention = [fullPath pathExtension];

        NSLog(@"The extentions is %@",extention);

        //获得用户的主目录

        homeDir = NSHomeDirectory();

        NSLog(@"The home directory is %@",homeDir);

        //拆分路径为各个组成部分

        components = [homeDir pathComponents];

        for(path in components){

            NSLog(@"%@",path);

        }

    }

    return 0;

}

程序输出

2015-11-29 13:43:30.550 FilePathUtil[2861:179163] The tempDir is /var/folders/4q/5ylpds9n5n97bq_r41qvly4w0000gn/T/

2015-11-29 13:43:30.551 FilePathUtil[2861:179163] The base dir is Debug

2015-11-29 13:43:30.551 FilePathUtil[2861:179163] The fullPath is /Users/fansunion/Library/Developer/Xcode/DerivedData/FilePathUtil-bvzjqehotbexooebruphtwcmqekz/Build/Products/Debugpath.m

2015-11-29 13:43:30.551 FilePathUtil[2861:179163] The extentions is m

2015-11-29 13:43:30.552 FilePathUtil[2861:179163] The home directory is /Users/fansunion

2015-11-29 13:43:30.552 FilePathUtil[2861:179163] /

2015-11-29 13:43:30.552 FilePathUtil[2861:179163] Users

2015-11-29 13:43:30.553 FilePathUtil[2861:179163] fansunion

Program ended with exit code: 0