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如何在iOS上下载和解压缩文件(How to download & unzip files on iOS)

 我想为我的应用程序下载包含mp3的zip文件。 然后，我需要将其解压缩到一个永久目录中，该目录将包含要按需播放的mp3。 这是一个词汇应用程序，zip文件包含要提取的mp3。 zip文件大约5 MB。  
 更多问题：下载这些目录的好目录是什么？ 解压缩怎么办？ 此外，文件，或者更确切地说，它们所在的Web目录是受密码保护的，因此我需要提供名称和密码。  
 有人有任何一般指示吗？ 特别是，我想知道如何提供用户名/密码，下载的最佳目录，如何解压缩文件以及如何下载。 任何代码示例将不胜感激。 

I'd like to download a zip file containing mp3s for my app. Then, I will need to unzip it into a permanent directory, which will contain the mp3s to be played on demand. This is a vocabulary app and the zip file contains the mp3s to be extracted. The zip file as about 5 MB.  
More questions: What's a good directory to download these to? How to do unzipping? Also, the files, or rather, the web directory they are in, is password protected, so I will need to provide the name and password.  
Does anyone have any general pointers? In particular, I'd like to know how to provide the user name / password, the best directory to download to, how to unzip the file, and how to download. Any code samples would be greatly appreciated. 

原文：https://stackoverflow.com/questions/11605545

更新时间：2023-08-02 18:08

最满意答案

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *args[]){
    FILE *finp, *keyFile, *fout;
    int i, ch;
    char key[2];

    if(argc == 4 && strcmp(args[1], "e") == 0){
        //Read two key character
        if ((keyFile = fopen(args[3], "r")) == NULL){
            printf("Could Not Open file %s\n", args[3]);
            exit(1);
        }
        if(1!=fscanf(keyFile, " %c", &key[0]) || 1!=fscanf(keyFile, " %c", &key[1])){
            printf("Could Not Read Key properly.\n");
            exit(1);
        }
        fclose(keyFile);

        if((finp = fopen(args[2], "rb")) == NULL){
            printf("Could Not Open file %s\n", args[2]);
            exit(1);
        }
        if((fout = fopen("out.dat", "wb")) == NULL){
            printf("Could Not Open file out.dat\n");
            exit(1);
        }

        i = 1;
        while((ch = fgetc(finp))!=EOF){
            fputc(ch ^ key[i], fout);
            i = !i;
        }
        fclose(fout);
        fclose(finp);
    } else {
        printf("SORRY!\n");
    }

    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *args[]){
    FILE *finp, *keyFile, *fout;
    int i, ch;
    char key[2];

    if(argc == 4 && strcmp(args[1], "e") == 0){
        //Read two key character
        if ((keyFile = fopen(args[3], "r")) == NULL){
            printf("Could Not Open file %s\n", args[3]);
            exit(1);
        }
        if(1!=fscanf(keyFile, " %c", &key[0]) || 1!=fscanf(keyFile, " %c", &key[1])){
            printf("Could Not Read Key properly.\n");
            exit(1);
        }
        fclose(keyFile);

        if((finp = fopen(args[2], "rb")) == NULL){
            printf("Could Not Open file %s\n", args[2]);
            exit(1);
        }
        if((fout = fopen("out.dat", "wb")) == NULL){
            printf("Could Not Open file out.dat\n");
            exit(1);
        }

        i = 1;
        while((ch = fgetc(finp))!=EOF){
            fputc(ch ^ key[i], fout);
            i = !i;
        }
        fclose(fout);
        fclose(finp);
    } else {
        printf("SORRY!\n");
    }

    return 0;
}

如何在iOS上下载和解压缩文件(How to download & unzip files on iOS)

最满意答案

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