LinuxC实现文件夹及文件拷贝

来源：互联网发布：excel拆分合并软件编辑：程序博客网时间：2024/06/05 17:44
LinuxC实现文件夹及文件拷贝
#include<stdio.h>#include<stdlib.h>#include<string.h>#include<dirent.h>#include<sys/unistd.h>#include<sys/stat.h>#include<fcntl.h>//判断是否为目录int is_dir(char *path){    struct stat st;    stat(path,&st);    if(S_ISDIR(st.st_mode))        return 1;    else    return 0;}//处理字符串的函数int endwith(char *s,char c){//判断字符串结尾是否为"/"    if(s[strlen(s)-1]==c)        return 1;    else        return 0;}char* str_contact(char *str1,char *str2){    char* result;    result=(char*)malloc(strlen(str1)+strlen(str2)+1);    if(!result)    {        printf("字符串连接时，内存动态分配失败\n");        exit(1);    }    strcat(result,str1);    strcat(result,str2);    return result;}//复制文件函数void copy1(char* source_path,char* destination_path){    char buffer[1024];    int in,out,size;    int fd,fd1;    fd=open(source_path,O_RDWR);    if(fd==-1)    {        printf("打开文件失败\n");        exit(1);    }    out=read(fd,buffer,1024);    if(out==-1)    {        printf("读取失败\n");        exit(1);    }    close(fd);    size=strlen(buffer);    fd1=open(destination_path,O_WRONLY|O_CREAT,S_IRWXU|S_IRWXG);    if(fd1==-1)    {        printf("打开文件失败\n");        exit(1);    }    in=write(fd1,buffer,size);    if(in==-1)    {        printf("写入失败\n");        exit(1);    }}//复制文件夹函数void copy2(char* source_path,char* destination_path){    if(!opendir(destination_path))    {        //如果不存在就用mkdir函数来创建        if(mkdir(destination_path,0777))            printf("创建文件夹失败\n");    }    char *path;    path=(char*)malloc(512);    //相当于其他语言的String path="",在纯C环境下字符串必须自己管理大小    //这里path直接申请512的位置的空间,用于目录的拼接    path=str_contact(path,source_path);    struct dirent* filename;    DIR* sn=opendir(path);    while(filename=readdir(sn))    {        //遍历DIR指针指向的文件夹 ,也就是文件数组        memset(path,0,sizeof(path));        path=str_contact(path,source_path);        char* file_source_path;        file_source_path=(char*)malloc(512);        if(!endwith(source_path,'/'))        {            file_source_path=str_contact(file_source_path,source_path);            file_source_path=str_contact(source_path,"/");        }        else        {            file_source_path=str_contact(source_path,"/");        }        char* file_destination_path;        file_destination_path=(char*)malloc(512);        if(!endwith(destination_path,'/'))        {            file_destination_path=str_contact(file_destination_path,destination_path);            file_destination_path=str_contact(destination_path,"/");        }        else        {            file_destination_path=str_contact(file_destination_path,destination_path);        }    //取文件名与当前文件夹拼接成一个完整路径        file_source_path=str_contact(file_source_path,filename->d_name);        file_destination_path=str_contact(file_destination_path,filename->d_name);        if(is_dir(file_source_path))        {            if(!endwith(file_source_path,'.'))            {                copy2(file_source_path,file_destination_path);            }        }      //否则按照单一文件的方法进行复制            else            {                copy1(file_source_path,file_destination_path);                printf("复制%s到%s成功!\n",file_source_path,file_destination_path);            }    }}int main(int argc,char* argv[]){    if(argv[1]==NULL||argv[2]==NULL)    {        printf("请输入两个文件夹的路径，第一个为源文件的路径，第二个为目标文件夹的路径\n");        exit(1);    }    char* source_path=argv[1];    char* destination_path=argv[2];    DIR* source=opendir(source_path);    DIR* destination=opendir(destination_path);    if(!source||!destination)    {        printf("你输入的第一个参数或者第二个参数不是文件夹\n");    }    copy2(source_path,destination_path);    return 0;}
终端输入：
gcc -o fu fu.c
./fu /usr/local/A/AA/a.txt /usr/local/B
运行后会发现/usr/local/B下多了A下的AA目录及a.txt
注：此文章借鉴http://blog.csdn.net/yongh701/article/details/50403256
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