Linux递归访问文件目录

void printDIR(const char* path);
void printDIRRecursive(const char* path);

void printDIR(const char* path){

DIR* pDir = opendir(path);
if(pDir == nullptr){
    perror("opendir failed!");
    return ;
}

struct dirent* pDirent = nullptr;
while((pDirent = readdir(pDir)) != nullptr){
    if(strcmp(pDirent->d_name,".") == 0 || strcmp(pDirent->d_name,"..") == 0)
        continue;
    std::cout << "["<< std::setw(STRING_LEN) << pDirent->d_name << "] \t----->";
    switch(pDirent->d_type){
        case DT_BLK:
            std::cout << "块设备文件" << std::endl;
            break;
        case DT_CHR:
            std::cout << "字符设备文件" << std::endl;
            break;
        case DT_DIR:
            std::cout << "目录文件" << std::endl;
            break;
        case DT_FIFO:
            std::cout << "管道文件" << std::endl;
            break;
        case DT_LNK:
            std::cout << "链接文件" << std::endl;
            break;
        case DT_REG:
            std::cout << "普通文件" << std::endl;
            break;
        case DT_SOCK:
            std::cout << "socket文件" << std::endl;
            break;
        case DT_UNKNOWN:
            std::cout << "未知文件类型" << std::endl;
            break;
    }
}

closedir(pDir);

}

void printDIRRecursive(const char* path){
const std::string _path(path);
static int depth = 0;

DIR* pDir = opendir(_path.c_str());
if(pDir == nullptr){
    perror("opendir failed!");
    return ;
}

struct dirent* pDirent = nullptr;
while((pDirent = readdir(pDir)) != nullptr){
    std::string name;
    for(int i = 0;i < depth;i++)
        name += "\t";
    
    name += ("[");
    name += pDirent->d_name;
    name += "]";
    
    if(strcmp(pDirent->d_name,".") == 0 || strcmp(pDirent->d_name,"..") == 0)
        continue;
    
    switch(pDirent->d_type){
        case DT_BLK:
            std::cout << name << ":块设备文件" << std::endl;
            break;
        case DT_CHR:
            std::cout << name << ":字符设备文件" << std::endl;
            break;
        case DT_DIR:
            std::cout << name << ":目录文件" << std::endl;
            name = _path;
            name += "/";
            name += pDirent->d_name;
            depth++;
            printDIRRecursive(name.c_str());
            break;
        case DT_FIFO:
            std::cout << name << ":管道文件" << std::endl;
            break;
        case DT_LNK:
            std::cout << name << ":链接文件" << std::endl;
            break;
        case DT_REG:
            std::cout << name << ":普通文件" << std::endl;
            break;
        case DT_SOCK:
            std::cout << name << ":socket文件" << std::endl;
            break;
        case DT_UNKNOWN:
            std::cout << name << ":未知文件类型" << std::endl;
            break;
    }
}

closedir(pDir);
depth--;

}

void printDIRRecursive(const char* path,std::vectorstd::string& path_vec){
const std::string _path(path);
static int depth = 0;

DIR* pDir = opendir(_path.c_str());
if(pDir == nullptr){
    perror("opendir failed!");
    return ;
}

struct dirent* pDirent = nullptr;
while((pDirent = readdir(pDir)) != nullptr){
    std::string name;
    for(int i = 0;i < depth;i++)
        name += "\t";
    
    name += ("[");
    name += pDirent->d_name;
    name += "]";
    
    if(strcmp(pDirent->d_name,".") == 0 || strcmp(pDirent->d_name,"..") == 0)
        continue;
    
    switch(pDirent->d_type){
        case DT_BLK:
            name += ":块设备文件";
            path_vec.push_back(name);
            break;
        case DT_CHR:
            name += ":字符设备文件";
            path_vec.push_back(name);
            break;
        case DT_DIR:
            name += ":目录文件";
            path_vec.push_back(name);
            name = _path;
            name += "/";
            name += pDirent->d_name;
            depth++;
            printDIRRecursive(name.c_str(),path_vec);
            break;
        case DT_FIFO:
            name += ":管道文件";
            path_vec.push_back(name);
            break;
        case DT_LNK:
            name += ":链接文件";
            path_vec.push_back(name);
            break;
        case DT_REG:
            name += ":普通文件";
            path_vec.push_back(name);
            break;
        case DT_SOCK:
            name += ":socket文件";
            path_vec.push_back(name);
            break;
        case DT_UNKNOWN:
            name += ":未知文件类型";
            path_vec.push_back(name);
            break;
    }
}

closedir(pDir);
depth--;

}

int main(int argc,char* argv[]){
for(int i = 0;i < argc;i++)
std::cout << i <<": " << argv[i] << std::endl;

printDIR(argv[1]);
std::cout << std::endl;
printDIRRecursive(argv[1]);
std::vector<std::string> path;
printDIRRecursive(argv[1],path);
std::ofstream out("dir_path.txt");
for(std::string path_name: path)
    out << path_name << std::endl;
return 0;

}

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