Question

我正在使用cd切换到具有此程序的终端内部的目录。然后我运行make。我的make文件包括：

all: 
    gcc -Wall -Wpedantic -std=c99 *.c -o coolSort -pthread

然后我运行（小数据是包含文本文件的目录的相对路径）：

./ coolSort小数据

我正在尝试使用相对或绝对路径名打开目录。然后，我尝试打开并读取刚打开的目录中任意数量的文件。

我收到的错误是“没有这样的文件或目录”。我已经在很多地方得到了这个，最近在以下if语句中得到了

if((dirp = opendir(argv[1])) == NULL) {
if(lstat(dirstructp->d_name, &buf) == -1) {
if ((dirEntry = fopen(dirstructp->d_name, "r")) == NULL) {

这是完整的代码：

#define _GNU_SOURCE
#define MAXPATHLENGTH 1024
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <pthread.h>

typedef struct records {
    char* username;
    char* password;
    char* bloodType;
    char* domainName;
    char* dbIndex;
} records;

int main(int argc, char** argv) {
    if(argc != 2) {
        printf("You must provide 2 arguments: <./filename> <directory>\n");
        return -1;
    }

    char* path = malloc(MAXPATHLENGTH * sizeof(char));
    char* cwd = malloc(MAXPATHLENGTH * sizeof(char));
    FILE* sortedFile;
    FILE* dirEntry;
    DIR* dirp; //pointer to a directory stream  
    struct dirent* dirstructp; //pointer to a dirent structure 
    struct stat buf;

    //changes the current working directory of the calling process to the directory specified
    if((chdir(argv[1])) == -1) {
        fprintf(stderr, "%s\n", strerror(errno));
        exit(errno);
    }

    /*copies the pathname of the current working directory to the array pointed to by cwd,      which is of length MAXPATHLENGTH*/
    if((path = getcwd(cwd, MAXPATHLENGTH)) == NULL) {
        fprintf(stderr, "%s\n", strerror(errno));
        exit(errno);
    }

    //returns a pointer to the directory stream if successful 
    if((dirp = opendir(argv[1])) == NULL) {
        fprintf(stderr, "%s\n", strerror(errno));
        exit(errno);
    }

    /*On success, readdir() returns a pointer to a dirent structure (which may be statically    allocated, so don't attempt to free(3) it) representing the next directory entry in the directory stream pointed to by dirp*/
    while((dirstructp = readdir(dirp)) != NULL) {
        /*retrieves information about the file pointed to by dirstructp->d_name; if dirstructp- >d_name is a symbolic link, then it returns information about the link itself, not the file that it refers to.*/
        if(lstat(dirstructp->d_name, &buf) == -1) {
            fprintf(stderr, "%s\n", strerror(errno));
            exit(errno);
        }

        if(S_ISREG(buf.st_mode)) {
            if ((dirEntry = fopen(dirstructp->d_name, "r")) == NULL) {
                fprintf(stderr, "%s\n", strerror(errno));
                exit(errno);
            }   
        }

    }

    return 0;
}

如何读取和打开C目录中的所有文件？

0 个答案: