linux c 拷贝目录

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>

void copy_file(const char *src, const char *dest) {
    // 打开源文件和目标文件
    FILE *in = fopen(src, "rb");
    FILE *out = fopen(dest, "wb");
    if (!in || !out) {
        perror("Error opening files");
        exit(EXIT_FAILURE);
    }

    // 缓冲区
    char buffer[BUFSIZ];
    size_t n;

    // 复制文件内容
    while ((n = fread(buffer, 1, sizeof(buffer), in)) > 0) {
        fwrite(buffer, 1, n, out);
    }

    // 关闭文件
    fclose(in);
    fclose(out);
}

void copy_directory(const char *src, const char *dest) {
    DIR *dir = opendir(src);
    struct dirent *entry;
    struct stat st;

    if (!dir) {
        perror("Error opening directory");
        exit(EXIT_FAILURE);
    }

    // 创建目标目录
    mkdir(dest, 0755);

    while ((entry = readdir(dir)) != NULL) {
        char src_path[PATH_MAX], dest_path[PATH_MAX];
        if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
            continue;

        snprintf(src_path, sizeof(src_path), "%s/%s", src, entry->d_name);
        snprintf(dest_path, sizeof(dest_path), "%s/%s", dest, entry->d_name);

        if (stat(src_path, &st) == -1) {
            perror("Error getting file status");
            continue;
        }

        if (S_ISDIR(st.st_mode)) {
            // 递归复制子目录
            copy_directory(src_path, dest_path);
        } else {
            // 复制文件
            copy_file(src_path, dest_path);
        }
    }

    closedir(dir);
}

int main(int argc, char *argv[]) {
    if (argc != 3) {
        fprintf(stderr, "Usage: %s <source_directory> <destination_directory>
", argv[0]);
        return EXIT_FAILURE;
    }

    copy_directory(argv[1], argv[2]);

    return EXIT_SUCCESS;
}