获取没有完整路径的目录名称（C unix）

Question

DIR *dir;
struct dirent *entry;
if ((dir = opendir (argv[1])) != NULL) {
  while ((entry = readdir (dir)) != NULL) {
    if(strcmp(entry->d_name,argv[2])==0)   
        printf ("%s\n", entry->d_name);
}
//recursive call, can post if needed

我正在尝试编写一个程序来查找所有具有特定名称的 files/folders，但是使用我当前的代码我得到了完整的文件路径，所以我不能真正使用 strcmp 来查找我的路径。假设 argv[2]=="Programs" 那么如果路径是 "c://Programs" 它将找不到它。在 C 中有什么方法可以只获取目录的名称？

Answer 1

Is there any way in C to just get the name of the directory?

在 Linux 我使用这样的东西：

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<linux/limits.h>
#include<string.h>

void *getCurrentDir(void){
    char *currWorkDir, *token;
    char buffer[PATH_MAX + 1];
    char *directory;
    size_t length;

    currWorkDir = getcwd(buffer, PATH_MAX + 1 );
    token = strrchr(currWorkDir, '/');

    if( currWorkDir == NULL ){
        printf("Error"); /* You decide here */
        exit(1);
    }

    if (token == NULL) {
        printf("Error"); /* You decide here */
        exit(1);
    }

    length = strlen(token);
    directory = malloc(length);
    memcpy(directory, token+1, length);

    return directory;
}

int main( void ){
    char *dir = getCurrentDir();
    printf("The current Working Directory is: %s\n", dir);

    free(dir);
    return 0;
}

输出：

michi@michi-laptop:~$ pwd
/home/michi

michi@michi-laptop:~$ ./program
The current Working Directory is: michi

或者像这样：

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<linux/limits.h>
#include<string.h>

void *getCurrentDir(char *path){
    char *token;
    char *directory;
    size_t length;

    token = strrchr(path, '/');

    if (token == NULL) {
        printf("Error"); /* You decide here */
        exit(1);
    }

    length = strlen(token);
    directory = malloc(length);
    memcpy(directory, token+1, length);

    return directory;
}

int main( void ){
    char *path = "/home/michi";
    char *dir = getCurrentDir(path);
    printf("The current Working Directory is: %s\n", dir);

    free(dir);
    return 0;
}

获取没有完整路径的目录名称（C unix）

Get directory name without full path (C unix)

c

file

unix

dir