在文件夹C语言中筛选文件名的scandir(Filtering scandir for filenames in folder C Language)

在文件夹C语言中筛选文件名的scandir(Filtering scandir for filenames in folder C Language)

我在C中使用scandir（）函数，在我需要获取文件名正好是“exe”的文件的文件夹中。

我如何筛选scandir返回的条目？

scandir的第三个参数是filter：

int scandir(const char *dirp, struct dirent ***namelist, int (*filter)(const struct dirent *), int (*compar)(const struct dirent **, const struct dirent **));

它对我的目的有用吗？

I am using scandir() function in C, on a folder where i need to get files whose filenames are exactly = "exe".

How can i filter the entries returned by scandir?

Third argument of scandir is filter:

int scandir(const char *dirp, struct dirent ***namelist, int (*filter)(const struct dirent *), int (*compar)(const struct dirent **, const struct dirent **));

could it be useful for my purpose?

最满意答案

是的，过滤器参数是一个函数指针，可以让你传入一个函数来过滤结果。 您可能希望编写一个如下所示的函数，并按名称将其作为过滤器的值传递。

int file_select(const struct dirent *entry) { return strcmp(entry->d_name, "exe"); }

Yes, the filter argument is a function pointer that lets you pass in a function to filter the results. You might want to write a function like the one below and pass it by name as the value for filter.

int file_select(const struct dirent *entry) { return strcmp(entry->d_name, "exe"); }