forked from KolibriOS/kolibrios
47 lines
1017 B
C
47 lines
1017 B
C
|
#include <dirent.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
|
||
|
|
#define SIZE_MAX 256
|
||
|
|
|
||
|
|
int scandir(const char *path, struct dirent ***res,
|
||
|
|
int (*sel)(const struct dirent *),
|
||
|
|
int (*cmp)(const struct dirent **, const struct dirent **))
|
||
|
|
{
|
||
|
|
DIR *d = opendir(path);
|
||
|
|
struct dirent *de, **names=0, **tmp;
|
||
|
|
size_t cnt=0, len=0;
|
||
|
|
int old_errno = errno;
|
||
|
|
|
||
|
|
if (!d) return -1;
|
||
|
|
|
||
|
|
while ((errno=0), (de = readdir(d))) {
|
||
|
|
if (sel && !sel(de)) continue;
|
||
|
|
if (cnt >= len) {
|
||
|
|
len = 2*len+1;
|
||
|
|
if (len > SIZE_MAX/sizeof *names) break;
|
||
|
|
tmp = realloc(names, len * sizeof *names);
|
||
|
|
if (!tmp) break;
|
||
|
|
names = tmp;
|
||
|
|
}
|
||
|
|
names[cnt] = malloc(sizeof(struct dirent));
|
||
|
|
if (!names[cnt]) break;
|
||
|
|
memcpy(names[cnt++], de, sizeof(struct dirent));
|
||
|
|
}
|
||
|
|
|
||
|
|
closedir(d);
|
||
|
|
|
||
|
|
if (errno) {
|
||
|
|
if (names) while (cnt-->0) free(names[cnt]);
|
||
|
|
free(names);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
errno = old_errno;
|
||
|
|
|
||
|
|
if (cmp) qsort(names, cnt, sizeof *names, (int (*)(const void *, const void *))cmp);
|
||
|
|
*res = names;
|
||
|
|
return cnt;
|
||
|
|
}
|