| 0,0 → 1,46 |
|---|
| #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; |
| } |