#include "koh_stat.h"

#include <sys/stat.h>

#if defined(__APPLE__)
#define KOH_SEC_NS(tv) ((long long)(tv).tv_sec * 1000000000LL + (long long)(tv).tv_nsec)
#define KOH_MTIME_NS(st) KOH_SEC_NS((st).st_mtimespec)
#define KOH_CTIME_NS(st) KOH_SEC_NS((st).st_ctimespec)
#else
#define KOH_SEC_NS(tv) ((long long)(tv).tv_sec * 1000000000LL + (long long)(tv).tv_nsec)
#define KOH_MTIME_NS(st) KOH_SEC_NS((st).st_mtim)
#define KOH_CTIME_NS(st) KOH_SEC_NS((st).st_ctim)
#endif

int koh_lstat(const char *path, koh_stat *out) {
	struct stat st;
	if (lstat(path, &st) != 0) {
		out->kind = 0;
		return 0;
	}
	out->size = (long long)st.st_size;
	out->mtime_ns = KOH_MTIME_NS(st);
	out->ctime_ns = KOH_CTIME_NS(st);
	out->mode = (unsigned int)st.st_mode;
	switch (st.st_mode & S_IFMT) {
		case S_IFREG: out->kind = 1; break;
		case S_IFDIR: out->kind = 2; break;
		case S_IFLNK: out->kind = 3; break;
		default: out->kind = 4; break;
	}
	return 1;
}