add FDIR_FOREACH (macro for iterating through directory entries)

diff --git a/fs.c b/fs.c
index 3e31169..3ecdc69 100644 (file)
--- a/fs.c
+++ b/fs.c
@@ -29,3 +29,16 @@ PUBLIC_FN int dir_foreach(char *path, dir_iterator *iter, void *data) {
   errno = errno_;
   return feach_res;
 }
+
+HEADER // requires stdio.h
+HEADER #define FDIR_FOREACH(dir, element_name, code) {                                                     \
+HEADER   struct dirent element_name;                                                                       \
+HEADER   struct dirent *__jh_fdir_foreach_res;                                                             \
+HEADER   while (1) {                                                                                       \
+HEADER     int __jh_fdir_foreach_rd_res = readdir_r(dir, &element_name, &__jh_fdir_foreach_res);           \
+HEADER     if(__jh_fdir_foreach_rd_res) {*(char*)0 = 0; /*crash, boom – EBADF happened (probably)*/}       \
+HEADER     if (__jh_fdir_foreach_res == NULL) goto end;                                                    \
+HEADER     {code}                                                                                          \
+HEADER   }                                                                                                 \
+HEADER   end:;                                                                                             \
+HEADER }
\ No newline at end of file