fix zsv_mkdirs not working for network drive paths with leading // or…

… \\ (#148)

app/utils/dirs.c

@@ -100,9 +100,20 @@ int zsv_mkdirs(const char *path, char path_is_filename) {
 #ifdef WIN32
  if(len > 1) {
  // starts with two slashes
- if(strchr("/\\", tmp[0]) && strchr("/\\", tmp[1]))
+ if(strchr("/\\", tmp[0]) && strchr("/\\", tmp[1])) {
  offset = 2;
-
+ // find the next slash
+ char *path_end = tmp + 3;
+ while(*path_end && !strchr("/\\", *path_end))
+ path_end++;
+ if(*path_end) path_end++;
+ if(*path_end)
+ offset = path_end - tmp;
+ else {
+ fprintf(stderr, "Invalid path: %s\n", path);
+ return -1;
+ }
+ }
  // starts with *:
  else if(tmp[1] == ':')
  offset = 2;
@@ -116,13 +127,16 @@ int zsv_mkdirs(const char *path, char path_is_filename) {
  char tmp_c = p[1];
  p[0] = FILESLASH;
  p[1] = '\0';
- if(*tmp && !zsv_dir_exists(tmp) && mkdir(tmp
+ if(*tmp && !zsv_dir_exists(tmp)
+ && mkdir(tmp
 #ifndef WIN32
- , S_IRWXU
+  , S_IRWXU
 #endif
- ))
+  )) {
  rc = -1;
- else
+ fprintf(stderr, "Error creating directory: ");
+ perror(tmp);
+ } else
  p[1] = tmp_c;
  }