Add fill_pathname_parent_dir.

console/fileio/file_browser.c

@@ -95,7 +95,7 @@ static bool filebrowser_pop_directory (filebrowser_t * filebrowser)
    if (filebrowser->directory_stack_size > 0)
       pop_dir -= 1;
 
-   fill_pathname_basedir(previous_dir, filebrowser->directory_path, sizeof(previous_dir));
+   fill_pathname_parent_dir(previous_dir, filebrowser->directory_path, sizeof(previous_dir));
    strlcpy(directory_path_tmp, filebrowser->directory_path, sizeof(directory_path_tmp));
 
    //test first if previous directory can be accessed

file.h

@@ -75,6 +75,10 @@ const char *path_basename(const char *path);
 // Extracts base directory by mutating path. Keeps trailing '/'.
 void path_basedir(char *path);
 
+// Extracts parent directory by mutating path.
+// Assumes that path is a directory. Keeps trailing '/'.
+void path_parent_dir(char *path);
+
 bool path_is_absolute(const char *path);
 
 // Path-name operations.
@@ -108,6 +112,10 @@ void fill_pathname_base(char *out_path, const char *in_path, size_t size);
 // If in_path is a path without any slashes (relative current directory), out_path will get path "./".
 void fill_pathname_basedir(char *out_path, const char *in_path, size_t size);
 
+// Copies parent directory of in_dir into out_dir.
+// Assumes in_dir is a directory. Keeps trailing '/'.
+void fill_pathname_parent_dir(char *out_dir, const char *in_dir, size_t size);
+
 // Joins basedir of in_refpath together with in_path.
 // If in_path is an absolute path, out_path = in_path.
 // E.g.: in_refpath = "/foo/bar/baz.a", in_path = "foobar.cg", out_path = "/foo/bar/foobar.cg".

file_path.c

@@ -429,6 +429,12 @@ void fill_pathname_basedir(char *out_dir, const char *in_path, size_t size)
    path_basedir(out_dir);
 }
 
+void fill_pathname_parent_dir(char *out_dir, const char *in_dir, size_t size)
+{
+   rarch_assert(strlcpy(out_dir, in_dir, size) < size);
+   path_parent_dir(out_dir);
+}
+
 void path_basedir(char *path)
 {
    if (strlen(path) < 2)
@@ -450,6 +456,14 @@ void path_basedir(char *path)
    }
 }
 
+void path_parent_dir(char *path)
+{
+   size_t len = strlen(path);
+   if (len && ((path[len - 1] == '/') || (path[len - 1] == '\\')))
+      path[len - 1] = '\0';
+   path_basedir(path);
+}
+
 const char *path_basename(const char *path)
 {
    const char *last = strrchr(path, '/');