From 1a48ca666ffbdbbdf2b7d36f7cab0228b098da0f Mon Sep 17 00:00:00 2001
From: Charlie Birks <charlie@daft.games>
Date: Thu, 4 Feb 2021 16:20:54 +0000
Subject: [PATCH] emscripten: Create directory recursively in GetPrefPath

---
 src/filesystem/emscripten/SDL_sysfilesystem.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/filesystem/emscripten/SDL_sysfilesystem.c b/src/filesystem/emscripten/SDL_sysfilesystem.c
index dadfe947b..d2be76554 100644
--- a/src/filesystem/emscripten/SDL_sysfilesystem.c
+++ b/src/filesystem/emscripten/SDL_sysfilesystem.c
@@ -44,6 +44,7 @@ SDL_GetPrefPath(const char *org, const char *app)
 {
     const char *append = "/libsdl/";
     char *retval;
+    char *ptr = NULL;
     size_t len = 0;
 
     if (!app) {
@@ -67,7 +68,17 @@ SDL_GetPrefPath(const char *org, const char *app)
         SDL_snprintf(retval, len, "%s%s/", append, app);
     }
 
+    for (ptr = retval+1; *ptr; ptr++) {
+        if (*ptr == '/') {
+            *ptr = '\0';
+            if (mkdir(retval, 0700) != 0 && errno != EEXIST)
+                goto error;
+            *ptr = '/';
+        }
+    }
+
     if (mkdir(retval, 0700) != 0 && errno != EEXIST) {
+error:
         SDL_SetError("Couldn't create directory '%s': '%s'", retval, strerror(errno));
         SDL_free(retval);
         return NULL;