Add support for ephemeral (zero disk access)

config.def.h

@@ -29,6 +29,7 @@ static Parameter defconfig[ParameterLast] = {
 	[DefaultCharset]      =       { { .v = "UTF-8" }, },
 	[DiskCache]           =       { { .i = 1 },     },
 	[DNSPrefetch]         =       { { .i = 0 },     },
+	[Ephemeral]           =       { { .i = 0 },     },
 	[FileURLsCrossAccess] =       { { .i = 0 },     },
 	[FontSize]            =       { { .i = 12 },    },
 	[FrameFlattening]     =       { { .i = 0 },     },

surf.c

@@ -58,6 +58,7 @@ typedef enum {
 	DiskCache,
 	DefaultCharset,
 	DNSPrefetch,
+	Ephemeral,
 	FileURLsCrossAccess,
 	FontSize,
 	FrameFlattening,
@@ -350,8 +351,11 @@ setup(void)
 	/* dirs and files */
 	cookiefile = buildfile(cookiefile);
 	scriptfile = buildfile(scriptfile);
-	cachedir   = buildpath(cachedir);
 	certdir    = buildpath(certdir);
+	if (curconfig[Ephemeral].val.i)
+		cachedir = NULL;
+	else
+		cachedir   = buildpath(cachedir);
 
 	gdkkb = gdk_seat_get_keyboard(gdk_display_get_default_seat(gdpy));
 
@@ -1141,11 +1145,16 @@ newview(Client *c, WebKitWebView *rv)
 
 		contentmanager = webkit_user_content_manager_new();
 
+		if (curconfig[Ephemeral].val.i) {
+			context = webkit_web_context_new_ephemeral();
+		} else {
 			context = webkit_web_context_new_with_website_data_manager(
 			          webkit_website_data_manager_new(
 			          "base-cache-directory", cachedir,
 			          "base-data-directory", cachedir,
 			          NULL));
+		}
+
 
 		cookiemanager = webkit_web_context_get_cookie_manager(context);
 
@@ -1167,6 +1176,7 @@ newview(Client *c, WebKitWebView *rv)
 			    context, *plugindirs);
 
 		/* Currently only works with text file to be compatible with curl */
+		if (!curconfig[Ephemeral].val.i)
 			webkit_cookie_manager_set_persistent_storage(cookiemanager,
 			    cookiefile, WEBKIT_COOKIE_PERSISTENT_STORAGE_TEXT);
 		/* cookie policy */