From: P. F. Chimento <philip.chimento@gmail.com>
Date: Mon, 22 Nov 2010 20:54:41 +0000 (+0100)
Subject: Fix crash when loading resource without a map
X-Git-Tag: v0.9~165
X-Git-Url: https://git.stderr.nl/gitweb?p=projects%2Fchimara%2Fchimara.git;a=commitdiff_plain;h=4884a6e823e53b0d0e61ae122cd1083ea10aebea

Fix crash when loading resource without a map

The Glk program now fails gracefully when trying to load an image
resource without having loaded a resource map first: it prints a warning
and doesn't load the image, instead of crashing.
---

diff --git a/libchimara/chimara-glk.c b/libchimara/chimara-glk.c
index eba6a23..6221175 100644
--- a/libchimara/chimara-glk.c
+++ b/libchimara/chimara-glk.c
@@ -178,6 +178,7 @@ chimara_glk_init(ChimaraGlk *self)
 	priv->char_input_queue = g_async_queue_new();
 	priv->line_input_queue = g_async_queue_new();
 	/* Should be g_async_queue_new_full(g_free); but only in GTK >= 2.16 */
+	priv->resource_map = NULL;
 	priv->resource_lock = g_mutex_new();
 	priv->resource_loaded = g_cond_new();
 	priv->resource_info_available = g_cond_new();
diff --git a/libchimara/graphics.c b/libchimara/graphics.c
index c87a148..7f59915 100644
--- a/libchimara/graphics.c
+++ b/libchimara/graphics.c
@@ -22,6 +22,10 @@ load_image_in_cache(glui32 image, gint width, gint height)
 	guchar *buffer;
 
 	/* Lookup the proper resource */
+	if(!glk_data->resource_map) {
+		WARNING("No resource map has been loaded yet.");
+		return NULL;
+	}
 	blorb_error = giblorb_load_resource(glk_data->resource_map, giblorb_method_FilePos, &resource, giblorb_ID_Pict, image);
 	if(blorb_error != giblorb_err_None) {
 		WARNING_S( "Error loading resource", giblorb_get_error_message(blorb_error) );