Convert all MIME types to glib "content" types

On Linux they are the same, but somewhere else they might be different.

zathura/content-type.c

@@ -99,8 +99,14 @@ guess_type_magic(zathura_content_type_context_t* context, const char* path)
   }
   girara_debug("magic detected filetype: %s", mime_type);
 
-  /* dup so we own the memory */
-  return g_strdup(mime_type);;
+  char* content_type = g_content_type_from_mime_type(mime_type);
+  if (content_type == NULL) {
+    girara_warning("failed to convert mime type to content type: %s", mime_type);
+    /* dup so we own the memory */
+    return g_strdup(mime_type);
+  }
+
+  return content_type;
 }
 
 static char*
@@ -143,7 +149,16 @@ guess_type_file(const char* path)
   }
 
   g_strdelimit(out, "\n\r", '\0');
-  return out;
+  girara_debug("file detected filetype: %s", out);
+
+  char* content_type = g_content_type_from_mime_type(out);
+  if (content_type == NULL) {
+    girara_warning("failed to convert mime type to content type: %s", out);
+    return out;
+  }
+
+  g_free(out);
+  return content_type;
 }
 #endif
 

zathura/content-type.h

@@ -6,14 +6,14 @@
 #include "types.h"
 
 /**
- * Create new context for MIME type detection.
+ * Create new context for content type detection.
  *
  * @return new context
  */
 zathura_content_type_context_t* zathura_content_type_new(void);
 
 /**
- * Free MIME type detection context.
+ * Free content type detection context.
  *
  * @param context The context.
  */

zathura/plugin.c

@@ -39,7 +39,7 @@ struct zathura_plugin_manager_s {
   girara_list_t* type_plugin_mapping; /**< List of type -> plugin mappings */
 };
 
-static void zathura_plugin_add_mimetype(zathura_plugin_t* plugin, const char* mime_type);
+static void plugin_add_mimetype(zathura_plugin_t* plugin, const char* mime_type);
 static bool register_plugin(zathura_plugin_manager_t* plugin_manager, zathura_plugin_t* plugin);
 static bool plugin_mapping_new(zathura_plugin_manager_t* plugin_manager, const gchar* type, zathura_plugin_t* plugin);
 static void zathura_plugin_free(zathura_plugin_t* plugin);
@@ -159,7 +159,7 @@ load_plugin(zathura_plugin_manager_t* plugin_manager, const char* plugindir, con
 
   // register mime types
   for (size_t s = 0; s != plugin_definition->mime_types_size; ++s) {
-    zathura_plugin_add_mimetype(plugin, plugin_definition->mime_types[s]);
+    plugin_add_mimetype(plugin, plugin_definition->mime_types[s]);
   }
 
   bool ret = register_plugin(plugin_manager, plugin);
@@ -328,13 +328,18 @@ zathura_plugin_free(zathura_plugin_t* plugin)
 }
 
 static void
-zathura_plugin_add_mimetype(zathura_plugin_t* plugin, const char* mime_type)
+plugin_add_mimetype(zathura_plugin_t* plugin, const char* mime_type)
 {
   if (plugin == NULL || mime_type == NULL) {
     return;
   }
 
-  girara_list_append(plugin->content_types, g_content_type_from_mime_type(mime_type));
+  char* content_type = g_content_type_from_mime_type(mime_type);
+  if (content_type == NULL) {
+    girara_warning("plugin: unable to convert mime type: %s", mime_type);
+  } else {
+    girara_list_append(plugin->content_types, content_type);
+  }
 }
 
 zathura_plugin_functions_t*