Refactor: move processing functions to own header

src/common/processing.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#ifndef FF_INCLUDED_common_processing
+#define FF_INCLUDED_common_processing
+
+#include "util/FFstrbuf.h"
+
+void ffProcessAppendStdOut(FFstrbuf* buffer, char* const argv[]);
+
+#endif

src/common/settings.h

@@ -23,6 +23,8 @@ typedef union FFvariant
     };
 } FFvariant;
 
+#define FF_VARIANT_NULL ((FFvariant){.strValue = NULL})
+
 FFvariant ffSettingsGetDConf(FFinstance* instance, const char* key, FFvarianttype type);
 FFvariant ffSettingsGetGSettings(FFinstance* instance, const char* schemaName, const char* path, const char* key, FFvarianttype type);
 FFvariant ffSettingsGet(FFinstance* instance, const char* dconfKey, const char* gsettingsSchemaName, const char* gsettingsPath, const char* gsettingsKey, FFvarianttype type);