1 files changed, 103 insertions, 0 deletions
diff --git a/src/dom/debug.c b/src/dom/debug.c
new file mode 100644
index 0000000..468c2f7
--- /dev/null
+++ b/src/dom/debug.c
@@ -0,0 +1,103 @@
+/*
+ * This file is part of LibNSLayout
+ * Licensed under the ISC License, http://opensource.org/licenses/ISC
+ * Copyright 2015-2017 Michael Drake <tlsa@netsurf-browser.org>
+ */
+
+/** \file src/dom/debug.c
+ * DOM debug
+ */
+
+#include <stdio.h>
+
+#include <dom/dom.h>
+
+#include "dom/debug.h"
+
+
+#ifdef NSL_DOM_TRACE
+
+/**
+ * Convert a dom node type to a string
+ *
+ * \param[in]  type		DOM node type
+ * \return appropriate string.
+ */
+static inline const char *nsl__dom_node_type_to_string(dom_node_type type)
+{
+	static const char *str[DOM_NODE_TYPE_COUNT] = {
+		[DOM_ELEMENT_NODE]                = "ELEMENT_NODE",
+		[DOM_ATTRIBUTE_NODE]              = "ATTRIBUTE_NODE",
+		[DOM_TEXT_NODE]                   = "TEXT_NODE",
+		[DOM_CDATA_SECTION_NODE]          = "CDATA_SECTION_NODE",
+		[DOM_ENTITY_REFERENCE_NODE]       = "ENTITY_REFERENCE_NODE",
+		[DOM_ENTITY_NODE]                 = "ENTITY_NODE",
+		[DOM_PROCESSING_INSTRUCTION_NODE] = "PROCESSING_INSTRUCTION_NODE",
+		[DOM_COMMENT_NODE]                = "COMMENT_NODE",
+		[DOM_DOCUMENT_NODE]               = "DOCUMENT_NODE",
+		[DOM_DOCUMENT_TYPE_NODE]          = "DOCUMENT_TYPE_NODE",
+		[DOM_DOCUMENT_FRAGMENT_NODE]      = "DOCUMENT_FRAGMENT_NODE",
+		[DOM_NOTATION_NODE]               = "NOTATION_NODE"
+	};
+
+	return str[type];
+}
+
+
+/* Exported function, documented in src/dom/debug.h */
+void nsl__dom_debug_dump_event(const struct dom_event *evt)
+{
+	dom_event_target *node = NULL;
+	dom_node_type node_type;
+	dom_string *name = NULL;
+	dom_string *type = NULL;
+	dom_exception exc;
+
+	printf("  DOM Event: ");
+
+	/* Ugly test to see what events come out */
+	exc = dom_event_get_target(evt, &node);
+	if ((exc != DOM_NO_ERR) || (node == NULL)) {
+		printf("FAILED to get target node!\n");
+		goto fail;
+	}
+
+	exc = dom_node_get_node_type(node, &node_type);
+	if (exc != DOM_NO_ERR) {
+		printf("FAILED to get target node type!\n");
+		goto fail;
+	}
+
+	if (node_type == DOM_ELEMENT_NODE) {
+		exc = dom_node_get_node_name(node, &name);
+		if ((exc != DOM_NO_ERR) || (name == NULL)) {
+			printf("FAILED to get target node name!\n");
+			goto fail;
+		}
+	}
+
+	exc = dom_event_get_type(evt, &type);
+	if ((exc != DOM_NO_ERR) || (type == NULL)) {
+		printf("FAILED to get event type!\n");
+		goto fail;
+	}
+
+	if (node_type == DOM_ELEMENT_NODE) {
+		printf("<%s> %s",
+				dom_string_data(name),
+				dom_string_data(type));
+	} else {
+		printf("%s %s",
+				nsl__dom_node_type_to_string(node_type),
+				dom_string_data(type));
+	}
+
+fail:
+	if (type != NULL) dom_string_unref(type);
+	if (name != NULL) dom_string_unref(name);
+	if (node != NULL) dom_node_unref(node);
+
+	printf("\n");
+}
+
+#endif