From c86f1c6c5a5aab4a5e99bf2617ddf4f15dde20c5 Mon Sep 17 00:00:00 2001
From: Daniel Silverstone <dsilvers@digital-scurf.org>
Date: Sun, 15 Jul 2012 17:46:33 +0100
Subject: XML Binding: Add comment support to Expat handler

---
 bindings/xml/expat_xmlparser.c | 52 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

(limited to 'bindings')

diff --git a/bindings/xml/expat_xmlparser.c b/bindings/xml/expat_xmlparser.c
index 3f9c51c..4c5cbef 100644
--- a/bindings/xml/expat_xmlparser.c
+++ b/bindings/xml/expat_xmlparser.c
@@ -228,6 +228,55 @@ expat_xmlparser_external_entity_ref_handler(XML_Parser parser,
 	return XML_STATUS_OK;
 }
 
+static void
+expat_xmlparser_comment_handler(void *_parser,
+				const XML_Char *_comment)
+{
+	dom_xml_parser *parser = _parser;
+	struct dom_comment *comment, *ins_comment = NULL;
+	dom_string *data;
+	dom_exception err;
+
+	/* Create DOM string data for comment */
+	err = dom_string_create((const uint8_t *)_comment,
+			strlen((const char *) _comment), &data);
+	if (err != DOM_NO_ERR) {
+		parser->msg(DOM_MSG_CRITICAL, parser->mctx,
+				"No memory for comment data");
+		return;
+	}
+
+	/* Create comment */
+	err = dom_document_create_comment(parser->doc, data, &comment);
+	if (err != DOM_NO_ERR) {
+		dom_string_unref(data);
+		parser->msg(DOM_MSG_CRITICAL, parser->mctx,
+					"No memory for comment node");
+		return;
+	}
+
+	/* No longer need data */
+	dom_string_unref(data);
+
+	/* Append comment to parent */
+	err = dom_node_append_child(parser->current, (struct dom_node *) comment,
+			(struct dom_node **) (void *) &ins_comment);
+	if (err != DOM_NO_ERR) {
+		dom_node_unref((struct dom_node *) comment);
+		parser->msg(DOM_MSG_CRITICAL, parser->mctx,
+				"Failed attaching comment node");
+		return;
+	}
+
+	/* We're not interested in the inserted comment */
+	if (ins_comment != NULL)
+		dom_node_unref((struct dom_node *) ins_comment);
+
+	/* No longer interested in comment */
+	dom_node_unref((struct dom_node *) comment);
+
+}
+
 static void
 expat_xmlparser_unknown_data_handler(void *_parser,
 				     const XML_Char *s,
@@ -308,6 +357,9 @@ dom_xml_parser_create(const char *enc, const char *int_enc,
 	XML_SetExternalEntityRefHandler(parser->parser,
 					expat_xmlparser_external_entity_ref_handler);
 
+	XML_SetCommentHandler(parser->parser,
+			      expat_xmlparser_comment_handler);
+
 	XML_SetDefaultHandlerExpand(parser->parser,
 			      expat_xmlparser_unknown_data_handler);
 
-- 
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