From 2fa6122a3cfa0e801f4a36b39f50e0bf7d575e4b Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sun, 20 Mar 2022 20:59:28 +0100
Subject: fixup! Nearly pretty-print subtitle XML (though not in <Text> nodes).

---
 src/subtitle_asset.cc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/subtitle_asset.cc b/src/subtitle_asset.cc
index de6332e6..bd8bb993 100644
--- a/src/subtitle_asset.cc
+++ b/src/subtitle_asset.cc
@@ -803,6 +803,8 @@ SubtitleAsset::fix_empty_font_ids ()
 }
 
 
+namespace {
+
 struct State
 {
 	int indent;
@@ -810,13 +812,19 @@ struct State
 	int disable_formatting;
 };
 
+}
+
 
 static
 void
 format_xml_node (xmlpp::Node const* node, State& state)
 {
 	if (auto text_node = dynamic_cast<const xmlpp::TextNode*>(node)) {
-		state.xml += text_node->get_content();
+		string content = text_node->get_content();
+		boost::replace_all(content, "&", "&amp;");
+		boost::replace_all(content, "<", "&lt;");
+		boost::replace_all(content, ">", "&gt;");
+		state.xml += content;
 	} else if (auto element = dynamic_cast<const xmlpp::Element*>(node)) {
 		++state.indent;
 
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