From 0724047fbbbf02e053e2686299d726fcb2c7d295 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 20 Feb 2023 18:42:30 +0000
Subject: Add SAXParse base class

---
 Jamroot.jam      |  2 ++
 lib/saxParse.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 lib/saxParse.h   | 21 +++++++++++++++++++++
 3 files changed, 64 insertions(+)
 create mode 100644 lib/saxParse.cpp
 create mode 100644 lib/saxParse.h

diff --git a/Jamroot.jam b/Jamroot.jam
index 16c22ac..27db410 100644
--- a/Jamroot.jam
+++ b/Jamroot.jam
@@ -12,6 +12,7 @@ pkg-config.import sdl2 ;
 pkg-config.import glew ;
 pkg-config.import freetype2 ;
 pkg-config.import glib-2.0 ;
+pkg-config.import mxml ;
 lib pthread ;
 lib OpenMeshCore ;
 
@@ -112,6 +113,7 @@ lib ilt :
 	<library>glew
 	<library>freetype2
 	<library>glib-2.0
+	<library>mxml
 	<library>pthread
 	<library>OpenMeshCore
 	: :
diff --git a/lib/saxParse.cpp b/lib/saxParse.cpp
new file mode 100644
index 0000000..d592a1f
--- /dev/null
+++ b/lib/saxParse.cpp
@@ -0,0 +1,41 @@
+#include "saxParse.h"
+#include "mxml.h"
+
+namespace Persistence {
+	void
+	SAXParse::comment(mxml_node_t *)
+	{
+		// Default to just ignore comments
+	}
+
+	void
+	SAXParse::parseFile(FILE * file)
+	{
+		mxmlSAXLoadFile(
+				nullptr, file, MXML_TEXT_CALLBACK,
+				[](mxml_node_t * n, mxml_sax_event_t e, void * data) {
+					SAXParse * self = static_cast<SAXParse *>(data);
+					switch (e) {
+						case MXML_SAX_ELEMENT_OPEN:
+							return self->elementOpen(n);
+							break;
+						case MXML_SAX_ELEMENT_CLOSE:
+							return self->elementClose(n);
+							break;
+						case MXML_SAX_COMMENT:
+							return self->comment(n);
+							break;
+						case MXML_SAX_DATA:
+							return self->data(n);
+							break;
+						case MXML_SAX_DIRECTIVE:
+							return self->directive(n);
+							break;
+						case MXML_SAX_CDATA:;
+							return self->cdata(n);
+							break;
+					}
+				},
+				this);
+	}
+}
diff --git a/lib/saxParse.h b/lib/saxParse.h
new file mode 100644
index 0000000..d5baaca
--- /dev/null
+++ b/lib/saxParse.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <cstdio>
+
+typedef struct _mxml_node_s mxml_node_t;
+
+namespace Persistence {
+	class SAXParse {
+	public:
+		virtual ~SAXParse() = default;
+
+		virtual void elementOpen(mxml_node_t *) = 0;
+		virtual void elementClose(mxml_node_t *) = 0;
+		virtual void comment(mxml_node_t *);
+		virtual void data(mxml_node_t *) = 0;
+		virtual void directive(mxml_node_t *) = 0;
+		virtual void cdata(mxml_node_t *) = 0;
+
+		void parseFile(FILE * file);
+	};
+}
-- 
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