[thin_debug] Factor out reusable componments

base/output_formatter.cc

@@ -0,0 +1,53 @@
+#include <string>
+
+#include "base/output_formatter.h"
+
+using namespace dbg;
+using namespace std;
+
+//----------------------------------------------------------------
+
+namespace {
+	void indent(int depth, std::ostream &out) {
+		for (int i = 0; i < depth * 2; i++)
+			out << ' ';
+	}
+}
+
+//----------------------------------------------------------------
+
+void xml_formatter::output(std::ostream &out,
+			   int depth,
+			   boost::optional<std::string> name) {
+	indent(depth, out);
+	out << "<fields";
+	if (name && (*name).length())
+		out << " id=\"" << *name << "\"";
+
+	/* output non-child fields */
+	std::vector<field_type>::const_iterator it;
+	for (it = fields_.begin(); it != fields_.end(); ++it) {
+		if (string const *s = boost::get<string>(&it->get<1>())) {
+			out << " " << it->get<0>() << "=\"" << *s << "\"";
+		}
+	}
+
+	if (children_.size() == 0) {
+		out << " />" << endl;
+		return;
+	}
+
+	/* output child fields */
+	out << ">" << endl;
+	for (it = children_.begin(); it != children_.end(); ++it) {
+		if (!boost::get<string>(&it->get<1>())) {
+			formatter::ptr f = boost::get<formatter::ptr>(it->get<1>());
+			f->output(out, depth + 1, it->get<0>());
+		}
+	}
+
+	indent(depth, out);
+	out << "</fields>" << endl;
+}
+
+//----------------------------------------------------------------