era_check, era_dump

era/xml_format.cc

@@ -0,0 +1,103 @@
+#include "era/xml_format.h"
+
+using namespace boost;
+using namespace era;
+using namespace persistent_data;
+using namespace std;
+
+//----------------------------------------------------------------
+
+namespace {
+	class xml_emitter : public emitter {
+	public:
+		xml_emitter(ostream &out)
+		: out_(out),
+		  indent_(0) {
+		}
+
+		void begin_superblock(std::string const &uuid,
+				      uint32_t block_size,
+				      pd::block_address nr_blocks,
+				      uint32_t current_era) {
+			indent();
+			out_ << "<superblock uuid=\"" << uuid << "\""
+			     << " block_size=\"" << block_size << "\""
+			     << " nr_blocks=\"" << nr_blocks << "\""
+			     << " current_era=\"" << current_era << "\">" << endl;
+			inc();
+		}
+
+		void end_superblock() {
+			dec();
+			indent();
+			out_ << "</superblock>" << endl;
+		}
+
+		void begin_bloom(uint32_t era, uint32_t nr_bits,
+				 pd::block_address nr_blocks) {
+			indent();
+			out_ << "<bloom era=\"" << era << "\""
+			     << " nr_bits=\"" << nr_bits << "\""
+			     << " nr_blocks=\"" << nr_blocks << "\">" << endl;
+			inc();
+		}
+
+		void bloom_bit(uint32_t bit, bool value) {
+			indent();
+			// FIXME: collect all the bits, then uuencode
+			out_ << "<bit bit=\"" << bit << "\" value=\"" << value << "\">" << endl;
+		}
+
+		void end_bloom() {
+			dec();
+			indent();
+			out_ << "</bloom>" << endl;
+		}
+
+		void begin_era_array() {
+			indent();
+			out_ << "<era_array>" << endl;
+			inc();
+		}
+
+		void era(pd::block_address block, uint32_t era) {
+			indent();
+			out_ << "<era block=\"" << block
+			     << "\" era=\"" << era << "\">" << endl;
+		}
+
+		void end_era_array() {
+			dec();
+			indent();
+			out_ << "</era_array>" << endl;
+		}
+
+	private:
+		// FIXME: factor out a common class with the thin_provisioning emitter
+		void indent() {
+			for (unsigned i = 0; i < indent_ * 2; i++)
+				out_ << ' ';
+		}
+
+		void inc() {
+			indent_++;
+		}
+
+		void dec() {
+			indent_--;
+		}
+
+		ostream &out_;
+		unsigned indent_;
+	};
+}
+
+//----------------------------------------------------------------
+
+emitter::ptr
+era::create_xml_emitter(std::ostream &out)
+{
+	return emitter::ptr(new xml_emitter(out));
+}
+
+//----------------------------------------------------------------