thin dump now does something useful

human_readable_format.cc

@@ -0,0 +1,89 @@
+#include "human_readable_format.h"
+
+#include <iostream>
+
+using namespace std;
+using namespace thin_provisioning;
+
+//----------------------------------------------------------------
+
+namespace {
+	class hr_emitter : public emitter {
+	public:
+		hr_emitter(ostream &out)
+			: out_(out) {
+		}
+
+		void begin_superblock(string const &uuid,
+				      uint64_t time,
+				      uint64_t trans_id,
+				      uint32_t data_block_size) {
+			out_ << "begin superblock: " << uuid
+			     << ", " << time
+			     << ", " << trans_id
+			     << ", " << data_block_size
+			     << endl;
+		}
+
+		void end_superblock() {
+			out_ << "end superblock" << endl;
+		}
+
+		void begin_device(uint32_t dev_id,
+				  uint64_t mapped_blocks,
+				  uint64_t trans_id,
+				  uint64_t creation_time,
+				  uint64_t snap_time) {
+			out_ << "device: " << dev_id << endl
+			     << "mapped_blocks: " << mapped_blocks << endl
+			     << "transaction: " << trans_id << endl
+			     << "creation time: " << creation_time << endl
+			     << "snap time: " << snap_time << endl;
+		}
+
+		void end_device() {
+			out_ << endl;
+		}
+
+		void begin_named_mapping(string const &name) {
+			out_ << "begin named mapping"
+			     << endl;
+		}
+
+		void end_named_mapping() {
+			out_ << "end named mapping"
+			     << endl;
+		}
+
+		void identifier(string const &name) {
+			out_ << "identifier: " << name << endl;
+		}
+
+		void range_map(uint64_t origin_begin, uint64_t data_begin, uint64_t len) {
+			out_ << "    (" << origin_begin
+			     << ".." << origin_begin + len - 1
+			     << ") -> (" << data_begin
+			     << ".." << data_begin + len - 1
+			     << ")" << endl;
+		}
+
+		void single_map(uint64_t origin_block, uint64_t data_block) {
+			out_ << "    " << origin_block
+			     << " -> " << data_block
+			     << endl;
+		}
+
+	private:
+		ostream &out_;
+	};
+}
+
+//----------------------------------------------------------------
+
+thin_provisioning::emitter::ptr
+thin_provisioning::create_human_readable_emitter(ostream &out)
+{
+	return emitter::ptr(new hr_emitter(out));
+}
+
+//----------------------------------------------------------------