thin-provisioning-tools/contrib/thin_sexp_emitter.cc

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#include "base/indented_stream.h"
#include "thin-provisioning/emitter.h"
using namespace std;
using namespace thin_provisioning;
//----------------------------------------------------------------
namespace {
class sexp_emitter : public emitter {
public:
sexp_emitter(ostream &out)
: out_(out) {
}
virtual void begin_superblock(std::string const &uuid,
uint64_t time,
uint64_t trans_id,
boost::optional<uint32_t> flags,
boost::optional<uint32_t> version,
uint32_t data_block_size,
uint64_t nr_data_blocks,
boost::optional<uint64_t> metadata_snap) {
open("superblock");
out_.indent();
out_ << "((uuid \"" << uuid << "\")\n";
kv("time", time);
kv("trans_id", trans_id);
kv("flags", flags);
kv("version", version);
kv("data_block_size", data_block_size);
kv("nr_data_blocks", nr_data_blocks);
kv("metadata_snap", metadata_snap);
out_.indent();
out_ << ")\n";
}
virtual void end_superblock() {
close();
}
virtual void begin_device(uint32_t dev_id,
uint64_t mapped_blocks,
uint64_t trans_id,
uint64_t creation_time,
uint64_t snap_time) {
open("device");
out_.indent();
out_ << "((dev_id " << dev_id << ")\n";
kv("mapped_blocks", mapped_blocks);
kv("trans_id", trans_id);
kv("creation_time", creation_time);
kv("snap_time", snap_time);
out_.indent();
out_ << ")\n";
}
virtual void end_device() {
close();
}
virtual void begin_named_mapping(std::string const &name) {
}
virtual void end_named_mapping() {
}
virtual void identifier(std::string const &name) {
}
virtual void range_map(uint64_t origin_begin, uint64_t data_begin, uint32_t time, uint64_t len) {
out_.indent();
out_ << "(range (origin_begin " << origin_begin
<< ") (data_begin " << data_begin
<< ") (time " << time
<< ") (len " << len << "))\n";
}
virtual void single_map(uint64_t origin_block, uint64_t data_block, uint32_t time) {
out_.indent();
out_ << "(single (origin_block " << origin_block
<< ") (data_block " << data_block
<< ") (time " << time << "))\n";
}
private:
void open(char const *tag) {
out_.indent();
out_ << "(" << tag << "\n";
out_.inc();
}
void close() {
out_.dec();
out_.indent();
out_ << ")\n";
}
template <typename T>
void kv(char const *k, T const &v) {
out_.indent();
out_ << " (" << k << " " << v << ")\n";
}
indented_stream out_;
};
}
//----------------------------------------------------------------
extern "C" {
emitter::ptr create_emitter(ostream &out) {
return emitter::ptr(new sexp_emitter(out));
}
}
//----------------------------------------------------------------