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[thin_dump] start refactoring format code

This commit is contained in:
Joe Thornber 2016-03-23 10:52:04 +00:00
parent 4370f048c0
commit 872a933072
1 changed files with 29 additions and 22 deletions
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51
thin-provisioning/thin_dump.cc
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@ -38,10 +38,13 @@ namespace {
// FIXME: put the path into the flags
struct flags {
flags()
: use_metadata_snap(false) {
: format("xml"),
use_metadata_snap(false) {
}
dump_options opts;
string format;
bool use_metadata_snap;
optional<block_address> snap_location;
};
@ -53,22 +56,27 @@ namespace {
return md;
}
int dump_(string const &path, ostream &out, string const &format, struct flags &flags) {
emitter::ptr create_emitter(string const &format, ostream &out) {
emitter::ptr e;
if (format == "xml")
e = create_xml_emitter(out);
else if (format == "human_readable")
e = create_human_readable_emitter(out);
else {
cerr << "unknown format '" << format << "'" << endl;
exit(1);
}
return e;
}
int dump_(string const &path, ostream &out, struct flags &flags) {
try {
metadata::ptr md = open_metadata(path, flags);
emitter::ptr e;
if (format == "xml")
e = create_xml_emitter(out);
else if (format == "human_readable")
e = create_human_readable_emitter(out);
else {
cerr << "unknown format '" << format << "'" << endl;
exit(1);
}
emitter::ptr e = create_emitter(flags.format, out);
metadata_dump(md, e, flags.opts);
} catch (std::exception &e) {
@ -79,12 +87,12 @@ namespace {
return 0;
}
int dump(string const &path, char const *output, string const &format, struct flags &flags) {
int dump(string const &path, char const *output, struct flags &flags) {
if (output) {
ofstream out(output);
return dump_(path, out, format, flags);
return dump_(path, out, flags);
} else
return dump_(path, cout, format, flags);
return dump_(path, cout, flags);
}
}
@ -101,7 +109,7 @@ thin_dump_cmd::usage(std::ostream &out) const
out << "Usage: " << get_name() << " [options] {device|file}\n"
<< "Options:\n"
<< " {-h|--help}\n"
<< " {-f|--format} {xml|human_readable}\n"
<< " {-f|--format} {xml|human_readable|custom}\n"
<< " {-r|--repair}\n"
<< " {-m|--metadata-snap} [block#]\n"
<< " {-o <xml file>}\n"
@ -116,7 +124,6 @@ thin_dump_cmd::run(int argc, char **argv)
char const *output = NULL;
const char shortopts[] = "hm::o:f:rV";
char *end_ptr;
string format = "xml";
block_address metadata_snap = 0;
uint64_t dev_id;
struct flags flags;
@ -140,7 +147,7 @@ thin_dump_cmd::run(int argc, char **argv)
return 0;
case 'f':
format = optarg;
flags.format = optarg;
break;
case 'r':
@ -196,7 +203,7 @@ thin_dump_cmd::run(int argc, char **argv)
return 1;
}
return dump(argv[optind], output, format, flags);
return dump(argv[optind], output, flags);
}
//----------------------------------------------------------------