thin-provisioning-tools/thin_dump.cc

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// This file is part of the thin-provisioning-tools source.
//
// thin-provisioning-tools is free software: you can redistribute it
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// thin-provisioning-tools is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with thin-provisioning-tools. If not, see
// <http://www.gnu.org/licenses/>.
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#include <iostream>
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#include "human_readable_format.h"
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#include "metadata_dumper.h"
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#include "metadata.h"
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#include "xml_format.h"
#include <boost/program_options.hpp>
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using namespace persistent_data;
using namespace std;
using namespace thin_provisioning;
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namespace po = boost::program_options;
//----------------------------------------------------------------
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namespace {
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void dump(string const &path, string const &format) {
metadata::ptr md(new metadata(path, metadata::OPEN));
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emitter::ptr e;
if (format == "xml")
e = create_xml_emitter(cout);
else if (format == "human_readable")
e = create_human_readable_emitter(cout);
else {
cerr << "unknown format '" << format << "'" << endl;
exit(1);
}
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metadata_dump(md, e);
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}
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void usage(po::options_description const &desc) {
cerr << "Usage: thin_dump [options] <metadata device or file>" << endl << endl;
cerr << desc;
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}
}
int main(int argc, char **argv)
{
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po::options_description desc("Options");
desc.add_options()
("help", "Produce help message")
("format,f", po::value<string>()->default_value("xml"), "Select format (human_readable|xml)")
("input,i", po::value<string>(), "Input file")
;
po::positional_options_description p;
p.add("input", -1);
po::variables_map vm;
po::store(po::command_line_parser(argc, argv).options(desc).positional(p).run(), vm);
po::notify(vm);
if (vm.count("help")) {
usage(desc);
return 0;
}
if (vm.count("input") != 1) {
cerr << "No input file provided." << endl;
usage(desc);
return 1;
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}
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dump(vm["input"].as<string>(), vm["format"].as<string>());
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return 0;
}
//----------------------------------------------------------------