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[thin_dump] add -o switch

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This commit is contained in:
Joe Thornber 2013-06-28 12:17:43 +01:00
parent 9716a2cdbd
commit 2fc95b3a2d
1 changed files with 17 additions and 5 deletions
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22
thin-provisioning/thin_dump.cc
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@ -16,6 +16,7 @@
// with thin-provisioning-tools. If not, see
// <http://www.gnu.org/licenses/>.
#include <fstream>
#include <iostream>
#include <getopt.h>
#include <libgen.h>
@ -31,16 +32,16 @@ using namespace std;
using namespace thin_provisioning;
namespace {
int dump(string const &path, string const &format, bool repair,
int dump(string const &path, ostream &out, string const &format, bool repair,
block_address metadata_snap = 0) {
try {
metadata::ptr md(new metadata(path, metadata::OPEN));
emitter::ptr e;
if (format == "xml")
e = create_xml_emitter(cout);
e = create_xml_emitter(out);
else if (format == "human_readable")
e = create_human_readable_emitter(cout);
e = create_human_readable_emitter(out);
else {
cerr << "unknown format '" << format << "'" << endl;
exit(1);
@ -63,6 +64,7 @@ namespace {
<< " {-f|--format} {xml|human_readable}" << endl
<< " {-r|--repair}" << endl
<< " {-m|--metadata-snap}" << endl
<< " {-o <xml file>}" << endl
<< " {-V|--version}" << endl;
}
}
@ -71,7 +73,8 @@ int main(int argc, char **argv)
{
int c;
bool repair = false;
const char shortopts[] = "hm:f:rV";
char const *output = NULL;
const char shortopts[] = "hm:o:f:rV";
string format = "xml";
block_address metadata_snap = 0;
char *end_ptr;
@ -79,6 +82,7 @@ int main(int argc, char **argv)
const struct option longopts[] = {
{ "help", no_argument, NULL, 'h'},
{ "metadata-snap", required_argument, NULL, 'm' },
{ "output", required_argument, NULL, 'o'},
{ "format", required_argument, NULL, 'f' },
{ "repair", no_argument, NULL, 'r'},
{ "version", no_argument, NULL, 'V'},
@ -108,6 +112,10 @@ int main(int argc, char **argv)
}
break;
case 'o':
output = optarg;
break;
case 'V':
cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
return 0;
@ -124,5 +132,9 @@ int main(int argc, char **argv)
return 1;
}
return dump(argv[optind], format, repair, metadata_snap);
if (output) {
ofstream out(output);
return dump(argv[optind], out, format, repair, metadata_snap);
} else
return dump(argv[optind], cout, format, repair, metadata_snap);
}