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[base] introduce a command type that gets registered with the app

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This commit is contained in:
Joe Thornber
2016-01-08 12:51:52 +00:00
parent a709b9718b
commit c93e728ef4
28 changed files with 776 additions and 411 deletions
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40
thin-provisioning/thin_rmap.cc
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@@ -111,22 +111,30 @@ namespace {
return region(begin, end);
};
void usage(ostream &out, string const &cmd) {
out << "Usage: " << cmd << " [options] {device|file}" << endl
<< "Options:" << endl
<< " {-h|--help}" << endl
<< " {-V|--version}" << endl
<< " {--region <block range>}*" << endl
<< "Where:" << endl
<< " <block range> is of the form <begin>..<one-past-the-end>" << endl
<< " for example 5..45 denotes blocks 5 to 44 inclusive, but not block 45" << endl;
}
}
//----------------------------------------------------------------
int thin_rmap_main(int argc, char **argv)
thin_rmap_cmd::thin_rmap_cmd()
: command("thin_rmap")
{
}
void
thin_rmap_cmd::usage(std::ostream &out) const
{
out << "Usage: " << get_name() << " [options] {device|file}" << endl
<< "Options:" << endl
<< " {-h|--help}" << endl
<< " {-V|--version}" << endl
<< " {--region <block range>}*" << endl
<< "Where:" << endl
<< " <block range> is of the form <begin>..<one-past-the-end>" << endl
<< " for example 5..45 denotes blocks 5 to 44 inclusive, but not block 45" << endl;
}
int
thin_rmap_cmd::run(int argc, char **argv)
{
int c;
vector<region> regions;
@@ -141,7 +149,7 @@ int thin_rmap_main(int argc, char **argv)
while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
switch (c) {
case 'h':
usage(cout, basename(argv[0]));
usage(cout);
return 0;
case 'V':
@@ -161,20 +169,18 @@ int thin_rmap_main(int argc, char **argv)
break;
default:
usage(cerr, basename(argv[0]));
usage(cerr);
return 1;
}
}
if (argc == optind) {
cerr << "No input file provided." << endl;
usage(cerr, basename(argv[0]));
usage(cerr);
exit(1);
}
return rmap(argv[optind], regions);
}
base::command thin_provisioning::thin_rmap_cmd("thin_rmap", thin_rmap_main);
//----------------------------------------------------------------