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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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37
base/application.cc
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@ -1,14 +1,47 @@
#include "base/application.h"
#include <boost/lexical_cast.hpp>
#include <libgen.h>
#include <linux/limits.h>
#include <string.h>
#include <stdlib.h>
using namespace base;
using namespace boost;
using namespace std;
//----------------------------------------------------------------
command::command(string const &name)
: name_(name) {
}
void
command::die(string const &msg)
{
cerr << msg << endl;
usage(cerr);
exit(1);
}
uint64_t
command::parse_uint64(string const &str, string const &desc)
{
try {
// FIXME: check trailing garbage is handled
return lexical_cast<uint64_t>(str);
} catch (...) {
ostringstream out;
out << "Couldn't parse " << desc << ": '" << str << "'";
die(out.str());
}
return 0; // never get here
}
//----------------------------------------------------------------
int
application::run(int argc, char **argv)
{
@ -26,7 +59,7 @@ application::run(int argc, char **argv)
cmd = argv[0];
}
std::list<command const *>::const_iterator it;
std::list<command::ptr>::const_iterator it;
for (it = cmds_.begin(); it != cmds_.end(); ++it) {
if (cmd == (*it)->get_name())
return (*it)->run(argc, argv);
@ -43,7 +76,7 @@ application::usage()
std::cerr << "Usage: <command> <args>\n"
<< "commands:\n";
std::list<command const *>::const_iterator it;
std::list<command::ptr>::const_iterator it;
for (it = cmds_.begin(); it != cmds_.end(); ++it) {
std::cerr << " " << (*it)->get_name() << "\n";
}