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#include <cstdlib>
#define _GNU_SOURCE
#include <getopt.h>
#include "commandline.h"
Commandline::~Commandline (void)
{
std::map<std::string, Option *>::iterator i;
for (i = OptionsByName.begin (); i != OptionsByName.end (); i++)
delete i->second;
}
Commandline::Option &
Commandline::option (const std::string &n)
{
return *OptionsByName[n];
}
void
Commandline::AddOption (Option *op)
{
OptionsByName[op->name] = op;
OptionsBySop [op->shortop] = op;
}
void
Commandline::parse (int argc, char *argv[])
{
struct option *lopts = new struct option[OptionsByName.size ()];
std::string sopts;
std::map<std::string, Option *>::iterator i;
int c, j, option_index;
for (i = OptionsByName.begin (), j = 0; i != OptionsByName.end (); i++, j++) {
lopts[j].name = i->second->name.c_str ();
lopts[j].has_arg = i->second->argument;
lopts[j].flag = 0;
lopts[j].val = i->second->shortop;
if (i->second->shortop) {
sopts += i->second->shortop;
if (i->second->argument)
sopts += ':';
}
}
while ((c = getopt_long (argc, argv, sopts.c_str (), lopts, &option_index)) != -1) {
if (c != '?') {
Option *o = c ? OptionsBySop[c] : OptionsByName[lopts[option_index].name];
o->value = o->argument ? optarg : "true";
}
}
delete [] lopts;
}
void
Commandline::dump (std::ostream &dst) const
{
using namespace std;
map<string, Option *>::const_iterator i;
for (i = OptionsByName.begin (); i != OptionsByName.end (); i++) {
dst << "option \"" << i->second->name << "\" has value \"" << i->second->value << "\"" << endl;
}
}
std::ostream &
operator<< (std::ostream &dst, const Commandline &cmdline)
{
cmdline.dump (dst);
return dst;
}
std::ostream &
operator<< (std::ostream &dst, const Commandline *cmdline)
{
cmdline->dump (dst);
return dst;
}
Commandline::Option::Option (const char *n, char sop, const char *defval):
name (n),
shortop (sop),
argument (defval != 0),
value (argument ? defval : "false")
{
}
Commandline::Option::~Option (void)
{
}
Commandline::Option::operator bool ()
{
return ((value == "true") || (value == "1"));
}
Commandline::Option::operator int ()
{
const char *startptr = value.c_str ();
char *endptr;
long int result = std::strtol (startptr, &endptr, 0);
if (startptr == endptr)
throw InvalidArg (startptr);
return result;
}
Commandline::Option::operator double ()
{
const char *startptr = value.c_str ();
char *endptr;
double result = std::strtod (startptr, &endptr);
if (startptr == endptr)
throw InvalidArg (startptr);
return result;
}
Commandline::Option::operator std::string ()
{
return value;
}
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