variables_map parse_command_line(int ac, char** av, const options_description & desc)
{
variables_map variables;
option_description const * option = nullptr;
for (int i = 1; i < ac; ++i) {
char const * arg = av[i];
if (option) {
if (!option->value().parse(arg)) {
throw invalid_option_value(*option, arg);
}
variables.ref_descriptions.push_back(*option);
option = nullptr;
}
else if (arg[0] == '-') {
if (arg[1] == '-') {
option = &get_option_description(desc, arg + 2);
if (!option->has_value()) {
variables.ref_descriptions.push_back(*option);
option = nullptr;
}
}
else {
++arg;
do {
option = &get_option_description(desc, arg[0]);
if (option->has_value()) {
if (arg[1]) {
if (!option->value().parse(arg+1)) {
throw invalid_option_value(*option, arg);
}
variables.ref_descriptions.push_back(*option);
option = nullptr;
}
break;
}
variables.ref_descriptions.push_back(*option);
++arg;
option = nullptr;
} while (*arg);
}
}
else {
throw invalid_command_line_syntax();
}
}
if (option) {
throw invalid_command_line_syntax(*option);
}
return variables;
}
void validate(any& v
,vector<std::string> const& values
,Coloring* target_type
,int
)
{ // {{{
// Make sure no previous assignment to 'a' was made.
validators::check_first_occurrence(v);
// Extract the first string from 'values'. If there is more than
// one string, it's an error, and exception will be thrown.
string s = validators::get_single_string(values);
to_lower(s);
static string const plain("plain"), ansi("ansi");
if(equals(s,plain)) {
v = any(PLAIN_COLORING);
} else if(equals(s,ansi)) {
v = any(ANSI_COLORING);
} else {
throw invalid_option_value(s);
}
} // }}}
