commands/TclArgParser.cc

Go to the documentation of this file.

#include "TclArgParser.hh"
#include "CommandException.hh"
#include "join.hh"
#include "ranges.hh"
#include "stl.hh"
#include "view.hh"
 
namespace openmsx {
 
std::vector<TclObject> parseTclArgs(Interpreter& interp, std::span<const TclObject> inArgs, std::span<const ArgsInfo> table)
{
        std::vector<TclObject> outArgs;
        outArgs.reserve(inArgs.size());
 
        while (!inArgs.empty()) {
                auto arg = inArgs.front();
                auto argStr = arg.getString();
                inArgs = inArgs.subspan<1>();
                if (argStr.starts_with('-')) {
                        if (argStr == "--") {
                                append(outArgs, inArgs);
                                break;
                        }
                        auto it = ranges::find(table, argStr, &ArgsInfo::name);
                        if (it == table.end()) {
                                throw CommandException(
                                        "Invalid option: '", argStr, "'. Must be one of ",
                                        join(view::transform(table, [](auto& info) {
                                                     return strCat('\'', info.name, '\'');
                                             }), ", "), '.');
                        }
                        auto consumed = it->func(interp, inArgs);
                        inArgs = inArgs.subspan(consumed);
                } else {
                        outArgs.push_back(arg);
                }
        }
 
        return outArgs;
}
 
} // namespace openmsx