HDImageCLI.cc

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#include "HDImageCLI.hh"
#include "CommandLineParser.hh"
#include "MSXException.hh"
#include "ranges.hh"
#include <utility>
#include <vector>
 
namespace openmsx {
 
namespace {
        struct IdImage {
                IdImage(int i, std::string m)
                        : id(i), image(std::move(m)) {} // clang-15 workaround
 
                int id;
                std::string image;
        };
}
static std::vector<IdImage> images;
 
HDImageCLI::HDImageCLI(CommandLineParser& parser_)
        : parser(parser_)
{
        parser.registerOption("-hda", *this, CommandLineParser::PHASE_BEFORE_MACHINE);
        // TODO: offer more options in case you want to specify 2 hard disk images?
}
 
void HDImageCLI::parseOption(const std::string& option, std::span<std::string>& cmdLine)
{
        // Machine has not been loaded yet. Only remember the image.
        int id = option[3] - 'a';
        images.emplace_back(id, getArgument(option, cmdLine));
}
 
std::string HDImageCLI::getImageForId(int id)
{
        // HD queries image. Return (and clear) the remembered value, or return
        // an empty string.
        std::string result;
        if (auto it = ranges::find(images, id, &IdImage::id);
            it != end(images)) {
                result = std::move(it->image);
                images.erase(it);
        }
        return result;
}
 
void HDImageCLI::parseDone()
{
        // After parsing all remembered values should be cleared. If not there
        // was no hard disk as specified.
        if (!images.empty()) {
                auto hd = char(::toupper('a' + images.front().id));
                throw MSXException("No hard disk ", hd, " present.");
        }
}
 
std::string_view HDImageCLI::optionHelp() const
{
        return "Use hard disk image in argument for the IDE or SCSI extensions";
}
 
} // namespace openmsx