HDImageCLI.cc

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#include "HDImageCLI.hh"
#include "CommandLineParser.hh"
#include "MSXException.hh"
#include "ranges.hh"
#include <utility>
#include <vector>

using std::pair;
using std::string;

namespace openmsx {

static std::vector<pair<int, string>> 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 string& option, span<string>& cmdLine)
{
        // Machine has not been loaded yet. Only remember the image.
        int id = option[3] - 'a';
        images.emplace_back(id, getArgument(option, cmdLine));
}

string HDImageCLI::getImageForId(int id)
{
        // HD queries image. Return (and clear) the remembered value, or return
        // an empty string.
        auto it = ranges::find_if(images, [&](auto& p) { return p.first == id; });
        string result;
        if (it != end(images)) {
                result = std::move(it->second);
                images.erase(it);
        }
        return result;
}

void HDImageCLI::parseDone()
{
        // After parsing all remembered values should be cleared. If not there
        // was no 'hdX' hard disk.
        if (!images.empty()) {
                string hd = "hdX";
                hd[2] = 'a' + images.front().first;
                throw MSXException("No hard disk named '", hd, "'.");
        }
}

string_view HDImageCLI::optionHelp() const
{
        return "Use hard disk image in argument for the IDE or SCSI extensions";
}

} // namespace openmsx