std::shared_ptr<Spec> init_spec_from(const CommandLineOptions& options)
{
std::shared_ptr<Spec> spec;
if (!options.empty()) {
spec = std::make_shared<Spec>();
for (const auto& kv : options) {
auto& key = kv.first;
if (key == _T("-h") || key == _T("--help")) {
return nullptr;
}
else if (key == _T("-v") || key == _T("--verbose")) {
spec->verbose = true;
}
else if (key == _T("-f")) {
auto& args = kv.second;
if (args.size() >= 1) {
auto& format = args[0];
for (int32_t i = 0; i < ARRAYSIZE(kFormats); ++i) {
if (format == kFormats[i]) {
spec->format = kDXGIFormats[i];
break;
}
}
}
}
else if (key == _T("-l")) {
auto& args = kv.second;
if (args.size() >= 1) {
auto& level = args[0];
for (int32_t i = 0; i < ARRAYSIZE(kLevels); ++i) {
if (level == kLevels[i]) {
spec->level = static_cast<Level>(i);
break;
}
}
}
}
else if (key == _T("-rgb")) {
spec->rgb_mode = true;
}
else if (key == _T("-dither")) {
spec->dither = true;
}
else if (key == _T("-i")) {
if (kv.second.size() >= 1) {
spec->input_name = kv.second[0];
}
}
else if (key == _T("-o")) {
if (kv.second.size() >= 1) {
spec->output_name = kv.second[0];
}
}
}
}
return spec;
}
