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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
#include <regex>
#include <cctype>
#include "common/assert.h"
#include "common/logging.h"
#include "common/settings.h"
#include "common/string_util.h"
#include "common/scm_rev.h"
#include "core/core.h"
#include "core/hle/service/acc/profile_manager.h"
#include "core/launch_params.h"
#undef _UNICODE
#include <getopt.h>
#ifndef _MSC_VER
#include <unistd.h>
#endif
namespace Core {
LaunchParams ParseLaunchParams(Core::System& system, int argc, char *argv[], wchar_t *argv_w[]) noexcept {
LaunchParams p{};
int option_index = 0;
static struct option long_options[] = {
// clang-format off
{"debug", no_argument, 0, 'd'},
{"config", required_argument, 0, 'c'},
{"fullscreen", no_argument, 0, 'f'},
{"help", no_argument, 0, 'h'},
{"game", required_argument, 0, 'g'},
{"multiplayer", required_argument, 0, 'm'},
{"program", optional_argument, 0, 'p'},
{"user", required_argument, 0, 'u'},
{"version", no_argument, 0, 'v'},
{"input-profile", no_argument, 0, 'i'},
{"null-render", no_argument, 0, 'n'},
{"singlecore", no_argument, 0, 's'},
{"filter", no_argument, 0, 'x'},
{0, 0, 0, 0},
// clang-format on
};
while (optind < argc) {
if (int arg = getopt_long(argc, argv, "dc:fhg:m:p:u:vinsx", long_options, &option_index); arg != -1) {
switch (char(arg)) {
case 'd':
p.override_gdb_port = uint16_t(atoi(optarg));
break;
case 'c':
p.config_path = optarg;
break;
case 'f':
p.fullscreen = true;
LOG_INFO(Frontend, "Starting in fullscreen mode...");
break;
case 'h':
p.print_help = true;
break;
case 'g':
p.filepath = std::string(optarg);
break;
case 'i': {
p.input_profile = std::string(optarg);
break;
}
case 'm': {
p.use_multiplayer = true;
const std::string str_arg(optarg);
// regex to check if the format is nickname:password@ip:port
// with optional :password
const std::regex re("^([^:]+)(?::(.+))?@([^:]+)(?::([0-9]+))?$");
if (std::regex_match(str_arg, re)) {
std::smatch match;
std::regex_search(str_arg, match, re);
ASSERT(match.size() == 5);
p.nickname = match[1];
p.password = match[2];
p.address = match[3];
if (!match[4].str().empty()) {
p.port = u16(std::strtoul(match[4].str().c_str(), nullptr, 0));
}
std::regex nickname_re("^[a-zA-Z0-9._\\- ]+$");
ASSERT(std::regex_match(p.nickname, nickname_re) && "Nickname is not valid. Must be 4 to 20 alphanumeric characters");
ASSERT(!p.address.empty() && "Address is empty");
}
break;
}
case 'p':
p.program_args = argv[optind];
++optind;
break;
case 'u': {
// Launch game with a specific user
bool argument_ok = isdigit(optarg[0]) != 0;
p.selected_user = atoi(optarg);
if (!argument_ok) {
// try to look it up by username, only finds the first username that matches.
auto const user_idx = system.GetProfileManager().GetUserIndex(optarg);
if (user_idx != std::nullopt) {
p.selected_user = user_idx.value();
} else {
LOG_ERROR(Frontend, "Invalid user argument '{}'", optarg);
break;
}
}
if (system.GetProfileManager().UserExistsIndex(*p.selected_user)) {
Settings::values.current_user = s32(*p.selected_user);
} else {
LOG_ERROR(Frontend, "Selected user {} doesn't exist", *p.selected_user);
}
break;
}
case 'v':
p.print_version = true;
break;
case 'n':
p.force_null_render = true;
break;
case 's':
p.force_single_core = true;
break;
case 'x':
p.log_filter = argv[optind];
++optind;
break;
}
} else {
// only kept due to shortcuts made by Qt frontend which use "-qlaunch"
if (strcmp(argv[optind], "-hlaunch") == 0) {
p.launch_hlaunch = true;
} else if (strcmp(argv[optind], "-qlaunch") == 0) {
p.launch_qlaunch = true;
} else if (strcmp(argv[optind], "-setup") == 0) {
p.launch_setup = true;
} else {
// qt feeds utf8 data, sdl frontend feeds raw utf16 data
#ifdef _WIN32
p.filepath = argv_w != nullptr
? Common::UTF16ToUTF8(argv_w[optind])
: argv[optind];
#else
p.filepath = argv[optind];
#endif
}
optind++;
}
}
p.argv0 = argv[0];
return p;
}
void ApplyLaunchParams(LaunchParams const& lp) noexcept {
// apply the log_filter setting
// the logger was initialized before and doesn't pick up the filter on its own
Common::Log::Filter filter{};
filter.ParseFilterString(lp.log_filter.value_or(Settings::values.log_filter.GetValue()));
Common::Log::SetGlobalFilter(filter);
if (!lp.program_args.empty()) {
Settings::values.program_args = lp.program_args;
}
if (!lp.input_profile.empty()) {
auto& players = Settings::values.players.GetValue();
players[0].profile_name = lp.input_profile;
}
if (lp.selected_user.has_value()) {
Settings::values.current_user = std::clamp(*lp.selected_user, 0, 7);
}
if (lp.override_gdb_port.has_value()) {
Settings::values.use_gdbstub = true;
Settings::values.gdbstub_port = *lp.override_gdb_port;
}
if (lp.force_single_core) {
Settings::values.use_multi_core = false;
}
if (lp.force_null_render) {
Settings::values.renderer_backend = Settings::RendererBackend::Null;
}
if (lp.print_version) {
LOG_INFO(Frontend, "Eden {} {}", Common::g_scm_branch, Common::g_scm_desc);
}
if (lp.print_help) {
LOG_INFO(Frontend,
"Usage: {}"
" [options] <filename>\n"
"-c, --config Load the specified configuration file\n"
"-f, --fullscreen Start in fullscreen mode\n"
"-g, --game File path of the game to load\n"
"-h, --help Display this help and exit\n"
"-m, --multiplayer=nick:password@address:port"
" Nickname, password, address and port for multiplayer\n"
"-p, --program Pass following string as arguments to executable\n"
"-u, --user Select a specific user profile from 0 to 7\n"
"-d, --debug Run the GDB stub on a port from 1 to 65535\n"
"-v, --version Output version information and exit\n",
lp.argv0
);
}
}
}
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