Function ConExec

src/console_cmds.cpp:1168–1214

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static bool ConExec(std::span<std::string_view> argv)
{
	if (argv.empty()) {
		IConsolePrint(CC_HELP, "Execute a local script file. Usage: 'exec <script> [0]'.");
		IConsolePrint(CC_HELP, "By passing '0' after the script name, no warning about a missing script file will be shown.");
		return true;
	}

	if (argv.size() < 2) return false;

	auto script_file = FioFOpenFile(argv[1], "r", BASE_DIR);

	if (!script_file.has_value()) {
		if (argv.size() == 2 || argv[2] != "0") IConsolePrint(CC_ERROR, "Script file '{}' not found.", argv[1]);
		return true;
	}

	if (_script_current_depth == 11) {
		IConsolePrint(CC_ERROR, "Maximum 'exec' depth reached; script A is calling script B is calling script C ... more than 10 times.");
		return true;
	}

	_script_current_depth++;
	uint script_depth = _script_current_depth;

	char buffer[ICON_CMDLN_SIZE];
	while (fgets(buffer, sizeof(buffer), *script_file) != nullptr) {
		/* Remove newline characters from the executing script */
		std::string_view cmdline{buffer};
		auto last_non_newline = cmdline.find_last_not_of("\r\n");
		if (last_non_newline != std::string_view::npos) cmdline = cmdline.substr(0, last_non_newline + 1);

		IConsoleCmdExec(cmdline);
		/* Ensure that we are still on the same depth or that we returned via 'return'. */
		assert(_script_current_depth == script_depth || _script_current_depth == script_depth - 1);

		/* The 'return' command was executed. */
		if (_script_current_depth == script_depth - 1) break;
	}

	if (ferror(*script_file) != 0) {
		IConsolePrint(CC_ERROR, "Encountered error while trying to read from script file '{}'.", argv[1]);
	}

	if (_script_current_depth == script_depth) _script_current_depth--;
	return true;
}

static bool ConSchedule(std::span<std::string_view> argv)
{