File

util/argparse.lua @ 11993:aa60f4353001

mod_http_file_share: Merge file expiry loops Not sure what the benefit of two separate loops was, perhaps reduced memory usage by allowing archive query state to be garbage collected before moving on to deleting files. Never measured so probably not so. This simplifies a bit.
author Kim Alvefur <zash@zash.se>
date Tue, 30 Nov 2021 00:53:22 +0100 (2021-11-29)
parent 11846:6425dfa3de45
child 12475:553c6204fe5b
line wrap: on
line source
local function parse(arg, config)
	local short_params = config and config.short_params or {};
	local value_params = config and config.value_params or {};

	local parsed_opts = {};

	if #arg == 0 then
		return parsed_opts;
	end
	while true do
		local raw_param = arg[1];
		if not raw_param then
			break;
		end

		local prefix = raw_param:match("^%-%-?");
		if not prefix then
			break;
		elseif prefix == "--" and raw_param == "--" then
			table.remove(arg, 1);
			break;
		end
		local param = table.remove(arg, 1):sub(#prefix+1);
		if #param == 1 and short_params then
			param = short_params[param];
		end

		if not param then
			return nil, "param-not-found", raw_param;
		end

		local param_k, param_v;
		if value_params[param] then
			param_k, param_v = param, table.remove(arg, 1);
			if not param_v then
				return nil, "missing-value", raw_param;
			end
		else
			param_k, param_v = param:match("^([^=]+)=(.+)$");
			if not param_k then
				if param:match("^no%-") then
					param_k, param_v = param:sub(4), false;
				else
					param_k, param_v = param, true;
				end
			end
		end
		parsed_opts[param_k] = param_v;
	end
	return parsed_opts;
end

return {
	parse = parse;
}