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util/argparse.lua @ 13135:3fd24e1945b0
mod_storage_internal: Lazy-load archive items while iterating
Very large list files previously ran into limits of the Lua parser, or
just caused Prosody to freeze while parsing.
Using the new index we can parse individual items one at a time. This
probably won't reduce overall CPU usage, probably the opposite, but it
will reduce the number of items in memory at once and allow collection
of items after we iterated past them.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 12 May 2021 01:25:44 +0200 (2021-05-11) |
parent | 13058:766152afc1c9 |
child | 13160:4ee9a912ceea |
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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 param_k = param_k:gsub("%-", "_"); end parsed_opts[param_k] = param_v; end for i = 1, #arg do parsed_opts[i] = arg[i]; end return parsed_opts; end return { parse = parse; }