prosody
11f285a439a4
util/argparse.lua

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util/argparse.lua @ 11192:11f285a439a4

tools/cfgdump: Reads Prosody config file and pretty-prints it back out Useful for comparing what you think you have in your config with what Prosody sees, e.g. wrt (lack of) significance of indentation, order of options vs scope etc. (global options do not go at the end!) Could probably be turned into a prosodyctl command, especially if it learns to redact secrets and passwords.
author Kim Alvefur <zash@zash.se>
date Wed, 28 Oct 2020 22:48:31 +0100
parent 10936:d770435f0f84
child 11846:6425dfa3de45
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1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
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1 local function parse(arg, config)
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2 local short_params = config and config.short_params or {};
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3 local value_params = config and config.value_params or {};
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4
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5 local parsed_opts = {};
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6
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7 if #arg == 0 then
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8 return parsed_opts;
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9 end
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10 while true do
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11 local raw_param = arg[1];
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12 if not raw_param then
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13 break;
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14 end
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15
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16 local prefix = raw_param:match("^%-%-?");
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17 if not prefix then
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18 break;
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19 elseif prefix == "--" and raw_param == "--" then
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20 table.remove(arg, 1);
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21 break;
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22 end
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23 local param = table.remove(arg, 1):sub(#prefix+1);
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24 if #param == 1 and short_params then
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25 param = short_params[param];
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26 end
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27
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28 if not param then
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29 return nil, "param-not-found", param;
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30 end
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31
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32 local param_k, param_v;
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33 if value_params[param] then
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34 param_k, param_v = param, table.remove(arg, 1);
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35 if not param_v then
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36 return nil, "missing-value", raw_param;
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37 end
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38 else
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39 param_k, param_v = param:match("^([^=]+)=(.+)$");
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40 if not param_k then
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41 if param:match("^no%-") then
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42 param_k, param_v = param:sub(4), false;
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43 else
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44 param_k, param_v = param, true;
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45 end
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46 end
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47 end
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48 parsed_opts[param_k] = param_v;
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49 end
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50 return parsed_opts;
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51 end
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52
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53 return {
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54 parse = parse;
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55 }