prosody
763bb2ce3f60
util/argparse.lua

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util/argparse.lua @ 10799:763bb2ce3f60

util.pposix,signal: Pass around various OS numbers as integers [Lua 5.3] Passing around PIDs, UIDs etc as integers makes it more sane in Lua 5.3. Getting 1234.0 as PID is silly. Shouldn't change any behavior as these are all integers on the C side and the integral floats are accepted as integers when passed back from Lua into C.
author Kim Alvefur <zash@zash.se>
date Mon, 04 May 2020 21:51:30 +0200
parent 10651:1196f1e8d178
child 10936:d770435f0f84
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10651
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 print("Unknown command-line option: "..tostring(param));
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30 print("Perhaps you meant to use prosodyctl instead?");
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31 os.exit(1);
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32 end
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33
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34 local param_k, param_v;
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35 if value_params[param] then
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36 param_k, param_v = param, table.remove(arg, 1);
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37 if not param_v then
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38 print("Expected a value to follow command-line option: "..raw_param);
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39 os.exit(1);
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40 end
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41 else
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42 param_k, param_v = param:match("^([^=]+)=(.+)$");
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43 if not param_k then
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44 if param:match("^no%-") then
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45 param_k, param_v = param:sub(4), false;
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46 else
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47 param_k, param_v = param, true;
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48 end
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49 end
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50 end
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51 parsed_opts[param_k] = param_v;
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52 end
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53 return parsed_opts;
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54 end
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55
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56 return {
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57 parse = parse;
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58 }