prosody
0b0a42542456
util/argparse.lua

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util/argparse.lua @ 11056:0b0a42542456

util.jid: Fix special escaping of '\' per XEP-0106 From XEP-0106 §2. Requirements: > in certain circumstances, the escaping character itself ("\") might > also be escaped Later in §4.2 Address Transformation Algorithm it is stated that the backslash would only be escaped if it forms an escape sequence. Thus '\foo' is unaltered but '\20' must be escaped into '\5c20'. Thanks to lovetox and jonas’ for brining up.
author Kim Alvefur <zash@zash.se>
date Fri, 28 Aug 2020 18:44:02 +0200
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 }