prosody
9a86e7cbdd79
util/argparse.lua

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util/argparse.lua @ 13262:9a86e7cbdd79

mod_storage_internal: Fix fast trimming of archive with exactly one item This method would previously never delete the first (and only) item since it works out which item should become the first item after the trim operation, which doesn't make sense when all should be removed. This also works as an optimization for when all the last item should be trimmed, thus items should be removed.
author Kim Alvefur <zash@zash.se>
date Sun, 24 Sep 2023 13:41:54 +0200
parent 13160:4ee9a912ceea
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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 local array_params = config and config.array_params or {};
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5
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6 local parsed_opts = {};
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7
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8 if #arg == 0 then
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9 return parsed_opts;
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10 end
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11 while true do
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12 local raw_param = arg[1];
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13 if not raw_param then
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14 break;
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15 end
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16
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17 local prefix = raw_param:match("^%-%-?");
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18 if not prefix then
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19 break;
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20 elseif prefix == "--" and raw_param == "--" then
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21 table.remove(arg, 1);
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22 break;
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23 end
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24 local param = table.remove(arg, 1):sub(#prefix+1);
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25 if #param == 1 and short_params then
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26 param = short_params[param];
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27 end
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28
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29 if not param then
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30 return nil, "param-not-found", raw_param;
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31 end
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32
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33 local param_k, param_v;
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34 if value_params[param] or array_params[param] then
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35 param_k, param_v = param, table.remove(arg, 1);
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36 if not param_v then
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37 return nil, "missing-value", raw_param;
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38 end
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39 else
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40 param_k, param_v = param:match("^([^=]+)=(.+)$");
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41 if not param_k then
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42 if param:match("^no%-") then
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43 param_k, param_v = param:sub(4), false;
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44 else
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45 param_k, param_v = param, true;
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46 end
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47 end
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48 param_k = param_k:gsub("%-", "_");
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49 end
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50 if array_params[param] then
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51 if parsed_opts[param_k] then
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52 table.insert(parsed_opts[param_k], param_v);
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53 else
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54 parsed_opts[param_k] = { param_v };
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55 end
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56 else
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57 parsed_opts[param_k] = param_v;
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58 end
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59 end
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60 for i = 1, #arg do
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61 parsed_opts[i] = arg[i];
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62 end
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63 return parsed_opts;
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64 end
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65
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66 return {
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67 parse = parse;
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68 }