prosody
6eb5d2bb11af
util/argparse.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/argparse.lua @ 10921:6eb5d2bb11af

util-src: Use the luaL_pushfail API added in Lua 5.4 to highlight all failure conditions Actually just an alias of pushnil, but it does make it more obvious where the failure conditions are, which is good for readability.
author Kim Alvefur <zash@zash.se>
date Sun, 07 Jun 2020 02:25:56 +0200
parent 10651:1196f1e8d178
child 10936:d770435f0f84
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
10651
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 local function parse(arg, config)
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 local short_params = config and config.short_params or {};
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 local value_params = config and config.value_params or {};
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 local parsed_opts = {};
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 if #arg == 0 then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 return parsed_opts;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10 while true do
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11 local raw_param = arg[1];
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 if not raw_param then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 break;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 local prefix = raw_param:match("^%-%-?");
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 if not prefix then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 break;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 elseif prefix == "--" and raw_param == "--" then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 table.remove(arg, 1);
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 break;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 local param = table.remove(arg, 1):sub(#prefix+1);
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 if #param == 1 and short_params then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 param = short_params[param];
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 if not param then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 print("Unknown command-line option: "..tostring(param));
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 print("Perhaps you meant to use prosodyctl instead?");
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 os.exit(1);
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34 local param_k, param_v;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35 if value_params[param] then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 param_k, param_v = param, table.remove(arg, 1);
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 if not param_v then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 print("Expected a value to follow command-line option: "..raw_param);
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 os.exit(1);
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 else
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42 param_k, param_v = param:match("^([^=]+)=(.+)$");
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 if not param_k then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 if param:match("^no%-") then
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45 param_k, param_v = param:sub(4), false;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46 else
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 param_k, param_v = param, true;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 parsed_opts[param_k] = param_v;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 return parsed_opts;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 end
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
55
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56 return {
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 parse = parse;
1196f1e8d178 util.startup: Break out command line argument parsing into util.argparse
Kim Alvefur <zash@zash.se>
parents:
diff changeset
58 }