1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
-- Minetest: builtin/common/chatcommands.lua
-- For server-side translations (if INIT == "game")
-- Otherwise, use core.gettext
local S = core.get_translator("__builtin")
core.registered_chatcommands = {}
-- Interpret the parameters of a command, separating options and arguments.
-- Input: command, param
-- command: name of command
-- param: parameters of command
-- Returns: opts, args
-- opts is a string of option letters, or false on error
-- args is an array with the non-option arguments in order, or an error message
-- Example: for this command line:
-- /command a b -cd e f -g
-- the function would receive:
-- a b -cd e f -g
-- and it would return:
-- "cdg", {"a", "b", "e", "f"}
-- Negative numbers are taken as arguments. Long options (--option) are
-- currently rejected as reserved.
local function getopts(command, param)
local opts = ""
local args = {}
for match in param:gmatch("%S+") do
if match:byte(1) == 45 then -- 45 = '-'
local second = match:byte(2)
if second == 45 then
return false, S("Invalid parameters (see /help @1).", command)
elseif second and (second < 48 or second > 57) then -- 48 = '0', 57 = '9'
opts = opts .. match:sub(2)
else
-- numeric, add it to args
args[#args + 1] = match
end
else
args[#args + 1] = match
end
end
return opts, args
end
function core.register_chatcommand(cmd, def)
def = def or {}
def.params = def.params or ""
def.description = def.description or ""
def.privs = def.privs or {}
def.mod_origin = core.get_current_modname() or "??"
core.registered_chatcommands[cmd] = def
end
function core.unregister_chatcommand(name)
if core.registered_chatcommands[name] then
core.registered_chatcommands[name] = nil
else
core.log("warning", "Not unregistering chatcommand " ..name..
" because it doesn't exist.")
end
end
function core.override_chatcommand(name, redefinition)
local chatcommand = core.registered_chatcommands[name]
assert(chatcommand, "Attempt to override non-existent chatcommand "..name)
for k, v in pairs(redefinition) do
rawset(chatcommand, k, v)
end
core.registered_chatcommands[name] = chatcommand
end
local function format_help_line(cmd, def)
local cmd_marker = INIT == "client" and "." or "/"
local msg = core.colorize("#00ffff", cmd_marker .. cmd)
if def.params and def.params ~= "" then
msg = msg .. " " .. def.params
end
if def.description and def.description ~= "" then
msg = msg .. ": " .. def.description
end
return msg
end
local function do_help_cmd(name, param)
local opts, args = getopts("help", param)
if not opts then
return false, args
end
if #args > 1 then
return false, S("Too many arguments, try using just /help <command>")
end
local use_gui = INIT ~= "client" and core.get_player_by_name(name)
use_gui = use_gui and not opts:find("t")
if #args == 0 and not use_gui then
local cmds = {}
for cmd, def in pairs(core.registered_chatcommands) do
if INIT == "client" or core.check_player_privs(name, def.privs) then
cmds[#cmds + 1] = cmd
end
end
table.sort(cmds)
local msg
if INIT == "game" then
msg = S("Available commands: @1",
table.concat(cmds, " ")) .. "\n"
.. S("Use '/help <cmd>' to get more "
.. "information, or '/help all' to list "
.. "everything.")
else
msg = core.gettext("Available commands: ")
.. table.concat(cmds, " ") .. "\n"
.. core.gettext("Use '.help <cmd>' to get more "
.. "information, or '.help all' to list "
.. "everything.")
end
return true, msg
elseif #args == 0 or (args[1] == "all" and use_gui) then
core.show_general_help_formspec(name)
return true
elseif args[1] == "all" then
local cmds = {}
for cmd, def in pairs(core.registered_chatcommands) do
if INIT == "client" or core.check_player_privs(name, def.privs) then
cmds[#cmds + 1] = format_help_line(cmd, def)
end
end
table.sort(cmds)
local msg
if INIT == "game" then
msg = S("Available commands:")
else
msg = core.gettext("Available commands:")
end
return true, msg.."\n"..table.concat(cmds, "\n")
elseif INIT == "game" and args[1] == "privs" then
if use_gui then
core.show_privs_help_formspec(name)
return true
end
local privs = {}
for priv, def in pairs(core.registered_privileges) do
privs[#privs + 1] = priv .. ": " .. def.description
end
table.sort(privs)
return true, S("Available privileges:").."\n"..table.concat(privs, "\n")
else
local cmd = args[1]
local def = core.registered_chatcommands[cmd]
if not def then
local msg
if INIT == "game" then
msg = S("Command not available: @1", cmd)
else
msg = core.gettext("Command not available: ") .. cmd
end
return false, msg
else
return true, format_help_line(cmd, def)
end
end
end
if INIT == "client" then
core.register_chatcommand("help", {
params = core.gettext("[all | <cmd>]"),
description = core.gettext("Get help for commands"),
func = function(param)
return do_help_cmd(nil, param)
end,
})
else
core.register_chatcommand("help", {
params = S("[all | privs | <cmd>] [-t]"),
description = S("Get help for commands or list privileges (-t: output in chat)"),
func = do_help_cmd,
})
end
|
