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
|
#!/usr/bin/env lua
--
-- xB seen plugin
--
-- Copyright 2016 Přemysl Eric Janouch <p@janouch.name>
-- See the file LICENSE for licensing information.
--
function parse (line)
local msg = { params = {} }
line = line:match ("[^\r]*")
for start, word in line:gmatch ("()([^ ]+)") do
local colon = word:match ("^:(.*)")
if start == 1 and colon then
msg.prefix = colon
elseif not msg.command then
msg.command = word
elseif colon then
table.insert (msg.params, line:sub (start + 1))
break
elseif start ~= #line then
table.insert (msg.params, word)
end
end
return msg
end
function get_config (name)
io.write ("ZYKLONB get_config :", name, "\r\n")
return parse (io.read ()).params[1]
end
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
io.output ():setvbuf ('line')
local prefix = get_config ('prefix')
io.write ("ZYKLONB register\r\n")
local db = {}
local db_filename = "seen.db"
local db_garbage = 0
function remember (who, where, when, what)
if not db[who] then db[who] = {} end
if db[who][where] then db_garbage = db_garbage + 1 end
db[who][where] = { tonumber (when), what }
end
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
local db_file, e = io.open (db_filename, "a+")
if not db_file then error ("cannot open database: " .. e, 0) end
function db_store (who, where, when, what)
db_file:write (string.format
(":%s %s %s %s :%s\n", who, "PRIVMSG", where, when, what))
end
function db_compact ()
db_file:close ()
-- Unfortunately, default Lua doesn't have anything like mkstemp()
local db_tmpname = db_filename .. "." .. os.time ()
db_file, e = io.open (db_tmpname, "a+")
if not db_file then error ("cannot save database: " .. e, 0) end
for who, places in pairs (db) do
for where, data in pairs (places) do
db_store (who, where, data[1], data[2])
end
end
db_file:flush ()
local ok, e = os.rename (db_tmpname, db_filename)
if not ok then error ("cannot save database: " .. e, 0) end
db_garbage = 0
end
for line in db_file:lines () do
local msg = parse (line)
remember (msg.prefix, table.unpack (msg.params))
end
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
function seen (who, where, args)
local respond = function (...)
local privmsg = function (target, ...)
io.write ("PRIVMSG ", target, " :", table.concat { ... }, "\r\n")
end
if where:match ("^[#&!+]") then
privmsg (where, who, ": ", ...)
else
privmsg (who, ...)
end
end
local whom, e, garbage = args:match ("^(%S+)()%s*(.*)")
if not whom or #garbage ~= 0 then
return respond ("usage: <name>")
elseif who:lower () == whom:lower () then
return respond ("I can see you right now.")
end
local top = {}
-- That is, * acts like a wildcard, otherwise everything is escaped
local pattern = "^" .. whom:gsub ("[%^%$%(%)%%%.%[%]%+%-%?]", "%%%0")
:gsub ("%*", ".*"):lower () .. "$"
for name, places in pairs (db) do
if places[where] and name:lower ():match (pattern) then
local when, what = table.unpack (places[where])
table.insert (top, { name = name, when = when, what = what })
end
end
if #top == 0 then
return respond ("I have not seen \x02" .. whom .. "\x02 here.")
end
-- Get all matching nicknames ordered from the most recently active
-- and make the list case insensitive (remove older duplicates)
table.sort (top, function (a, b) return a.when > b.when end)
for i = #top, 2, -1 do
if top[i - 1].name:lower () == top[i].name:lower () then
table.remove (top, i)
end
end
-- Hopefully the formatting mess will disrupt highlights in clients
for i = 1, math.min (#top, 3) do
local name = top[i].name:gsub ("^.", "%0\x02\x02")
respond (string.format ("\x02%s\x02 -> %s -> %s",
name, os.date ("%c", top[i].when), top[i].what))
end
end
function handle (msg)
local who = msg.prefix:match ("^[^!@]*")
local where, what = table.unpack (msg.params)
local when = os.time ()
local what_log = what:gsub ("^\x01ACTION", "*"):gsub ("\x01$", "")
remember (who, where, when, what_log)
db_store (who, where, when, what_log)
-- Comment out to reduce both disk load and reliability
db_file:flush ()
if db_garbage > 5000 then db_compact () end
if what:sub (1, #prefix) == prefix then
local command = what:sub (#prefix + 1)
local name, e = command:match ("^(%S+)%s*()")
if name == 'seen' then seen (who, where, command:sub (e)) end
end
end
for line in io.lines () do
local msg = parse (line)
if msg.command == "PRIVMSG" then handle (msg) end
end
|
