Tue, 14 Oct 2008 09:54:49 +0500
Fixed: util/jid.lua now returns module object
0 | 1 | local format = string.format; |
2 | local setmetatable, type = setmetatable, type; | |
3 | local pairs = pairs; | |
4 | local char = string.char; | |
5 | local loadfile, setfenv, pcall = loadfile, setfenv, pcall; | |
6 | local log = log; | |
7 | local io_open = io.open; | |
88 | 8 | local tostring = tostring; |
0 | 9 | |
10 | module "datamanager" | |
11 | ||
12 | ||
13 | ---- utils ----- | |
14 | local encode, decode; | |
15 | ||
16 | local log = function (type, msg) return log(type, "datamanager", msg); end | |
17 | ||
18 | do | |
19 | local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end }); | |
20 | ||
21 | decode = function (s) | |
22 | return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); | |
23 | end | |
24 | ||
25 | encode = function (s) | |
26 | return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end)); | |
27 | end | |
28 | end | |
29 | ||
30 | local function basicSerialize (o) | |
31 | if type(o) == "number" or type(o) == "boolean" then | |
32 | return tostring(o) | |
33 | else -- assume it is a string | |
88 | 34 | return format("%q", tostring(o)) |
0 | 35 | end |
36 | end | |
37 | ||
38 | ||
39 | local function simplesave (f, o) | |
40 | if type(o) == "number" then | |
41 | f:write(o) | |
42 | elseif type(o) == "string" then | |
43 | f:write(format("%q", o)) | |
44 | elseif type(o) == "table" then | |
45 | f:write("{\n") | |
46 | for k,v in pairs(o) do | |
82
cbf387f29d56
Fix for saving tables with non-string keys
Matthew Wild <mwild1@gmail.com>
parents:
0
diff
changeset
|
47 | f:write(" [", basicSerialize(k), "] = ") |
0 | 48 | simplesave(f, v) |
49 | f:write(",\n") | |
50 | end | |
51 | f:write("}\n") | |
52 | else | |
53 | error("cannot serialize a " .. type(o)) | |
54 | end | |
55 | end | |
56 | ||
57 | ------- API ------------- | |
58 | ||
59 | function getpath(username, host, datastore) | |
84
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
60 | if username then |
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
61 | return format("data/%s/%s/%s.dat", encode(host), datastore, encode(username)); |
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
62 | elseif host then |
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
63 | return format("data/%s/%s.dat", encode(host), datastore); |
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
64 | else |
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
65 | return format("data/%s.dat", datastore); |
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
66 | end |
0 | 67 | end |
68 | ||
69 | function load(username, host, datastore) | |
70 | local data, ret = loadfile(getpath(username, host, datastore)); | |
71 | if not data then log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..username.."@"..host); return nil; end | |
72 | setfenv(data, {}); | |
73 | local success, ret = pcall(data); | |
74 | if not success then log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..username.."@"..host); return nil; end | |
75 | return ret; | |
76 | end | |
77 | ||
78 | function store(username, host, datastore, data) | |
79 | local f, msg = io_open(getpath(username, host, datastore), "w+"); | |
80 | if not f then log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..username.."@"..host); return nil; end | |
81 | f:write("return "); | |
82 | simplesave(f, data); | |
83 | f:close(); | |
84 | return true; | |
85 | end | |
86 |