Fri, 28 Nov 2008 20:17:20 +0500
Added option core.data_path
0 | 1 | local format = string.format; |
2 | local setmetatable, type = setmetatable, type; | |
247
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
3 | local pairs, ipairs = pairs, ipairs; |
0 | 4 | local char = string.char; |
5 | local loadfile, setfenv, pcall = loadfile, setfenv, pcall; | |
6 | local log = log; | |
7 | local io_open = io.open; | |
205
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
8 | local os_remove = os.remove; |
267 | 9 | local tostring, tonumber = tostring, tonumber; |
177
606c433955e7
Bug fixes and checks for presence subscriptions, etc
Waqas Hussain <waqas20@gmail.com>
parents:
129
diff
changeset
|
10 | local error = error; |
205
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
11 | local next = next; |
247
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
12 | local t_insert = table.insert; |
0 | 13 | |
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
14 | local indent = function(f, i) |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
15 | for n = 1, i do |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
16 | f:write("\t"); |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
17 | end |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
18 | end |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
19 | |
452
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
20 | local data_path = "data"; |
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
21 | |
0 | 22 | module "datamanager" |
23 | ||
24 | ||
25 | ---- utils ----- | |
26 | local encode, decode; | |
27 | ||
28 | local log = function (type, msg) return log(type, "datamanager", msg); end | |
29 | ||
30 | do | |
31 | local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end }); | |
32 | ||
33 | decode = function (s) | |
34 | return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); | |
35 | end | |
36 | ||
37 | encode = function (s) | |
38 | return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end)); | |
39 | end | |
40 | end | |
41 | ||
42 | local function basicSerialize (o) | |
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
43 | if type(o) == "number" or type(o) == "boolean" then |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
44 | return tostring(o); |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
45 | else -- assume it is a string -- FIXME make sure it's a string. throw an error otherwise. |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
46 | return (format("%q", tostring(o)):gsub("\\\n", "\\n")); |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
47 | end |
0 | 48 | end |
49 | ||
50 | ||
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
51 | local function simplesave (f, o, ind) |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
52 | if type(o) == "number" then |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
53 | f:write(o) |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
54 | elseif type(o) == "string" then |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
55 | f:write((format("%q", o):gsub("\\\n", "\\n"))) |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
56 | elseif type(o) == "table" then |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
57 | f:write("{\n") |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
58 | for k,v in pairs(o) do |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
59 | indent(f, ind); |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
60 | f:write("[", basicSerialize(k), "] = ") |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
61 | simplesave(f, v, ind+1) |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
62 | f:write(",\n") |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
63 | end |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
64 | indent(f, ind-1); |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
65 | f:write("}") |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
66 | elseif type(o) == "boolean" then |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
67 | f:write(o and "true" or "false"); |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
68 | else |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
69 | error("cannot serialize a " .. type(o)) |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
70 | end |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
71 | end |
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
72 | |
0 | 73 | ------- API ------------- |
74 | ||
452
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
75 | function set_data_path(path) |
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
76 | data_path = path; |
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
77 | end |
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
78 | |
247
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
79 | function getpath(username, host, datastore, ext) |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
80 | ext = ext or "dat"; |
84
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
81 | if username then |
452
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
82 | return format("%s/%s/%s/%s.%s", data_path, encode(host), datastore, encode(username), ext); |
84
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
83 | elseif host then |
452
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
84 | return format("%s/%s/%s.%s", data_path, encode(host), datastore, ext); |
84
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
85 | else |
452
613c5c6bdce4
Added option core.data_path
Waqas Hussain <waqas20@gmail.com>
parents:
267
diff
changeset
|
86 | return format("%s/%s.%s", data_path, datastore, ext); |
84
d0a0bac6815e
Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents:
0
diff
changeset
|
87 | end |
0 | 88 | end |
89 | ||
90 | function load(username, host, datastore) | |
91 | local data, ret = loadfile(getpath(username, host, datastore)); | |
117
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
92 | if not data then |
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
93 | log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
117
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
94 | return nil; |
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
95 | end |
0 | 96 | setfenv(data, {}); |
97 | local success, ret = pcall(data); | |
117
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
98 | if not success then |
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
99 | log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
117
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
100 | return nil; |
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
101 | end |
0 | 102 | return ret; |
103 | end | |
104 | ||
105 | function store(username, host, datastore, data) | |
205
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
106 | if not data then |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
107 | data = {}; |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
108 | end |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
109 | -- save the datastore |
0 | 110 | local f, msg = io_open(getpath(username, host, datastore), "w+"); |
117
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
111 | if not f then |
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
112 | log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
205
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
113 | return; |
117
8e5c5e6a3240
Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents:
88
diff
changeset
|
114 | end |
0 | 115 | f:write("return "); |
182
f5cb6b5a6eb7
Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents:
177
diff
changeset
|
116 | simplesave(f, data, 1); |
0 | 117 | f:close(); |
205
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
118 | if not next(data) then -- try to delete empty datastore |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
119 | os_remove(getpath(username, host, datastore)); |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
120 | end |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
121 | -- we write data even when we are deleting because lua doesn't have a |
e30d0e30a0ff
Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents:
182
diff
changeset
|
122 | -- platform independent way of checking for non-exisitng files |
0 | 123 | return true; |
124 | end | |
125 | ||
247
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
126 | function list_append(username, host, datastore, data) |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
127 | if not data then return; end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
128 | -- save the datastore |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
129 | local f, msg = io_open(getpath(username, host, datastore, "list"), "a+"); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
130 | if not f then |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
131 | log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
132 | return; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
133 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
134 | f:write("item("); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
135 | simplesave(f, data, 1); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
136 | f:write(");\n"); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
137 | f:close(); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
138 | return true; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
139 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
140 | |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
141 | function list_store(username, host, datastore, data) |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
142 | if not data then |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
143 | data = {}; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
144 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
145 | -- save the datastore |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
146 | local f, msg = io_open(getpath(username, host, datastore, "list"), "w+"); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
147 | if not f then |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
148 | log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
149 | return; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
150 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
151 | for _, d in ipairs(data) do |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
152 | f:write("item("); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
153 | simplesave(f, d, 1); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
154 | f:write(");\n"); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
155 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
156 | f:close(); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
157 | if not next(data) then -- try to delete empty datastore |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
158 | os_remove(getpath(username, host, datastore, "list")); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
159 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
160 | -- we write data even when we are deleting because lua doesn't have a |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
161 | -- platform independent way of checking for non-exisitng files |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
162 | return true; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
163 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
164 | |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
165 | function list_load(username, host, datastore) |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
166 | local data, ret = loadfile(getpath(username, host, datastore, "list")); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
167 | if not data then |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
168 | log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
169 | return nil; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
170 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
171 | local items = {}; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
172 | setfenv(data, {item = function(i) t_insert(items, i); end}); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
173 | local success, ret = pcall(data); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
174 | if not success then |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
175 | log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
176 | return nil; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
177 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
178 | return items; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
179 | end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
180 | |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents:
205
diff
changeset
|
181 | return _M; |