prosody
63be85693710
util/datamanager.lua

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

Software / code / prosody

Annotate

util/datamanager.lua @ 421:63be85693710

Modules now sending disco replies
author Waqas Hussain <waqas20@gmail.com>
date Wed, 26 Nov 2008 08:27:09 +0500
parent 267:6303b7454ad0
child 452:613c5c6bdce4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
1 local format = string.format;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
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: 206
diff changeset
3 local pairs, ipairs = pairs, ipairs;
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
4 local char = string.char;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
5 local loadfile, setfenv, pcall = loadfile, setfenv, pcall;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
6 local log = log;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
7 local io_open = io.open;
206
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
8 local os_remove = os.remove;
267
6303b7454ad0 Some bugs fixed
Waqas Hussain <waqas20@gmail.com>
parents: 247
diff changeset
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;
206
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: 206
diff changeset
12 local t_insert = table.insert;
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
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
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
20 module "datamanager"
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
21
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
22
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
23 ---- utils -----
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
24 local encode, decode;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
25
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
26 local log = function (type, msg) return log(type, "datamanager", msg); end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
27
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
28 do
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
29 local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end });
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
30
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
31 decode = function (s)
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
32 return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes));
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
33 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
34
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
35 encode = function (s)
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
36 return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end));
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
37 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
38 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
39
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
40 local function basicSerialize (o)
182
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
41 if type(o) == "number" or type(o) == "boolean" then
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
42 return tostring(o);
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
43 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
44 return (format("%q", tostring(o)):gsub("\\\n", "\\n"));
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
45 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
46 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
47
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
48
182
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
49 local function simplesave (f, o, ind)
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
50 if type(o) == "number" then
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
51 f:write(o)
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
52 elseif type(o) == "string" then
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
53 f:write((format("%q", o):gsub("\\\n", "\\n")))
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
54 elseif type(o) == "table" then
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
55 f:write("{\n")
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
56 for k,v in pairs(o) do
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
57 indent(f, ind);
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
58 f:write("[", basicSerialize(k), "] = ")
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
59 simplesave(f, v, ind+1)
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
60 f:write(",\n")
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
61 end
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
62 indent(f, ind-1);
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
63 f:write("}")
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
64 elseif type(o) == "boolean" then
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
65 f:write(o and "true" or "false");
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
66 else
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
67 error("cannot serialize a " .. type(o))
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
68 end
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
69 end
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
70
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
71 ------- API -------------
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
72
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: 206
diff changeset
73 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: 206
diff changeset
74 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
75 if username then
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: 206
diff changeset
76 return format("data/%s/%s/%s.%s", 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
77 elseif host then
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: 206
diff changeset
78 return format("data/%s/%s.%s", 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
79 else
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: 206
diff changeset
80 return format("data/%s.%s", 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
81 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
82 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
83
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
84 function load(username, host, datastore)
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
85 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
86 if not data then
182
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
87 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
88 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
89 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
90 setfenv(data, {});
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
91 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
92 if not success then
182
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
93 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
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
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
96 return ret;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
97 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
98
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
99 function store(username, host, datastore, data)
206
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
100 if not data then
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
101 data = {};
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
102 end
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
103 -- save the datastore
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
104 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
105 if not f then
182
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
106 log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil"));
206
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
107 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
108 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
109 f:write("return ");
182
f5cb6b5a6eb7 Datamanager Fixes and improvements
Waqas Hussain <waqas20@gmail.com>
parents: 177
diff changeset
110 simplesave(f, data, 1);
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
111 f:close();
206
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
112 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
113 os_remove(getpath(username, host, datastore));
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
114 end
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
115 -- 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
116 -- platform independent way of checking for non-exisitng files
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
117 return true;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
118 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
119
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: 206
diff changeset
120 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: 206
diff changeset
121 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: 206
diff changeset
122 -- 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: 206
diff changeset
123 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: 206
diff changeset
124 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: 206
diff changeset
125 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: 206
diff changeset
126 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: 206
diff changeset
127 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: 206
diff changeset
128 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: 206
diff changeset
129 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: 206
diff changeset
130 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: 206
diff changeset
131 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: 206
diff changeset
132 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: 206
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: 206
diff changeset
134
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: 206
diff changeset
135 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: 206
diff changeset
136 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: 206
diff changeset
137 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: 206
diff changeset
138 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: 206
diff changeset
139 -- 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: 206
diff changeset
140 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: 206
diff changeset
141 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: 206
diff changeset
142 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: 206
diff changeset
143 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: 206
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: 206
diff changeset
145 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: 206
diff changeset
146 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: 206
diff changeset
147 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: 206
diff changeset
148 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: 206
diff changeset
149 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: 206
diff changeset
150 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: 206
diff changeset
151 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: 206
diff changeset
152 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: 206
diff changeset
153 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: 206
diff changeset
154 -- 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: 206
diff changeset
155 -- 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: 206
diff changeset
156 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: 206
diff changeset
157 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: 206
diff changeset
158
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: 206
diff changeset
159 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: 206
diff changeset
160 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: 206
diff changeset
161 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: 206
diff changeset
162 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: 206
diff changeset
163 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: 206
diff changeset
164 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: 206
diff changeset
165 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: 206
diff changeset
166 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: 206
diff changeset
167 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: 206
diff changeset
168 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: 206
diff changeset
169 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: 206
diff changeset
170 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: 206
diff changeset
171 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: 206
diff changeset
172 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: 206
diff changeset
173 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: 206
diff changeset
174
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: 206
diff changeset
175 return _M;