author | Waqas Hussain <waqas20@gmail.com> |
Thu, 23 Oct 2008 02:49:43 +0500 | |
changeset 117 | 8e5c5e6a3240 |
parent 88 | 023320150c65 |
child 129 | 0f119bece309 |
permissions | -rw-r--r-- |
0 | 1 |
local format = string.format; |
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local setmetatable, type = setmetatable, type; |
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local pairs = pairs; |
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local char = string.char; |
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local loadfile, setfenv, pcall = loadfile, setfenv, pcall; |
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local log = log; |
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local io_open = io.open; |
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local tostring = tostring; |
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module "datamanager" |
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---- utils ----- |
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local encode, decode; |
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local log = function (type, msg) return log(type, "datamanager", msg); end |
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do |
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local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end }); |
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decode = function (s) |
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return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); |
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end |
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encode = function (s) |
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return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end)); |
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end |
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end |
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local function basicSerialize (o) |
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if type(o) == "number" or type(o) == "boolean" then |
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return tostring(o) |
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else -- assume it is a string |
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return format("%q", tostring(o)) |
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end |
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end |
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local function simplesave (f, o) |
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if type(o) == "number" then |
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f:write(o) |
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elseif type(o) == "string" then |
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f:write(format("%q", o)) |
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elseif type(o) == "table" then |
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f:write("{\n") |
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for k,v in pairs(o) do |
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82
cbf387f29d56
Fix for saving tables with non-string keys
Matthew Wild <mwild1@gmail.com>
parents:
0
diff
changeset
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f:write(" [", basicSerialize(k), "] = ") |
0 | 48 |
simplesave(f, v) |
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f:write(",\n") |
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end |
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f:write("}\n") |
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else |
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error("cannot serialize a " .. type(o)) |
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end |
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end |
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------- API ------------- |
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function getpath(username, host, datastore) |
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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 |
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function load(username, host, datastore) |
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local data, ret = loadfile(getpath(username, host, datastore)); |
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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
|
71 |
if not data then |
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
|
72 |
log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or nil).."@"..(host or 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
|
73 |
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
|
74 |
end |
0 | 75 |
setfenv(data, {}); |
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local success, ret = pcall(data); |
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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
|
77 |
if not success then |
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
|
78 |
log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or nil).."@"..(host or 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
|
79 |
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
|
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end |
0 | 81 |
return ret; |
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end |
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function store(username, host, datastore, data) |
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local f, msg = io_open(getpath(username, host, datastore), "w+"); |
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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 f then |
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
|
87 |
log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or nil).."@"..(host or 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
|
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
|
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end |
0 | 90 |
f:write("return "); |
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simplesave(f, data); |
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f:close(); |
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return true; |
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end |
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