Sun, 26 Oct 2008 21:19:49 +0500
Combined some lines
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; |
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9 | local error = error; |
0 | 10 | |
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11 | local indent = function(f, i) |
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12 | for n = 1, i do |
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13 | f:write("\t"); |
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14 | end |
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15 | end |
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16 | |
0 | 17 | module "datamanager" |
18 | ||
19 | ||
20 | ---- utils ----- | |
21 | local encode, decode; | |
22 | ||
23 | local log = function (type, msg) return log(type, "datamanager", msg); end | |
24 | ||
25 | do | |
26 | local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end }); | |
27 | ||
28 | decode = function (s) | |
29 | return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); | |
30 | end | |
31 | ||
32 | encode = function (s) | |
33 | return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end)); | |
34 | end | |
35 | end | |
36 | ||
37 | local function basicSerialize (o) | |
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38 | if type(o) == "number" or type(o) == "boolean" then |
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39 | return tostring(o); |
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40 | else -- assume it is a string -- FIXME make sure it's a string. throw an error otherwise. |
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41 | return (format("%q", tostring(o)):gsub("\\\n", "\\n")); |
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42 | end |
0 | 43 | end |
44 | ||
45 | ||
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46 | local function simplesave (f, o, ind) |
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47 | if type(o) == "number" then |
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48 | f:write(o) |
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49 | elseif type(o) == "string" then |
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50 | f:write((format("%q", o):gsub("\\\n", "\\n"))) |
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51 | elseif type(o) == "table" then |
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52 | f:write("{\n") |
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53 | for k,v in pairs(o) do |
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54 | indent(f, ind); |
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55 | f:write("[", basicSerialize(k), "] = ") |
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56 | simplesave(f, v, ind+1) |
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57 | f:write(",\n") |
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58 | end |
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59 | indent(f, ind-1); |
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60 | f:write("}") |
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61 | elseif type(o) == "boolean" then |
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62 | f:write(o and "true" or "false"); |
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63 | else |
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64 | error("cannot serialize a " .. type(o)) |
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65 | end |
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66 | end |
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67 | |
0 | 68 | ------- API ------------- |
69 | ||
70 | function getpath(username, host, datastore) | |
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71 | if username then |
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72 | return format("data/%s/%s/%s.dat", encode(host), datastore, encode(username)); |
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73 | elseif host then |
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74 | return format("data/%s/%s.dat", encode(host), datastore); |
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75 | else |
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76 | return format("data/%s.dat", datastore); |
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77 | end |
0 | 78 | end |
79 | ||
80 | function load(username, host, datastore) | |
81 | local data, ret = loadfile(getpath(username, host, datastore)); | |
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82 | if not data then |
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83 | log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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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>
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84 | return nil; |
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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>
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85 | end |
0 | 86 | setfenv(data, {}); |
87 | local success, ret = pcall(data); | |
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88 | if not success then |
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89 | log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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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:
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90 | 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>
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91 | end |
0 | 92 | return ret; |
93 | end | |
94 | ||
95 | function store(username, host, datastore, data) | |
96 | local f, msg = io_open(getpath(username, host, datastore), "w+"); | |
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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:
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97 | if not f then |
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98 | log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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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
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99 | return nil; |
8e5c5e6a3240
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Waqas Hussain <waqas20@gmail.com>
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100 | end |
0 | 101 | f:write("return "); |
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102 | simplesave(f, data, 1); |
0 | 103 | f:close(); |
104 | return true; | |
105 | end | |
106 | ||
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107 | return _M; |