author | Matthew Wild <mwild1@gmail.com> |
Wed, 10 Dec 2008 15:44:03 +0000 | |
changeset 615 | 4ae3e81513f3 |
parent 574 | 5963b780775d |
child 628 | 3712d36b6d25 |
permissions | -rw-r--r-- |
615 | 1 |
-- Prosody IM v0.2 |
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-- Copyright (C) 2008 Matthew Wild |
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-- Copyright (C) 2008 Waqas Hussain |
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-- |
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-- This program is free software; you can redistribute it and/or |
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-- modify it under the terms of the GNU General Public License |
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-- as published by the Free Software Foundation; either version 2 |
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-- of the License, or (at your option) any later version. |
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-- |
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-- This program is distributed in the hope that it will be useful, |
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of |
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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-- GNU General Public License for more details. |
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-- |
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-- You should have received a copy of the GNU General Public License |
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-- along with this program; if not, write to the Free Software |
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-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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-- |
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0 | 21 |
local format = string.format; |
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local setmetatable, type = setmetatable, type; |
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local pairs, ipairs = pairs, ipairs; |
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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 = require "util.logger".init("datamanager"); |
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local io_open = io.open; |
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local os_remove = os.remove; |
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local tostring, tonumber = tostring, tonumber; |
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local error = error; |
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local next = next; |
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local t_insert = table.insert; |
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local append = require "util.serialization".append; |
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module "datamanager" |
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---- utils ----- |
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local encode, decode; |
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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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------- API ------------- |
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local data_path = "data"; |
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function set_data_path(path) |
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log("info", "Setting data path to %s", path); |
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data_path = path; |
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end |
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function getpath(username, host, datastore, ext) |
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ext = ext or "dat"; |
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if username then |
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return format("%s/%s/%s/%s.%s", data_path, encode(host), datastore, encode(username), ext); |
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elseif host then |
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return format("%s/%s/%s.%s", data_path, encode(host), datastore, ext); |
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else |
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return format("%s/%s.%s", data_path, datastore, ext); |
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end |
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end |
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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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if not data then |
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log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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return nil; |
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end |
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setfenv(data, {}); |
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local success, ret = pcall(data); |
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if not success then |
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log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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return nil; |
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end |
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return ret; |
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end |
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function store(username, host, datastore, data) |
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if not data then |
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data = {}; |
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end |
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-- save the datastore |
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local f, msg = io_open(getpath(username, host, datastore), "w+"); |
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if not f then |
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log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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return; |
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end |
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f:write("return "); |
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append(f, data); |
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f:close(); |
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if not next(data) then -- try to delete empty datastore |
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os_remove(getpath(username, host, datastore)); |
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end |
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-- we write data even when we are deleting because lua doesn't have a |
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-- platform independent way of checking for non-exisitng files |
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return true; |
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end |
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||
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function list_append(username, host, datastore, data) |
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if not data then return; end |
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-- save the datastore |
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local f, msg = io_open(getpath(username, host, datastore, "list"), "a+"); |
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if not f then |
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log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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return; |
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113 |
end |
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f:write("item("); |
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append(f, data); |
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f:write(");\n"); |
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f:close(); |
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return true; |
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119 |
end |
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120 |
|
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function list_store(username, host, datastore, data) |
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if not data then |
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123 |
data = {}; |
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124 |
end |
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125 |
-- save the datastore |
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126 |
local f, msg = io_open(getpath(username, host, datastore, "list"), "w+"); |
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if not f then |
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128 |
log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); |
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129 |
return; |
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130 |
end |
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for _, d in ipairs(data) do |
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132 |
f:write("item("); |
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133 |
append(f, d); |
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134 |
f:write(");\n"); |
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135 |
end |
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|
136 |
f:close(); |
681b29aa134f
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137 |
if not next(data) then -- try to delete empty datastore |
681b29aa134f
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138 |
os_remove(getpath(username, host, datastore, "list")); |
681b29aa134f
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139 |
end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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140 |
-- we write data even when we are deleting because lua doesn't have a |
681b29aa134f
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141 |
-- 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)
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|
142 |
return true; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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|
143 |
end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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144 |
|
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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145 |
function list_load(username, host, datastore) |
681b29aa134f
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146 |
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)
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parents:
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|
147 |
if not data then |
681b29aa134f
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parents:
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148 |
log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
681b29aa134f
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149 |
return nil; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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|
150 |
end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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151 |
local items = {}; |
681b29aa134f
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152 |
setfenv(data, {item = function(i) t_insert(items, i); end}); |
681b29aa134f
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|
153 |
local success, ret = pcall(data); |
681b29aa134f
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154 |
if not success then |
681b29aa134f
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parents:
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|
155 |
log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); |
681b29aa134f
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|
156 |
return nil; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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|
157 |
end |
681b29aa134f
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|
158 |
return items; |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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parents:
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|
159 |
end |
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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parents:
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|
160 |
|
681b29aa134f
Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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|
161 |
return _M; |