Software /
code /
prosody
File
util/datamanager.lua @ 608:3758af511ce8
Don't try processing stanzas not of type get or set in module manager
author | Waqas Hussain <waqas20@gmail.com> |
---|---|
date | Mon, 08 Dec 2008 21:06:41 +0500 |
parent | 574:5963b780775d |
child | 615:4ae3e81513f3 |
line wrap: on
line source
-- Prosody IM v0.1 -- Copyright (C) 2008 Matthew Wild -- Copyright (C) 2008 Waqas Hussain -- -- This program is free software; you can redistribute it and/or -- modify it under the terms of the GNU General Public License -- as published by the Free Software Foundation; either version 2 -- of the License, or (at your option) any later version. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU General Public License for more details. -- -- You should have received a copy of the GNU General Public License -- along with this program; if not, write to the Free Software -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -- local format = string.format; local setmetatable, type = setmetatable, type; local pairs, ipairs = pairs, ipairs; local char = string.char; local loadfile, setfenv, pcall = loadfile, setfenv, pcall; local log = require "util.logger".init("datamanager"); local io_open = io.open; local os_remove = os.remove; local tostring, tonumber = tostring, tonumber; local error = error; local next = next; local t_insert = table.insert; local append = require "util.serialization".append; module "datamanager" ---- utils ----- local encode, decode; do local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end }); decode = function (s) return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); end encode = function (s) return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end)); end end ------- API ------------- local data_path = "data"; function set_data_path(path) log("info", "Setting data path to %s", path); data_path = path; end function getpath(username, host, datastore, ext) ext = ext or "dat"; if username then return format("%s/%s/%s/%s.%s", data_path, encode(host), datastore, encode(username), ext); elseif host then return format("%s/%s/%s.%s", data_path, encode(host), datastore, ext); else return format("%s/%s.%s", data_path, datastore, ext); end end function load(username, host, datastore) local data, ret = loadfile(getpath(username, host, datastore)); if not data then log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); return nil; end setfenv(data, {}); local success, ret = pcall(data); if not success then log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); return nil; end return ret; end function store(username, host, datastore, data) if not data then data = {}; end -- save the datastore local f, msg = io_open(getpath(username, host, datastore), "w+"); if not f then log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); return; end f:write("return "); append(f, data); f:close(); if not next(data) then -- try to delete empty datastore os_remove(getpath(username, host, datastore)); end -- we write data even when we are deleting because lua doesn't have a -- platform independent way of checking for non-exisitng files return true; end function list_append(username, host, datastore, data) if not data then return; end -- save the datastore local f, msg = io_open(getpath(username, host, datastore, "list"), "a+"); if not f then log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); return; end f:write("item("); append(f, data); f:write(");\n"); f:close(); return true; end function list_store(username, host, datastore, data) if not data then data = {}; end -- save the datastore local f, msg = io_open(getpath(username, host, datastore, "list"), "w+"); if not f then log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil")); return; end for _, d in ipairs(data) do f:write("item("); append(f, d); f:write(");\n"); end f:close(); if not next(data) then -- try to delete empty datastore os_remove(getpath(username, host, datastore, "list")); end -- we write data even when we are deleting because lua doesn't have a -- platform independent way of checking for non-exisitng files return true; end function list_load(username, host, datastore) local data, ret = loadfile(getpath(username, host, datastore, "list")); if not data then log("warn", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); return nil; end local items = {}; setfenv(data, {item = function(i) t_insert(items, i); end}); local success, ret = pcall(data); if not success then log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); return nil; end return items; end return _M;