+-- Prosody IM v0.2
+-- 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 = pairs;
+local pairs, ipairs = pairs, ipairs;
local char = string.char;
local loadfile, setfenv, pcall = loadfile, setfenv, pcall;
-local log = log;
+local log = require "util.logger".init("datamanager");
local io_open = io.open;
-local tostring = tostring;
+local os_remove = os.remove;
+local tostring, tonumber = tostring, tonumber;
local error = error;
-
-local indent = function(f, i)
- for n = 1, i do
- f:write("\t");
- end
-end
+local next = next;
+local t_insert = table.insert;
+local append = require "util.serialization".append;
module "datamanager"
-
---- utils -----
local encode, decode;
-
-local log = function (type, msg) return log(type, "datamanager", msg); end
-
do
local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end });
end
encode = function (s)
- return s and (s:gsub("%W", function (c) return format("%%%x", c:byte()); end));
- end
-end
-
-local function basicSerialize (o)
- if type(o) == "number" or type(o) == "boolean" then
- return tostring(o);
- else -- assume it is a string -- FIXME make sure it's a string. throw an error otherwise.
- return (format("%q", tostring(o)):gsub("\\\n", "\\n"));
+ return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end));
end
end
+------- API -------------
-local function simplesave (f, o, ind)
- if type(o) == "number" then
- f:write(o)
- elseif type(o) == "string" then
- f:write((format("%q", o):gsub("\\\n", "\\n")))
- elseif type(o) == "table" then
- f:write("{\n")
- for k,v in pairs(o) do
- indent(f, ind);
- f:write("[", basicSerialize(k), "] = ")
- simplesave(f, v, ind+1)
- f:write(",\n")
- end
- indent(f, ind-1);
- f:write("}")
- elseif type(o) == "boolean" then
- f:write(o and "true" or "false");
- else
- error("cannot serialize a " .. type(o))
- end
+local data_path = "data";
+function set_data_path(path)
+ log("info", "Setting data path to %s", path);
+ data_path = path;
end
-------- API -------------
-
-function getpath(username, host, datastore)
+function getpath(username, host, datastore, ext)
+ ext = ext or "dat";
if username then
- return format("data/%s/%s/%s.dat", encode(host), datastore, encode(username));
+ return format("%s/%s/%s/%s.%s", data_path, encode(host), datastore, encode(username), ext);
elseif host then
- return format("data/%s/%s.dat", encode(host), datastore);
+ return format("%s/%s/%s.%s", data_path, encode(host), datastore, ext);
else
- return format("data/%s.dat", datastore);
+ return format("%s/%s.%s", data_path, datastore, ext);
end
end
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 nil;
+ return;
end
f:write("return ");
- simplesave(f, data, 1);
+ 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
-return _M;
\ No newline at end of file
+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;
projects / prosody.git / blobdiff