--------------------------------------------------- -- Licensed under the GNU General Public License v2 -- * (c) 2013, NormalRa --------------------------------------------------- -- {{{ Grab environment local tonumber = tonumber local io = { popen = io.popen } local setmetatable = setmetatable local string = { match = string.match } local math = { ceil = math.ceil, floor = math.floor } -- }}} -- Openweather: provides weather information for a requested station -- vicious.widgets.openweather local openweather_all = {} -- Initialize function tables local _wdirs = { "N", "NE", "E", "SE", "S", "SW", "W", "NW", "N" } local _wdata = { ["{city}"] = "N/A", ["{wind deg}"] = "N/A", ["{wind aim}"] = "N/A", ["{wind mps}"] = "N/A", ["{wind kmh}"] = "N/A", ["{sky}"] = "N/A", ["{weather}"] = "N/A", ["{temp c}"] = "N/A", ["{humid}"] = "N/A", ["{press}"] = "N/A" } -- {{{ Openweather widget type local function worker(format, warg) if not warg then return end -- Get weather forceast using the city ID code, from: -- * OpenWeatherMap.org local openweather = "http://api.openweathermap.org/data/2.5/weather?id="..warg.."&mode=json&units=metric" local f = io.popen("curl --connect-timeout 1 -fsm 3 '"..openweather.."'") local ws = f:read("*all") f:close() -- Check if there was a timeout or a problem with the station if ws == nil then return _wdata end _wdata["{city}"] = -- City name string.match(ws, '"name":"([%a%s%-]+)"') or _wdata["{city}"] _wdata["{wind deg}"] = -- Wind degrees string.match(ws, '"deg":([%d]+)') or _wdata["{wind deg}"] _wdata["{wind mps}"] = -- Wind speed in meters per second string.match(ws, '"speed":([%d%.]+)') or _wdata["{wind mps}"] _wdata["{sky}"] = -- Sky conditions string.match(ws, '"main":"([%a]+)"') or _wdata["{sky}"] _wdata["{weather}"] = -- Weather description string.match(ws, '"description":"([%a%s]+)"') or _wdata["{weather}"] _wdata["{temp c}"] = -- Temperature in celsius string.match(ws, '"temp":([%-]?[%d%.]+)') or _wdata["{temp c}"] _wdata["{humid}"] = -- Relative humidity in percent string.match(ws, '"humidity":([%d]+)') or _wdata["{humid}"] _wdata["{press}"] = -- Pressure in hPa string.match(ws, '"pressure":([%d%.]+)') or _wdata["{press}"] -- Wind speed in km/h if _wdata["{wind mps}"] ~= "N/A" then _wdata["{wind mps}"] = math.floor(tonumber(_wdata["{wind mps}"]) + .5) _wdata["{wind kmh}"] = math.ceil(_wdata["{wind mps}"] * 3.6) end -- Temperature in °C if _wdata["{temp c}"] ~= "N/A" then _wdata["{temp c}"] = math.floor(tonumber(_wdata["{temp c}"]) + .5) end -- Calculate wind direction if _wdata["{wind deg}"] ~= "N/A" then _wdata["{wind deg}"] = tonumber(_wdata["{wind deg}"]) -- Lua tables start at [1] if (_wdata["{wind deg}"] / 45)%1 == 0 then _wdata["{wind aim}"] = _wdirs[_wdata["{wind deg}"] / 45 + 1] else _wdata["{wind aim}"] = _wdirs[math.ceil(_wdata["{wind deg}"] / 45) + 1].. _wdirs[math.floor(_wdata["{wind deg}"] / 45) + 1] end end return _wdata end -- }}} return setmetatable(openweather_all, { __call = function(_, ...) return worker(...) end })