better weather module: OpenWeatherMap; #105

This commit is contained in:
luke bonham 2015-07-02 12:06:07 +02:00
parent eba28656f0
commit 8c5b64675d
60 changed files with 850 additions and 659 deletions

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-- How to use...
-- ...asynchronously:
-- asyncshell.request('wscript -Kiev', function(f) wwidget.text = f:read("*l") end)
-- ...synchronously
-- ...synchronously:
-- widget:set_text(asyncshell.demand('wscript -Kiev', 5):read("*l") or "Error")
-- This is more cpu demanding, but makes things faster.
local spawn = require('awful.util').spawn
asyncshell = {}

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[Plain Weather Icons](http://merlinthered.deviantart.com/art/plain-weather-icons-157162192), created by [MerlinTheRed](http://merlinthered.deviantart.com/).
<a href="http://creativecommons.org/licenses/by-nc-sa/2.5/"><img src="http://i.creativecommons.org/l/by-nc-sa/2.5/80x15.png" align="right"></a>

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713
util/dkjson.lua Normal file
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-- Module options:
local always_try_using_lpeg = true
local register_global_module_table = false
local global_module_name = 'json'
--[==[
David Kolf's JSON module for Lua 5.1/5.2
Version 2.5
For the documentation see the corresponding readme.txt or visit
<http://dkolf.de/src/dkjson-lua.fsl/>.
You can contact the author by sending an e-mail to 'david' at the
domain 'dkolf.de'.
Copyright (C) 2010-2013 David Heiko Kolf
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
--]==]
-- global dependencies:
local pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset =
pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset
local error, require, pcall, select = error, require, pcall, select
local floor, huge = math.floor, math.huge
local strrep, gsub, strsub, strbyte, strchar, strfind, strlen, strformat =
string.rep, string.gsub, string.sub, string.byte, string.char,
string.find, string.len, string.format
local strmatch = string.match
local concat = table.concat
local json = { version = "dkjson 2.5" }
if register_global_module_table then
_G[global_module_name] = json
end
local _ENV = nil -- blocking globals in Lua 5.2
pcall (function()
-- Enable access to blocked metatables.
-- Don't worry, this module doesn't change anything in them.
local debmeta = require "debug".getmetatable
if debmeta then getmetatable = debmeta end
end)
json.null = setmetatable ({}, {
__tojson = function () return "null" end
})
local function isarray (tbl)
local max, n, arraylen = 0, 0, 0
for k,v in pairs (tbl) do
if k == 'n' and type(v) == 'number' then
arraylen = v
if v > max then
max = v
end
else
if type(k) ~= 'number' or k < 1 or floor(k) ~= k then
return false
end
if k > max then
max = k
end
n = n + 1
end
end
if max > 10 and max > arraylen and max > n * 2 then
return false -- don't create an array with too many holes
end
return true, max
end
local escapecodes = {
["\""] = "\\\"", ["\\"] = "\\\\", ["\b"] = "\\b", ["\f"] = "\\f",
["\n"] = "\\n", ["\r"] = "\\r", ["\t"] = "\\t"
}
local function escapeutf8 (uchar)
local value = escapecodes[uchar]
if value then
return value
end
local a, b, c, d = strbyte (uchar, 1, 4)
a, b, c, d = a or 0, b or 0, c or 0, d or 0
if a <= 0x7f then
value = a
elseif 0xc0 <= a and a <= 0xdf and b >= 0x80 then
value = (a - 0xc0) * 0x40 + b - 0x80
elseif 0xe0 <= a and a <= 0xef and b >= 0x80 and c >= 0x80 then
value = ((a - 0xe0) * 0x40 + b - 0x80) * 0x40 + c - 0x80
elseif 0xf0 <= a and a <= 0xf7 and b >= 0x80 and c >= 0x80 and d >= 0x80 then
value = (((a - 0xf0) * 0x40 + b - 0x80) * 0x40 + c - 0x80) * 0x40 + d - 0x80
else
return ""
end
if value <= 0xffff then
return strformat ("\\u%.4x", value)
elseif value <= 0x10ffff then
-- encode as UTF-16 surrogate pair
value = value - 0x10000
local highsur, lowsur = 0xD800 + floor (value/0x400), 0xDC00 + (value % 0x400)
return strformat ("\\u%.4x\\u%.4x", highsur, lowsur)
else
return ""
end
end
local function fsub (str, pattern, repl)
-- gsub always builds a new string in a buffer, even when no match
-- exists. First using find should be more efficient when most strings
-- don't contain the pattern.
if strfind (str, pattern) then
return gsub (str, pattern, repl)
else
return str
end
end
local function quotestring (value)
-- based on the regexp "escapable" in https://github.com/douglascrockford/JSON-js
value = fsub (value, "[%z\1-\31\"\\\127]", escapeutf8)
if strfind (value, "[\194\216\220\225\226\239]") then
value = fsub (value, "\194[\128-\159\173]", escapeutf8)
value = fsub (value, "\216[\128-\132]", escapeutf8)
value = fsub (value, "\220\143", escapeutf8)
value = fsub (value, "\225\158[\180\181]", escapeutf8)
value = fsub (value, "\226\128[\140-\143\168-\175]", escapeutf8)
value = fsub (value, "\226\129[\160-\175]", escapeutf8)
value = fsub (value, "\239\187\191", escapeutf8)
value = fsub (value, "\239\191[\176-\191]", escapeutf8)
end
return "\"" .. value .. "\""
end
json.quotestring = quotestring
local function replace(str, o, n)
local i, j = strfind (str, o, 1, true)
if i then
return strsub(str, 1, i-1) .. n .. strsub(str, j+1, -1)
else
return str
end
end
-- locale independent num2str and str2num functions
local decpoint, numfilter
local function updatedecpoint ()
decpoint = strmatch(tostring(0.5), "([^05+])")
-- build a filter that can be used to remove group separators
numfilter = "[^0-9%-%+eE" .. gsub(decpoint, "[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0") .. "]+"
end
updatedecpoint()
local function num2str (num)
return replace(fsub(tostring(num), numfilter, ""), decpoint, ".")
end
local function str2num (str)
local num = tonumber(replace(str, ".", decpoint))
if not num then
updatedecpoint()
num = tonumber(replace(str, ".", decpoint))
end
return num
end
local function addnewline2 (level, buffer, buflen)
buffer[buflen+1] = "\n"
buffer[buflen+2] = strrep (" ", level)
buflen = buflen + 2
return buflen
end
function json.addnewline (state)
if state.indent then
state.bufferlen = addnewline2 (state.level or 0,
state.buffer, state.bufferlen or #(state.buffer))
end
end
local encode2 -- forward declaration
local function addpair (key, value, prev, indent, level, buffer, buflen, tables, globalorder, state)
local kt = type (key)
if kt ~= 'string' and kt ~= 'number' then
return nil, "type '" .. kt .. "' is not supported as a key by JSON."
end
if prev then
buflen = buflen + 1
buffer[buflen] = ","
end
if indent then
buflen = addnewline2 (level, buffer, buflen)
end
buffer[buflen+1] = quotestring (key)
buffer[buflen+2] = ":"
return encode2 (value, indent, level, buffer, buflen + 2, tables, globalorder, state)
end
local function appendcustom(res, buffer, state)
local buflen = state.bufferlen
if type (res) == 'string' then
buflen = buflen + 1
buffer[buflen] = res
end
return buflen
end
local function exception(reason, value, state, buffer, buflen, defaultmessage)
defaultmessage = defaultmessage or reason
local handler = state.exception
if not handler then
return nil, defaultmessage
else
state.bufferlen = buflen
local ret, msg = handler (reason, value, state, defaultmessage)
if not ret then return nil, msg or defaultmessage end
return appendcustom(ret, buffer, state)
end
end
function json.encodeexception(reason, value, state, defaultmessage)
return quotestring("<" .. defaultmessage .. ">")
end
encode2 = function (value, indent, level, buffer, buflen, tables, globalorder, state)
local valtype = type (value)
local valmeta = getmetatable (value)
valmeta = type (valmeta) == 'table' and valmeta -- only tables
local valtojson = valmeta and valmeta.__tojson
if valtojson then
if tables[value] then
return exception('reference cycle', value, state, buffer, buflen)
end
tables[value] = true
state.bufferlen = buflen
local ret, msg = valtojson (value, state)
if not ret then return exception('custom encoder failed', value, state, buffer, buflen, msg) end
tables[value] = nil
buflen = appendcustom(ret, buffer, state)
elseif value == nil then
buflen = buflen + 1
buffer[buflen] = "null"
elseif valtype == 'number' then
local s
if value ~= value or value >= huge or -value >= huge then
-- This is the behaviour of the original JSON implementation.
s = "null"
else
s = num2str (value)
end
buflen = buflen + 1
buffer[buflen] = s
elseif valtype == 'boolean' then
buflen = buflen + 1
buffer[buflen] = value and "true" or "false"
elseif valtype == 'string' then
buflen = buflen + 1
buffer[buflen] = quotestring (value)
elseif valtype == 'table' then
if tables[value] then
return exception('reference cycle', value, state, buffer, buflen)
end
tables[value] = true
level = level + 1
local isa, n = isarray (value)
if n == 0 and valmeta and valmeta.__jsontype == 'object' then
isa = false
end
local msg
if isa then -- JSON array
buflen = buflen + 1
buffer[buflen] = "["
for i = 1, n do
buflen, msg = encode2 (value[i], indent, level, buffer, buflen, tables, globalorder, state)
if not buflen then return nil, msg end
if i < n then
buflen = buflen + 1
buffer[buflen] = ","
end
end
buflen = buflen + 1
buffer[buflen] = "]"
else -- JSON object
local prev = false
buflen = buflen + 1
buffer[buflen] = "{"
local order = valmeta and valmeta.__jsonorder or globalorder
if order then
local used = {}
n = #order
for i = 1, n do
local k = order[i]
local v = value[k]
if v then
used[k] = true
buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
prev = true -- add a seperator before the next element
end
end
for k,v in pairs (value) do
if not used[k] then
buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
if not buflen then return nil, msg end
prev = true -- add a seperator before the next element
end
end
else -- unordered
for k,v in pairs (value) do
buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
if not buflen then return nil, msg end
prev = true -- add a seperator before the next element
end
end
if indent then
buflen = addnewline2 (level - 1, buffer, buflen)
end
buflen = buflen + 1
buffer[buflen] = "}"
end
tables[value] = nil
else
return exception ('unsupported type', value, state, buffer, buflen,
"type '" .. valtype .. "' is not supported by JSON.")
end
return buflen
end
function json.encode (value, state)
state = state or {}
local oldbuffer = state.buffer
local buffer = oldbuffer or {}
state.buffer = buffer
updatedecpoint()
local ret, msg = encode2 (value, state.indent, state.level or 0,
buffer, state.bufferlen or 0, state.tables or {}, state.keyorder, state)
if not ret then
error (msg, 2)
elseif oldbuffer == buffer then
state.bufferlen = ret
return true
else
state.bufferlen = nil
state.buffer = nil
return concat (buffer)
end
end
local function loc (str, where)
local line, pos, linepos = 1, 1, 0
while true do
pos = strfind (str, "\n", pos, true)
if pos and pos < where then
line = line + 1
linepos = pos
pos = pos + 1
else
break
end
end
return "line " .. line .. ", column " .. (where - linepos)
end
local function unterminated (str, what, where)
return nil, strlen (str) + 1, "unterminated " .. what .. " at " .. loc (str, where)
end
local function scanwhite (str, pos)
while true do
pos = strfind (str, "%S", pos)
if not pos then return nil end
local sub2 = strsub (str, pos, pos + 1)
if sub2 == "\239\187" and strsub (str, pos + 2, pos + 2) == "\191" then
-- UTF-8 Byte Order Mark
pos = pos + 3
elseif sub2 == "//" then
pos = strfind (str, "[\n\r]", pos + 2)
if not pos then return nil end
elseif sub2 == "/*" then
pos = strfind (str, "*/", pos + 2)
if not pos then return nil end
pos = pos + 2
else
return pos
end
end
end
local escapechars = {
["\""] = "\"", ["\\"] = "\\", ["/"] = "/", ["b"] = "\b", ["f"] = "\f",
["n"] = "\n", ["r"] = "\r", ["t"] = "\t"
}
local function unichar (value)
if value < 0 then
return nil
elseif value <= 0x007f then
return strchar (value)
elseif value <= 0x07ff then
return strchar (0xc0 + floor(value/0x40),
0x80 + (floor(value) % 0x40))
elseif value <= 0xffff then
return strchar (0xe0 + floor(value/0x1000),
0x80 + (floor(value/0x40) % 0x40),
0x80 + (floor(value) % 0x40))
elseif value <= 0x10ffff then
return strchar (0xf0 + floor(value/0x40000),
0x80 + (floor(value/0x1000) % 0x40),
0x80 + (floor(value/0x40) % 0x40),
0x80 + (floor(value) % 0x40))
else
return nil
end
end
local function scanstring (str, pos)
local lastpos = pos + 1
local buffer, n = {}, 0
while true do
local nextpos = strfind (str, "[\"\\]", lastpos)
if not nextpos then
return unterminated (str, "string", pos)
end
if nextpos > lastpos then
n = n + 1
buffer[n] = strsub (str, lastpos, nextpos - 1)
end
if strsub (str, nextpos, nextpos) == "\"" then
lastpos = nextpos + 1
break
else
local escchar = strsub (str, nextpos + 1, nextpos + 1)
local value
if escchar == "u" then
value = tonumber (strsub (str, nextpos + 2, nextpos + 5), 16)
if value then
local value2
if 0xD800 <= value and value <= 0xDBff then
-- we have the high surrogate of UTF-16. Check if there is a
-- low surrogate escaped nearby to combine them.
if strsub (str, nextpos + 6, nextpos + 7) == "\\u" then
value2 = tonumber (strsub (str, nextpos + 8, nextpos + 11), 16)
if value2 and 0xDC00 <= value2 and value2 <= 0xDFFF then
value = (value - 0xD800) * 0x400 + (value2 - 0xDC00) + 0x10000
else
value2 = nil -- in case it was out of range for a low surrogate
end
end
end
value = value and unichar (value)
if value then
if value2 then
lastpos = nextpos + 12
else
lastpos = nextpos + 6
end
end
end
end
if not value then
value = escapechars[escchar] or escchar
lastpos = nextpos + 2
end
n = n + 1
buffer[n] = value
end
end
if n == 1 then
return buffer[1], lastpos
elseif n > 1 then
return concat (buffer), lastpos
else
return "", lastpos
end
end
local scanvalue -- forward declaration
local function scantable (what, closechar, str, startpos, nullval, objectmeta, arraymeta)
local len = strlen (str)
local tbl, n = {}, 0
local pos = startpos + 1
if what == 'object' then
setmetatable (tbl, objectmeta)
else
setmetatable (tbl, arraymeta)
end
while true do
pos = scanwhite (str, pos)
if not pos then return unterminated (str, what, startpos) end
local char = strsub (str, pos, pos)
if char == closechar then
return tbl, pos + 1
end
local val1, err
val1, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
if err then return nil, pos, err end
pos = scanwhite (str, pos)
if not pos then return unterminated (str, what, startpos) end
char = strsub (str, pos, pos)
if char == ":" then
if val1 == nil then
return nil, pos, "cannot use nil as table index (at " .. loc (str, pos) .. ")"
end
pos = scanwhite (str, pos + 1)
if not pos then return unterminated (str, what, startpos) end
local val2
val2, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
if err then return nil, pos, err end
tbl[val1] = val2
pos = scanwhite (str, pos)
if not pos then return unterminated (str, what, startpos) end
char = strsub (str, pos, pos)
else
n = n + 1
tbl[n] = val1
end
if char == "," then
pos = pos + 1
end
end
end
scanvalue = function (str, pos, nullval, objectmeta, arraymeta)
pos = pos or 1
pos = scanwhite (str, pos)
if not pos then
return nil, strlen (str) + 1, "no valid JSON value (reached the end)"
end
local char = strsub (str, pos, pos)
if char == "{" then
return scantable ('object', "}", str, pos, nullval, objectmeta, arraymeta)
elseif char == "[" then
return scantable ('array', "]", str, pos, nullval, objectmeta, arraymeta)
elseif char == "\"" then
return scanstring (str, pos)
else
local pstart, pend = strfind (str, "^%-?[%d%.]+[eE]?[%+%-]?%d*", pos)
if pstart then
local number = str2num (strsub (str, pstart, pend))
if number then
return number, pend + 1
end
end
pstart, pend = strfind (str, "^%a%w*", pos)
if pstart then
local name = strsub (str, pstart, pend)
if name == "true" then
return true, pend + 1
elseif name == "false" then
return false, pend + 1
elseif name == "null" then
return nullval, pend + 1
end
end
return nil, pos, "no valid JSON value at " .. loc (str, pos)
end
end
local function optionalmetatables(...)
if select("#", ...) > 0 then
return ...
else
return {__jsontype = 'object'}, {__jsontype = 'array'}
end
end
function json.decode (str, pos, nullval, ...)
local objectmeta, arraymeta = optionalmetatables(...)
return scanvalue (str, pos, nullval, objectmeta, arraymeta)
end
function json.use_lpeg ()
local g = require ("lpeg")
if g.version() == "0.11" then
error "due to a bug in LPeg 0.11, it cannot be used for JSON matching"
end
local pegmatch = g.match
local P, S, R = g.P, g.S, g.R
local function ErrorCall (str, pos, msg, state)
if not state.msg then
state.msg = msg .. " at " .. loc (str, pos)
state.pos = pos
end
return false
end
local function Err (msg)
return g.Cmt (g.Cc (msg) * g.Carg (2), ErrorCall)
end
local SingleLineComment = P"//" * (1 - S"\n\r")^0
local MultiLineComment = P"/*" * (1 - P"*/")^0 * P"*/"
local Space = (S" \n\r\t" + P"\239\187\191" + SingleLineComment + MultiLineComment)^0
local PlainChar = 1 - S"\"\\\n\r"
local EscapeSequence = (P"\\" * g.C (S"\"\\/bfnrt" + Err "unsupported escape sequence")) / escapechars
local HexDigit = R("09", "af", "AF")
local function UTF16Surrogate (match, pos, high, low)
high, low = tonumber (high, 16), tonumber (low, 16)
if 0xD800 <= high and high <= 0xDBff and 0xDC00 <= low and low <= 0xDFFF then
return true, unichar ((high - 0xD800) * 0x400 + (low - 0xDC00) + 0x10000)
else
return false
end
end
local function UTF16BMP (hex)
return unichar (tonumber (hex, 16))
end
local U16Sequence = (P"\\u" * g.C (HexDigit * HexDigit * HexDigit * HexDigit))
local UnicodeEscape = g.Cmt (U16Sequence * U16Sequence, UTF16Surrogate) + U16Sequence/UTF16BMP
local Char = UnicodeEscape + EscapeSequence + PlainChar
local String = P"\"" * g.Cs (Char ^ 0) * (P"\"" + Err "unterminated string")
local Integer = P"-"^(-1) * (P"0" + (R"19" * R"09"^0))
local Fractal = P"." * R"09"^0
local Exponent = (S"eE") * (S"+-")^(-1) * R"09"^1
local Number = (Integer * Fractal^(-1) * Exponent^(-1))/str2num
local Constant = P"true" * g.Cc (true) + P"false" * g.Cc (false) + P"null" * g.Carg (1)
local SimpleValue = Number + String + Constant
local ArrayContent, ObjectContent
-- The functions parsearray and parseobject parse only a single value/pair
-- at a time and store them directly to avoid hitting the LPeg limits.
local function parsearray (str, pos, nullval, state)
local obj, cont
local npos
local t, nt = {}, 0
repeat
obj, cont, npos = pegmatch (ArrayContent, str, pos, nullval, state)
if not npos then break end
pos = npos
nt = nt + 1
t[nt] = obj
until cont == 'last'
return pos, setmetatable (t, state.arraymeta)
end
local function parseobject (str, pos, nullval, state)
local obj, key, cont
local npos
local t = {}
repeat
key, obj, cont, npos = pegmatch (ObjectContent, str, pos, nullval, state)
if not npos then break end
pos = npos
t[key] = obj
until cont == 'last'
return pos, setmetatable (t, state.objectmeta)
end
local Array = P"[" * g.Cmt (g.Carg(1) * g.Carg(2), parsearray) * Space * (P"]" + Err "']' expected")
local Object = P"{" * g.Cmt (g.Carg(1) * g.Carg(2), parseobject) * Space * (P"}" + Err "'}' expected")
local Value = Space * (Array + Object + SimpleValue)
local ExpectedValue = Value + Space * Err "value expected"
ArrayContent = Value * Space * (P"," * g.Cc'cont' + g.Cc'last') * g.Cp()
local Pair = g.Cg (Space * String * Space * (P":" + Err "colon expected") * ExpectedValue)
ObjectContent = Pair * Space * (P"," * g.Cc'cont' + g.Cc'last') * g.Cp()
local DecodeValue = ExpectedValue * g.Cp ()
function json.decode (str, pos, nullval, ...)
local state = {}
state.objectmeta, state.arraymeta = optionalmetatables(...)
local obj, retpos = pegmatch (DecodeValue, str, pos, nullval, state)
if state.msg then
return nil, state.pos, state.msg
else
return obj, retpos
end
end
-- use this function only once:
json.use_lpeg = function () return json end
json.using_lpeg = true
return json -- so you can get the module using json = require "dkjson".use_lpeg()
end
if always_try_using_lpeg then
pcall (json.use_lpeg)
end
return json

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@ -7,9 +7,9 @@
--]]
local newtimer = require("lain.helpers").newtimer
local json = require("lain.util").dkjson
local wibox = require("wibox")
local json = require("dkjson")
local string = { format = string.format }
local tonumber = tonumber

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widgets/weather.lua Normal file
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@ -0,0 +1,125 @@
--[[
Licensed under GNU General Public License v2
* (c) 2015, Luke Bonham
--]]
local newtimer = require("lain.helpers").newtimer
local async = require("lain.asyncshell")
local json = require("lain.util").dkjson
local lain_icons = require("lain.helpers").icons_dir
local naughty = require("naughty")
local wibox = require("wibox")
local math = { floor = math.floor }
local string = { format = string.format,
gsub = string.gsub }
local setmetatable = setmetatable
-- OpenWeatherMap
-- current weather and X-days forecast
-- lain.widgets.weather
local function worker(args)
local weather = {}
local args = args or {}
local timeout = args.timeout or 900 -- 15 min
local timeout_forecast = args.timeout or 86400 -- 24 hrs
local current_call = "curl -s 'http://api.openweathermap.org/data/2.5/weather?id=%s&units=%s&lang=%s'"
local forecast_call = "curl -s 'http://api.openweathermap.org/data/2.5/forecast/daily?id=%s&units=%s&lang=%s&cnt=%s'"
local city_id = args.city_id
local units = args.units or "metric"
local lang = args.lang or "en"
local cnt = args.cnt or 7
local date_cmd = args.date_cmd or "date -u -d @%d +'%%a %%d'"
local icons_path = args.icons_path or lain_icons .. "openweathermap/"
local w_notification_preset = args.w_notification_preset or {}
local settings = args.settings or function() end
weather.widget = wibox.widget.textbox('')
weather.icon = wibox.widget.imagebox()
function weather.show(t_out)
weather.hide()
weather.notification = naughty.notify({
text = weather.notification_text,
icon = weather.icon_path,
timeout = t_out,
preset = w_notification_preset
})
end
function weather.hide()
if weather.notification ~= nil then
naughty.destroy(weather.notification)
weather.notification = nil
end
end
function weather.attach(obj)
obj:connect_signal("mouse::enter", function()
weather.show(0)
end)
obj:connect_signal("mouse::leave", function()
weather.hide()
end)
end
function weather.forecast_update()
local cmd = string.format(forecast_call, city_id, units, lang, cnt)
async.request(cmd, function(f)
j = f:read("*a")
f:close()
weather_now, pos, err = json.decode(j, 1, nil)
if tonumber(weather_now["cod"]) == 200 then
weather.notification_text = ''
for i = 1, weather_now["cnt"] do
local f = assert(io.popen(string.format(date_cmd, weather_now["list"][i]["dt"])))
day = string.gsub(f:read("a"), "\n", "")
f:close()
tmin = math.floor(weather_now["list"][i]["temp"]["min"])
tmax = math.floor(weather_now["list"][i]["temp"]["max"])
desc = weather_now["list"][i]["weather"][1]["description"]
weather.notification_text = weather.notification_text ..
string.format("<b>%s</b>: %s, %d - %d ", day, desc, tmin, tmax)
if i < weather_now["cnt"] then
weather.notification_text = weather.notification_text .. "\n"
end
end
end
end)
end
function weather.update()
local cmd = string.format(current_call, city_id, units, lang)
async.request(cmd, function(f)
j = f:read("*a")
f:close()
weather_now, pos, err = json.decode(j, 1, nil)
if err then
weather.widget.set_text("N/A")
weather.icon:set_image(icons_path .. "na.png")
elseif tonumber(weather_now["cod"]) == 200 then
weather.icon_path = icons_path .. weather_now["weather"][1]["icon"] .. ".png"
weather.icon:set_image(weather.icon_path)
widget = weather.widget
settings()
end
end)
end
newtimer("weather", timeout, weather.update)
newtimer("weather_forecast", timeout, weather.forecast_update)
return setmetatable(weather, { __index = weather.widget })
end
return setmetatable({}, { __call = function(_, ...) return worker(...) end })

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Yawn icons
==========
These are [Plain Weather Icons](http://merlinthered.deviantart.com/art/plain-weather-icons-157162192), created by [MerlinTheRed](http://merlinthered.deviantart.com/).
<a href="http://creativecommons.org/licenses/by-nc-sa/2.5/"><img src="http://i.creativecommons.org/l/by-nc-sa/2.5/80x15.png" align="right"></a>

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--[[
Licensed under GNU General Public License v2
* (c) 2013, Luke Bonham
--]]
local newtimer = require("lain.helpers").newtimer
local async = require("lain.asyncshell")
local naughty = require("naughty")
local wibox = require("wibox")
local debug = { getinfo = debug.getinfo }
local io = { lines = io.lines,
open = io.open }
local os = { date = os.date,
getenv = os.getenv }
local string = { find = string.find,
match = string.match,
gsub = string.gsub,
sub = string.sub }
local tonumber = tonumber
local setmetatable = setmetatable
-- YAhoo! Weather Notification
-- lain.widgets.yawn
local yawn =
{
icon = wibox.widget.imagebox(),
widget = wibox.widget.textbox('')
}
local project_path = debug.getinfo(1, 'S').source:match[[^@(.*/).*$]]
local localizations_path = project_path .. 'localizations/'
local icon_path = project_path .. 'icons/'
local api_url = 'http://weather.yahooapis.com/forecastrss'
local units_set = '?u=c&w=' -- Default is Celsius
local language = string.match(os.getenv("LANG"), "(%S*$*)[.]") or "en_US" -- if LANG is not set
local weather_data = nil
local notification = nil
local city_id = nil
local sky = nil
local settings = function() end
yawn_notification_preset = {}
function yawn.fetch_weather()
local url = api_url .. units_set .. city_id
local cmd = "curl --connect-timeout 1 -fsm 3 '" .. url .. "'"
async.request(cmd, function(f)
local text = f:read("*a")
f:close()
-- In case of no connection or invalid city ID
-- widgets won't display
if text == "" or text:match("City not found")
then
yawn.icon:set_image(icon_path .. "na.png")
if text == "" then
weather_data = "Service not available at the moment."
yawn.widget:set_text(" N/A ")
else
weather_data = "City not found!\n" ..
"Are you sure " .. city_id ..
" is your Yahoo city ID?"
yawn.widget:set_text(" ? ")
end
return
end
-- Processing raw data
weather_data = text:gsub("<.->", "")
weather_data = weather_data:match("Current Conditions:.-Full") or ""
-- may still happens in case of bad connectivity
if weather_data == "" then
yawn.icon:set_image(icon_path .. "na.png")
yawn.widget:set_text(" ? ")
return
end
weather_data = weather_data:gsub("Current Conditions:.-\n", "Now: ")
weather_data = weather_data:gsub("Forecast:.-\n", "")
weather_data = weather_data:gsub("\nFull", "")
weather_data = weather_data:gsub("[\n]$", "")
weather_data = weather_data:gsub(" [-] " , ": ")
weather_data = weather_data:gsub("[.]", ",")
weather_data = weather_data:gsub("High: ", "")
weather_data = weather_data:gsub(" Low: ", " - ")
-- Getting info for text widget
local now = weather_data:sub(weather_data:find("Now:")+5,
weather_data:find("\n")-1)
forecast = now:sub(1, now:find(",")-1)
units = now:sub(now:find(",")+2, -2)
-- Day/Night icon change
local hour = tonumber(os.date("%H"))
sky = icon_path
if string.find(forecast, "Clear") or
string.find(forecast, "Fair") or
string.find(forecast, "Partly Cloudy") or
string.find(forecast, "Mostly Cloudy")
then
if hour >= 6 and hour <= 18
then
sky = sky .. "Day"
else
sky = sky .. "Night"
end
end
sky = sky .. forecast:gsub(" ", ""):gsub("/", "") .. ".png"
-- In case there's no defined icon for current forecast
if io.open(sky) == nil then
sky = icon_path .. "na.png"
end
-- Localization
local f = io.open(localizations_path .. language, "r")
if language:find("en_") == nil and f ~= nil
then
f:close()
for line in io.lines(localizations_path .. language)
do
word = string.sub(line, 1, line:find("|")-1)
translation = string.sub(line, line:find("|")+1)
weather_data = string.gsub(weather_data, word, translation)
end
end
-- Finally setting infos
yawn.icon:set_image(sky)
widget = yawn.widget
_data = weather_data:match(": %S.-,") or weather_data
forecast = _data:gsub(": ", ""):gsub(",", "")
units = units:gsub(" ", "")
settings()
end)
end
function yawn.hide()
if notification ~= nil then
naughty.destroy(notification)
notification = nil
end
end
function yawn.show(t_out)
if yawn.widget._layout.text:match("?")
then
yawn.fetch_weather()
end
yawn.hide()
notification = naughty.notify({
preset = yawn_notification_preset,
text = weather_data,
icon = sky,
timeout = t_out,
})
end
function yawn.register(id, args)
local args = args or {}
local timeout = args.timeout or 600
settings = args.settings or function() end
if args.u == "f" then units_set = '?u=f&w=' end
city_id = id
newtimer("yawn", timeout, yawn.fetch_weather)
yawn.icon:connect_signal("mouse::enter", function()
yawn.show(0)
end)
yawn.icon:connect_signal("mouse::leave", function()
yawn.hide()
end)
return yawn
end
function yawn.attach(widget, id, args)
yawn.register(id, args)
widget:connect_signal("mouse::enter", function()
yawn.show(0)
end)
widget:connect_signal("mouse::leave", function()
yawn.hide()
end)
end
return setmetatable(yawn, { __call = function(_, ...) return yawn.register(...) end })

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@ -1,61 +0,0 @@
Now:|Jetzt:
Sun:|So:
Mon:|Mo:
Tue:|Di:
Wed:|Mi:
Thu:|Do:
Fri:|Fr:
Sat:|Sa:
Mostly Sunny|Größtenteils Sonnig
Sunny|Sonnig
Sun|Sonne
Rain/Thunder|Regen/Donner
Isolated Thunderstorms|Vereinzelte Gewitter
Scattered Thunderstorms|Aufgelockertes Gewitter
Thundershowers|Gewitterschauer
Thunderstorms|Gewitter
Thunder in the Vicinity|Donner in der Umgebung
Thunder|Donner
AM|Vormittags
PM|Nachmittags
Early|Früh
Late|Spät
Few|einige
Severe|starker
Clear|Klar
Fair|Heiter
Partly|teilweise
Mostly|größtenteils
Cloudy|Wolkig
Clouds|Wolken
Scattered Showers|Vereinzelte Schauer
Light Snow Showers|Leichter Schneeregen
Snow Showers|Schneeregen
Heavy Snow|Starker Schneefall
Scattered Snow Showers|Vereinzelter Schneefall
Mixed Rain And Snow|Gemischter Regen und Schnee
Mixed Rain And Sleet|Gemischter Regen und Graupel
Mixed Snow And Sleet|Gemischter Schnee und Graupel
Mixed Rain And Hail|Gemischter Regen und Hagel
Snow Flurries|Schneegestöber
Blowing Snow|Schneetreiben
Blowing Rain|Treibender Regen
Heavy Rain|Starke Regenfälle
Freezing Rain|Eisregen
Showers|Schauer
Light Rain|Leichter Regen
Heavy|Starker
Rain|Regen
Windy|Windig
Wind|Wind
Snow|Schnee
Sleet|Graupel
Freezing Drizzle|Gefrierender Sprühregen
Light Drizzle|Leichter Sprühregen
Drizzle|Sprühregen
Hail|Hagel
Fog|Nebel
Foggy|Nebelig
Haze|Dunst
Light|leichter
With|mit

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@ -1,61 +0,0 @@
Now:|Auj:
Sun:|Dim:
Mon:|Lun:
Tue:|Mar:
Wed:|Mer:
Thu:|Jeu:
Fri:|Ven:
Sat:|Sam:
Mostly Sunny|Partiellement ensoleillé
Sunny|Ensoleillé
Sun|Soleil
Rain/Thunder|Pluie/Orage
Isolated Thunderstorms|Orages localisés
Scattered Thunderstorms|Orages épars
Thundershowers|Tempête
Thunderstorms|Orages
Thunder in the Vicinity|Orage aux alentours
Thunder|Orages
AM|Matinée
PM|Après-midi
Early|Tôt
Late|Tard
Few|Quelques
Severe|Sévère
Clear|Clair
Fair|Clair
Partly|Partiellement
Mostly|Très
Cloudy|Nuageux
Clouds|Nuages
Scattered Showers|Nuages épars
Light Snow Showers|Légères averses de neige
Snow Showers|Averses de neige
Heavy Snow|Neige
Scattered Snow Showers|Averses de neige localisées
Mixed Rain And Snow|Alternance de neige et de pluie
Mixed Rain And Sleet|Alternance de pluie et de neige fondue
Mixed Snow And Sleet|Alternance de neige et de neige fondue
Mixed Rain And Hail|Alternance de pluie et de grêle
Snow Flurries|Averses de neige
Blowing Snow|Neige
Blowing Rain|Pluie
Heavy Rain|Pluie forte
Freezing Rain|Pluie verglaçante
Showers|Averses
Light Rain|Pluie légère
Heavy|Forte
Rain|Pluie
Windy|Venteux
Wind|Vent
Snow|Neige
Sleet|Neige fondue
Freezing Drizzle|Bruine verglaçante
Light Drizzle|Légère bruine
Drizzle|Bruine
Hail|Grêle
Fog|Brouillard
Foggy|Brumeux
Haze|Brume
Light|Clair
With|Avec

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@ -1,61 +0,0 @@
Now:|Ora:
Sun:|Dom:
Mon:|Lun:
Tue:|Mar:
Wed:|Mer:
Thu:|Gio:
Fri:|Ven:
Sat:|Sab:
Mostly Sunny|Abbastanza Soleggiato
Sunny|Soleggiato
Sun|Soleggiato
Rain/Thunder|Temporali
Isolated Thunderstorms|Temporali Isolati
Scattered Thunderstorms|Temporali Sparsi
Thundershowers|Rovesci Temporaleschi
Thunderstorms|Temporali
Thunder in the Vicinity|Tuoni in prossimità
Thunder|Temporale
AM|In Mattinata
PM|Nel Pomeriggio
Early|In Mattinata
Late|In Serata
Few|Sporadiche
Severe|Forti
Clear|Sereno
Fair|Sereno
Partly|Parzialmente
Mostly|Molto
Cloudy|Nuvoloso
Clouds|Nuvoloso
Scattered Showers|Temporali Sparsi
Light Snow Showers|Nevicate Leggere
Snow Showers|Nevicate
aeavy Snow|Forti Nevicate
Scattered Snow Showers|Nevicate Sparse
Mixed Rain And Snow|Pioggia E Neve
Mixed Rain And Sleet|Pioggia E Nevischio
Mixed Snow And Sleet|Neve E Nevischio
Mixed Rain And Hail|Pioggia E Grandine
Snow Flurries|Folate Di Neve
Blowing Snow|Neve Battente
Blowing Rain|Pioggia Battente
Heavy Rain|Forti Piogge
Freezing Rain|Pioggia Congelantesi
Showers|Piogge
Light Rain|Pioggia Leggera
Heavy|Forti
Rain|Piovoso
Windy|Ventoso
Wind|Ventoso
Snow|Neve
Sleet|Nevischio
Light Drizzle|Pioggia Leggera
Drizzle|Pioggia Leggera
Freezing Drizzle|Pioggerella Congelantesi
Hail|Grandine
Fog|Nebbia
Foggy|Nebbioso
Haze|Nebbia
Light|Leggere
With|Con

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@ -1,61 +0,0 @@
Now:|
Sun:|
Mon:|
Tue:|
Wed:|
Thu:|
Fri:|
Sat:|
Mostly Sunny|
Sunny|
Sun|
Rain/Thunder|
Isolated Thunderstorms|
Scattered Thunderstorms|
Thundershowers|
Thunderstorms|
Thunder in the Vicinity|
Thunder|
AM|
PM|
Early|
Late|
Few|
Severe|
Clear|
Fair|
Partly|
Mostly|
Cloudy|
Clouds|
Scattered Showers|
Light Snow Showers|
Snow Showers|
Heavy Snow|
Scattered Snow Showers|
Mixed Rain And Snow|
Mixed Rain And Sleet|
Mixed Snow And Sleet|
Mixed Rain And Hail|
Snow Flurries|
Blowing Snow|
Blowing Rain|
Heavy Rain|
Freezing Rain|
Showers|
Light Rain|
Heavy|
Rain|
Windy|
Wind|
Snow|
Sleet|
Freezing Drizzle|
Light Drizzle|
Drizzle|
Hail|
Fog|
Foggy|
Haze|
Light|
With|

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@ -1,61 +0,0 @@
Now:|Cейчас:
Sun:|Воскресенье:
Mon:|Понедельник:
Tue:|Вторник:
Wed:|Среда:
Thu:|Четверг:
Fri:|Пятница:
Sat:|Суббота:
Mostly Sunny|Преимущественно солнечно
Sunny|Солнечно
Sun|Солнце
Rain/Thunder|Дождь/Гром
Isolated Thunderstorms|Изолированные грозы
Scattered Thunderstorms|Рассеянные грозы
Thundershowers|Ливни
Thunderstorms|Грозы
Thunder in the Vicinity|Гром в окрестностях
Thunder|Гром
AM|Утро
PM|Вечер
Early|Рано
Late|Поздно
Few|Мало
Severe|Тяжелый
Clear|Ясно
Fair|Светлый
Partly|Частично
Mostly|По большей части
Cloudy|Облачно
Clouds|Облака
Scattered Showers|Рассеянные ливни
Light Snow Showers|Небольшой снег
Snow Showers|Ливневый Снег
Heavy Snow|Сильный снегопад
Scattered Snow Showers|Рассеянный ливневый снег
Mixed Rain And Snow|Снег с дождём
Mixed Rain And Sleet|Дождь и мокрый снег
Mixed Snow And Sleet|Снег и мокрый снег
Mixed Rain And Hail|Дождь с градом
Snow Flurries|Снежные порывы
Blowing Snow|Снег и ветер
Blowing Rain|Дождь и ветер
Heavy Rain|Сильный дождь
Freezing Rain|Ледяной дождь
Showers|Ливни
Light Rain|Небольшой дождь
Heavy|Сильный
Rain|Дождь
Windy|Ветреный
Wind|Ветер
Snow|Снег
Sleet|Мокрый снег
Freezing Drizzle|Изморозь
Light Drizzle|Лёгкая изморось
Drizzle|Моросящий дождь
Hail|Град
Fog|Туман
Foggy|Туманно
Haze|Дымка
Light|Лёгкий
With|С

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@ -1,61 +0,0 @@
Now:|当前:
Sun:|周日:
Mon:|周一:
Tue:|周二:
Wed:|周三:
Thu:|周四:
Fri:|周五:
Sat:|周六:
Mostly Sunny|晴时多云
Sunny|晴朗
Sun|太阳
Rain/Thunder|雨/雷
Isolated Thunderstorms|局部雷雨
Scattered Thunderstorms|零星雷雨
Thundershowers|雷阵雨
Thunderstorms|雷雨
Thunder in the Vicinity|周围有雷雨
Thunder|雷鸣
AM|上午
PM|下午
Early|早
Late|晚
Few|短暂
Severe|恶劣
Clear|晴朗
Fair|晴
Partly|局部
Mostly|大部
Cloudy|多云
Clouds|有云
Scattered Showers|零星阵雨
Light Snow Showers|小阵雪
Snow Showers|阵雪
Heavy Snow|大雪
Scattered Snow Showers|零星阵雪
Mixed Rain And Snow|雨夹雪
Mixed Rain And Sleet|雨转雨夹雪
Mixed Snow And Sleet|雪转雨夹雪
Mixed Rain And Hail|雨夹冰雹
Snow Flurries|阵雪
Blowing Snow|风吹雪
Blowing Rain|风吹雨
Heavy Rain|大雨
Freezing Rain|冻雨
Showers|阵雨
Light Rain|小雨
Heavy|大
Rain|雨
Windy|有风
Wind|风
Snow|雪
Sleet|冻雨
Freezing Drizzle|冻毛毛雨
Light Drizzle|细雨
Drizzle|毛毛雨
Hail|冰雹
Fog|雾
Foggy|有雾
Haze|霾
Light|小
With|與

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@ -1,61 +0,0 @@
Now:|現在:
Sun:|週日:
Mon:|週一:
Tue:|週二:
Wed:|週三:
Thu:|週四:
Fri:|週五:
Sat:|週六:
Mostly Sunny|晴時多雲
Sunny|大太陽
Sun|太陽
Rain/Thunder|雨時有雷
Isolated Thunderstorms|局部雷雨
Scattered Thunderstorms|零星雷雨
Thundershowers|雷陣雨
Thunderstorms|雷雨
Thunder in the Vicinity|局部性雷雨
Thunder|雷嗚
AM|上午
PM|下午
Early|早
Late|晚有
Few|短暫
Severe|惡劣
Clear|晴朗
Fair|晴
Partly|局部
Mostly|大部
Cloudy|多雲
Clouds|有雲
Scattered Showers|零星陣雨
Light Snow Showers|小陣雪
Snow Showers|陣雪
Heavy Snow|大雪
Scattered Snow Showers|零星陣雪
Mixed Rain And Snow|雨夾雪
Mixed Rain And Sleet|雨時雨夾雪
Mixed Snow And Sleet|雪時雨夾雪
Mixed Rain And Hail|雨夾冰雹
Snow Flurries|陣雪
Blowing Snow|風吹雪
Blowing Rain|風吹雨
Heavy Rain|大雨
Freezing Rain|凍雨
Showers|陣雨
Light Rain|小雨
Heavy|大
Rain|雨
Windy|有風
Wind|風
Snow|雪
Sleet|冰珠
Freezing Drizzle|凍毛毛雨
Light Drizzle|細雨
Drizzle|毛毛雨
Hail|冰雹
Fog|霧
Foggy|有霧
Haze|霾
Light|小
With|與

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