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Matthias
2022-12-24 21:58:57 +01:00
commit 4c4a94857e
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.config/awesome/lain/util/dkjson.lua Normal file
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-- Module options:
local always_use_lpeg = false
local register_global_module_table = false
local global_module_name = 'json'
--[==[
David Kolf's JSON module for Lua 5.1 - 5.4
Version 2.6
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) 2010-2021 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 =
pairs, type, tostring, tonumber, getmetatable, setmetatable
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 2.6" }
local jsonlpeg = {}
if register_global_module_table then
if always_use_lpeg then
_G[global_module_name] = jsonlpeg
else
_G[global_module_name] = json
end
end
_ENV = nil -- blocking globals in Lua 5.2 and later
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 ~= nil 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 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 function ErrorUnterminatedCall (str, pos, what, state)
return ErrorCall (str, pos - 1, "unterminated " .. what, state)
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 function ErrUnterminated (what)
return g.Cmt (g.Cc (what) * g.Carg (2), ErrorUnterminatedCall)
end
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"\"" + ErrUnterminated "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 start = pos
local npos
local t, nt = {}, 0
repeat
obj, cont, npos = pegmatch (ArrayContent, str, pos, nullval, state)
if cont == 'end' then
return ErrorUnterminatedCall (str, start, "array", state)
end
pos = npos
if cont == 'cont' or cont == 'last' then
nt = nt + 1
t[nt] = obj
end
until cont ~= 'cont'
return pos, setmetatable (t, state.arraymeta)
end
local function parseobject (str, pos, nullval, state)
local obj, key, cont
local start = pos
local npos
local t = {}
repeat
key, obj, cont, npos = pegmatch (ObjectContent, str, pos, nullval, state)
if cont == 'end' then
return ErrorUnterminatedCall (str, start, "object", state)
end
pos = npos
if cont == 'cont' or cont == 'last' then
t[key] = obj
end
until cont ~= 'cont'
return pos, setmetatable (t, state.objectmeta)
end
local Array = P"[" * g.Cmt (g.Carg(1) * g.Carg(2), parsearray)
local Object = P"{" * g.Cmt (g.Carg(1) * g.Carg(2), parseobject)
local Value = Space * (Array + Object + SimpleValue)
local ExpectedValue = Value + Space * Err "value expected"
local ExpectedKey = String + Err "key expected"
local End = P(-1) * g.Cc'end'
local ErrInvalid = Err "invalid JSON"
ArrayContent = (Value * Space * (P"," * g.Cc'cont' + P"]" * g.Cc'last'+ End + ErrInvalid) + g.Cc(nil) * (P"]" * g.Cc'empty' + End + ErrInvalid)) * g.Cp()
local Pair = g.Cg (Space * ExpectedKey * Space * (P":" + Err "colon expected") * ExpectedValue)
ObjectContent = (g.Cc(nil) * g.Cc(nil) * P"}" * g.Cc'empty' + End + (Pair * Space * (P"," * g.Cc'cont' + P"}" * g.Cc'last' + End + ErrInvalid) + ErrInvalid)) * g.Cp()
local DecodeValue = ExpectedValue * g.Cp ()
jsonlpeg.version = json.version
jsonlpeg.encode = json.encode
jsonlpeg.null = json.null
jsonlpeg.quotestring = json.quotestring
jsonlpeg.addnewline = json.addnewline
jsonlpeg.encodeexception = json.encodeexception
jsonlpeg.using_lpeg = true
function jsonlpeg.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
-- cache result of this function:
json.use_lpeg = function () return jsonlpeg end
jsonlpeg.use_lpeg = json.use_lpeg
return jsonlpeg
end
if always_use_lpeg then
return json.use_lpeg()
end
return json

190
.config/awesome/lain/util/init.lua Normal file
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--[[
Lain
Layouts, widgets and utilities for Awesome WM
Utilities section
Licensed under GNU General Public License v2
* (c) 2013, Luca CPZ
* (c) 2010-2012, Peter Hofmann
--]]
local awful = require("awful")
local sqrt = math.sqrt
local pairs = pairs
local client = client
local tonumber = tonumber
local wrequire = require("lain.helpers").wrequire
local setmetatable = setmetatable
-- Lain utilities submodule
-- lain.util
local util = { _NAME = "lain.util" }
-- Like awful.menu.clients, but only show clients of currently selected tags
function util.menu_clients_current_tags(menu, args)
-- List of currently selected tags.
local cls_tags = awful.screen.focused().selected_tags
if cls_tags == nil then return nil end
-- Final list of menu items.
local cls_t = {}
-- For each selected tag get all clients of that tag and add them to
-- the menu. A click on a menu item will raise that client.
for i = 1,#cls_tags do
local t = cls_tags[i]
local cls = t:clients()
for _, c in pairs(cls) do
cls_t[#cls_t + 1] = { awful.util.escape(c.name) or "",
function ()
c.minimized = false
client.focus = c
c:raise()
end,
c.icon }
end
end
-- No clients? Then quit.
if #cls_t <= 0 then return nil end
-- menu may contain some predefined values, otherwise start with a
-- fresh menu.
if not menu then menu = {} end
-- Set the list of items and show the menu.
menu.items = cls_t
local m = awful.menu(menu)
m:show(args)
return m
end
-- Magnify a client: set it to "float" and resize it.
function util.magnify_client(c, width_f, height_f)
if c and not c.floating then
util.magnified_client = c
util.mc(c, width_f, height_f)
else
util.magnified_client = nil
c.floating = false
end
end
-- https://github.com/lcpz/lain/issues/195
function util.mc(c, width_f, height_f)
c = c or util.magnified_client
if not c then return end
c.floating = true
local s = awful.screen.focused()
local mg = s.workarea
local g = {}
local mwfact = width_f or s.selected_tag.master_width_factor or 0.5
g.width = sqrt(mwfact) * mg.width
g.height = sqrt(height_f or mwfact) * mg.height
g.x = mg.x + (mg.width - g.width) / 2
g.y = mg.y + (mg.height - g.height) / 2
if c then c:geometry(g) end -- if c is still a valid object
end
-- Non-empty tag browsing
-- direction in {-1, 1} <-> {previous, next} non-empty tag
function util.tag_view_nonempty(direction,sc)
direction = direction or 1
local s = sc or awful.screen.focused()
local tags = s.tags
local sel = s.selected_tag
local i = sel.index
repeat
i = i + direction
-- Wrap around when we reach one of the bounds
if i > #tags then
i = i - #tags
end
if i < 1 then
i = i + #tags
end
local t = tags[i]
-- Stop when we get back to where we started
if t == sel then
break
end
-- If it's The One, view it.
if #t:clients() > 0 then
t:view_only()
return
end
until false
end
-- {{{ Dynamic tagging
-- Add a new tag
function util.add_tag(layout)
awful.prompt.run {
prompt = "New tag name: ",
textbox = awful.screen.focused().mypromptbox.widget,
exe_callback = function(name)
if not name or #name == 0 then return end
awful.tag.add(name, { screen = awful.screen.focused(), layout = layout or awful.layout.suit.tile }):view_only()
end
}
end
-- Rename current tag
function util.rename_tag()
awful.prompt.run {
prompt = "Rename tag: ",
textbox = awful.screen.focused().mypromptbox.widget,
exe_callback = function(new_name)
if not new_name or #new_name == 0 then return end
local t = awful.screen.focused().selected_tag
if t then
t.name = new_name
end
end
}
end
-- Move current tag
-- pos in {-1, 1} <-> {previous, next} tag position
function util.move_tag(pos)
local tag = awful.screen.focused().selected_tag
if tonumber(pos) <= -1 then
awful.tag.move(tag.index - 1, tag)
else
awful.tag.move(tag.index + 1, tag)
end
end
-- Delete current tag
-- Any rule set on the tag shall be broken
function util.delete_tag()
local t = awful.screen.focused().selected_tag
if not t then return end
t:delete()
end
-- }}}
-- On the fly useless gaps change
function util.useless_gaps_resize(thatmuch, s, t)
local scr = s or awful.screen.focused()
local tag = t or scr.selected_tag
tag.gap = tag.gap + tonumber(thatmuch)
awful.layout.arrange(scr)
end
return setmetatable(util, { __index = wrequire })

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--[[
Licensed under MIT License
* (c) 2013, Luca CPZ
* (c) 2009, Uli Schlachter
* (c) 2009, Majic
--]]
local format = string.format
local setmetatable = setmetatable
-- Lain markup util submodule
-- lain.util.markup
local markup = { fg = {}, bg = {} }
-- Convenience tags
function markup.bold(text) return format("<b>%s</b>", text) end
function markup.italic(text) return format("<i>%s</i>", text) end
function markup.strike(text) return format("<s>%s</s>", text) end
function markup.underline(text) return format("<u>%s</u>", text) end
function markup.monospace(text) return format("<tt>%s</tt>", text) end
function markup.big(text) return format("<big>%s</big>", text) end
function markup.small(text) return format("<small>%s</small>", text) end
-- Set the font
function markup.font(font, text)
return format("<span font='%s'>%s</span>", font, text)
end
-- Set the foreground
function markup.fg.color(color, text)
return format("<span foreground='%s'>%s</span>", color, text)
end
-- Set the background
function markup.bg.color(color, text)
return format("<span background='%s'>%s</span>", color, text)
end
-- Set foreground and background
function markup.color(fg, bg, text)
return format("<span foreground='%s' background='%s'>%s</span>", fg, bg, text)
end
-- Set font and foreground
function markup.fontfg(font, fg, text)
return format("<span font='%s' foreground='%s'>%s</span>", font, fg, text)
end
-- Set font and background
function markup.fontbg(font, bg, text)
return format("<span font='%s' background='%s'>%s</span>", font, bg, text)
end
-- Set font, foreground and background
function markup.fontcolor(font, fg, bg, text)
return format("<span font='%s' foreground='%s' background='%s'>%s</span>", font, fg, bg, text)
end
-- link markup.{fg,bg}(...) calls to markup.{fg,bg}.color(...)
setmetatable(markup.fg, { __call = function(_, ...) return markup.fg.color(...) end })
setmetatable(markup.bg, { __call = function(_, ...) return markup.bg.color(...) end })
-- link markup(...) calls to markup.fg.color(...)
return setmetatable(markup, { __call = function(_, ...) return markup.fg.color(...) end })

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--[[
Licensed under GNU General Public License v2
* (c) 2017, Simon Désaulniers <sim.desaulniers@gmail.com>
* (c) 2017, Uli Schlachter
* (c) 2017, Jeferson Siqueira <jefersonlsiq@gmail.com>
--]]
-- Menu iterator with Naughty notifications
-- lain.util.menu_iterator
local naughty = require("naughty")
local helpers = require("lain.helpers")
local atable = require("awful.util").table
local assert = assert
local pairs = pairs
local tconcat = table.concat
local unpack = unpack or table.unpack -- lua 5.1 retro-compatibility
local state = { cid = nil }
local function naughty_destroy_callback(reason)
local closed = naughty.notificationClosedReason
if reason == closed.expired or reason == closed.dismissedByUser then
local actions = state.index and state.menu[state.index - 1][2]
if actions then
for _,action in pairs(actions) do
-- don't try to call nil callbacks
if action then action() end
end
state.index = nil
end
end
end
-- Iterates over a menu.
-- After the timeout, callbacks associated to the last visited choice are
-- executed. Inputs:
-- * menu: a list of {label, {callbacks}} pairs
-- * timeout: time to wait before confirming the menu selection
-- * icon: icon to display in the notification of the chosen label
local function iterate(menu, timeout, icon)
timeout = timeout or 4 -- default timeout for each menu entry
icon = icon or nil -- icon to display on the menu
-- Build the list of choices
if not state.index then
state.menu = menu
state.index = 1
end
-- Select one and display the appropriate notification
local label
local next = state.menu[state.index]
state.index = state.index + 1
if not next then
label = "Cancel"
state.index = nil
else
label, _ = unpack(next)
end
state.cid = naughty.notify({
text = label,
icon = icon,
timeout = timeout,
screen = mouse.screen,
replaces_id = state.cid,
destroy = naughty_destroy_callback
}).id
end
-- Generates a menu compatible with the first argument of `iterate` function and
-- suitable for the following cases:
-- * all possible choices individually (partition of singletons);
-- * all possible subsets of the set of choices (powerset).
--
-- Inputs:
-- * args: an array containing the following members:
-- * choices: Array of choices (string) on which the menu will be
-- generated.
-- * name: Displayed name of the menu (in the form "name: choices").
-- * selected_cb: Callback to execute for each selected choice. Takes
-- the choice as a string argument. Can be `nil` (no action
-- to execute).
-- * rejected_cb: Callback to execute for each rejected choice (possible
-- choices which are not selected). Takes the choice as a
-- string argument. Can be `nil` (no action to execute).
-- * extra_choices: An array of extra { choice_str, callback_fun } pairs to be
-- added to the menu. Each callback_fun can be `nil`.
-- * combination: The combination of choices to generate. Possible values:
-- "powerset" and "single" (default).
-- Output:
-- * m: menu to be iterated over.
local function menu(args)
local choices = assert(args.choices or args[1])
local name = assert(args.name or args[2])
local selected_cb = args.selected_cb
local rejected_cb = args.rejected_cb
local extra_choices = args.extra_choices or {}
local ch_combinations = args.combination == "powerset" and helpers.powerset(choices) or helpers.trivial_partition_set(choices)
for _, c in pairs(extra_choices) do
ch_combinations = atable.join(ch_combinations, {{c[1]}})
end
local m = {} -- the menu
for _,c in pairs(ch_combinations) do
if #c > 0 then
local cbs = {}
-- selected choices
for _,ch in pairs(c) do
if atable.hasitem(choices, ch) then
cbs[#cbs + 1] = selected_cb and function() selected_cb(ch) end or nil
end
end
-- rejected choices
for _,ch in pairs(choices) do
if not atable.hasitem(c, ch) and atable.hasitem(choices, ch) then
cbs[#cbs + 1] = rejected_cb and function() rejected_cb(ch) end or nil
end
end
-- add user extra choices (like the choice "None" for example)
for _,x in pairs(extra_choices) do
if x[1] == c[1] then
cbs[#cbs + 1] = x[2]
end
end
m[#m + 1] = { name .. ": " .. tconcat(c, " + "), cbs }
end
end
return m
end
return { iterate = iterate, menu = menu }

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--[[
Licensed under GNU General Public License v2
* (c) 2016, Luca CPZ
* (c) 2015, unknown
--]]
local awful = require("awful")
local capi = { client = client }
local math = math
local string = string
local pairs = pairs
local screen = screen
local setmetatable = setmetatable
-- Quake-like Dropdown application spawn
local quake = {}
-- If you have a rule like "awful.client.setslave" for your terminals,
-- ensure you use an exception for QuakeDD. Otherwise, you may
-- run into problems with focus.
function quake:display()
if self.followtag then self.screen = awful.screen.focused() end
-- First, we locate the client
local client = nil
local i = 0
for c in awful.client.iterate(function (c)
-- c.name may be changed!
return c.instance == self.name
end)
do
i = i + 1
if i == 1 then
client = c
else
-- Additional matching clients, let's remove the sticky bit
-- which may persist between awesome restarts. We don't close
-- them as they may be valuable. They will just turn into
-- normal clients.
c.sticky = false
c.ontop = false
c.above = false
end
end
if not client and not self.visible then return end
if not client then
-- The client does not exist, we spawn it
local cmd = string.format("%s %s %s", self.app,
string.format(self.argname, self.name), self.extra)
awful.spawn(cmd, { tag = self.screen.selected_tag })
return
end
-- Set geometry
client.floating = true
client.border_width = self.border
client.size_hints_honor = false
local maximized = client.maximized
local fullscreen = client.fullscreen
client:geometry(self.geometry[self.screen.index] or self:compute_size())
-- Set not sticky and on top
client.sticky = false
client.ontop = true
client.above = true
client.skip_taskbar = true
-- Additional user settings
if self.settings then self.settings(client) end
-- Toggle display
if self.visible then
client.hidden = false
client.maximized = self.maximized
client.fullscreen = self.fullscreen
client:raise()
self.last_tag = self.screen.selected_tag
client:tags({self.screen.selected_tag})
capi.client.focus = client
else
self.maximized = maximized
self.fullscreen = fullscreen
client.maximized = false
client.fullscreen = false
client.hidden = true
local ctags = client:tags()
for j, _ in pairs(ctags) do
ctags[j] = nil
end
client:tags(ctags)
end
return client
end
function quake:compute_size()
-- skip if we already have a geometry for this screen
if not self.geometry[self.screen.index] then
local geom
if not self.overlap then
geom = screen[self.screen.index].workarea
else
geom = screen[self.screen.index].geometry
end
local width, height = self.width, self.height
if width <= 1 then width = math.floor(geom.width * width) - 2 * self.border end
if height <= 1 then height = math.floor(geom.height * height) end
local x, y
if self.horiz == "left" then x = geom.x
elseif self.horiz == "right" then x = geom.width + geom.x - width
else x = geom.x + (geom.width - width)/2 end
if self.vert == "top" then y = geom.y
elseif self.vert == "bottom" then y = geom.height + geom.y - height
else y = geom.y + (geom.height - height)/2 end
self.geometry[self.screen.index] = { x = x, y = y, width = width, height = height }
end
return self.geometry[self.screen.index]
end
function quake:toggle()
if self.followtag then self.screen = awful.screen.focused() end
local current_tag = self.screen.selected_tag
if current_tag and self.last_tag ~= current_tag and self.visible then
local c=self:display()
if c then
c:move_to_tag(current_tag)
end
else
self.visible = not self.visible
self:display()
end
end
function quake.new(conf)
conf = conf or {}
conf.app = conf.app or "xterm" -- application to spawn
conf.name = conf.name or "QuakeDD" -- window name
conf.argname = conf.argname or "-name %s" -- how to specify window name
conf.extra = conf.extra or "" -- extra arguments
conf.border = conf.border or 1 -- client border width
conf.visible = conf.visible or false -- initially not visible
conf.followtag = conf.followtag or false -- spawn on currently focused screen
conf.overlap = conf.overlap or false -- overlap wibox
conf.screen = conf.screen or awful.screen.focused()
conf.settings = conf.settings
-- If width or height <= 1 this is a proportion of the workspace
conf.height = conf.height or 0.25 -- height
conf.width = conf.width or 1 -- width
conf.vert = conf.vert or "top" -- top, bottom or center
conf.horiz = conf.horiz or "left" -- left, right or center
conf.geometry = {} -- internal use
conf.maximized = false
conf.fullscreen = false
local dropdown = setmetatable(conf, { __index = quake })
capi.client.connect_signal("manage", function(c)
if c.instance == dropdown.name and c.screen == dropdown.screen then
dropdown:display()
end
end)
capi.client.connect_signal("unmanage", function(c)
if c.instance == dropdown.name and c.screen == dropdown.screen then
dropdown.visible = false
end
end)
return dropdown
end
return setmetatable(quake, { __call = function(_, ...) return quake.new(...) end })

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--[[
Licensed under GNU General Public License v2
* (c) 2015, Luca CPZ
* (c) 2015, plotnikovanton
--]]
local wibox = require("wibox")
local gears = require("gears")
local beautiful = require("beautiful")
-- Lain Cairo separators util submodule
-- lain.util.separators
local separators = { height = beautiful.separators_height or 0, width = beautiful.separators_width or 9 }
-- [[ Arrow
-- Right
function separators.arrow_right(col1, col2)
local widget = wibox.widget.base.make_widget()
widget.col1 = col1
widget.col2 = col2
widget.fit = function(_, _, _)
return separators.width, separators.height
end
widget.update = function(_, _)
widget.col1 = col1
widget.col2 = col2
widget:emit_signal("widget::redraw_needed")
end
widget.draw = function(_, _, cr, width, height)
if widget.col2 ~= "alpha" then
cr:set_source_rgba(gears.color.parse_color(widget.col2))
cr:new_path()
cr:move_to(0, 0)
cr:line_to(width, height/2)
cr:line_to(width, 0)
cr:close_path()
cr:fill()
cr:new_path()
cr:move_to(0, height)
cr:line_to(width, height/2)
cr:line_to(width, height)
cr:close_path()
cr:fill()
end
if widget.col1 ~= "alpha" then
cr:set_source_rgba(gears.color.parse_color(widget.col1))
cr:new_path()
cr:move_to(0, 0)
cr:line_to(width, height/2)
cr:line_to(0, height)
cr:close_path()
cr:fill()
end
end
return widget
end
-- Left
function separators.arrow_left(col1, col2)
local widget = wibox.widget.base.make_widget()
widget.col1 = col1
widget.col2 = col2
widget.fit = function(_, _, _)
return separators.width, separators.height
end
widget.update = function(c1, c2)
widget.col1 = c1
widget.col2 = c2
widget:emit_signal("widget::redraw_needed")
end
widget.draw = function(_, _, cr, width, height)
if widget.col1 ~= "alpha" then
cr:set_source_rgba(gears.color.parse_color(widget.col1))
cr:new_path()
cr:move_to(width, 0)
cr:line_to(0, height/2)
cr:line_to(0, 0)
cr:close_path()
cr:fill()
cr:new_path()
cr:move_to(width, height)
cr:line_to(0, height/2)
cr:line_to(0, height)
cr:close_path()
cr:fill()
end
if widget.col2 ~= "alpha" then
cr:new_path()
cr:move_to(width, 0)
cr:line_to(0, height/2)
cr:line_to(width, height)
cr:close_path()
cr:set_source_rgba(gears.color.parse_color(widget.col2))
cr:fill()
end
end
return widget
end
-- ]]
return separators