Trey's conky configuration.
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function trim(s)
return (s:gsub("^%s*(.-)%s*$", "%1"))
end
function split_fmt(f)
if not type(f) == "string" then
io.stderr:write("ERROR! Argument '" .. format .. "' is not a string.")
return nil
end
local ret = {}
local curr = ""
local in_spec = false
for char in string.gmatch(f, ".") do
if in_spec then
if string.match(char, '[cdEefgiouXx]') then
curr = curr .. char
table.insert(ret, curr)
in_spec = false
curr = ""
elseif string.match(char, '[qs]') then
if string.match(curr, '^%%%-?[0-9]*$') then
curr = curr .. char
table.insert(ret, curr)
in_spec = false
curr = ""
else
io.stderr:write("Invalid format: '" .. curr .. char .. "'\n")
return nil
end
elseif string.match(char, '[0-9%.%-]') then
curr = curr .. char
elseif string.match(char, '%%') then
if string.match(curr, '^%%') then
curr = curr .. char
table.insert(ret, curr)
in_spec = false
curr = ""
else
io.stderr:write("Invalid format: '" .. curr .. char .. "'\n")
return nil
end
else
io.stderr:write("Invalid format: '" .. curr .. char .. "'\n")
return nil
end
else
if char == '%' then
in_spec = true
if curr ~= "" then
table.insert(ret, curr)
end
curr = char
else
curr = curr .. char
end
end
end
if curr ~= "" then
table.insert(ret, curr)
end
return ret
end
function table_length(t)
local count = 0
for _ in pairs(t) do
count = count + 1
end
return count
end
function count_formats(formats)
if type(formats) ~= 'table' then
io.stderr:write("ERROR! formats is not a table.\n")
return nil
end
local count = 0
for i,v in ipairs(formats) do
if string.match(v, '^%%') and not string.match(v, '%%$') then
count = count + 1
end
end
return count
end
function is_fmt_spec(str)
return string.match(str, "^%%")
end
function conky_printf(format, ...)
formats = split_fmt(format)
values = {...}
if count_formats(formats) ~= table_length(values) then
io.stderr:write("ERROR! Number of format specifiers to printf doesn't match the number of values passed.\n")
return nil
end
local parsed_values = {}
for i,v in ipairs(values) do
parsed_values[i] = conky_parse(v)
end
for i,fs in ipairs(formats) do
if is_fmt_spec(fs) then -- we have a format specifier
if string.match(fs, '[cdEefgiouXx]$') then -- we have a numeric format specifier, convert value to number
parsed_values[i] = tonumber(trim((parsed_values[i])))
end
end
end
local formatted_output = ""
local idx = 1
for i,fs in ipairs(formats) do
if is_fmt_spec(fs) then
if not string.match(fs, '%%$') then
formatted_output = formatted_output .. string.format(fs, parsed_values[idx])
idx = idx + 1
else
formatted_output = formatted_output .. '%'
end
else
formatted_output = formatted_output .. fs
end
end
return formatted_output
end