local std = require("lib.std")
local symbol = require("lib.symbol")

local M = {}

function M.cc(tbl, sep)
	return table.concat(tbl, sep or "")
end

function M.year(y)
	return y or os.date("%Y")
end

function M.copyright(link, holder, year)
	return symbol.legal.copyright .. " " .. M.year(year) .. " " .. std.external(link, holder)
end

function M.license(name)
	return symbol.legal.registered .. " " .. name
end

function M.ls(dir)
	local p = io.popen('ls -A -1 -- ' .. string.format('%q', dir))
	if not p then
		return nil
	end
	local t = {}
	for line in p:lines() do
		t[#t + 1] = line
	end
	p:close()
	return t
end

return M