--[[

     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,
})