Asset Catalog HEX colours export

exportColours.rb

# Path: .../Colors.xcassets
# Usage: ruby exportColours.rb

require 'json'

def parseHex(inp)
	return inp[2..-1] if inp.index('0x') == 0
	ret = ((inp.to_f) * 255).to_i.to_s(16)
	ret = '0'+ ret if ret.length == 1
	return ret
end

colors = { }
fs = `ls | grep colorset`.split "\n"
fs.each{|f|
	c = f[0..f.index('.')-1]
	j = `cat #{f}/Contents.json`
	j = JSON.parse j
	j['colors'].each{|cd|
		next if cd['appearances'] && cd['appearances'][0]['value'] == 'dark'
		colors[c] = cd['color']['components']
	}
}

colors.each{|k,v|
	a = v['alpha'].to_f
	r = g = b = nil
	if v['white'] then
		r = g = b = parseHex v['white']
	elsif v['red'] then
		r = parseHex v['red']
		g = parseHex v['green']
		b = parseHex v['blue']
	end
	puts "@\"#{k}\": UIColorFromRGBA(0x#{r}#{g}#{b}, #{a}),"
}