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#!/usr/bin/env ruby
begin
require 'scrapi'
rescue LoadError
require 'rubygems'
require 'scrapi'
end
def collect_popular_colors(src=nil)
src ||= URI("http://en.wikipedia.org/wiki/List_of_colors")
row = Scraper.define do
process "th > a:first-child", :name => :text
process "td:nth-child(3)", :hex_triplet => :text
process "td:nth-child(4)", :red => :text
process "td:nth-child(5)", :green => :text
process "td:nth-child(6)", :blue => :text
result :name, :hex_triplet, :red, :green, :blue
end
scraper = Scraper.define do
process "table > tr", "rows[]" => row
result :rows
end
scraper.scrape(src)
end
def collect_x11_colors(src=nil)
src ||= URI("http://en.wikipedia.org/wiki/X11_color_names")
row = Scraper.define do
process "th", :name => :text
process "td:nth-child(2)", :hex_triplet => "@bgcolor"
process "td:nth-child(6)", :red => :text
process "td:nth-child(7)", :green => :text
process "td:nth-child(8)", :blue => :text
result :name, :hex_triplet, :red, :green, :blue
end
scraper = Scraper.define do
process "table > tr", "rows[]" => row
result :rows
end
x11_colors = scraper.scrape(src)
x11_colors.collect do |color|
if color.name
color.name = color.name.gsub(/([a-z]|[A-Z]+)([A-Z])/, "\\1 \\2")
end
color
end
end
def constanize_color_name(name)
names = name.gsub(/é/, "e").upcase.split(/(?:\s*\(|\)\s*)/)
names = names.collect {|name| name.gsub(/[ \-]/, "_")}
if names[1] and ["WEB", "COLOR_WHEEL", "X11"].include?(names[1])
real_names = [names.join("_")]
if names == ["ORANGE", "COLOR_WHEEL"]
real_names << names.first
end
names = real_names
end
names
end
colors = collect_popular_colors
x11_colors = collect_x11_colors
top_dir = File.expand_path(File.join(File.dirname(__FILE__), ".."))
colors_rb = File.join(top_dir, "src", "lib", "cairo", "colors.rb")
File.open(colors_rb, "w") do |rb|
rb.puts <<-HEADER
require 'cairo/color'
module Cairo
module Color
HEADER
[
[colors, nil],
[x11_colors, "X11"]
].each do |colors, mod|
indent = " " * 2
if mod
rb.puts("#{indent}module #{mod}")
indent << " "
end
colors.each do |color|
if color.name and color.hex_triplet and
color.red and color.green and color.blue
begin
names = constanize_color_name(color.name)
hexes = color.hex_triplet.scan(/[\da-f]{2,2}/i)
red_hex, green_hex, blue_hex = hexes.collect {|hex| hex.hex}
red = Integer(color.red)
green = Integer(color.green)
blue = Integer(color.blue)
if [red_hex, green_hex, blue_hex] != [red, green, blue]
warning_message = "Hex triplet(#{color.hex_triplet}) of "
warning_message << "#{color.name} is difference from RGB"
warning_message << "(#{red}, #{green}, #{blue}). "
if ["Alice Blue", "Old Rose"].include?(color.name)
warning_message << "Use hex triplet value."
red, green, blue = red_hex, green_hex, blue_hex
else
warning_message << "Use RGB value."
end
puts warning_message
end
r, g, b = [red, green, blue].collect {|v| v / 255.0}
rb.puts("#{indent}# #{color.name}: #{color.hex_triplet}")
name, *alias_names = names
rb.puts("#{indent}#{name} = RGB.new(#{r}, #{g}, #{b})")
alias_names.each do |alias_name|
rb.puts("#{indent}#{alias_name} = #{name}")
end
rescue ArgumentError
next
end
end
end
if mod
indent = indent[0..-3]
rb.puts("#{indent}end")
rb.puts("#{indent}include #{mod}")
rb.puts
end
end
rb.puts <<-FOOTER
end
end
FOOTER
end
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