module AdapterHelper::RgbToHex
Public Instance Methods
ensure_hex(color)
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# File lib/premailer/adapter/rgb_to_hex.rb, line 24 def ensure_hex(color) match_data = is_rgb?(color) if match_data "#{to_hex(match_data[1])}#{to_hex(match_data[2])}#{to_hex(match_data[3])}" else color end end
is_rgb?(color)
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# File lib/premailer/adapter/rgb_to_hex.rb, line 9 def is_rgb?(color) pattern = %r{ rgb \(\s* # literal open, with optional whitespace (\d{1,3}) # capture 1-3 digits \s*,\s* # comma, with optional whitespace (\d{1,3}) # capture 1-3 digits \s*,\s* # comma, with optional whitespace (\d{1,3}) # capture 1-3 digits \s*\) # literal close, with optional whitespace }x pattern.match(color) end
to_hex(str)
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# File lib/premailer/adapter/rgb_to_hex.rb, line 5 def to_hex(str) str.to_i.to_s(16).rjust(2, '0').upcase end