googlefonts.coffee

# extract the weight and style from a google font variant string
splitVariant = (variant) ->
  weight = 'normal'
  style = 'normal'
  unless variant == 'regular'
    if variant == 'italic'
      style = 'italic'
    else
      weight = variant[..2]
      italic = variant[3..]
      if italic == 'italic'
        style = 'italic'
  info =
    weight: weight
    style: style
  info

# turn weight and style into a google font compatible variant string
combineVariant = (weight, style) ->
  weight ?= 'normal'
  style ?= 'normal'
  if weight == 'normal' and style == 'normal'
    'regular'
  else
    if weight == 'normal'
      # normal + italic becomes 'italic' only
      # (normal/normal is already handled as regular above)
      weight = ''
    else if weight == 'bold'
      weight = '700'
    unless style == 'italic'
      # assume everything else is normal
      style = ''
    "#{weight}#{style}"