CoffeeScript CSS

despite the name, CoffeeScript is not required; it just makes writing objects (as well as everything else) easier. You could create a JSON string in another language, parse it in node, and render it with ccss.

install: npm install ccss

main.coffee:

ccss = require 'ccss'

template = require './template.coffee'
css = ccss.compile template
require('fs').writeFileSync 'main.css', css

#or all at once: ccss.compileFile './template.coffee', 'main.css'

template.coffee:

borderRadius = (str) ->
  WebkitBorderRadius: str
  MozBorderRadius:    str
  borderRadius:       str

boxShadow = (str) ->
  WebkitBoxShadow: str
  MozBoxShadow:    str
  boxShadow:       str

module.exports =
  form:
    input:
      padding: '5px'
      border: '1px solid'
      mixins: borderRadius '5px'
  '#id .className': do ->
    opaque = 1
    translucent = opaque / 2
    img:
      mixins: [
        borderRadius '5px'
        boxShadow '5px'
      ]
      opacity: translucent
    'img:hover':
      opacity: opaque

main.css:

form input {
  padding: 5px;
  border: 1px solid;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
}
#id .className img {
  opacity: 0.5;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  -webkit-box-shadow: 5px;
  -moz-box-shadow: 5px;
  box-shadow: 5px;
}
#id .className img:hover {
  opacity: 1;
}

the core of the compiler is simply this:

iterate over the key / values of an object; if the value is another object, append the key to the current selector, and recurse; else generate css.

to reduce the amount of quoting, if a css property has a capital letter C, it will be transformed into -c; selectors are not touched.

Related

CoffeeKup - CoffeeScript to HTML

ckup - Coco to both HTML and CSS

CoffeeStylesheets - Another CoffeeScript to CSS approach