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CSS manipulation for nodejs
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Readme.md

css-transform

CSS manipulations built on node-css.

Example

style.css:

@keyframes round {
  from { border-radius: 5px }
  to { border-radius: 10px }
}

.title {
  font-size: 18px;
  padding: 5px;
}

.close {
  position: absolute;
  top: 5px;
  right: 5px;
}

example.js:

var transform = require('css-transform')
  , fs = require('fs')
  , read = fs.readFileSync;

var vendors = ['-webkit-', '-moz-'];

var css = transform(read('examples/sink.css', 'utf8'))
  .prefix('border-radius', vendors)
  .prefix('@keyframes', vendors)
  .prefix('#dialog')
  .toString();

console.log(css);

stdout:

@keyframes round { 
  from { border-radius: 5px; } 
  to { border-radius: 10px; } 
}
@-moz-keyframes round { 
  from { border-radius: 5px; -moz-border-radius: 5px; } 
  to { border-radius: 10px; -moz-border-radius: 10px; } 
}
@-webkit-keyframes round { 
  from { border-radius: 5px; -webkit-border-radius: 5px; } 
  to { border-radius: 10px; -webkit-border-radius: 10px; } 
}
#dialog .title {font-size: 18px; padding: 5px;}
#dialog .close {position: absolute; top: 5px; right: 5px;}

API

.use(fn)

Use the given plugin fn.

A "plugin" is simply a function when is passed the Stylesheet instance, and make invoke one or more of the other API methods. The following example uses a closure to pass the vendors option, returning the plugin fn which maps transition vendor prefixes.

function transitions(vendors) {
  return function(style){
    style.map(function(prop, val) {
      var self = this;
      if ('transition' != prop) return val;
      vendors.forEach(function(vendor){
        var p = vendor + prop;
        var v = val.replace('transform', vendor + 'transform');
        self.addProperty(p, v);
      });
      this.addProperty(prop, val);
      return;
    });
  }
}

.prefix(string)

Prefix selectors with string.

.prefix('#dialog')

.prefix(property, prefixes)

Apply vendor prefixes array to occurrences of property.

.prefix('border-radius', ['-webkit-', '-moz-'])

.prefixes("@keyframes", prefixes)

Apply vendor prefixes array to @keyframes.

.prefix('@keyframes', ['-webkit-', '-moz-'])

.mapSelectors(callback)

Map selector strings using the given callback.

.mapSelectors(function(sel){
  return '#dialog ' + sel;
})

.map(callback)

Map property values with callback.

.map(function(prop, val){
  if (0 == val.indexOf('linear-gradient')) return '-webkit-' + val;
  return val;
})

License

(The MIT License)

Copyright (c) 2012 Learnboost <tj@vision-media.ca>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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