html-pipe

Pluggable HTML Pipeline

Installation

Install with component(1):

$ component install automattic/html-pipe

Example

<p>this is a <span style="font-size: 18pt">wonderful</span> example of our html <em>pipeline!</em></p>

var p = document.getElementsByTagName('p')[0];

var out = htmlpipe(p)
  .pipe(sanitize)
  .pipe(highlight)
  .run()

// unwrap spans with inline styles
function sanitize(el) {
  if ('SPAN' == el.nodeName && el.getAttribute('style')) {
    return false;
  }
}

// turn em's into mark's
function highlight(el) {
  if ('EM' == el.nodeName) {
    var mark = document.createElement('mark');
    mark.innerHTML = el.innerHTML;
    return mark;
  }
}

console.log(out.innerHTML);
// this is a wonderful example of our html <mark>pipeline!</mark>

API

HTMLPipe(el)

Initialize the pipeline with el.

htmlpipe#pipe(fn)

Add a transform to the pipeline. The pipeline changes it's action based on the return value of fn. Here's a list of possible values:

• undefined: skip the transform and move to the next one
• null: remove the node from the transform. skip remaining transforms for the node.
• false: unwrap the node, so it's contents are at the same level as the original node. skip remaining transforms on unwrapped node, moving on to the first child.
• node (self): returning the current node will skip over the rest of its children and skip the remaining transforms for the node.
• node: replace the current node with a new node. pass the new node through the rest of the transforms
• string or number: replace the current node with a textnode containing the string or number. pass the textnode through the rest of the transforms

Check out the tests to see each of these transforms in action.

htmlpipe#run()

Run the pipeline, returning the transformed el.

Testing

npm install component-test
make test

License

The MIT License (MIT)

Copyright (c) 2014

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.