additional parsing option, conditional parsing and callbacks for attribute checking

[Mipme]

Added support for "extract" tag parser option:

consider following case:

<div><p>some text</p></div>

parser rule

"div": "extract"

gives you

<p>some text</p>

Added support for conditions on parser options:

<div class="dontlike"><p>text A</p><div class="like">text B</div></div>

parser rule

"div": {
  "extract": {
    "if": {
      "class": "^dontlike$"
    }
  }
}

result:

<p>text A</p><div class="like">text B</div>

and finally callbacks for attribute checking:

"a": {
  "check_attributes": {
    "rel": { "func": "checkLinkRelation" }
  }
}

function checkLinkRelation(attr, node) {
  var l = node.getAttribute('href');
  var p = new RegExp('^((ht|f)tps?:\/\/)');
  if (l.match(p)) { return 'nofollow'; }
  return false;
}

So if link text gets pasted or link set, then no rel-attribute is set.
On the other hand inserting to Goggles results in: rel="nofollow"

Oh, yes - and for convenience reasons, i sorted the advanced tag roles...

[p3drosola]

I think it's important to be able to extend the rule parser, but I think a better approach would be something like this.

#166

where we could write real functions in the rule set. something like:

"div": {
  "content" : function (oldNode){
    return $(oldNode).text();
  }
}

to perform an extract for example.

[Mipme]

Hi Pedro,

that's of course also a way to achieve it - the only wish i'd have is to simply provide the name of the function, since i prefer having the functions reside in my main script file and not in the config settings.

Maybe i've got time this weekend to code it. Cheers!

[p3drosola]

You already can. Use something like:

"div": {
  "content" : App.helpers.extract
}

Just pass the actual function object

App.helpers.extract = function() { ... }

[Mipme]

oh, cool - thx for the hint! This way i can check the attributes then of course as well.

By the way is it possible to mark a tag+attribute as none-deletable?
Like for a columnisation?

[p3drosola]

I think if you pass

{
   "attribute" : true
}

it might work