Getting first level using TFHpple - html

Question

I have some trouble using TFHpple, so here it is :
I would like to parse the following lines :
<div class=\"head\" style=\"height: 69.89px; line-height: 69.89px;\">
<div class=\"cell editable\" style=\"width: 135px;\"contenteditable=\"true\">
<p> 1</p>
</div>
<div class=\"cell\" style=\"width: 135px;\" contenteditable=\"false\">
<p>2</p>
</div>
</div>
<div style=\"height: 69.89px; line-height: 69.89px;\" class=\"head\">
<div class=\"cell\" style=\"width: 135px; text-align: left;\"contenteditable=\"false\">
<p>3 </p>
</div>
<div class=\"cell\" style=\"width: 135px;\" contenteditable=\"false\">
<p>4</p>
</div>
</div>
<div style=\"height: 69.89px; line-height: 69.89px;\" class=\"\">
<div class=\"cell\" style=\"width: 135px;\" contenteditable=\"false\">
<p>5</p>
</div>
<div class=\"cell\" style=\"width: 135px;\" contenteditable=\"false\">
<p>6</p>
</div>
</div>
For now I would like to put the first level of div "element" (sorry I don't know the proper terminology) in an array.
So I have tried to do it by simply giving /div as the xPath to the searchWithXPathQuery methods but it simply doesn't find anything.
My second solution was to try using a path of this kind : //div[#class=\"head\"] but also allowing [#class=\"\"] but I don't even know if it is possible.
(I would like to do so because I need the elements to be in the same order in the array as they are in the data)
So here is my question, is there a particular reason why TFHpple wouldn't work with /div?
And if there is noway to just take the first level of div, then is it possible to make a predicate on the value of an attribute with xPath (here the attribute class) ? (And how ? I have looked quite a lot now and couldn't find anything)
Thanks for your help.
PS : If it helps, here is the code I use to try and parse the data, it is first contained in the string self.material.Text :
NSData * data = [self.material.Text dataUsingEncoding:NSUnicodeStringEncoding];
TFHpple * tableParser = [TFHpple hppleWithHTMLData:data];
NSString * firstXPath = #"/div";
NSArray<TFHppleElement *> * tableHeader = [tableParser searchWithXPathQuery:firstXPath];
NSLog(#"We found : %d", tableHeader.count);

Answer 1

You wrote:
Getting first level using TFHpple
I assume you mean: without also getting all descendants?
Taking your other requirements into account, you can do so as follows:
//div[not(ancestor::div)][#class='head' or #class='']
Dissecting this:
Select all div elements (yes, correct term ;) at any level in the whole document: //div
Filter with a predicate (the thing between brackets) for elements not containing a div themselves, by checking if there's some div ancestor (parent of a parent of a parent of a....) [not(ancestor::div)]
Filter by your other requirements: [#class='head' or #class='']
Note 1: your given XML is not valid, it contains multiple root elements. XML can have at most one root element.
Note 2: if your requirements are to first get all divs by #class or empty #class, and then only those that are "first level", reverse the predicates:
//div[#class='head' or #class=''][not(ancestor::div)]

Answer 2

You can use the following XPath expression to get div element -that's quite a correct term-, having class attribute value equals "head" or empty :
//div[#ciass='head' or #class='']