TonyM
It makes great sense to throw away unneeded text BETWEEN tags.
Unfortunately I could not get your version to work.
As far as I can see it just re-adds tags you just took off, and also adds
them to text you need to excise.
Yes?
TT
On Sunday, 25 August 2019 05:50:46 UTC+2, TonyM wrote:
>
> Mark,
>
> Thanks for this, I only just got to test this; A Test tiddler as follows
> is not working as I may expect it
> zfdtshwfthf
> <li>Content</li>
> sfghn
> <li>Content2</li>
>
> sfghsfgh
> <li>Content3</li>
> sxgfhfgsdh
>
> I would have hoped it would return
> Content
> Content2
> Content3
>
>
> If it was to return only the content between the `<li> and </li>` and not
> any other content from the test tiddler I could do this;
> \define output()
> <$vars realchars="[^\s]+">
> <$list
> filter="[{test data}splitregexp[\n]join[
> ]splitregexp[<li.*?>]butfirst[1]splitregexp[</li>]butlast[1]regexp<realchars>addprefix[<li>]addsuffix[</li>]]"
> >
>
> </$list>
> </$vars>
> \end
> <$wikify name=result text="<<output>>">
> <<result>>
> </$wikify>
> Which would find all list items in test (HTML copied from somewhere) and
> create a new list of only list (li) items in the HTML
>
> Does that make sense?
>
> Regards
> Tony
>
> On Friday, August 23, 2019 at 2:08:20 AM UTC+10, Mark S. wrote:
>>
>> Re your 2nd question, you can make the filter slightly more robust:
>>
>> [{test}splitregexp[\n]join[ ]splitregexp[<li.*?>]butfirst[1]splitregexp
>> [</li>]butlast[1]regexp<realchars>]
>>
>> Re your 1st question, I don't believe you can do this in a single filter.
>> It will probably take multiple lines if possible at all. Because, there are
>> no core tools
>> for grabbing the actual text you want -- only for splitting. People have
>> done a lot with splitting, but it gets tedious.
>>
>> If you had a regular expression filter that could split and return groups
>> (e.g. #2963) then you could simply search for and lift out the <li ...>
>> group and the content group in one regular expression.
>>
>> On Thursday, August 22, 2019 at 7:58:06 AM UTC-7, TonyM wrote:
>>>
>>> Mark - Wow,
>>>
>>> I will test it out tomorrow to see how far I can take it.
>>>
>>> I hope it works for multi-line tags
>>>
>>> My interest would be also the option to return
>>> <li>line 3</li>
>>> <li>line 2</li>
>>> <li>line 1</li>
>>> or
>>> line 3
>>> line 2 <https://tiddlywiki.com/#line%202>
>>> line 1 <https://tiddlywiki.com/#line%201>
>>> Because keeping the valid tags can be made use of as well.
>>>
>>> Ahd also see how to handle If the list tag had a style eg <li
>>> style="something"> it would be nice if we could return
>>> <li style="something">line 1</li>
>>> or
>>> line 1
>>>
>>> If so a lot can be done to extract useful content from html, even if
>>> just to summarise some content.
>>>
>>> Perhaps further resolution would help like <section
>>> name=extract>content</section>
>>>
>>> Or extract list items.
>>>
>>> Even without using html a tiddlers text field could use html block and
>>> inline elements https://www.w3schools.com/html/html_blocks.asp to
>>> structure the content, and with such a regex macro extract parts of the
>>> tiddler text such as say a prepared extract from the content, or an
>>> excerpt, or a config settings or more.
>>>
>>> Regards
>>> Tony
>>>
>>>
>>> On Friday, August 23, 2019 at 12:22:47 AM UTC+10, Mark S. wrote:
>>>>
>>>>
>>>> There's that saying, "When all you have is a hammer, everything starts
>>>> to look like a nail."
>>>>
>>>> All we have is regex. It would be great to have some other tool for
>>>> extracting actual DOM-like structures the way you
>>>> could with TW classic. But we don't have it.
>>>>
>>>> Actually, the tool we have for regexp is also a bit lacking. There's no
>>>> tool for directly lifting desired target text. The new splitregexp only
>>>> splits, it doesn't
>>>> return the text we want to find. Here's my version that does most
>>>> literally what you ask for
>>>>
>>>> <$vars realchars="[^\s]+">
>>>> <$list filter="[{test}splitregexp[\n]join[ ]splitregexp[<li>
>>>> ]butfirst[1]splitregexp[</li>]butlast[1]regexp<realchars>]">
>>>>
>>>> </$list>
>>>> </$vars>
>>>>
>>>> Input:
>>>>
>>>> More text here
>>>> <li>line 3</li>
>>>> <li>line 2</li>
>>>> <li>line 1</li>
>>>> More text there
>>>>
>>>> Output
>>>>
>>>>
>>>> line 3 <https://tiddlywiki.com/#line%203>
>>>> line 2 <https://tiddlywiki.com/#line%202>
>>>> line 1 <https://tiddlywiki.com/#line%201>
>>>>
>>>>
>>>>
>>>> Good luck!
>>>>
>>>> On Thursday, August 22, 2019 at 2:21:34 AM UTC-7, TonyM wrote:
>>>>>
>>>>> Jeremy,
>>>>>
>>>>> You are aware I do not want so much to parse it as locate the content
>>>>> between matching tags.
>>>>>
>>>>> Its intention is to access content delimited by html tags inside the
>>>>> text content.
>>>>>
>>>>> Perhaps we could use it to retrieve items between the section div tags
>>>>> or all instances of text between the li tags.
>>>>>
>>>>> Regards
>>>>> Tony
>>>>>
>>>>>
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