Re: Any recommendations on using PHP to parse marked-up text?

From	Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups	comp.lang.php
Subject	Re: Any recommendations on using PHP to parse marked-up text?
Date	2016-02-20 22:35 +0000
Organization	A noiseless patient Spider
Message-ID	<87ziuv103n.fsf@bsb.me.uk> (permalink)
References	<na4eau$at9$1@dont-email.me> <na4oki$igp$1@jstuckle.eternal-september.org> <naacdf$s6p$1@dont-email.me> <8760xj2lhx.fsf@bsb.me.uk> <naahtk$i3u$1@dont-email.me>

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James Harris <james.harris.1@gmail.com> writes:

> On 20/02/2016 20:08, Ben Bacarisse wrote:
>> James Harris <james.harris.1@gmail.com> writes:
>> <snip>
>>> The markup can be chosen. As long as it is easy to parse and easy for
>>> a human to work with it would be suitable. Most such markup would be
>>> converted to HTML elements: <hN>, <p>, <a>, etc and corresponding
>>> closing tags. There could also be self-contained tags which get
>>> converted to <br>, <hr> etc.
>>>
>>> To illustrate, here is one possible scheme for opening and closing tags:
>>>
>>> @(tagname, parameter, parameter)text@(/tagname)
>>>
>>> Here is another option:
>>>
>>> @tagname:parameter, parameter;text@/tagname;
>>
>> That seems almost as hard to write as HTML or XML.
>
> Maybe it looks worse than it should! I was just trying to illustrate
> the elements I thought would be needed in markup tags and to convey
> the idea that any suitable markup would do.
>
> Here's another attempt to make it look a bit better. This may not be
> any more successful....
>
> (@tagname, parameter, parameter)text(@/tagname)
>
> Maybe that's slightly easier on the eye...?

It's not about the eye (for me) but that it's not very far from, say:

<tagname p="parameter,parameter">text</tagname>

and there are lots of existing tool to help write XML, validate and
process XML.  (I'm not sure what the parameters are, but it might even
be better to be able to name them: <tagname fill="left" pad="0">.

As I've said, I'm not much of a fan, but unless the syntax is very much
simpler there is some value in leveraging the XML ecosystem.  (Did I
really say that?)

>> If you are happy (or
>> you are forced) to write comparatively fussy markup, then a well-trodden
>> path would be to use XML and an XML processor to convert your custom
>> markup to HTML.
>
> I see what you mean but in this case the markup is partly for
> security. I need to ensure that the person who writes the markup does
> not have access to general HTML facilities. But at the same time I
> need to provide enough to allow for basic markup of text and probably
> a few other things.

I understand that.  I was never suggesting you HTML.  You would remove
as invalid and tags that don't match the ones you know how to convert.

> For example, I may have a /conditional/ link tag that, for local
> targets, will check that the target exists. If the target does not
> exist then the link will render as non-clickable text. If the target
> does exist then the text will be clickable.

Sure.  I'm talking syntax.  How you process the XML would be up to you.

Anyway, please don't think I'm pushing XML, I'm just saying that you
might be 9/10ths of the way there already and it is not without its
advantages.

<snip>
-- 
Ben.

Thread

Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-18 12:47 +0000
  Re: Any recommendations on using PHP to parse marked-up text? Arno Welzel <usenet@arnowelzel.de> - 2016-02-18 15:52 +0100
    Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-20 18:28 +0000
  Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-18 14:56 +0000
    Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-18 22:14 +0100
      Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-18 21:45 +0000
        Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-18 23:09 +0100
          Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-19 01:15 +0000
            Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-19 02:45 +0100
              Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-19 12:03 +0000
                Re: Any recommendations on using PHP to parse marked-up text? Tim Streater <timstreater@greenbee.net> - 2016-02-19 12:17 +0000
                Re: Any recommendations on using PHP to parse marked-up text? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-02-19 14:18 +0100
                Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-19 14:02 +0000
                Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-20 20:31 +0100
                Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-21 01:39 +0000
                Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-21 11:33 +0100
                Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-21 12:53 +0000
    Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-20 18:29 +0000
      Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-20 20:32 +0100
  Re: Any recommendations on using PHP to parse marked-up text? Jerry Stuckle <jstucklex@attglobal.net> - 2016-02-18 10:43 -0500
    Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-20 18:51 +0000
      Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-20 20:08 +0000
        Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-20 21:22 +0100
          Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-20 23:40 +0000
            Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-21 11:39 +0100
              Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-21 13:09 +0000
        Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-20 20:24 +0000
          Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-20 22:35 +0000
            Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 08:37 +0000
              Re: Any recommendations on using PHP to parse marked-up text? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-21 10:55 +0000
                Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 13:25 +0000
          Re: Any recommendations on using PHP to parse marked-up text? Jerry Stuckle <jstucklex@attglobal.net> - 2016-02-20 17:50 -0500
            Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 08:49 +0000
              Re: Any recommendations on using PHP to parse marked-up text? Jerry Stuckle <jstucklex@attglobal.net> - 2016-02-21 10:05 -0500
      Re: Any recommendations on using PHP to parse marked-up text? Jerry Stuckle <jstucklex@attglobal.net> - 2016-02-20 17:45 -0500
        Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 09:01 +0000
          Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-21 11:46 +0100
            Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 12:36 +0000
              Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-21 14:39 +0100
                Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 13:40 +0000
                Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-21 14:46 +0100
                Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 14:57 +0000
          Re: Any recommendations on using PHP to parse marked-up text? Jerry Stuckle <jstucklex@attglobal.net> - 2016-02-21 10:10 -0500
            Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 17:50 +0000
              Re: Any recommendations on using PHP to parse marked-up text? Jerry Stuckle <jstucklex@attglobal.net> - 2016-02-21 14:08 -0500
      Re: Any recommendations on using PHP to parse marked-up text? Arno Welzel <usenet@arnowelzel.de> - 2016-02-21 18:35 +0100
        Re: Any recommendations on using PHP to parse marked-up text? James Harris <james.harris.1@gmail.com> - 2016-02-21 17:55 +0000
          Re: Any recommendations on using PHP to parse marked-up text? Arno Welzel <usenet@arnowelzel.de> - 2016-02-22 16:38 +0100
  Re: Any recommendations on using PHP to parse marked-up text? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-02-18 22:06 +0100
  Re: Any recommendations on using PHP to parse marked-up text? Ian Collins <ian-news@hotmail.com> - 2016-02-27 15:58 +1300

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