[erlang-questions] How to extract string between XML tags

[PAILLEAU Eric]

Hello Hugo,

it works with anything, as this solution is not to catch data in tags, 
but to remove tags. Even with unbalanced crapy html.

1> re:replace("<b>Part of a <b>nested 
tag</b>...</b>","<\/?[^>]{1,}>","", [global, {return, list}]).
"Part of a nested tag..."



Le 29/09/2018 à 17:16, Hugo Mills a écrit :
>     Note that this only works if there's no nested tags of the same
> type. For example, it'll get this wrong:
> 
> <b>Part of a <b>nested tag</b>...</b>
> 
>     (And there's *no* regex that can get this right in general)
> 
>     Hugo.
> 
> On Sat, Sep 29, 2018 at 11:11:19AM -0400, Lloyd R. Prentice wrote:
>> Thanks, Eric!
>>
>> Best wishes,
>>
>> Lloyd
>>
>> Sent from my iPad
>>
>>> On Sep 29, 2018, at 5:13 AM, PAILLEAU Eric <eric.pailleau@REDACTED> wrote:
>>>
>>> hello,
>>> sorry did not see this question before.
>>>
>>> A simple regexp is possible "<\/?[^>]{1,}>"
>>>
>>> re:replace("<th>title <b>bold</b></th>","<\/?[^>]{1,}>","", [global, {return, list}]).
>>> "title bold"
>>>
>>>
>>>
>>>> Le 25/09/2018 à 23:56, lloyd@REDACTED a écrit :
>>>> Hello,
>>>> By now I should know how to do this. But I've fumbled for more time than I have to find an elegant solution.
>>>> Can anyone show a better way?
>>>> Example string: "<th>Firstname</th>"  % NOTE: could be any valid tag
>>>> My kludge:
>>>> extract_text(TaggedText) ->
>>>>    Split = re:split(TaggedText, "<"),
>>>>    Split2 = lists:nth(2, Split),
>>>>    Split3 = binary_to_list(Split2),
>>>>    Split4 = re:split(Split3, ">"),
>>>>    Split5 = lists:nth(2, Split4),
>>>>    binary_to_list(Split5).
>>>> Surely there's a better way.
>>>> Many thanks,
>>>> LRP
>>>> *********************************************
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-- 
----------------------------------------
    Eric PAILLEAU  |  eric@REDACTED
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