Recommended methods of extracting different segments of urls in elisp
reddit / emacs

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ykhurshid · 2022-02-09 12:14

I am wondering if there is a decent way to take a url in Elisp and
return different segments of it.

My specific use case is that I want to take a invidious video url and
return the video id without relying on a regexp monstrosity but such
an ability has a lot of applications.

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jamesconroyfinn · 2022-02-09 13:36

See https://www.gnu.org/software/emacs/manual/html_mono/url.html

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deaddyfreddy · 2022-02-09 13:42

url-generic-parse-url + url-parse-query-string

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ykhurshid · 2022-02-09 15:23

Thanks for the help, guys. As always, my inability to properly consult
the already included docs outstands me. :p

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EndlessApoptosis · 2022-02-10 06:41

Look for ytel on github, it's probably already doing what you are. If
it's not then ```url-retrieve-asynchronously``` and then ```libxml-
parse-html-...```.

After that the DOM of the page is either a returned list or cons cell.
To search into it use the ```dom-``` that filter by id, tag, attr, or
class. To iterate for multiple results you can use ```mapcar```.

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ftrx · 2022-02-10 20:31

You are not alone... IMVHO Emacs do have the best help-system built-
in, and one of the least useful help contents inside it... It's very
well done both in tool and informative content if you just look for a
function/variable/* but to really face broad topic is very messy, with
limited content...

Mastering Emacs is a very good (e)book but in a more broad sense even
in books terms up to date docs are lacking...