Re: Any package for boolean search?

[Jean Louis <bugs@gnu.support>]

* Joel Reicher <joel.reicher@gmail.com> [2024-12-26 09:03]:
> Jean Louis <bugs@gnu.support> writes:
> 
> > Boolean Search: This is a method where search terms are combined using
> > boolean logic, as described by the operators AND, OR, and NOT.
> > 
> > I would like to implement this classic into the website search. And I
> > wish to keep it simple.
> 
> Is there an Emacs or elisp aspect to this question I might be
> missing?

I don't know what you mean. I am looking for some ready package that
provides maybe string searching within other strings, by using boolean
operators.

I am starting the logic here below:

(defun wrs-search-query-process (query)
  (let ((query (wrs-search-clean-query query)))
    (cond
     ;; dispatch if there is no boolean
     ((not (string-match-p (rx word-start (or "OR" "NOT" "AND" word-end)) query))
      (wrs-search-query query))
     
     ;; dispatch when there is AND but not OR or NOT
     ((and (string-match-p (rx word-start "AND" word-end) query)
	   (not (string-match-p (rx word-start (or "OR" "NOT" word-end)) query)))
      (wrs-search-query-and query)))))

So there will be different ways how to process those parts of the
query separated by AND, OR, NOT and in various combinations.

> Are you after a package to submit a search to a particular search
> engine? Is that what you mean?

No. 

It is website search, when user enters some terms to get list of
website pages. I don't have many, but 1300+ in single website has some
key information for people.

-- 
Jean Louis