Re: Numerically sorted arguments (in shell)

On 16.06.2024 06:56, Lawrence D'Oliveiro wrote:

On Sun, 16 Jun 2024 05:11:29 +0200, Janis Papanagnou wrote:
 

I don't know of this feature in Perl or Python; please provide some hint
if there is a feature like the one I need. Some code samples for
demonstration of your point are also welcome.

 
Python solution:
 
    import re
 
    items = \
        [
            "P1.HTM", "P10.HTM", "P11.HTM", "P2.HTM", "P3.HTM",
            "P4.HTM", "P5.HTM", "P6.HTM", "P7.HTM", "P8.HTM", "P9.HTM",
        ]
 
    print(items)
 
    print \
      (
        sorted
          (
            items,
            key = lambda f :
                tuple
                  (
                    (lambda : p, lambda : int(p))[i % 2 != 0]()
                        for i, p in enumerate(re.split("([0-9]+)", f))
                  )
          )
      )
 
output:
 
    ['P1.HTM', 'P10.HTM', 'P11.HTM', 'P2.HTM', 'P3.HTM', 'P4.HTM', 'P5.HTM', 'P6.HTM', 'P7.HTM', 'P8.HTM', 'P9.HTM']
    ['P1.HTM', 'P2.HTM', 'P3.HTM', 'P4.HTM', 'P5.HTM', 'P6.HTM', 'P7.HTM', 'P8.HTM', 'P9.HTM', 'P10.HTM', 'P11.HTM']
 

Thanks. Though I'm not familiar with Python to understand that code;
it's too far from any language I've been using.

The (for me) interesting question, though, is; how does it solve the
task I had been addressing? - For convenience I reiterate one main
application...

I want from my shell command line interface call a viewer (or any
other application) with a list of files. If in shell I do, e.g.,

  viewer P*.HTM

the list gets sorted lexicographically. How would the main function
look like that I could embed in my call to make a numerically sorted
list. Say, something like, for example,

  viewer $( p_sort P*.HTM )

where p_sort would be the Python code. - Note: this is no appropriate
solution since it would anyway not work correctly for file names with
embedded blanks and newlines. I just want to get a closer understanding
how you think this would be usable in shell (or from shell). Thanks.

Janis