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Re: A better way? Extracting filename from url

by Parham (Friar)
on Jan 14, 2002 at 16:28 UTC ( #138556=note: print w/ replies, xml ) Need Help??


in reply to A better way? Extracting filename from url

i use these with local harddrive filenames, but they should work pretty much the same for url's

method 1:
$file = substr $url, rindex($url, '/') + 1; #path contains full url

method 2:
$url =~ s/^.*\///; #just use the url to get the filename with a regex

method 3:
($file) = $url =~ m!([^/]+)$!; #another regex way


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Re: Re: A better way? Extracting filename from url
by moodster (Hermit) on Jan 14, 2002 at 17:01 UTC
    It works, but I guess you've also got to consider the possibility that the URL will contain query parameters, like this: http://www.site.com/dir/file.html?param1=val1&param2=val2

    So a second substitution (I'm sure you can do it with a lookahead assertion or similar, but that seems a bit overkill) is probably in order:

    $file =~ s/\?.*//;

    Cheers,
    -- moodster

      Moodster has a good point. Thanks all for your comments. To be honest I had not even considered the possiblity of query paramters, which is very silly of me. But hey, it was late. Anway, I can now look at this again a bit later on.
      I am constantly amazed and impressed with the good nature and high value of comments that come out of this site.

      Regards,
      Gerard
      The caffeine addict (now sufficiently supplied).

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