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Re: Re: Gez

by Anonymous Monk
on Mar 14, 2002 at 14:15 UTC ( #151675=note: print w/ replies, xml ) Need Help??


in reply to Re: Gez
in thread Have CGI call script, display status in browser

Sorry, I should have been more specific The perl script I am trying to start from a submit button, creates text files based on data read from a database, then saves these files to disk. Its output just prints 'RUNNING', and 'COMPLETE' to STDOUT, which in this case needs to be an HTML form so that I know the status of the perl script


Comment on Re: Re: Gez
Re: Re: Re: Gez
by Juerd (Abbot) on Mar 14, 2002 at 17:11 UTC

    which in this case needs to be an HTML form so that I know the status of the perl script

    First, output 512 bytes to make browsers render. Some browsers will never render until the page is loaded completely (like Konqueror), but this works with at least Mozilla and MSIE.
    Then, start outputting.

    It's a very good idea to set $| to 1, to avoid all buffering. You could use javascript to make it look good.

    #!/usr/bin/perl -w use strict; $|++; sub set_status { my ($status) = @_; print '<script> document.getElementById("status").innerHTML = "' . $status . '"; </script>"'; } print qq{Content-Type: text/html\n <html><body><div style="font-size:288pt;"> Current status: <div id=status>Initialising</div> <!-- }, "Z" x 512, q{ --> </div></body></html> }; sleep 2; set_status 'RUNNING'; sleep 5; set_status 'COMPLETE';

    U28geW91IGNhbiBhbGwgcm90MTMgY
    W5kIHBhY2soKS4gQnV0IGRvIHlvdS
    ByZWNvZ25pc2UgQmFzZTY0IHdoZW4
    geW91IHNlZSBpdD8gIC0tIEp1ZXJk
    

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