Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi All,
I generate a *jpeg* graphic and save it in a file in the /tmp directory of one of the servers I've been using. I then open() the file, do a bin mode, and read each line of the file. When I display the returned image in ifranview, (a very good image viewer), the image displays properly. *However*, when I save the file and attempt to display it in internet explorer 5.0+, the microsoft icon spins but never displays the content. Any idea on what is happening?

Thanks

PS. Note: This may be a repost... I thought I posted a question about it, but it appears I might not have submitted it since it's not appearing on new nodes...

Replies are listed 'Best First'.
Re: gd and internet explorer
by Cabrion (Friar) on Feb 11, 2003 at 17:15 UTC
    You probably don't need binmode unless your script is running in Windows. I doubt it is because you referenced /tmp. If that is the case, comment out the binmode lines below. When working with binary files, use read() to have better control over memory usage. 

    open (IN, "<$path/$filename.tmp") || die $!;
binmode IN;
open (OUT, ">$path/$filename.jpg") || die $!;
binmode OUT;
print OUT $buf while read IN, $buf, 8192;
close IN;
close OUT;

    [download]
    P.S.
    If you are transfering that file via FTP from the server to the windows box to test opening it . . you did remeber to set FTP to binary more by issuing "bin" before the get right?
[reply]
[d/l]

      If the file is binary you should binmode() no matter where you run. Think about porting the script!

      Plus with the advent of LAYERs in Perl 5.8 binmode() stops being a NOOP under Unix and you may actually HAVE to use binmode() even if you are running a unix.

      Jenda

[reply]
      This is a web page app, not a ftp app... I think I have one more thing up my sleve... (perhaps an img tag will get it to work, because I *was* able to get that to work the last time I generated an image... ) thanks for the tid bits anyways... very strange behavior
[reply]
Re: gd and internet explorer
by zakzebrowski (Curate) on Feb 13, 2003 at 12:09 UTC
    strange. you can trick gd into working right by instead of directly returning the image to the client, generate a web page that uses an IMG link to that newly generated image, and that will work.

    ----
    Zak
    Pluralitas non est ponenda sine neccesitate - mysql's philosphy
[reply]

Back to Seekers of Perl Wisdom