Hi - I am trying to generate fairly large zip archives "on the fly." I'd like for the user to be able to download a single zip file containing thousands of files. I have been able to do this successfully, using two methods. The problem with the first method is that the users get timeout errors in their browsers (my guess is that "addTreeMatching" takes too long - there are thousands of files). The problem with the second method is that when you go to unarchive the zip file, only the first file appears (I suspect that this is a problem with the central directory). Any help would be greatly appreciated! Ideally, I'd be able to use some form of the second method, as that gives me the flexibility of renaming the files prior to archiving them.

First Method 
        use Archive::Zip; 
        my $zip = Archive::Zip->new();   # new instance
        $zip->addTreeMatching( "/$NewHomePath/Results/$InvoiceNumber",
+ "$InvoiceNumber", '\.(ab1$|seq$)' );
        print "Content-Type:application/zip\n";  
        print "Content-Disposition:attachment;filename=$FileNameToWrit
+e\n\n";
        $zip->writeToFileHandle(*STDOUT);

[download]
Second Method 
        use Archive::Zip; 
        my $zip = Archive::Zip->new();   # new instance
        chdir("/$NewHomePath/Results");
        @files = (<$InvoiceNumber/*.ab1>);   # files to store
        @filesA = (<$InvoiceNumber/*.seq>);   # files to store
        push (@files,@filesA);
        #PRINT HEADER
        print "Content-Type:application/zip\n";  
        print "Content-Disposition:attachment;filename=$FileNameToWrit
+e\n\n";
        #NOW PRINT TO STDOUT
        foreach $file (@files) {
            if ($DLWOSC eq "checked"){
                $TranslatedName=(split('/',$file))[-1];
                $TranslatedName=~s/\;/\_/g;
                $zip->addFile($file,$TranslatedName);   # add files
                $zip->writeToFileHandle(*STDOUT);
            }else{
                $zip->addFile($file);
                $zip->writeToFileHandle(*STDOUT);
            }
        }

[download]

In reply to Creating Zip Archives on the fly by fulmar2

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